JP7212873B2 - Lighting system and lighting method - Google Patents

Description

The present disclosure relates to lighting systems and lighting methods.

Conventionally, techniques for creating a space by emitting light into the space have been proposed. For example, in Patent Document 1, an indirect lighting device installed on a wall surface called a peripheral unit is used to emit light from a light source that is hidden and cannot be directly viewed by reflection on a reflective panel or ceiling. By projecting it indirectly into the space, the space is produced so as to emphasize the height of the ceiling and the breadth of the walls.

JP 2011-210594 A

In recent years, studies have also been conducted on the possible influence of the color of light emitted by a lighting device on the psychological state of space users. As a result of extensive studies by the inventors of the present invention, it was found that changing the lighting method according to the state of the user can effectively affect the state of mind of the user. The present disclosure is based on such findings, and aims to provide a lighting system and a lighting method that can effectively affect psychological states.

A first lighting system according to the present disclosure comprises:
a lighting device that has a light emitting surface and emits light into a space;
When the user of the space is in the first state, the area of the light emitting surface emitting light is in the light emitting surface when the user is in the second state different from the first state. and a control device for controlling the lighting device to be different from the illuminated area.

In a first lighting system according to the present disclosure,
The control device is
When the user is in either one of the first state and the second state, the region of the light-emitting surface that emits light is the light-emitting region of the user in the one state. It is outside the range where you can be aware of the color on the surface,
When the user is in the other of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is in the other state. so that a person can be aware of the color on the light emitting surface,
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range in which the user in the first state can perceive the color on the light-emitting surface. ,
When the user is in the second state, the light-emitting region of the light-emitting surface is outside the range in which the user in the second state can perceive the color on the light-emitting surface. so that
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, at least a part of the light-emitting area of the light-emitting surface may cause the user in the first state to be aware of the color on the light-emitting surface. within the possible range,
When the user is in the second state, at least a part of the light-emitting area of the light-emitting surface may cause the user in the second state to be aware of the color on the light-emitting surface. to the extent possible,
2. The lighting system of claim 1, controlling the lighting device.

In the first lighting system according to the present disclosure, the range in which the user in the first state can perceive the color on the light-emitting surface is the range in which the user in the second state can Different from the range that can be conscious of color,

In a first lighting system according to the present disclosure,
The range in which the user in the first state can perceive the color on the light emitting surface is larger than the range in which the user in the second state can perceive the color on the light emitting surface. narrow,
The control device is
When the user is in the first state, the area of the light-emitting surface that emits light is greater than the area of the light-emitting surface that emits light when the user is in the second state. so that it becomes wider
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the second state, the light-emitting region of the light-emitting surface is outside the range in which the user in the second state can perceive colors on the light-emitting surface. ,
When the user is in the first state, at least a part of the light-emitting area of the light-emitting surface may cause the user in the first state to be aware of the color on the light-emitting surface. to the extent possible,
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the second state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less,
When the user is in the first state, at least part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 10° or less and a depression angle of 10° or less. ,
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range in which the user in the first state of mind can perceive the color on the light-emitting surface. becomes,
When the user is in the second state, at least a part of the light-emitting area of the light-emitting surface may cause the user in the second state to be aware of the color on the light-emitting surface. to the extent possible,
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 10° or less and a depression angle of 10° or less,
When the user is in the second state, at least part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less, You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The range in which the user in the first state can perceive the color on the light emitting surface is larger than the range in which the user in the second state can perceive the color on the light emitting surface. narrow,
The control device is
When the user is in the second state, the light-emitting region of the light-emitting surface is wider than the light-emitting region of the light-emitting surface when the user is in the first state. so that
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range in which the user in the first state can perceive the color on the light-emitting surface;
When the user is in the second state, at least part of the light-emitting area of the light-emitting surface enables the user in the second state to be aware of the color on the light-emitting surface. to be within the
You may make it control the said illuminating device.

In a first lighting system according to the present disclosure,
The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less,
so that when the user is in the second state, at least a part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 40° or less and a depression angle of 40° or less; You may make it control the said illuminating device.

A first lighting system according to the present disclosure comprises:
Further comprising a detection sensor that detects the state of the user,
The control device may control the lighting device based on the detection result of the detection sensor.

In the first lighting system according to the present disclosure, the detection sensor may detect at least one of a blinking motion of the user, a number of times of blinking, a state of the pupil, a direction of gaze, and a motion of the face.

In the first lighting system according to the present disclosure, the detection sensor may have an imaging device that images the user.

In a first lighting system according to the present disclosure,
The control device is
so that the luminescent color of the light-emitting surface when the user of the space is in the first state is different from the luminescent color of the light-emitting surface when the user is in the second state,
You may make it control the said illuminating device.

In the first lighting system according to the present disclosure, the light emitting surface may be provided on a wall that partitions the space.

In the first lighting system according to the present disclosure, the amount of light emitted from a certain area of the light-emitting surface is the same as that of another certain area of the light-emitting surface that is closer to the ceiling that defines the space than that area. It may be less than the amount of light emitted from the area.

In the first lighting system according to the present disclosure, the amount of light emitted from an arbitrarily selected fixed area region of the light emitting surface is reduced by the amount of light emitted from another fixed area of the light emitting surface that is closer to the ceiling that defines the space than the region. may be less than or equal to the amount of light emitted from the area.

In the first lighting system according to the present disclosure, the amount of emitted light from a region of a certain area located within a range where the user can perceive the color on the light emitting surface is It may be less than the amount of emitted light from a certain area located outside the range where colors can be perceived.

The first lighting system according to the present disclosure may further comprise a base lighting device provided on the ceiling defining the space.

A first lighting method according to the present disclosure comprises:
A method of illuminating a space using a lighting device having a light emitting surface,
illuminating by causing the light emitting surface to emit light when the user of the space is in the first state;
illuminating by causing the light emitting surface to emit light when the user of the space is in a second state different from the first state;
a region of the light emitting surface that emits light when the user is in the first state and a region of the light emitting surface that emits light when the user is in the second state; is different.

A second lighting method according to the present disclosure comprises:
A method of illuminating a space using a lighting device having a light emitting surface,
detecting whether the user of the space is in a first state or a second state different from the first state;
illuminating the light-emitting surface by emitting light based on the detection result in the detecting step;
a region of the light emitting surface that emits light when the user is in the first state and a region of the light emitting surface that emits light when the user is in the second state; be different.

A second lighting system according to the present disclosure comprises:
a lighting device that has a light emitting surface and emits light into a space;
a control device that controls the lighting device,
The control device is
When the user of the space is in one of a first state and a second state different from the first state, the light-emitting region of the light-emitting surface is in the one state. It is outside the range where a certain user can be aware of the color on the light emitting surface,
When the user is in the other of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is in the other state. so that a person can be aware of the color on the light emitting surface,
controlling the lighting device;

A third illumination method according to the present disclosure includes:
A method of illuminating a space using a lighting device having a light emitting surface,
lighting the light-emitting surface when a user of the space is in a first state; and lighting the light-emitting surface when the user of the space is in a second state different from the first state. and illuminating the
When the user is in one of a first state and a second state different from the first state, the light-emitting region of the light-emitting surface is in the one state. Outside the range where the user can be aware of the color on the light emitting surface,
When the user is in the other state of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is used in the other state. It should be within the range where a person can be aware of the color on the light emitting surface.

A third illumination method according to the present disclosure includes:
A method of illuminating a space using a lighting device having a light emitting surface,
detecting whether the user of the space is in a first state or a second state different from the first state;
illuminating the light-emitting surface by emitting light based on the detection result in the detecting step;
When the user is in one of a first state and a second state different from the first state, the light-emitting region of the light-emitting surface is in the one state. Outside the range where the user can be aware of the color on the light emitting surface,
When the user is in the other state of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is used in the other state. It should be within the range where a person can be aware of the color on the light emitting surface.

According to the present invention, it is possible to effectively influence the psychological state of the user of the space.

FIG. 1 is a diagram for explaining an embodiment, and is a perspective view showing a lighting system. 2 is a top plan view of the illumination system shown in FIG. 1; FIG. FIG. 3 is a longitudinal sectional view showing an illumination device of the illumination system shown in FIG. 1; FIG. 4 is a vertical cross-sectional view showing a specific example of a surface light source device of the lighting device included in the lighting system of FIG. FIG. 5 is a view corresponding to FIG. 4 and a longitudinal sectional view showing another specific example of the surface light source device. FIG. 6 is a view corresponding to FIG. 4 and a longitudinal sectional view showing still another specific example of the surface light source device. FIG. 7 is a block diagram illustrating the illumination system shown in FIG. 1; FIG. 8 is a diagram for explaining a first example of a lighting method using the lighting system of FIG. FIG. 9 is a diagram for explaining a first example of a lighting method using the lighting system of FIG. FIG. 10 is a flowchart illustrating the illumination method shown in FIGS. 8 and 9; FIG. 11 is a diagram for explaining a second example of a lighting method using the lighting system of FIG. FIG. 12 is a diagram for explaining a second example of a lighting method using the lighting system of FIG. FIG. 13 is a diagram for explaining a third example of a lighting method using the lighting system of FIG. FIG. 14 is a diagram for explaining a third example of a lighting method using the lighting system of FIG. FIG. 15 is a diagram for explaining a fourth example of a lighting method using the lighting system of FIG. FIG. 16 is a diagram for explaining a fifth example of a lighting method using the lighting system of FIG. FIG. 17 is a view corresponding to FIG. 4 and a longitudinal sectional view showing still another specific example of the surface light source device. FIG. 18 is a view corresponding to FIG. 3 and a longitudinal sectional view showing a modified example of the lighting device. FIG. 19 is a view corresponding to FIG. 3 and a longitudinal sectional view showing another modification of the lighting device. 20 is an exploded perspective view showing the lighting device shown in FIG. 19. FIG. FIG. 21 is a view corresponding to FIG. 3 and a longitudinal sectional view showing still another modification of the lighting device. FIG. 22 is a view corresponding to FIG. 3 and a longitudinal sectional view showing still another modification of the lighting device.

A lighting system and a lighting method according to the present embodiment will be described below with reference to the drawings. In the drawings attached to this specification, for the convenience of illustration and ease of understanding, the scale, length-to-width ratio, etc. are appropriately changed and exaggerated from those of the real thing.

In addition, terms such as "parallel", "perpendicular", "identical", etc. that specify shapes and geometric conditions and their degrees used in this specification are not bound by a strict meaning, It is interpreted to include the extent to which similar functions can be expected.

Furthermore, the terms "sheet", "film" and "plate" are not to be distinguished from each other as used herein solely based on a difference in designation. For example, "plate" is a concept that includes members that can be called sheets and films.

In addition, in the drawings referred to in this embodiment and its specific examples and modifications, the same parts or parts having similar functions are denoted by the same reference numerals or similar reference numerals, and repeated description thereof may be omitted. .

1 to 22 are diagrams for explaining an embodiment of the present disclosure, showing some specific examples of the lighting system and the lighting method. Among them, FIG. 1 is a perspective view showing a specific example of a lighting system 10 according to an embodiment. 2 is a plan view showing the illumination system 10 of FIG. 1. As shown in FIG. A lighting system 10 according to an embodiment described below includes a lighting device having a light emitting surface and emits light into a space S. FIG. The lighting system 10 can work on the psychological state of the user H staying in the space S to bring about the user H's desired psychological state. In particular, the lighting system described below is devised to effectively influence the psychological state of the user H of the space. More specifically, by changing the lighting mode according to the state of the user H, it is possible to exert an appropriate psychological effect according to the state of the user H.

A lighting system 10 and a lighting method according to an embodiment will be described below with reference to the illustrated specific examples.

In the example shown in FIGS. 1 and 2, lighting system 10 illuminates and directs space S. In the example shown in FIGS. The illustrated space S is defined by first to fourth walls W1 to W4, a ceiling CE and a floor F. FIG. The space S is a rectangular parallelepiped space. This space S is the interior space of a room or chamber intended to be utilized by humans. More specifically, the space S illuminated by the lighting system 10 can be a conference room, an office, a classroom, a study room, an internal space of a study room, or the like. In the illustrated example, a table T and a chair C are provided in the center of the space S. The chairs include a first chair C1 positioned between the table T and the second wall W2 and a second chair C2 positioned between the table T and the first wall W1. A doorway D is provided in the fourth wall W4. It becomes possible to enter and exit the space S through the doorway D.

