JP6836871B2 - Lighting system - Google Patents

Description

The present invention relates to a technique for a lighting system that illuminates a room.

Conventionally, the technology of a lighting system for illuminating a room has been known. For example, as described in Patent Document 1.

Patent Document 1 describes a lighting system including a task lighting device for illuminating a desk on which an operator works, and an ambient lighting device for illuminating the entire interior space. .. In this technique, the output of the ambient lighting device can be suppressed by securing the required illuminance on the desk surface by the task lighting device, and the lighting system as a whole can save energy.

Since such technology (so-called task / ambient lighting) is generally expected to be applied to offices, etc., the required illuminance on the desk surface is secured, and the occupants (users of the desk) There is a tendency to emphasize improving workability.

However, even if the required illuminance on the desk surface is secured, if the overall illuminance of the indoor space is low, the workability of the occupants may decrease. For example, when the indoor space is dim, even if the required illuminance on the desk surface is secured, the occupants may get a dark impression from the dimness of the indoor space, which may have an adverse effect such as a decrease in work efficiency.

Japanese Unexamined Patent Publication No. 2005-235553

The present invention has been made in view of the above circumstances, and the problem to be solved is to provide a lighting system capable of making the indoor space feel bright to the occupants.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.

That is, in claim 1, a hand lighting device provided corresponding to a seat arranged in a room and provided at a height of 1.5 m or more and less than 2.0 m from the floor surface of the room, and the hand lighting. A space lighting device provided above the device and irradiating light toward the ceiling of the room, a control device capable of controlling the operation of the hand lighting device and the space lighting device, and a resident in the room are detected. The control device includes, among the seats arranged in the room, the occupants based on the number of occupants detected by the occupant detection means. There was calculated the occupants which is a ratio of the detected said seat to control the operation of the hand lighting device and said spatial illumination device in accordance with the occupants rate, calculated the occupants rate When it is equal to or higher than a predetermined threshold value, the operation of the hand lighting device is controlled and calculated so that the hand lighting device provided corresponding to the seat in which the occupant is seated is turned on. When the occupancy rate is less than a predetermined threshold value, the hand lighting device provided corresponding to the seat in which the occupant is seated is turned on, and the hand lighting devices of the plurality of hand lighting devices are turned on. The operation of the hand lighting device is controlled so that the hand lighting device is lit at a predetermined ratio or more.

In claim 2, when the calculated occupancy rate is equal to or greater than a predetermined threshold value, the control device is more likely to use the space than when the calculated occupancy rate is less than a predetermined threshold value. The operation of the space lighting device is controlled so that the illuminance of the lighting device becomes high .

In claim 3 , the space lighting device is provided at a position separated from the ceiling of the room by 20 cm or more.

In claim 4 , the ceiling is processed to diffuse and reflect light.

In claim 5 , the control device controls the operation of the hand lighting device and the space lighting device according to the presence or absence of a resident occupant detected by the occupant detection means.

In claim 6 , the control device controls the operation of the hand lighting device and the space lighting device according to a time zone.

In claim 7 , the compartmentalized detection means for detecting whether or not a resident is present in each of the plurality of compartments set in the room is further provided, and the control device is provided by the compartmentalized detection means. The operation of the hand lighting device and the space lighting device is controlled for each of the sections according to the presence or absence of the detected occupants in the room.

As the effect of the present invention, the following effects are exhibited.

In claim 1, it is possible to make the occupants feel the indoor space bright. In addition, the lighting environment can be adjusted according to the occupancy rate.

In claim 2, the indoor space can be made to feel bright to the occupants. In addition, the lighting environment can be adjusted according to the occupancy rate.

In claim 3 , the indoor space can be effectively brightened.

In claim 4 , the indoor space can be effectively brightened.

In claim 5 , the lighting environment can be adjusted according to the presence or absence of occupants.

In claim 6 , the lighting environment can be adjusted according to the time zone.

In claim 7 , the lighting environment can be adjusted according to the presence or absence of occupants in each section.

The side schematic diagram which showed the structure of the lighting system which concerns on one Embodiment of this invention. Schematic diagram of the lighting system. The flowchart which shows the control mode of a lighting system. The flowchart which shows the continuation of FIG. (A) A schematic plan view showing a state in which less than 50% of the hand lighting device is lit. (B) A schematic plan view showing how 50% of the hand lighting devices are lit. A schematic plan view showing the state of lighting when there are no occupants in the room. A schematic plan view showing the state of lighting in a time zone such as before working hours. The plan view which showed the state of lighting when the occupancy rate is 80% or more. The plan view which showed the state of lighting when the occupancy rate is less than 80%. A schematic plan view showing the state of lighting when there is a work section where no one is present. (A) Schematic diagram of a side surface showing a first modification of a space lighting device or the like. (B) A side schematic view showing a second modification of a space lighting device or the like.