The user H stays at a specific position within the space S, as in a general room. Specifically, the user H sits on the first chair C1 or the second chair C2 and uses the table T to conduct some work or have a meeting. That is, in the illustrated example, the user sits on the first chair C1 facing the first wall W1, or sits on the second chair C2 facing the second wall W2. , spend a certain amount of time in the space S. The lighting system 10 is intended to exert a psychological effect on the user H who spends a certain amount of time in a specific position in the space S in a specific posture.

The lighting system 10 has a base lighting device 13 and a lighting device 20 as shown in FIG. The lighting system 10 further includes a detection sensor 18 that detects the state of the user H in the space S, and a control device 15 that adjusts the controlled lighting method of the lighting device 20 based on the detection result of the detection sensor 18. have.

As shown in FIGS. 1 and 2, the base lighting device 13 is attached to the ceiling CE and emits illumination light Lx into the space S from above. The base lighting device 13 may be fixed to the ceiling CE or suspended from the ceiling CE. The base lighting device 13 assists in grasping the inside of the space S through human vision. Therefore, as the base lighting device 13, a general indoor lighting fixture can be used. Although the illumination light Lx emitted from the base illumination device 13 is not particularly limited, natural illumination can be achieved by using white.

The lighting device 20 has a decorative sheet 40 that forms the surface of the wall W and a surface light source device 50 that illuminates the decorative sheet 40 . The decorative sheet 40 forms the light emitting surface EP of the lighting device 20 facing the light emitting surface 50 a of the surface light source device 50 . Separately from the base lighting device 13 whose main purpose is to improve the brightness of the space S, the lighting device 20 makes the surface of the wall W function as a light emitting surface EP, thereby imparting an expansiveness to the limited space S. be able to. In particular, a limited range of the surface of the wall W can be used as the light-emitting surface EP, and the surface light source device 50 serving as the light source of the lighting device 20 can be hidden with the decorative sheet 40 . With this device, the space S can be produced in a state in which the presence of the light source is effectively reduced, thereby making it possible to effectively enhance the atmosphere of the space S.

As shown in FIG. 2, the lighting device 20 includes first to fourth lighting devices 21-24.
The first lighting device 21 is provided on the first wall W<b>1 and emits light into the space S. The second lighting device 22 is provided on the second wall W2 and emits light into the space S. The third lighting device 23 is provided on the third wall W3 and emits light into the space S. The fourth lighting device 24 is provided on the fourth wall W4 and emits light into the space S. The first lighting device 21 is arranged in front of the user H seated on the first chair C1. The second lighting device 22 is arranged in front of the user H seated on the second chair C2.

The first to fourth lighting devices 21 to 24 may have the same configuration although their installation positions are different. Therefore, in the following descriptions common to the first to fourth lighting devices 21 to 24, the reference numeral "20" is used, and the first to fourth lighting devices 21 to 24 are not distinguished from each other. It will be described as a description of the device 20 .

The illumination device 20 has the decorative sheet 40 and the surface light source device 50 as main components, as described above. In the illustrated example, the lighting device 20 is formed in a plate shape as a whole, and part or all of it constitutes the building material panel BP. As shown in FIG. 2, the building panel BP may be overlaid on the wall body WB to form a wall W of the structure together with the wall body WB. In such an example, all or part of the constituent elements of the lighting device 20 may be handled as an assembly kit for producing the building material panel BP or structure, and may be distributed or sold. Alternatively, the building material panel BP alone may form a wall W of a structure such as a building.

In one specific example shown in FIG. 3 , the lighting device 20 has auxiliary building materials 27 , fasteners 28 and boards 30 in addition to the decorative sheet 40 and the surface light source device 50 . FIG. 4 is a longitudinal sectional view showing the surface light source device 50 shown in FIG. 3. As shown in FIG. Hereinafter, the illumination device 20 will be described mainly with reference to FIGS. 3 and 4. FIG.

First, the decorative sheet 40 will be described. The decorative sheet 40 is exposed in the space S. The decorative sheet 40 forms the surface of the illumination device 20 on the side of the most light. That is, the decorative sheet 40 forms the light-emitting surface EP of the lighting device 20 . As the decorative sheet 40, wallpaper of buildings, interior materials such as floors and ceilings, interior materials of moving bodies such as vehicles, and members forming the outermost surfaces of furniture, electrical equipment, and the like can be used.

The decorative sheet 40 includes a first area Z1 and a second area Z2 adjacent to the first area Z1. The first region Z1 of the decorative sheet 40 is a region facing the light exit surface 50a of the surface light source device 50. As shown in FIG. That is, the first area Z1 of the decorative sheet 40 is an area forming the light emitting surface WP of the lighting device 20. As shown in FIG. The second region Z2 is a region of the decorative sheet 40 that is shifted from the position facing the light exit surface 50a.

The decorative sheet 40 has visible light transmittance at least in the first region Z1 forming the light emitting surface WP. Therefore, at least part of the light emitted from the light exit surface 50 a of the surface light source device 50 can pass through the first region Z<b>1 of the decorative sheet 40 . Since the decorative sheet 40 is illuminated with transmitted light in this manner, a white wallpaper having a relatively high transmittance is suitably used as the decorative sheet 40 . However, wallpaper with a relatively low transmittance, such as wood grain wallpaper, can be sufficiently effectively transilluminated to achieve the effects described later, and the pattern of the decorative sheet 40 is not particularly limited. The visible light transmittance in the visible light range in the first region Z1 of the decorative sheet 40 is preferably 1.0% or more, more preferably 10% or more. The visible light transmittance is measured using an infrared-visible-ultraviolet spectrophotometer (UV3100PC manufactured by Shimadzu Corporation), and the spectral transmittance in the wavelength range of 380 nm or more and 780 nm or less is measured according to JIS A5759-2008. It is calculated by a prescribed calculation formula.

As shown in FIG. 3, the first area Z1 and the second area Z2 are arranged in a uniaxial direction. The first region Z1 is located on one side in the uniaxial direction, and the second region Z2 is located on the other side in the uniaxial direction. More specifically, the first area Z1 and the second area Z2 are arranged in the first direction d1. This first direction d1 is along the vertical direction in the illustrated example. The first area Z1 is located on the first side s1 in the first direction d1, and the second area Z2 is located on the second side s2 in the first direction d1. The first side s1 in the first direction d1 is the upper side in the vertical direction, and the second side s2 in the first direction d1 is the lower side in the vertical direction. That is, in the illustrated example, the light emitting surface EP of the lighting device 20 is positioned between the ceiling CE and the floor F on the side close to the ceiling CE. In other words, the light-emitting surface EP of the lighting device 20 is positioned above the wall W in the vertical direction.

Next, the board 30 will be explained. As shown in FIG. 3, the board 30 is a plate-like member. The board 30 is arranged facing at least the second region Z2 of the decorative sheet 40 .
The decorative sheet 40 may be attached to the board 30 . In this case, the board 30 can stably support the decorative sheet 40 .

In the example shown in FIG. 3, the board 30 is arranged facing both the second zone Z2 and the first zone Z1. This board 30 is provided with a recess 31 at a position facing the first area Z1. A surface light source device 50 is accommodated in the concave portion 31 of the board 30 . According to the example of FIG. 3 , the surface light source device 50 can be stably supported by the board 30 . The fastener 28 is provided on the board 30 and fixes the surface light source device 50 on the board 30 . Further, in addition to or instead of the fasteners 28, the board 30 and the surface light source device 50 may be fixed by a bonding layer containing an adhesive, a pressure-sensitive adhesive, or the like.

The light exit surface 50a of the surface light source device 50 is preferably located on the same plane as the surface 30a of the board 30 facing the second area Z2 of the decorative sheet 40. As shown in FIG. The decorative sheet 40 is laminated on the board 30 and the surface light source device 50 positioned in this way. In this case, a step is less likely to be formed between the surface 30a of the board 30 and the light exit surface 50a of the surface light source device 50, and the design of the decorative sheet 40 is due to the fact that the step is visible through the decorative sheet 40. Decrease can be effectively suppressed.

The board 30 is determined according to the application of the decorative sheet 40 . When the decorative sheet 40 is a member that decorates the surfaces of walls, floors, ceilings, etc., the board 30 may be made of wood such as veneer, plywood, laminated wood, particle board, fiber board, etc. It can be an inorganic non-metallic plate made of a plate material, cement-based material such as concrete or mortar, a gypsum board, calcium silicate or the like, or a metal plate made of iron, aluminum or the like. When the decorative sheet 40 serves as an interior material for a moving object such as a vehicle, the board 30 is, for example, a resin plate or a metal plate. When the decorative sheet 40 constitutes furniture or electrical appliances, the board 30 is, for example, a wooden board or a resin board. In applying the lighting device 20 to the building material panel BP, the board 30 preferably has flame resistance and fire resistance.

In FIG. 3 , along with the illustration of the fastener 28 , the decorative sheet 40 is shown with a gap between it and the board 30 and the surface light source device 50 . However, they may be attached to the board 30 and the surface light source device 50 without leaving a gap.

The auxiliary building material 27 is a member provided at the interface between the ceiling CE and the wall W or at an internal corner. The auxiliary building material 27 covers the joint between the ceiling CE and the wall W to improve the design. As the auxiliary building material 27, members called "circumference" or "baseboard" can be used. However, it is also possible to omit the auxiliary building material 27 . The auxiliary building material 27 extends in a direction perpendicular to the first direction d1. The auxiliary building material 27 may be fixed or may be detachable for replacement.

Next, the surface light source device 50 that illuminates the decorative sheet 40 from behind will be described in detail. The surface light source device 50 has a light exit surface 50a that emits planar light. In the illustrated example, the surface light source device 50 is positioned such that its light exit surface 50 a faces only a portion of the decorative sheet 40 . Various devices capable of emitting planar light can be used as the surface light source device 50 . For example, a device having a light source 51 and an optical member 55 that converts light emitted from the light source 51 into planar light can be used as the surface light source device 50 .

Here, a specific example of the surface light source device 50 will be described mainly with reference to FIG. The surface light source device 50 shown in FIG. 4 is configured as an edge light type surface light source device. This surface light source device 50 has a light source 51 , a light diffusion sheet 56 as an optical member 55 , a reflection sheet 57 and a light guide plate 60 .

The light source 51 has a light emitter 52 that emits light. The light emitter 52 is not particularly limited, and various members that emit light can be widely used. Specifically, for example, a cold cathode tube, a point-like light emitting diode (LED), an incandescent lamp, a laser oscillation device, or the like can be used as the light emitter 52 of the light source 51 . In the illustrated example, the light source 51 has a plurality of point-like light emitters 52 . This light emitter 52 is configured by, for example, a light emitting diode. In the illustrated example, the multiple light emitters 52 are held by the auxiliary building material 27 . The plurality of light emitters 52 are arranged at intervals along the second direction d2 shown in FIG. The second direction d2 is along one side edge of the light guide plate 60 and extends horizontally in parallel with the surface of the light guide plate 60 . If the auxiliary building material 27 is detachable, the multiple light emitters 52 can be removed from the wall W together with the auxiliary building material 27 to replace some or all of the multiple light emitters 52 .

It is known that the color of the illumination light emitted from the illumination system 10 affects the psychological state of humans. For example, when the space S is illuminated with bright green illumination light or reddish purple illumination light, it is said that the user H of the space S is made lively. Similarly, when mauve-colored illumination light or iris-colored illumination light is used, it is said to have the effect of relieving drowsiness from the user H. Further, it is said that the use of skin-colored illumination light has the effect of causing the user H to concentrate. Further, when lemon-colored illumination light or skin-colored illumination light is used, it is said that there is an effect of imparting comfort to the user H and making the user H feel relaxed. The lighting system 10 of the present embodiment is intended to positively affect the psychological state of the user H by using such illumination light, and to effectively affect the psychological state of the user H. FIG.

In the illustrated example, the light emitted from the light source 51 of the surface light source device 50 becomes the illumination light from the lighting device 20 . Therefore, the light emitter 52 of the light source 51 is selected so as to emit light in a wavelength range corresponding to the desired mental state so that the user H can be brought into the desired mental state. In particular, it is preferable that the color of the light emitted from the light source 51 is selectable so that illumination can be performed with light of a desired color. As an example, the light source 51 may have multiple types of light emitters 52 capable of emitting light in different wavelength ranges. In this case, by adjusting the output of each light emitter 52, it is possible to perform illumination with various colors of illumination light through additive color mixture. Typically, the light source 51 includes a luminous body capable of emitting red light, a luminous body capable of emitting green light, and a luminous body capable of emitting blue light. It is possible to select the color of the illumination light at , from colors in the entire range on the chromaticity diagram.

The light guide plate 60 is a plate-like member having a pair of main surfaces 60a and 60b and side surfaces positioned between the pair of main surfaces 60a and 60b. One main surface forms the light output surface 60a, and the other main surface forms the back surface 60b. The main surfaces 60a and 60b are typically rectangular in plan view. The main surfaces 60a and 60b have a pair of side edges extending along the first direction d1 and a pair of side edges extending along the second direction d2 perpendicular to the first direction d1. The side surfaces include a light incident surface 60c and an opposite surface 60d (see FIG. 20) facing in the first direction d1.

As shown in FIG. 4, the light incident surface 60c is positioned on the first side s1 in the first direction d1. The light incident surface 60c extends in the second direction d2 along the auxiliary building material 27. As shown in FIG. The light incident surface 60 c faces the plurality of light emitters 52 held by the auxiliary building material 27 . The multiple light emitters 52 are arranged at intervals along the second direction d2, which is the longitudinal direction of the light incident surface 60c.

As shown in FIG. 4 , light emitted from the light source 51 enters the light guide plate 60 and travels through the light guide plate 60 . Light guide plate 60 includes an outcoupling element 61 . The extraction element 61 changes the direction of travel of the lights L41 and L42 traveling through the light guide plate 60 . In this surface light source device 50, the light emitted from the light source 51 is incident on the light guide plate 60 through the light incident surface 60c, and travels through the light guide plate 60 through reflection, especially total reflection. The lights L41 and L42 traveling through the light guide plate 60 are caused to change their traveling directions by the extraction element 61, especially by being scattered, so that they are incident on the pair of main surfaces 60a and 60b of the light guide plate 60 at an angle of incidence less than the critical angle for total reflection. It is possible for the light to enter and exit from the light guide plate 60 .

The light whose traveling direction has been changed by the extraction element 61 is emitted from the light guide plate 60 via one of the pair of main surfaces 60a and 60b. A light diffusion sheet 56 is provided facing the light exit surface 60 a of the light guide plate 60 . Lights L 41 and L 42 emitted from the light exit surface 60 a of the light guide plate 60 then enter the light diffusion sheet 56 . The light diffusing sheet 56 has a light diffusing function, and can adjust the luminance angular distribution caused by the transmitted light. The light diffusion sheet 56 forms the light exit surface 50 a of the surface light source device 50 . The light diffused by the light diffusion sheet 56 is emitted from the surface light source device 50 toward the decorative sheet 40 . The light diffusion sheet 56 can employ various configurations capable of exhibiting a light diffusion function. The diffusion characteristics of the light diffusion sheet 56 may be isotropic or anisotropic.

A reflective sheet 57 is provided facing the rear surface 60 b of the light guide plate 60 . The reflective sheet 57 can reflect the light emitted from the back surface 60 b and direct it toward the light guide plate 60 and the light diffusion sheet 56 . By providing the reflection sheet 57, the amount of light emitted from the light exit surface 50a of the surface light source device 50 can be increased. Thereby, the utilization efficiency of the light emitted from the light source 51 can be improved. The reflective sheet 57 may employ various configurations capable of exhibiting a light reflecting function. The reflection characteristic of the reflection sheet 57 may be specular reflection or diffuse reflection. The diffuse reflection characteristics of the reflective sheet 57 may be isotropic or anisotropic.

As extraction element 61, various elements that can change the traveling direction of light traveling through light guide plate 60 can be used. In the example shown in FIG. 4 , the light guide plate 60 has a plate-like light guide plate main body 65 . The light guide plate main body 65 has an uneven surface 65 a as a surface that forms one main surface 60 b of the light guide plate 60 . In the illustrated example, the back surface 60b of the light guide plate 60 is formed by this uneven surface 65a. The concave-convex surface 65a is formed by providing the light guide plate main body 65 with concave portions 65b. In this example, the light guide plate main body 65 can be made of a resin having visible light transmittance.

As another example, the outcoupling element 61 can be a light scattering layer 66 laminated to the light guide plate body 65, as shown in FIG. In the example shown in FIG. 5 , the light guide plate 60 has a light guide plate body 65 and a light scattering layer 66 . The light scattering layer 66 has a support layer 66a functioning as a binder and light scattering elements 66b dispersed within the support layer 66a. The support layer 66a can be made of a resin having visible light transparency. The light scattering element 66b has a function of changing the traveling direction of light traveling through the light scattering layer 66 by reflection, refraction, diffraction, or the like.
The light scattering element 66b may have a refractive index different from that of the support layer 66a, or may be made of a material having light reflectivity such as metal. Specific examples of the light scattering element 66b include metallic compounds, gas-containing porous substances, resin beads surrounding metallic compounds, white fine particles, air bubbles, and particles having a different refractive index than the surroundings. In the example shown in FIG. 5, the lights L51 and L52 traveling through the light guide plate 60 due to reflection on the light exit surface 60a and the back surface 60b collide with the light scattering elements 66b in the light scattering layer 66 to change their traveling directions. After that, the light can be emitted from the light guide plate 60 .

In the example of FIG. 5, it is preferable that the refractive index of the support layer 66a of the light scattering layer 66 is equal to or higher than the refractive index of the light guide plate main body 65. As shown in FIG. When the refractive index of the support layer 66a of the light scattering layer 66 is lower than that of the light guide plate main body 65, the light L53 traveling through the light guide plate main body 65 is totally reflected at the interface between the light guide plate main body 65 and the light scattering layer 66. As a result, there is a possibility that the light cannot enter the light scattering layer 66 . After entering the light guide plate 60 from the light entrance surface 60c, the light L53 travels through the light guide plate main body 65 to the opposite surface 60d. The presence of such light reduces the energy efficiency of the light source 51 . By setting the refractive index of the support layer 66a to be equal to or higher than the refractive index of the light guide plate main body 65, total reflection at the interface between the light guide plate main body 65 and the light scattering layer 66 is effectively prevented, and the light scattering layer 66 is extracted. It can function more effectively as element 61.

As yet another example, as shown in FIG. 6, light scattering elements 67 functioning as outcoupling elements 61 may be dispersed within the light guide plate body 65 . In the light guide plate 60 shown in FIG. 6 , the light L61 traveling inside the light guide plate main body 65 collides with the light scattering elements 67 to be scattered and emitted from the light guide plate 60 . The light scattering element 67 can be configured in the same manner as the light scattering element 66b described above.

Also, the light guide plate 60 may include multiple types of extraction elements 61 . In the example shown in FIG. 6, a light guide plate main body 65 of the light guide plate 60 contains a light scattering element 67 and further has an uneven surface 65a forming a rear surface 60b of the light guide plate 60. As shown in FIG.

Furthermore, the light scattering power due to the extraction elements 61 in each region of the light guide plate 60 may not be constant and may be different. That is, the light scattering power of the light guide plate 60 may be changed in each region along the plate surface. Furthermore, in other words, the light scattering power in a certain region of the light guide plate 60 may be different from the light scattering power in other regions shifted from the region along the plate surface. By changing the light scattering power in each region along the panel surface of the light guide plate 60, it is possible to adjust the amount of light emitted from each region.

The light scattering power is the strength of the light guide plate 60's ability to scatter light passing through it. The degree of light scattering ability can be evaluated, for example, by using the haze value [%] measured according to JIS-K7361-1, and the higher the haze value [%], the higher the light scattering ability. It will be. Therefore, in the illustrated example, the transmission haze value of light transmitted in the normal direction to the plate surface of the light guide plate 60 may not be constant in each area of the light guide plate 60 but may have different values.
The haze value [%] can be measured by a method based on JIS K7136 using a haze meter (manufactured by Murakami Color Research Laboratory, product number: HM-150).

As shown in FIG. 4, in the case where the extraction element 61 is unevenness provided on the main surfaces 60a and 60b of the light guide plate 60, the area of the unit area along the plate surface where the unevenness is provided is By increasing the ratio, that is, the area ratio, the light scattering power can be increased. Further, when the extracting element 61 is an uneven surface 65a formed by a concave portion 65b or a convex portion, the value of the ratio of the depth H1 of the concave portion 65b or the height of the convex portion to the thickness H2 of the light guide plate 60, That is, by increasing the value of H1/H2, the light scattering ability can be increased. When the extraction element 61 includes the light scattering elements 66b and 67 contained in the light guide plate 60, increasing the volume ratio of the light scattering elements 66b and 67 in the light guide plate 60, increasing the particle density, is increased and the refractive index difference at the interface formed by the light scattering elements 66b and 67 is increased, the light scattering power can be increased.

By the way, in the present embodiment, the light emitting area LZ that actually emits light toward the space S in the light emitting surface EP of the illumination device 20 can be changed. In particular, in the present embodiment, by changing the light emitting region LZ according to the state of the user H in the space S, for example, the psychological state, work state, etc., it is possible to exert an appropriate psychological effect according to the state of the user H. is possible.

For example, the illustrated illumination device 20 is configured as an edge light type surface light source device. As described above, the light beams L41, L42, L51, and L52 traveling from one side s1 to the other side s2 in the first direction d1 in the light guide plate 60 are acted upon by the extracting element 61 to exit the light guide plate 60. inject. In such a surface light source device 50 , if the amount of light entering the light guide plate 60 from the light source 51 is small, the light does not reach the opposite surface 60 d of the light guide plate 60 . That is, by adjusting the amount of light from the light emitter 52 of the light source 51, the size of the light emitting area LZ in the light emitting surface EP can be adjusted.

More specifically, when the output of the light emitter 52 of the light source 51 is high, a large amount of light enters the light guide plate 60 and the light is emitted from the entire light emitting surface 60 a of the light guide plate 60 . At this time, the entire area of the light emitting surface EP can be used as the light emitting area LZ. On the other hand, when the output of the light emitter 52 of the light source 51 is low, a small amount of light enters the light guide plate 60, and the light is emitted only from the region s1 of the light exit surface 60a of the light guide plate 60 in the first direction d1. emit. At this time, only the region on one side s1 in the first direction d1 of the light emitting surface EP can be the light emitting region LZ. That is, in the illustrated illumination device 20, by controlling the amount of light emitted from the light emitter 52 of the light source 51, the light emitting region LZ is shifted from the end of the light emitting surface EP on one side s1 in the first direction d1 to the light emitting surface EP in the first direction. Up to which point in d1 can be controlled. Further, the length along the first direction d1 of the light emitting region LZ starting from the end of one side s1 in the first direction d1 of the light emitting surface EP is controlled by adjusting the amount of light emitted from the light emitter 52. can do.

Further, when the illustrated surface light source device 50 is used, the amount of light emitted from a certain area of the light exit surface 50a can be distributed on the light exit surface 50a. Along with this, the amount of emitted light emitted from a certain fixed area region of the light emitting surface EP has a distribution on the light emitting surface EP. The distribution of the amount of emitted light on the light emitting surface EP can be controlled by changing the light scattering ability of the extraction element 61 described above within the light guide plate 60 . As an example, the amount of light emitted from a certain area of the light emitting surface EP increases on one side s1 close to the light source 51 in the first direction d1. Conversely, the amount of light emitted from the constant area region of the light emitting surface EP is reduced on the other side s2 away from the light source 51 in the first direction d1. That is, the amount of light emitted from a certain area of the light-emitting surface EP is greater than the amount of light emitted from another area of a certain area of the light-emitting surface EP that is closer to the ceiling CE that defines the space S than that area. less. Furthermore, the amount of light emitted from an arbitrarily selected fixed-area region of the light-emitting surface EP is equal to the amount of light emitted from other fixed-area regions of the light-emitting surface EP that are closer to the ceiling CE that defines the space S than that region. It is as follows.

The amount of light emitted from a certain area of the light emitting surface EP can be evaluated based on the measurement result of the illuminance [lx] measured with a sensor in close contact with the light emitting surface EP. An illuminance meter TR-74Ui manufactured by T&D Co., Ltd. is used to measure the illuminance.

Next, the control device 15 and the detection sensor 18 will be described. FIG. 7 is a block diagram showing the illumination system 10. As shown in FIG. As shown in FIG. 7, the detection sensor 18 is electrically connected with the control device 15 . The control device 15 is also electrically connected to the first to fourth lighting devices 21-24. The control device 15 controls the first to fourth illumination devices 21 to 24 based on the detection result of the detection sensor 18. FIG.

First, the detection sensor 18 detects the state of the user H in the space S. As the state of the user H, a psychological state and a work state can be exemplified. Mental states can be exemplified by drowsiness, concentration, distraction and distraction, alertness or tension, relaxation or calmness, and the like. Examples of the work state include the state of operating a small device such as a computer, the state of studying, the state of reading a book, the state of having a conversation, discussion, and meeting.