First, the outline of the room 1 to which the lighting system 100 according to the present embodiment is applied will be described with reference to FIGS. 1 and 2.

In the present embodiment, the room 1 is assumed to be a room (office) in which the resident P performs office work and the like. In the room 1, a plurality of desks 2 on which the resident P performs work and the like are arranged. In the present embodiment, as shown in FIG. 2, one work section S is formed by arranging a plurality of (six) desks 2 in a concentrated manner. A plurality of work sections S are formed in the room 1. Note that FIG. 2 shows two of the work compartments S formed in the room 1.

Next, the configuration of the lighting system 100 according to the present embodiment will be described.

The lighting system 100 automatically adjusts the lighting environment inside (indoors) of the room 1 so as to be suitable for the occupant P. The lighting system 100 mainly includes a space lighting device 110, a hand lighting device 120, an operating tool 130, a motion sensor 140, and a control device 150.

The space lighting device 110 adjusts the lighting (ambient lighting) of the entire room of the room 1. The space lighting device 110 mainly includes a gantry 111 and a light source 112. The gantry 111 is formed in a beam shape. The gantry 111 is provided at a position separated downward by a predetermined interval from the ceiling 1a of the room 1. The light source 112 is fixed to the upper surface of the gantry 111. As the light source 121, a fluorescent lamp, an LED, or the like can be used.

In the present embodiment, the space lighting device 110 is installed at a position separated from the ceiling 1a by 20 cm or more. The space lighting device 110 is arranged so that the light irradiation direction faces upward (that is, the ceiling 1a). A plurality of space lighting devices 110 are provided in the room 1 at appropriate intervals. The space lighting device 110 can appropriately adjust the output.

When the space lighting device 110 configured in this way emits light, the light from the space lighting device 110 is irradiated to the ceiling 1a of the room 1. In this way, the space lighting device 110 can illuminate the entire room 1 as indirect lighting by irradiating the ceiling 1a with light.

In particular, in the present embodiment, the ceiling 1a is processed to diffuse and reflect light. As a result, the light from the space lighting device 110 is diffused when reflected by the ceiling 1a, so that the entire room 1 can be made brighter. As a processing method of the ceiling 1a, there are a method of pasting a white diffuse reflection film or cloth (wallpaper), a method of applying a paint having a relatively high diffuse reflectance, and the like. At this time, it is desirable that the diffuse reflectance of the ceiling 1a exceeds 90%.

Note that FIG. 1 shows a state in which the space lighting device 110 is installed above each desk 2, but in FIG. 2, for convenience of explanation, one is schematically for each work section S. Only the space lighting device 110 is shown.

The hand lighting device 120 mainly adjusts the local lighting (task lighting) around the desk 2. The hand lighting device 120 is arranged below (lower position) than the space lighting device 110. The hand lighting device 120 is suspended from the space lighting device 110. In the present embodiment, the hand lighting device 120 is installed so as to be at a height of 1.5 m or more and less than 2.0 m from the floor surface 1b of the room 1. The hand lighting device 120 is provided so as to correspond to the desk 2 arranged in the room 1, that is, one hand lighting device 120 is provided for one desk 2. The hand lighting device 120 is arranged directly above the desk 2. The hand lighting device 120 can appropriately adjust the output.

The hand lighting device 120 mainly includes a light source 121 and a shade 122. The light source 121 is a light emitting body that emits light. As the light source 121, a light bulb, an LED, or the like can be used. The shade 122 is a cover for controlling the light emitted from the light source 121 by covering the light source 121. The shade 122 is formed in a bowl shape so as to cover the upper side and the side surface of the light source 121. The shade 122 is made of a translucent material. As a result, the light from the light source 121 is applied not only on the desk 2 but also in a relatively wide range. Further, the light of the light source 121 can be visually recognized through the shade 122 even from the side of the hand lighting device 120. In this way, the hand lighting device 120 not only secures the brightness of the desk 2, but also the brightness in the space of the room 1 and the brightness that the occupant P who sees the hand lighting device 120 feels sensuously. Can be enhanced.