The detection sensor 18 detects one or more of user H's blinking motion, number of times of blinking, pupil state, line of sight direction, and facial motion. By detecting the state of the pupils, it is possible to ascertain whether the user H is drowsy or concentrated. By detecting the blinking action, the number of blinks, and the direction of the line of sight, it is possible to detect the state in which the user H is distracted and distracted, or the state in which the user is alert or tense. By detecting the direction of the line of sight, the movement of the face, etc., it is possible to detect the state in which the user H is concentrating. By detecting the state of the pupils, the direction of the line of sight, the movement of the face, etc., it is possible to detect whether the user H is relaxed or calm. In addition, by detecting the direction of the line of sight, the movement of the face, etc., it is possible to grasp the work content of the user.

An imaging device that images the user H can be used as such a detection sensor 18 . A camera or smart glasses can be used as the imaging device. According to the imaging device, it is possible to detect changes in facial color, body temperature, heart rate, etc., in addition to the motion of the user H described above. In the example shown in FIGS. 1 and 2, detection sensors 18 are provided on each of the ceiling CE and the first to fourth walls W1 to W4. For example, the plurality of detection sensors 18 can detect the state of the user H seated on the first chair C1 and the second chair C2.

As the detection sensor 18, a line-of-sight sensor that detects the line-of-sight direction or an electroencephalograph that detects brain waves can be used. An electroencephalograph can function as a sensitivity analyzer that analyzes sensitivity such as curiosity, stress, concentration, calmness, comfort, disgust, exhilaration, etc. based on electroencephalograms. By incorporating a plurality of types of sensors as the detection sensors 18 into the lighting device 20, the state of the user H can be grasped more accurately. Further, as the detection sensor 18, various means for detecting human condition, such as physical condition, such as means for measuring heart rate, pulse, myoelectric potential, etc., can be used. The detection sensor 18 may be worn or mounted on the user H in the space S.

Further, in the illustrated example, the detection sensor 18 can detect the presence or absence of the user H in the space S. The detection sensor 18 can detect the presence or absence of the user H by capturing an image of the user H's face and appearance and by detecting the user's H body temperature.

Next, the control device 15 will be explained. The control device 15 controls emission of illumination light from the illumination device 20 . Especially in this embodiment, the control device 15 can control the size of the light emitting region LZ. The control device 15 can control the output from each light emitter 52 by, for example, controlling power supplied from a power source (not shown) to each light emitter 52 of the surface light source device 50 .

In the illustrated illumination device 20, a region of the light-emitting surface EP from the end that is one side s1 in the first direction d1 to a certain length along the first direction d1 is a light-emitting region LZ that actually emits light. becomes. By adjusting the output of each light emitter 52, the length of the light emitting region LZ along the first direction d1 can be adjusted. Specifically, by increasing the output of each light emitter 52, the length of the light emitting region LZ along the first direction d1 is increased, and by decreasing the output of each light emitter 52, the length of the light emitting region LZ is increased in the first direction d1. The length along direction d1 is shortened.

Also, the control device 15 can control the color of the illumination light by adjusting the output of each light emitter 52 . As described above, the light source 51 of the illumination device 20 includes multiple types of light emitters 52 capable of emitting light in different wavelength ranges. In this case, the color of the illumination light can be controlled to various colors by additive color mixture. Therefore, the control device 15 can change the emission color by adjusting the output of each light emitter 52, and can color the light emission region LZ of the light emission surface EP with a desired color. As already mentioned, depending on the color of the illuminating light, it is possible to induce a certain psychological state in the user H.

A specific aspect of the control device 15 is not particularly limited. As an example, the control device 15 shown in FIG. 7 has a storage section 15a, a calculation section 15b, and an injection control section 15c. Information used by the control device 15 to control the emission of light from the illumination device 20 is stored in the storage unit 15a. For example, the storage unit 15a may store the preferred size of the light emitting region LZ according to each state of the user H, the preferred color of illumination light according to each state of the user H, and the like. The calculation unit 15b calculates the light emission output of each light emitter 52 included in the lighting device 20 based on the information stored in the storage unit 15a. The emission control unit 15c adjusts the power supply to the light emitter 52 of the lighting device 20 so that the light emitter 52 emits light with the light emission output calculated by the calculation unit 15b.

The control device 15 is incorporated in, for example, an electric circuit that supplies power from a power source to the light emitter 52 of the light source 51, and stores a control circuit that controls the operation of circuit elements of the electric circuit and data used for processing of the control circuit. It consists of hardware such as a storage device. At least part of the control device 15 may be configured by software.

The control device 15 may be wholly provided outside the building material panel BP, or at least part of it may be provided inside the building material panel BP or behind the ceiling CE. Moreover, the control device 15 may be capable of cooperating with other components through communication through a network, with some components thereof. Also, the control device 15 may be partly located on a device capable of communicating with other components through an external network, such as a cloud server or database. Furthermore, the control device 15 may be connected to a plurality of lighting devices 20 that illuminate different spaces S through a network such as the Internet. In this example, one controller 15 can control the lighting in the spaces S spaced apart from each other.

Next, an illumination method of the illumination system 10 configured as above will be described.

In the present embodiment, when the user H of the space S is in the first state, the light emitting area LZ of the light emitting surface EP that actually emits light is in the second state different from the first state. is different from the light-emitting area LZ of the light-emitting surface EP that actually emits light.

It is known that the color of the illumination light of the illumination device 20 can affect the psychological state of the user H of the space S. For example, bright green and reddish purple affect the human psychological state to cause "liveliness" and "aggressiveness". In addition, mauve and iris colors act on the psychological state of human beings to remove "drowsiness".

Furthermore, the inventors of the present invention conducted extensive studies and found that when humans can be aware of the color on the light emitting surface EP of the lighting device 20, that is, when humans can notice the color of the light emitting surface EP, the psychological state of the person It had a great influence on the human being, and was able to quickly guide the psychological state of the person in question to the target psychological state. On the other hand, not only the conscious influence range XA on the light emitting surface EP in which the human being can be aware of the color, but also the color of the light emitted from the area on the light emitting surface EP other than the conscious influence range XA, that is, the unconscious influence range YA. , can affect the psychological state of humans. Humans are unconsciously affected by the color of the illumination light Ly reaching their eyes, and are led to a predetermined psychological state corresponding to the color of the illumination light Ly. When the light-emitting region LZ on the light-emitting surface EP is set only within the unconscious influence range YA, it is extremely effective in continuously maintaining the target psychological state after it is obtained. In addition, when the illumination light Ly is emitted only from the unconscious influence range YA, human beings do not see the colored range on the light emitting surface EP and are effectively prevented from being distracted.

Therefore, by changing the size of the light emitting area LZ in the light emitting surface EP according to the state of the user H in the space S illuminated by the lighting device 20, the psychological state of the user H can be affected. can work effectively.

The illumination method of this embodiment will be described in further detail below based on some specific examples.
However, in a plurality of specific examples described below, the same reference numerals or similar reference numerals are given to identical parts or parts having similar functions, and repeated explanation thereof may be omitted.

The specific example described below is a lighting method using the lighting device 20 described above.
However, in the following description and the drawings referred to in the following description, the psychological state of the user H seated in the first chair C1 is affected by using the first lighting device 21 arranged facing the user. Give an example. In these examples, the second to fourth lighting devices 22 to 24 emit light in the same color as the first lighting device 21 from the light emitting region LZ having the same size as the first lighting device 21. You may make it Alternatively, the emission of light from the second to fourth lighting devices 22 to 24 may be stopped.

(first example)
First, the first example will be described with reference to FIGS. 8 to 10. FIG.

In the first example shown in FIGS. 8 and 9, the detection sensor 18 can detect the presence or absence of the user H in the space S first. Moreover, the detection sensor 18 detects a state in which the user H of the space S is feeling sleepy as the first state. For example, the detection sensor 18 can detect whether or not the subject is drowsy by observing the position and movement of the eyelids.

When the detection sensor 18 detects that the user H is present in the space S, the control device 15 turns on the base lighting device 13 and the lighting device 20 . At this time, the base lighting device 13 emits illumination light Lx having the same color as natural light, for example. As a result, the space S becomes brighter with a natural feeling. On the other hand, the illumination device 20 emits illumination light Ly having a color that induces a target psychological state from the light emitting surface EP. In this example, the illumination device 20 adjusts the output of each light emitter 52 so as to emit mauve or iris light, which is said to have the effect of relieving drowsiness.

The amount of light emitted from the base lighting device 13 intended to brighten the space S is a lighting device intended to affect the psychology of the user H and cause the user H to have a target psychological state. It is set larger than the amount of light emitted from 20 .

When the detection sensor 18 detects that the user H is in the first state and feels drowsy, the control device 15 detects that the user H is drowsy. A light emitting region LZ is set to a size different from the state. Especially in the first example, as shown in FIG. 8, when the user H is in the first state of being drowsy, the control device 15 emits the illumination light Ly from the first light emitting area LZ1 of the light emitting surface EP. inject. As shown in FIG. 9, the control device 15 emits the illumination light Ly from the second light-emitting region LZ2 of the light-emitting surface EP when the user H is in the second state in which he/she is not drowsy.

The first light emitting region LZ1 and the second light emitting region LZ2 are regions that extend along the first wall W1. As shown in FIGS. 8 and 9, the first light emitting region LZ1 and the second light emitting region LZ2 extend along the first direction d1. The length of the first light emitting region LZ1 along the first direction d1 is longer than the length of the second light emitting region LZ2 along the first direction d1. In addition, the first light emitting region LZ1 and the second light emitting region LZ2 also extend in the second direction d2 along the depth direction of the paper surface of FIGS. The length of the first light emitting region LZ1 along the second direction d2 is the same as the length of the second light emitting region LZ2 along the second direction d2. As a result, the first light emitting region LZ1 is wider than the second light emitting region LZ2.

Here, FIGS. 8 and 9, and FIGS. 11 to 16, which will be described later, show a consciousness influence range, which is a range in which the user H seated on the first chair C1 can perceive colors on the light emitting surface EP. XA is indicated. Further, in these figures, the angular range in which colors can be perceived is shown as a range sandwiched between two straight lines La and Lb. The user H can notice a change in color within the range of influence XA in each state in the space S. Conversely, the user H cannot notice the change in color in the unconscious influence range YA, which is outside the conscious influence range XA.
As shown in FIGS. 8 and 9, the consciousness influence range XA in the first state with drowsiness and the consciousness influence range XA in the second state without drowsiness are different. According to experiments conducted by the inventors of the present invention, the consciousness influence range XA in the first state of drowsiness is within the range expected at an elevation angle of 10° or less and a depression angle of 10° or less with respect to the horizontal direction from the position of the user's eyes. could be considered to be located in In addition, the consciousness influence range XA in the second state, which is a normal state without drowsiness, is considered to be located within a range that can be expected at an elevation angle of 30° or less and a depression angle of 30° or less with respect to the horizontal direction from the eye position of the user. was made.

Then, as shown in FIG. 8, in the first state of drowsiness, the light emission region LZ extends into the consciousness influence range XA. That is, the user H feeling sleepy can notice the coloring of the light emitting surface EP due to the illumination light Ly within the light emitting surface EP. As a result of repeated studies by the inventors of the present invention, it has been found that if humans can be aware of the color on the light emitting surface EP of the illumination device 20, that is, if humans can notice the color of the light emitting surface EP, it will greatly affect the psychological state of the person. It was able to bring about an influence and quickly guide the psychological state of the person in question to the target psychological state. Therefore, when the user H is in the first state, the user H strongly receives psychological effects caused by the color of the illumination light Ly. That is, in the illustrated example, it is possible to positively remove drowsiness from the user H who is feeling drowsiness.

On the other hand, as a result of repeated studies by the inventors of the present invention, not only the consciousness influence range XA on the light emitting surface EP where humans can be aware of color, but also the area on the light emitting surface EP other than the consciousness influence range XA, that is, the unconscious It was confirmed that the color of the light emitted from the area of influence YA can also affect the psychological state of a person. Light emitted from the unconscious influence range YA can also reach the eyes of the user H by reflection or the like. The user H is involuntarily affected by the color of the illumination light Ly that reaches the eye, and is led to a predetermined psychological state corresponding to the color of the illumination light. In particular, when the light-emitting region LZ on the light-emitting surface EP was set only within the unconscious influence range YA, it was extremely effective in continuously maintaining the target psychological state after it was obtained. In addition, when the illumination light is emitted only from the unconscious influence range YA, the human does not see the colored range on the light emitting surface EP. As a result, distractions can be effectively prevented. That is, in the illustrated example, it is possible to effectively and continuously prevent the user H who does not feel sleepy from becoming sleepy.

In the first example shown in FIGS. 8 and 9, the luminous area LZ also varies as the consciousness influence range XA varies between the user H's first state and second state. More precisely, the first state to the second state accompanies the change of the edge s1 on one side in the first direction d1 of the range of consciousness influence XA between the first state and the second state of the user H. The edge s1 on the other side in the first direction d1 of the range of conscious influence XA is fluctuating. As a result, the conscious influence range XA widens from the first state to the second state of the user H, while the light emitting region LZ narrows from the first state to the second state.

Note that, as shown in FIG. 9, the variation amount AC1 of one side s1 edge in the first direction d1 of the consciousness influence range XA between the first state and the second state of the user H changes from the first state to the second state. It is smaller than the variation amount AC2 of the edge s1 on the other side in the first direction d1 of the light emitting region LZ to state 2. As a result, the edge s1 on the other side in the first direction d1 of the light emitting region LZ, which was positioned within the range of influence of consciousness XA in the first state, is positioned outside the range of influence of consciousness XA in the first state.

By the way, if the amount of light emitted from the lighting device 20 is large, even if the light emission region LZ is set only within the unconscious influence range YA, the user H feels a color from the illumination light Ly, moves his face or line of sight, and emits light. Also, the surface EP is visually confirmed. Therefore, when the illuminance is measured on the table T in the space S, the illuminance due to the illumination light Ly from all the lighting devices 20, 21 to 24 installed in the space S is the illumination from the base lighting device 13. It is preferably lower than the illuminance caused by the light Lx, preferably 30% or less of the illuminance caused by the illumination light Lx from the base lighting device 13, and furthermore, the illumination light Lx from the base lighting device 13. It is more preferably 15% or less of the illuminance. Similarly, when the illuminance is measured at the position where the user H is scheduled to stay in the space S, the illumination light Ly from all the lighting devices 20, 21 to 24 installed in the space S The illuminance is preferably lower than the illuminance caused by the illumination light Lx from the base illumination device 13, preferably 30% or less of the illuminance caused by the illumination light Lx from the base illumination device 13, and furthermore, the base illumination More preferably, it is 15% or less of the illuminance caused by the illumination light Lx from the device 13 . In the illustrated example, the position where the user H is scheduled to stay in the space S is the face of the user H when the user H is seated on the first chair C1 or the second chair C2. can be exemplified. In addition, the illuminance due to the illumination light Ly from all the lighting devices 20, 21 to 24 installed in the space S turns off the lighting fixtures other than the lighting devices 20, 21 to 24, and the lighting devices 20, 21 to 24 are turned off. 24 is the luminance measured with only 24 lit. Similarly, the illuminance due to the illumination light Lx from the base lighting device 13 is luminance measured with lighting fixtures other than the base lighting device 13 turned off and only the base lighting device 13 turned on.

In addition, when the light-emitting surface EP of the lighting device 20 is reflected in the furniture or the like in the space S, even if the light-emitting region LZ is set only within the unconscious influence range YA, the user H cannot observe the reflected light-emitting region LZ. It is also conceivable to Therefore, the furniture arranged in the space S, typically the table T, preferably has a glossiness of 0 or more and 70 or less, more preferably 0 or more and 30 or less. preferable. Here, the glossiness is a value measured using a gloss meter VG7000 manufactured by Nippon Denshoku Industries in accordance with JISZ8741. By setting the glossiness in this way, it is possible to prevent the user H from being unintentionally aware of the color of the light emitting area LZ.

Here, FIG. 10 is a flow chart for explaining the operation of the lighting system 10 in the first example. An operation example of the lighting system 10 will be described with reference to FIG. 10 .

As described above, when the user H is staying in the space S, the control device 15 first controls the base lighting device 13 to emit the illumination light Lx. Next, as shown in FIG. 10, in step S1, it is determined whether or not the user H is in the first state. Specifically, based on the detection result of the detection sensor 18, it is determined whether or not the user H is in the first state. This determination is made by the calculation unit 15b of the control device 15 based on the detection result of the detection sensor 18 and the determination criterion information stored in the storage unit 15a of the control device 15, for example.

In the illustrated example, the user H normally sits on the first chair C1 or the second chair C2 and uses the table T to perform some work in the space S that constitutes the conference room. . Therefore, it is possible to determine whether or not the user H is in the first state of drowsiness by confirming the position of the user H's eyelids and the blinks of the user H seated in the first chair C1 or the second chair C2. can.

Next, in step S1, when it is determined that the user H is in the first state, the emission control unit 15c of the control device 15 supplies power to the light emitter 52 of the lighting device 20, The illumination light Ly is emitted from the first light emitting region LZ1 of the light emitting regions LZ. The illumination light Ly at this time is adjusted so as to have a color that produces a target psychological state. In the illustrated example in which the goal is to eliminate drowsiness, the light source 51 emits illumination light Ly of mauve or iris, for example.

After that, it is determined whether or not the user H is staying in the space S in step S3. Step S3 is executed after a predetermined time elapses after step S2 ends. Specifically, it is determined whether or not the user H is staying in the space S based on the detection result of the detection sensor 18 . This determination is made by the calculation unit 15b of the control device 15 based on the detection result of the detection sensor 18 and the determination criterion information stored in the storage unit 15a of the control device 15, for example. In the illustrated example, the user H normally sits on the first chair C1 or the second chair C2 and uses the table T to perform some work in the space S that constitutes the conference room. Therefore, the presence or absence of the user H can be determined by detecting the presence or absence of the user H seated on the first chair C1 or the second chair C2.

Next, when it is determined in step S3 that user H is staying in space S, the process proceeds to step S4. In step S4, it is determined again whether the user H is in the first state. If it is determined in step S4 that the user H is in the first state, for example, after a predetermined period of time has elapsed, step S3 is executed again to confirm the presence or absence of the user H.

On the other hand, if it is determined in steps S1 and S4 that the user H is not in the first state, the emission control unit 15c of the control device 15 adjusts the power supply to the light emitter 52 of the lighting device 20 in step S5. Then, the illumination light Ly is emitted from the second light emitting region LZ2 of the light emitting regions LZ of the lighting device 20. FIG. The illumination light Ly at this time is adjusted to a color that produces a target psychological state. In the illustrated example in which the aim is to eliminate drowsiness, as an example, similarly to the case where the illumination light Ly is emitted from the first light emitting region LZ1, the illumination light Ly of mauve or iris is emitted from the second light emitting region LZ2. do.

After that, it is determined whether or not the user H is staying in the space S in step S6. Step S6 is executed after a predetermined period of time has elapsed after step S5 is completed. If it is determined in step S6 that user H is staying in space S, the process proceeds to step S7. In step S7, it is determined again whether or not the user H is in the first state. If it is determined in step S7 that the user H is not in the first state, for example, after a predetermined period of time has elapsed, step S6 is executed again to check whether or not the user H exists. When it is determined in step S7 that user H is in the first state, step S2 is executed in the same manner as when it is determined in step S1 that user H is in the first state. As a result, the light-emitting region LZ on the light-emitting surface EP is switched from the second light-emitting region LZ2 to the first light-emitting region LZ1.

On the other hand, when it is determined in steps S3 and S6 that the user H is not in the space S, in step S8, emission of the illumination light Ly from the light emitting surface EP of the illumination device 20 is stopped. Specifically, the emission control unit 15 c of the control device 15 stops power supply to the light emitter 52 of the lighting device 20 .

According to the first example described above, the light emitting area LZ emitting light on the light emitting surface EP changes according to the state of the space user H. FIG. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. Therefore, an appropriate psychological effect can be exerted on the space user H according to the user H's condition. Thereby, for example, the working efficiency of the user H within the space S can be improved.

In the above description, an example in which the detection sensor 18 detects the sleepy first state was shown, but the present invention is not limited to this. The detection sensor 18 may detect the second non-drowsy state instead of or in addition to the first drowsy state.

Also, in the above description, the user H of the space S is an example of sitting on the first chair C1 alone. Then, the light emitting area LZ on the light emitting surface EP of the first lighting device 21 in which the consciousness influence range XA of the user H seated on the first chair C1 is widened is changed according to the state of the user H. In this example, the light emitting areas LZ on the light emitting surfaces EP of the second to fourth lighting devices 22 to 24 may be changed according to the state of the user H, or may be changed according to the state of the user H. Alternatively, the second to fourth lighting devices 22 to 24 may be turned off. However, if at least a part of the light emitting surface EP of the second to fourth illumination devices 22 to 24 is located in the consciousness influence range XA, the second to fourth illumination devices can be used in the same manner as the first illumination device 21 described above. It is preferable to change the luminous area LZ of the devices 22-24 with respect to the conscious influence area XA and the unconscious influence area YA. It should be noted that the handling of the second to fourth lighting devices 22 to 24 can be the same as in the first example in other examples described later.

(Second example)
Next, a second example will be described with reference to FIGS. 11 and 12. FIG. The second example is different from the first example mainly in the state of the user H to be detected, the psychological state that the user aims to induce, and the light emitting area LZ in each state. It can be the same as the first example. Differences from the first example will be mainly described below.

In the second example shown in FIGS. 11 and 12, the detection sensor 18 can detect the concentrated state as the first state. For example, the detection sensor 18 can detect whether or not the user H is concentrating by observing the movement of the face such as the eyelids, the direction of the line of sight, and the like. The illumination device 20 emits illumination light Ly having a color that induces a target psychological state from the light emitting surface EP. In this example, the illumination device 20 emits skin-colored illumination light Ly for the purpose of continuing concentration when the user is concentrating, and for the purpose of encouraging concentration when the user is not concentrating. adjust the output of the body 52;

Also in the second example, the control device 15 emits the illumination light Ly from the first light emitting region LZ1 when the user H is in the first state as shown in FIG. is in the second state, the illumination light Ly is emitted from the second light emitting region LZ2. As shown in FIGS. 11 and 12, the length of the first light emitting region LZ1 along the first direction d1 is longer than the length of the second light emitting region LZ2 along the first direction d1. That is, in the second example, the first light emitting region LZ1 is wider than the second light emitting region LZ2.

As shown in FIGS. 11 and 12, the consciousness influence range XA of the user H in the concentrated first state and the consciousness influence range XA in the second state in the normal state or in the distracted state are different. there is According to experiments conducted by the inventors of the present invention, the consciousness influence range XA in the first state, which is the concentration state, is a range that can be expected at an elevation angle of 10° or less and a depression angle of 10° or less with respect to the horizontal direction from the position of the user's eyes. Could be considered to be located inside. In addition, the consciousness influence range XA in the second state, which is the normal state or the distracted state, is considered to be located within a range that can be expected at an elevation angle of 30° or less and a depression angle of 30° or less with respect to the horizontal direction from the position of the user's eyes. was made.

As shown in FIG. 11, in the concentrated first state, the light emission region LZ does not extend into the range of conscious influence XA, and is located only within the range of unconscious influence YA. That is, the user H who is in a concentrated state does not notice the coloring caused by the illumination light Ly within the light emitting surface EP. Therefore, the user H does not see the colored range on the light emitting surface EP, and it is possible to effectively prevent the user from being distracted.

On the other hand, the user H is involuntarily affected by the color of the illumination light Ly reaching his/her eyes, and is led to a predetermined psychological state corresponding to the color of the illumination light Ly. In particular, since the light-emitting area LZ on the light-emitting surface EP is only within the unconscious influence range YA, it is extremely effective in continuously maintaining the target mental state after obtaining it. That is, in the illustrated example, the concentrated user H can effectively continue to maintain a concentrated state.

As shown in FIG. 12, in the normal state or the scattered second state, the light emission region LZ extends into the consciousness influence range XA. At this time, the user H can notice the coloring caused by the illumination light Ly within the light emitting surface EP. Therefore, when the user H is in the second state, the user H strongly receives psychological effects caused by the color of the illumination light Ly. That is, in the illustrated example, user H is effectively led to a state of concentration.

In the second example shown in FIGS. 11 and 12, as in the first example, the consciousness influence range XA expands from the first state to the second state of the user H, while the The light emitting region LZ becomes narrower. However, unlike the first example, the amount of change in the light emitting region LZ is small in the second example. As shown in FIG. 12, the fluctuation amount AC1 of one side s1 edge in the first direction d1 of the consciousness influence range XA between the first state and the second state of the user H is changed from the first state to the second state. It is larger than the variation amount AC2 of the other side s1 edge in the first direction d1 of the light emitting region LZ. As a result, the edge s1 on the other side in the first direction d1 of the light emitting region LZ, which was positioned outside the range of influence of consciousness XA in the first state, is positioned within the range of influence of consciousness XA in the second state.

According to the second example described above, the light-emitting region LZ emitting light on the light-emitting surface EP changes according to the state of the space user H. FIG. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. Therefore, it is possible to exert an appropriate psychological effect on the space user according to the user's condition. Thereby, for example, the working efficiency of the user H within the space S can be improved.

In addition, in the above description, an example of detecting the first state in which the detection sensor 18 is in the concentration state is shown, but the present invention is not limited to this. The detection sensor 18 may detect the second state of the normal state or the distracted state instead of the first state of the focused state or in addition to the first state of the focused state.

Also, the detailed operation and lighting method of the illumination system 10 can be the same as the operation and method detailed with reference to FIG. 10 in the first example.

(Third example)
Next, a third example will be described with reference to FIGS. 13 and 14. FIG. The third example mainly differs from the first and second examples in that the state of the user H to be detected, the target psychological state to be caused in the user, and the light emitting region LZ in each state are different from the first and second examples. , can be the same as the first example or the second example. Differences from the first and second examples will be mainly described below.

In a third example shown in FIGS. 13 and 14, the detection sensor 18 can detect an alert or tense state as the second state. For example, the detection sensor 18 can detect whether the user H is cautious or tense by observing the movement of the face, the direction of the line of sight, and the like. The illumination device 20 emits illumination light Ly having a color that induces a target psychological state from the light emitting surface EP. In this example, the lighting device 20 is used for the purpose of releasing from alertness or tension and relaxing when alerted or tense, and for the purpose of maintaining a relaxed state when not alerted or tense. The output of each light emitter 52 is adjusted so as to emit lemon-colored illumination light Ly.

Also in the third example, the control device 15 emits the illumination light Ly from the first light emitting region LZ1 when the user H is in the first state as shown in FIG. is in the second state, the illumination light Ly is emitted from the second light emitting region LZ2. As shown in FIGS. 13 and 14, the length of the first light emitting region LZ1 along the first direction d1 is shorter than the length of the second light emitting region LZ2 along the first direction d1. That is, in the third example, the first light emitting region LZ1 is narrower than the second light emitting region LZ2.

As shown in FIGS. 13 and 14, the consciousness influence range XA of the user H in the relaxed first state is different from the consciousness influence range XA in the alert or tense second state. According to experiments conducted by the inventors of the present invention, the consciousness influence range XA in the relaxed first state is within a range expected at an elevation angle of 30° or less and a depression angle of 30° or less with respect to the horizontal direction from the position of the user's eyes. Could be located and considered. In addition, it was possible to think that the consciousness influence range XA in the alert or tense second state is located within the range expected at an elevation angle of 40 ° or less and a depression angle of 40 ° or less with respect to the horizontal direction from the position of the user's eyes. .

As shown in FIG. 13, in the relaxed first state, the light emission region LZ does not extend into the range of conscious influence XA, but is located only within the range of unconscious influence YA. That is, the user H who is in a relaxed state does not notice the coloring caused by the illumination light Ly within the light emitting surface EP. Therefore, the user H does not see the colored range on the light emitting surface EP, and it is possible to effectively prevent the user from being distracted.

On the other hand, the user H is involuntarily affected by the color of the illumination light Ly reaching his eyes, and is led to a predetermined psychological state corresponding to the color of the illumination light. In particular, since the light-emitting area LZ on the light-emitting surface EP is only within the unconscious influence range YA, it is extremely effective in continuously maintaining the target mental state after obtaining it. That is, in the illustrated example, the relaxed user H can effectively continue to maintain a relaxed state.

As shown in FIG. 14, in the alert or tense second state, the light emission region LZ extends into the consciousness influence range XA. At this time, the user H can notice the coloring of the light emitting surface EP caused by the illumination light Ly within the light emitting surface EP. Therefore, when the user H is in the second state, the user H strongly receives psychological effects caused by the color of the illumination light Ly.
In other words, in the illustrated example, the user H is effectively guided to a relaxed state freed from vigilance and tension.

In the third example shown in FIGS. 13 and 14, unlike the first and second examples, the consciousness influence range XA expands from the first state to the second state of the user H, while the In the second state, the light emitting region LZ is not narrowed, but rather widened. Also, in the third example, the amount of change in the light emitting region LZ is very small. In the third example, the edge s1 on the other side in the first direction d1 of the light emitting region LZ, which was positioned outside the range of influence of consciousness XA in the first state, is now positioned within the range of influence of consciousness XA in the second state.

According to the third example described above, the light emitting area LZ emitting light on the light emitting surface EP changes according to the state of the space user H. FIG. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. Therefore, it is possible to exert an appropriate psychological effect on the space user according to the user's condition. Thereby, for example, the working efficiency of the user H within the space S can be improved.

In addition, in the above description, an example in which the detection sensor 18 detects the alert or tense second state is shown, but the present invention is not limited to this. The detection sensor 18 may be capable of detecting the relaxed first state instead of or in addition to the alert or tense second state.

Further, regarding the detailed operation and lighting method of the lighting system 10 in the third example, steps S1, S4 and S7 are changed to steps for determining whether or not the user H of the space S is in the second state. Thus, the operations and methods detailed with reference to FIG. 10 in the first example can be employed.

(Fourth example)
Next, a fourth example will be described with reference to FIGS. 8 and 15. FIG. The fourth example is different from the first example in that even in the second state in which drowsiness does not occur, the light emitting region LZ extends to the consciousness influence range XA as in the first state. can be similar to Therefore, in the fourth example, in the first state in which drowsiness occurs, as shown in FIG. 8, the light emission region LZ extends into the consciousness influence range XA.

That is, in the fourth example, the control device 15 controls that at least part of the first light emitting area LZ1 emitting light in the light emitting surface EP is in the first state when the user H is in the first state. When the user H is within the consciousness influence range XA where the user H can be aware of the color on the light emitting surface EP, and the user H is in the second state, at least the second light emitting area LZ2 emitting light on the light emitting surface EP The lighting device 20 is controlled so that a part of it falls within the unconscious influence range YA where the user H in the second state can be aware of the color on the light emitting surface EP. Therefore, when the user H is in the first state, at least a part of the light emitting region LZ of the light emitting surface EP is included in the consciousness influence range XA, so that the target psychological state corresponding to the emitted light color can be rapidly adjusted. possible to cause. Similarly, when the user H is in the second state, at least a part of the light emitting region LZ of the light emitting surface EP is included in the consciousness influence range XA, so that the target psychological state corresponding to the color of the emitted light can be achieved. It can be triggered quickly. According to this specific example, the light emitting region LZ can be appropriately changed according to the state of the user, thereby effectively influencing the state of mind of the user H. FIG.

(Fifth example)
Next, a fifth example will be described with reference to FIGS. 9 and 16. FIG. The fifth example is different from the first example in that even in the first state in which drowsiness occurs, the light emitting region LZ extends only within the unconscious influence range YA as in the second state. It can be similar to the example. Therefore, in the fifth example, in the second state in which drowsiness does not occur, as shown in FIG. 16, the light emitting region LZ extends only within the unconscious influence range YA.

That is, in the fourth example, the control device 15 causes the first light emitting area LZ1 of the light emitting surface EP, which emits light when the user H is in the first state, to emit light when the user H is in the first state. When the user H is in the second state, the second light-emitting region LZ2 emitting light in the light-emitting surface EP is outside the consciousness influence range XA in which the user can be aware of the color on the surface EP. The illumination device 20 is controlled so that it is outside the conscious influence range XA in which a certain user H can be conscious of the color on the light emitting surface EP. Therefore, when the user H is in the first state, by setting the light emitting region LZ of the light emitting surface EP within the unconscious influence range YA, the target psychological state corresponding to the emitted light color can be maintained for a long period of time. becomes possible. Similarly, even when the user H is in the second state, by setting the light-emitting area LZ of the light-emitting surface EP within the unconscious influence range YA, the target psychological state corresponding to the emitted light color can be maintained for a long period of time. can be maintained. According to this specific example, it is possible to appropriately change the light emitting region LZ according to the state of the user H, thereby effectively influencing the psychological state of the user H. FIG.

(6th example)
Next, a sixth example will be described. In the first to fifth examples described above, the example in which the light emitting region LZ is adjusted based on the state of mind of the user H has been shown. In the sixth example, the detection sensor 18 detects the working state of the user H instead of the psychological state of the user H, and the control device 15 detects the size of the light emitting area LZ according to the working state of the user H. may be changed.

As a specific example, the first state can be a state in which the user H is working on a computer or the like, and the second state can be a state in which the user H is having a meeting. The consciousness influence range XA of user H who is doing desk work on a computer, etc., can be considered to be located within a range that can be expected at an elevation angle of 10° or less and a depression angle of 10° or less with respect to the horizontal direction from the eye position of user H. can. In addition, it can be considered that the consciousness influence range XA of the user H who is having a meeting is located within a range that can be expected from the eye position of the user H with an elevation angle of 30° or less and a depression angle of 30° or less with respect to the horizontal direction. .

As an example, the first light emitting region LZ1 in the first state and the second light emitting region LZ2 in the second state can be set similarly to the fifth example. That is, the first light emitting region LZ1 is located only within the unconscious influence range YA of the user H in the first state, and the second light emitting region LZ2 is located only within the unconscious influence range YA of the user H in the second state. may be located at

In this specific example, the color of the illumination light Ly emitted from the first light emitting region LZ1 may be skin color as in the second example to encourage the user H who is doing deskwork to concentrate. The color of the illumination light Ly emitted from the first light emitting region LZ1 may be skin color as in the second example to encourage the user H who is doing desk work to concentrate. Further, the color of the illumination light Ly emitted from the second light emitting area LZ2 may be bright green or reddish purple to bring "vigor" and "aggressiveness" to the user H during the meeting. That is, between the first state and the second state, the light emitting region LZ is changed and the color of the illumination light Ly is also changed so that the psychological state caused by the user H is different between the first state and the second state. ing. By changing the color of the illumination light Ly between the first state and the second state, it is possible to induce an appropriate psychological state according to the working state of the user.

According to the sixth example described above, the light emitting region LZ emitting light on the light emitting surface EP changes according to the state of the space user H. FIG. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. Further, according to the sixth example, the color of the illumination light Ly emitted from the light emitting area LZ also changes according to the state of the user H of the space. Therefore, it is possible to exert an appropriate psychological effect on the space user according to the user's condition. Thereby, for example, the working efficiency of the user H within the space S can be improved.

In the embodiment described above, the lighting system 10 includes the lighting device 20 that has the light emitting surface EP and emits light into the space S, and the control device 15 that controls the lighting device 20 . The control device 15 controls the first light-emitting region LZ1 emitting light in the light-emitting surface EP when the user H of the space S is in the first state, and the light-emitting surface EP when the user H is in the second state. The lighting device 20 is controlled so as to be different from the second light emitting region LZ2 emitting light. According to the present embodiment as described above, the light emitting area LZ emitting light on the light emitting surface EP changes according to the psychological state and work state of the space user H. FIG. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. That is, depending on whether the space user H is in the first state or the second state, it is possible to change the way in which the psychological state is affected.
Therefore, an appropriate psychological effect can be exerted on the space user H according to the user's condition. Since the psychological state of the space user H can be effectively influenced in this way, the working efficiency of the user H in the space S can be improved, for example.

In the first to third examples of the embodiment described above, the control device 15 controls the light emitting surface EP when the user H is in either the first state or the second state. When the light emitting region LZ emitting light is outside the consciousness influence range XA of the user H who is in one state, and the user H is in either the first state or the second state, the light emitting surface The lighting device 20 is controlled such that at least a part of the light-emitting light-emitting area LZ of the EP is within the consciousness influence range XA of the user H in the other state. Therefore, when the user H is in one of the states, the target psychological state corresponding to the emitted light color can be maintained for a long period of time by setting the light emitting area LZ of the light emitting surface EP within the unconscious influence range YA. becomes possible. On the other hand, when the user H is in the other state, at least a part of the light emitting area LZ of the light emitting surface EP is included in the consciousness influence range XA, so that the target psychological state corresponding to the color of the emitted light can be rapidly adjusted. possible to cause. According to this specific example, it is possible to appropriately change the light emitting region LZ according to the state of the user H, thereby effectively influencing the psychological state of the user H. FIG.

In the first to sixth examples of the embodiment described above, the consciousness influence range XA of the user H in the first state is different from the consciousness influence range XA of the user H in the second state. Thus, the size of the consciousness influence range XA in which the space user H can perceive the color on the light emitting surface EP is likely to change according to the state of the user H. In the specific example described above, the size of the light emitting region LZ can be adjusted in accordance with the change in the size of the range of influence of consciousness XA. As a result, it is possible to effectively affect the mental state of the user H without depending on the change in the state of the user H of the space.

In the first and second examples of the embodiment described above, the consciousness influence range XA of the user H in the first state is narrower than the consciousness influence range XA of the user H in the second state. Reference numeral 15 denotes a first light emitting area LZ1 of the light emitting surface EP that emits light when the user H is in the first state, and a first light emitting area LZ1 of the light emitting surface EP that emits light when the user H is in the second state. The illumination device 20 is controlled so as to be wider than the second light emitting region LZ2. According to this specific example, it is possible to appropriately adjust the size of the light emitting region LZ as the size of the range of influence of consciousness XA changes. For example, the second light emitting region LZ2 in the second state can be set only within the range of unconscious influence YA, and at least part of the first light emitting region LZ1 in the first state can be positioned within the range of unconscious influence XA. Also, the first light emitting region LZ1 in the first state can be set only within the range of unconscious influence YA, and at least a part of the second light emitting region LZ2 in the second state can be positioned within the range of unconscious influence XA. As a result, it is possible to effectively affect the mental state of the user H without depending on the change in the state of the user H of the space.

In the first example of the above-described embodiment, the control device 15 sets the light-emitting second light-emitting region LZ2 of the light-emitting surface EP to the second state when the user H is in the second state. When the user H is outside the awareness influence range XA in which the user H can be conscious of the color on the light emitting surface EP, and the user H is in the first state, the first light emitting area LZ1 emitting light in the light emitting surface EP The illumination device 20 is controlled such that at least a portion thereof is within a range in which the user H in the first state can perceive the color on the light emitting surface EP. As an example, in the first state in which drowsiness occurs, by making the user aware of the mauve or iris color of the first light emitting region LZ1, it is possible to quickly remove drowsiness. In addition, in the second state, which is the normal state in which drowsiness is removed, the user unconsciously becomes drowsy from light emitted from the second light emitting region LZ2 within the unconscious influence range YA. The effect that does not cause drowsiness is continuously exerted, and the state in which drowsiness is removed is maintained. According to this example, the user H can work in the space S with high productivity. Note that the consciousness influence range XA in the first state in which drowsiness occurs can be considered to be located within a range that can be seen from the eye position of the user H at an elevation angle of 10° or less and a depression angle of 10° or less. Similarly, the consciousness influence range XA in the second state, which is the normal state in which drowsiness is eliminated, can be considered to be located within a range that can be seen from the eye position of the user H at an elevation angle of 30° or less and a depression angle of 30° or less. can. As a result of repeated experiments, it was confirmed that the effect of improving the productivity in the space S can be effectively obtained by setting the consciousness influence range XA in this way.

In the second example of the embodiment described above, the control device 15 controls the first light emitting region LZ1 emitting light in the light emitting surface EP to be in the first state of mind when the user H is in the first state. When a certain user H is outside the consciousness influence range XA in which the user H can be aware of the color on the light emitting surface EP and the user H is in the second state, at least part of the light emitting area of the light emitting surface EP is within the consciousness influence range XA where the user H in the second state can be aware of the color on the light emitting surface EP. As an example, in a first state in which the user H is in a concentrated state, light such as skin color is emitted from the light emitting area LZ within the unconscious influence range YA so as not to distract the user H. to inject. As a result, the user H is continuously encouraged to concentrate unconsciously, and is maintained in a concentrated state. In addition, in the second state, which is a distracted state due to lack of concentration or a normal state, by making the user aware of the skin color of the light emitting area LZ located within the consciousness influence range XA, the user is quickly guided to a concentrated state. It becomes possible to According to this example, the user H can work in the space S with high productivity. Note that the consciousness influence range XA in the first state in which the user is concentrating can be considered to be located within a range that can be seen from the eye position of the user H at an elevation angle of 10° or less and a depression angle of 10° or less.
Similarly, it is assumed that the consciousness influence range XA in the second state, which is the distracted state due to lack of concentration or the normal state, is located within a range that can be seen from the eye position of the user H at an elevation angle of 30° or less and a depression angle of 30° or less. can think. As a result of extensive experiments, it has been confirmed that setting the consciousness influence range XA in this way effectively improves the productivity in the space S.

In the third example of the embodiment described above, the consciousness influence range XA of the user H in the first state is narrower than the consciousness influence range XA of the user H in the second state. When the user H is in the second state, the second light emitting area LZ2 of the light emitting surface EP emits light, and when the user H is in the first state, the first light emitting area LZ2 of the light emitting surface EP emits light. The illumination device 20 is controlled so as to be wider than the light emitting area LZ1. According to this specific example, it is possible to appropriately adjust the size of the light emitting region LZ as the size of the range of influence of consciousness XA changes.
For example, the first light emitting region LZ1 in the first state can be set only within the unconscious influence range YA, and at least a part of the second light emitting region LZ2 in the second state can be positioned within the consciousness influence range XA. As a result, it is possible to effectively affect the mental state of the user H without depending on the change in the state of the user H of the space.

In the third example of the embodiment described above, the control device 15 controls the light emitting area LZ, which emits light in the light emitting surface EP, when the user H is in the first state. When the user H is in the second state, at least a part of the light-emitting area of the light emitting surface EP is outside the consciousness influence range XA of the user H who is in the second state. The lighting device 20 is controlled so as to be inside. As an example, in the first state in which the user H is in a relaxed state, the light emitting area LZ, which is within the unconscious influence range YA, is displayed in a lemon color or the like to encourage the continuation of relaxation so as not to make the user H wary or tense. of light. As a result, the user H is kept in a relaxed state by being continuously worked on unconsciously. In addition, in the second state in which the user is unable to relax and is in a wary or tense state, by making the user aware of the lemon color or the like of the light emitting area LZ located within the consciousness influence range XA, the user is quickly brought to a relaxed state. can be induced to According to this example, the user H can spend comfortably in the space S. Note that the consciousness influence range XA in the first state, which is the relaxed state, can be considered to be located within a range that can be seen from the eye position of the user H at an elevation angle of 30° or less and a depression angle of 30° or less. Similarly, the consciousness influence range XA in the second state in which the user cannot relax and is in a wary or tense state is located within a range that can be seen from the eye position of the user H at an elevation angle of 40° or less and a depression angle of 40° or less. Then you can think.
As a result of extensive experiments, it was confirmed that setting the range of influence of consciousness XA in this way effectively improves comfort in the space S.

In one specific example of the embodiment described above, the lighting system 10 further has a detection sensor 18 that detects the state of the user H, and the control device 15 controls the lighting device based on the detection result of the detection sensor 18. 20. By using the detection sensor 18 that detects the state of the user H, it is possible to quickly respond to changes in the state of the user H and adjust the light emitting region LZ.

In one specific example of the embodiment described above, the detection sensor 18 detects at least one of the blinking motion of the user H, the number of blinks, the state of the pupil, the direction of the line of sight, and the motion of the face. By using such detection results of the detection sensor 18, the state of the user H can be appropriately detected.

In one specific example of one embodiment described above, the detection sensor 18 has an imaging device that images the user H. FIG. Such a detection sensor 18 is simple and inexpensive. Also, application to the existing lighting device 20 is possible.

In the sixth example of the embodiment described above, the control device 15 changes the color of light emitted from the light-emitting surface EP when the user H in the space S is in the first state to The illuminating device 20 is controlled so as to differ from the luminous color of the luminous surface EP. By controlling the emitted light color, it is possible to appropriately change the psychological state of the space user H to be guided. Therefore, it is possible to make the lighting more appropriate according to the state of the user H, and thereby to influence the mental state of the user H more effectively.

In one specific example of one embodiment described above, the light emitting surface EP is provided on the wall W that partitions the space S. As shown in FIG. The consciousness influence range XA of the user H of the space S extends over the wall W in many cases. Therefore, by changing the light-emitting region LZ of the light-emitting surface EP provided on the wall W, the lighting can be made more appropriate according to the state of the user H. As a result, the psychological state of the user H can be effectively influenced.

In one specific example of the above-described embodiment, the amount of light emitted from a region of a certain area of the light emitting surface EP is more It is smaller than the amount of light emitted from a region of a certain area. Furthermore, the amount of light emitted from an arbitrarily selected fixed-area region of the light-emitting surface EP is equal to the amount of light emitted from other fixed-area regions of the light-emitting surface EP that are closer to the ceiling CE that defines the space S than that region. The following may be used.
According to these specific examples, in addition to being able to adjust the size of the light emitting region LZ of the illumination device 20, the amount of emitted light within the light emitting region LZ can be adjusted. Therefore, it is possible to effectively influence the psychological state of the user. In addition, from the viewpoint of effective use of illumination light, it is preferable that the light-emitting surface EP of the illumination device 20 be close to the ceiling CE of the wall W. FIG. In this case, the area of the light emitting surface EP that is distant from the ceiling CE is likely to be within the conscious influence range XA, and the area of the light emitting surface EP that is close to the ceiling CE is likely to be within the unconscious influence range YA.
According to the distribution of the emitted light amount in the specific example described above, the emitted light amount from the conscious influence area XA can be made smaller than the emitted light amount from the unconscious influence area YA. As a result, it is possible to effectively prevent the light from the consciousness influence range XA from exerting an excessive influence on the psychological state of the space user H. In addition, the light from the unconscious influence range YA can effectively affect the psychological state of the space user H.

In one specific example of the above-described embodiment, the amount of light emitted from a region of a certain area located within the consciousness influence range XA where the user H can be aware of the color on the light emitting surface EP is determined by the user H as follows: It is preferable that the amount of emitted light is smaller than the amount of emitted light from a certain area located outside the conscious influence range XA where the color on the light emitting surface EP can be perceived. That is, the amount of light emitted from the conscious area of influence XA can be made smaller than the amount of emitted light from the unconscious area of influence YA. As a result, it is possible to effectively prevent the light from the consciousness influence range XA from exerting an excessive influence on the psychological state of the space user H. In addition, the light from the unconscious influence range YA can effectively affect the psychological state of the user of the space S.

In one specific example of the embodiment described above, the lighting system 10 further comprises a base lighting device 13 provided on the ceiling CE that defines the space S. Since the base lighting device 13 is provided separately, the position and size of the light emitting surface EP of the lighting device 20 can be appropriately set in consideration of the influence on the psychological state of the space user H. As a result, the psychological state of the user H can be effectively influenced.

In the above-described embodiment, the lighting method for illuminating the space S using the lighting device 20 having the light emitting surface EP is to light the light emitting surface EP when the user H of the space S is in the first state. and performing illumination by causing the light emitting surface EP to emit light when the user H of the space S is in the second state. A light emitting region LZ1 of the light emitting surface EP that emits light when the user H is in the first state, and a second light emitting region LZ1 of the light emitting surface EP that emits light when the user H is in the second state. are different from the area LZ2. According to the present embodiment as described above, the light-emitting region LZ emitting light on the light-emitting surface EP changes according to the state of mind and the state of operation of the user H of the space. Depending on the size of the light emitting area LZ, the manner in which the mental state of the space user H is affected changes. Therefore, depending on whether the space user H is in the first state or the second state, it is possible to change the manner in which the state of mind is affected. That is, it is possible to exert an appropriate psychological effect on the space user according to the state of the user H. Since the psychological state of the space user H can be effectively influenced in this way, the working efficiency of the user H in the space S can be improved, for example.

In one embodiment described above, the lighting system 10 includes the lighting device 20 having the light emitting surface EP and emitting light into the space S, and the control device 15 controlling the lighting device 20 . When the user H is in either one of the first state and the second state, the control device 15 controls the light-emitting area LZ in the light-emitting surface EP to be in one of the states. At least a part of the light emitting region LZ emitting light in the light emitting surface EP when the user H is in the other state of the first state and the second state is outside the consciousness influence range XA of the user. , the lighting device 20 is controlled so as to be within the consciousness influence range XA of the user H in the other state. According to this embodiment, when the user H is in one of the states, the luminous area LZ of the luminous surface EP is set within the unconscious influence range YA. It is possible to maintain the condition for a long period of time. On the other hand, when the user H is in the other state, at least a part of the light emitting area LZ of the light emitting surface EP is included in the consciousness influence range XA, so that the target psychological state corresponding to the color of the emitted light can be rapidly adjusted. possible to cause. Therefore, it is possible to appropriately change the light emitting area according to the state of the user H, thereby effectively influencing the psychological state of the user H. FIG. In addition, in such a lighting device 20, the light emitting region LZ may be the same without changing between the first state and the second state.

Although an embodiment has been described through several specific examples, these specific examples are not intended to limit an embodiment. The embodiment described above can be implemented in various other specific examples, and various omissions, replacements, and modifications can be made without departing from the spirit of the embodiment.

An example of modification will be described below with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding portions in the above-described specific example are used for the portions that can be configured in the same manner as in the above-described specific example, and redundant description is given. omitted.

In the specific example of implementation described above, an example was shown in which the lighting method by the lighting device 20 is changed according to whether the user H is in the first state or the second state, but the present invention is limited to this example. Absent. For example, the lighting method by the lighting device 20 may be changed according to which of three or more states the user H is in.

Further, in the above-described specific example, the illumination device 20 includes the edge light type surface light source device 50, but the present invention is not limited to this example. For example, the direct type surface light source device 50 may be incorporated into the illumination device 20 . A surface light source device 50 shown in FIG. 17 has a light diffusion sheet 56 , a reflection sheet 57 and an optical sheet 58 as optical members 55 . The optical sheet 58 is arranged between the light diffusion sheet 56 and the reflection sheet 57 . The light source 51 is arranged between the reflective sheet 57 and the optical sheet 58 . The light source 51 includes a plurality of light emitters 52 arranged in both the first direction d1 and the second direction d2. The optical sheet 58 has, for example, a function of adjusting the illuminance distribution resulting from the arrangement of the plurality of light emitters 52, for example, a function of equalizing. In the example shown in FIG. 17, the optical sheet 58 is composed of a prism sheet having prisms protruding toward the light diffusion sheet 56 side. In the surface light source device 50 of FIG. 17, the light diffusion sheet 56 forms the light exit surface 50a and emits planar light that planarly illuminates the first region Z1 of the decorative sheet 40 that forms the light emitting surface EP. can do. In the example shown in FIG. 17, by adjusting the output of each light emitter 52, it is possible to adjust the position and size of the light emitting region LZ within the light emitting surface EP of the illumination device 20 overlapping the light exit surface 50a. can. In addition, by adjusting the output of each light emitter 52, it is possible to control the distribution of the amount of light emitted from a certain area within the light emitting region LZ. Furthermore, when the light source 51 includes light emitters 52 having different wavelength ranges, the color of the illumination light Ly emitted from the light emitting region LZ can be controlled by adjusting the output of each light emitter 52 .

Further, as the surface light source device 50, it is also possible to use a light emitting sheet such as an EL (Electro Luminescence) sheet, a surface light emitter, or a sheet light source.

Furthermore, as another example of the lighting device, lighting device 20 may include decorative sheet 40 and light source 51 for irradiating light onto decorative sheet 40, as shown in FIG. In the example shown in FIG. 18, the decorative sheet 40 is provided on the wall body WB. The light source 51 is arranged in a recess formed in the ceiling CE. The illumination light Ly can be supplied to the space S by reflection on the decorative sheet 40 . That is, in the example shown in FIG. 18, the light-emitting surface EP is an area of the surface of the decorative sheet 40 that can be irradiated with light from the light source 51 . In the example shown in FIG. 18, by adjusting the light distribution characteristics of the light emitted from the light source 51, more specifically, the luminous intensity angular distribution, the position and size of the light emitting region LZ, It is possible to adjust the distribution of the amount of light emitted from a region of constant area. Moreover, it is preferable that the light source 51 can emit light in different wavelength ranges so that the color of the illumination light Ly can be switched.

As another modification, as shown in FIG. 19, the decorative sheet 40 may be arranged facing two or more surfaces of the surface light source device 50 . In the example shown in FIG. 19, the surface light source device 50 has a pair of main surfaces 50b and a side surface 50c located between the pair of main surfaces 50b. One principal surface 50b includes a light exit surface 50a. In the illustrated example, the decorative sheet 40 faces one main surface 50b including the light exit surface 50a and a side surface 50c adjacent to this main surface 50b. More precisely, the decorative sheet 40 shown in FIG. 19 covers one main surface 50b including the light exit surface 50a and four side surfaces 50c adjacent to this main surface 50b. In the example shown in FIG. 19, the illumination device 20 including the decorative sheet 40 and the surface light source device 50 is treated as one member, for example, as a light-emitting panel material, and attached to the wall body WB as a structural body. A panel member 70 including the board 30 and the decorative sheet 40 covering one main surface and side surface of the board 30 is attached to the wall body WB as a structure together with the lighting device 20 . The illumination device 20 shown in FIG. 19 can be installed in areas of various sizes and shapes by combining with the panel member 70 whose shape and size are adjusted.

20 shows an exploded perspective view of the illumination device 20 of FIG. 19. As shown in FIG. In the example shown in FIG. 20, the illumination device 20 will have a flattened rectangular parallelepiped shape. The illumination device 20 has a region 40a corresponding to one main surface 50b of the surface light source device 50 and four regions 40b corresponding to the four side surfaces 50c of the surface light source device 50, respectively. A portion of the area 40a of the decorative sheet 40 that faces the light exit surface 50a forms a first area Z1 that serves as the light emitting surface EP, and the light exit surface 50a of the area 40a of the decorative sheet 40 forms a first area Z1. The area 40b of the decorative sheet 40 and the part that does not face to form the second area Z2.

The surface light source device 50 has a reflection sheet 57 , a light guide plate 60 , an adjustment sheet 59 and a light diffusion sheet 56 . A light emitter 52 is provided facing the light guide plate 60 from the first side s1 in the first direction d1. The adjustment sheet 59 includes a transparent base material 59a having visible light transmittance, and a light absorbing portion 59b provided on the base material 59a. The light absorbing portion 59b contains, for example, a visible light absorbing pigment, and has a visible light absorbing function. As an example, the light absorbing portion 59b contains carbon black or titanium black.

The adjustment sheet 59 is a layer for reducing the amount of light emitted from the decorative sheet 40 at a position close to the second area Z2 located on the second side s2 in the first direction d1. Further, the light absorbing power in each region of the adjustment sheet 59 is not uniform and varies. For example, the light absorption capacity of a certain region of the adjustment sheet 59 is compared with that of another region of the adjustment sheet 59 located on the first side s1 in the first direction d1 and closer to the light emitter 52 than that region. By making it stronger than the light absorption ability, it is possible to reduce the amount of light emitted from the region located on the second side s2 in the first direction d1 and close to the second region Z2. Furthermore, the light absorption capacity of the adjustment sheet 59 in the arbitrarily selected region is made equal to or higher than the light absorption capacity of the adjustment sheet 59 in other regions located on the first side s1 in the first direction d1 from the region. This makes it possible to reduce the amount of emitted light as it approaches the second region Z2 located on the second side s2 in the first direction d1. In addition, the visible light absorption ability can be adjusted by the content density of the pigment, the arrangement density of the light absorbing portions 59b, the thickness of the light absorbing portions 59b, and the like. This adjustment sheet 59 can also be applied to other examples of the surface light source device 50 described above.

As a modification related to FIGS. 19 and 20, the lighting device 20 in the modification shown in FIGS. It has a frame 34 . The support frame 34 reinforces the surface light source device 50 and facilitates installation of the surface light source device 50 on the outside of the wall W or the like. The decorative sheet 40 may be directly joined to the surface light source device 50 or may be joined to the support frame 34 so as to face the surface light source device 50 . In the example shown in FIG. 21, the decorative sheet 40 faces the area not covered by the support frame 34 of the surface light source device 50 in its first area Z1 that forms the light emitting surface EP. Also, the decorative sheet 40 faces the support frame 34 covering the surface light source device 50 in the second region Z2. In the example shown in FIG. 22, the second area Z2 of the decorative sheet 40 extends to the area facing the side surface of the surface light source device 50 via the support frame 34. In the example shown in FIG. Furthermore, in the example shown in FIGS. 21 and 22 , the illumination device 20 has a support plate 35 supported by the support frame 34 together with the surface light source device 50 . The support plate 35 is a member for imparting rigidity to the lighting device 20, and may be a plate member made of metal such as aluminum, for example. The support plate 35 can be applied not only to the examples shown in FIGS. 21 and 22 but also to other examples, but it is also possible to omit it from the examples of FIGS.

Furthermore, as another modification, the lighting device 20 described above can be used alone without being combined with the base lighting device 13 . Also in this example, the lighting device 20 can produce the atmosphere of the space S, and may be given the function of illuminating the space S.

Furthermore, although the lighting device 20 described above has been described as constituting the wall W as the building material panel BP, it is not limited to this, and may constitute the ceiling CE or the floor F. You may make it

The lighting device 20 including the decorative sheet 40 and the surface light source device 50 may be handled as an assembly kit. That is, a combination of at least a part of the optical member 55 of the surface light source device 50 and the decorative sheet 40 may be distributed or sold as an assembly kit and installed in a building or a moving body. In this example, the decorative sheet 40 and the surface light source device 50 constituting the assembly kit may be sequentially installed in a building or a moving object to produce a structure, or alternatively, the decorative sheet constituting the assembly kit may be installed first. 40 and the surface light source device 50 may be used to assemble the illumination device 20 and the building material panel BP, and then the assembled illumination device 20 and the building material panel BP may be installed in a building or a moving body to produce a structure. .

Although several modifications of the above-described embodiment have been described above, it is of course possible to apply a plurality of modifications in appropriate combination.

S Space H User EP Light-emitting surface LZ Light-emitting area LZ1 First light-emitting area LZ2 Second light-emitting area XA Range of conscious influence XB Range of unconscious influence 10 Lighting system 13 Base lighting device 15 Control device 18 Detection sensor 20 Lighting device 21 First lighting device 22 Second lighting device 23 Third lighting device 24 Fourth lighting device 40 Decorative sheet 50 Surface light source device 51 Light source 52 Light emitter 55 Optical member

Claims (12)

a lighting device that has a light emitting surface and emits light into a space;
a control device that controls the lighting device ,
The control device is
When the user of the space is in one of a first state and a second state different from the first state, the light-emitting region of the light-emitting surface is in the one state. It is outside the range that a certain user expects within a predetermined angle of elevation and angle of depression,
When the user is in the other of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is in the other state. so that it is within the range that the person expects within the predetermined elevation and depression angles,
A lighting system that controls the lighting device . The control device is
When the user is in the second state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less,
When the user is in the first state, at least part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 10° or less and a depression angle of 10° or less. ,
2. The lighting system of claim 1, controlling the lighting device. The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 10° or less and a depression angle of 10° or less,
When the user is in the second state, at least part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less. ,
2. The lighting system of claim 1, controlling the lighting device. The control device is
When the user is in the first state, the light-emitting region of the light-emitting surface is outside the range that the user can see at an elevation angle of 30° or less and a depression angle of 30° or less,
When the user is in the second state, at least part of the light-emitting region of the light-emitting surface is within a range that the user can see at an elevation angle of 40° or less and a depression angle of 40° or less. ,
2. The lighting system of claim 1, controlling the lighting device. Further comprising a detection sensor that detects the state of the user,
The lighting system according to any one of claims 1 to 4, wherein said control device controls said lighting device based on a detection result of said detection sensor. 6. The lighting system according to claim 5, wherein the detection sensor detects at least one of the user's blinking motion, number of blinks, pupil state, line-of-sight direction, and facial motion. The control device is
so that the luminescent color of the light-emitting surface when the user of the space is in the first state is different from the luminescent color of the light-emitting surface when the user is in the second state,
A lighting system according to any one of the preceding claims, for controlling the lighting device. The lighting system according to any one of claims 1 to 7, wherein the light emitting surface is provided on a wall that partitions the space. The amount of light emitted from a certain area of the light-emitting surface is smaller than the amount of light emitted from other certain areas of the light-emitting surface that are closer to the ceiling that defines the space than the area of the light-emitting surface. Item 9. The lighting system according to Item 8. The amount of light emitted from a region of a certain area located within the range in which the user can perceive the color on the light emitting surface is outside the range in which the user can perceive the color on the light emitting surface. 10. Illumination system according to any one of the preceding claims, wherein the amount of light emitted is less than the amount of light emitted from the area of constant area in which it is located. The lighting system according to any one of claims 1 to 10, further comprising a base lighting device provided on the ceiling that defines the space. A method of illuminating a space using a lighting device having a light emitting surface,
detecting whether the user of the space is in a first state or a second state different from the first state;
illuminating the light-emitting surface by emitting light based on the detection result in the detecting step;
When the user of the space is in either one of the first state and the second state, the user who is in one of the first state and the second state may move the area of the light emitting surface that emits light. Outside the expected range within the specified elevation and depression angles,
When the user is in the other state of the first state and the second state, at least part of the light-emitting region of the light-emitting surface is used in the other state. A method of lighting within a range that a person sees within a predetermined angle of elevation and angle of depression.

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