When the hand lighting device 120 configured in this way emits light, the light from the hand lighting device 120 is irradiated to the lower desk 2. As a result, the hand of the occupant P who is using the desk 2 can be illuminated so as to be bright. Further, when the hand lighting device 120 emits light, the light is also emitted to the side through the shade 122. As a result, not only the occupant P who is using the desk 2 corresponding to the hand illuminating device 120 but also other occupants P in the surrounding area can visually recognize how the hand illuminating device 120 is emitting light. Can be done. In particular, the hand lighting device 120 is 1.5 m or more (approximately the same height as the eye position of the standing woman) and less than 2.0 m (height sufficiently within the visual field range of the standing woman) from the floor surface 1b. It is installed at a height. Therefore, the state of light emission of the hand lighting device 120 can be positively visually recognized by the surrounding occupants P. As a result, the room 1 can give a bright impression to the resident P.

The operation tool 130 shown in FIG. 1 adjusts the output of the hand lighting device 120. The operating tool 130 is provided on each desk 2. By operating the operating tool 130, the output (illuminance) of the hand lighting device 120 corresponding to the desk 2 can be adjusted. The operating tool 130 is mainly operated by a resident P who is seated on the desk 2.

The motion sensor 140 detects the occupant P who is seated (seat) on the desk 2. As the motion sensor 140, an infrared sensor, an ultrasonic sensor, or the like can be used. The motion sensor 140 is fixed to the lower part of the space lighting device 110. The motion sensor 140 is provided so as to correspond to the desk 2 arranged in the room 1, that is, one motion sensor 140 is provided for one desk 2.

The control device 150 controls the operations of the space lighting device 110 and the hand lighting device 120 based on the detection result of the motion sensor 140 and the like. The control device 150 is composed of a storage unit such as a RAM or ROM, an arithmetic processing unit such as a CPU, or the like, and can perform predetermined arithmetic processing, storage, or the like based on various information.

The control device 150 is connected to the operating tool 130 and can receive information about the operating amount of the operating tool 130.
The control device 150 is connected to the motion sensor 140 and can receive the detection result by the motion sensor 140.
Further, the control device 150 is connected to the space lighting device 110 and the hand lighting device 120, and can control the operation of the space lighting device 110 and the hand lighting device 120.

Hereinafter, the control mode of the lighting system 100 configured as described above will be described.

In step S101 shown in FIG. 3, the control device 150 determines whether or not there is a resident P in the room 1 based on the detection result by the motion sensor 140. Specifically, in step S101, the control device 150 determines that the occupant P is in the room 1 when even one occupant P is detected by the motion sensor 140. Further, the control device 150 determines that there is no occupant P in the room 1 when no occupant P is detected by the motion sensor 140.

When the control device 150 determines that there is no resident P in the room 1, the control device 150 proceeds to step S102.
Further, when the control device 150 determines that there is a resident P in the room 1, the control device 150 proceeds to step S103.

In step S102, the control device 150 turns off all the space lighting device 110 and the hand lighting device 120.

On the other hand, in step S103 shifted from step S101, the control device 150 determines whether or not it is currently before the working hours of the office or during lunch break based on the data of the current date and time input from the outside.

The office working hours, lunch break hours, and the like are stored in advance in the control device 150.

If the control device 150 determines that it is currently before the working hours of the office or during the lunch break, the control device 150 proceeds to step S104.
Further, when it is determined that the control device 150 is not currently before the working hours of the office and during the lunch break, the control device 150 proceeds to step S105.

In step S104, the control device 150 adjusts the outputs of the space lighting device 110 and the hand lighting device 120. Specifically, the control device 150 controls the illuminance of the space lighting device 110 so as to be about 100 lpx. Further, the control device 150 controls the illuminance of the hand lighting device 120 corresponding to the desk 2 in which the occupant P is seated so as to be about 200 lux. At this time, when the occupant P is operating the operation tool 130, the adjustment of the hand lighting device 120 by the operation tool 130 is prioritized. That is, the control device 150 adjusts the hand lighting device 120 so as to have the desired illuminance of the occupant P. Further, the control device 150 turns off the hand lighting device 120 corresponding to the desk 2 in which the occupant P is not seated.

On the other hand, in step S105 shifted from step S103, the control device 150 calculates the occupancy rate of the room 1 based on the detection result by the motion sensor 140. In the present embodiment, the occupancy rate means the ratio (%) of the desks 2 in which the occupant P is detected among the desks 2 arranged in the room 1.

Further, the control device 150 determines whether or not the calculated occupancy rate is 80% or more (80% or more, 100% or less).
When the control device 150 determines that the occupancy rate is 80% or more, the control device 150 proceeds to step S106.
Further, when the control device 150 determines that the occupancy rate is less than 80%, the control device 150 proceeds to step S107 (see FIG. 4).

In step S106, the control device 150 adjusts the outputs of the space lighting device 110 and the hand lighting device 120. Specifically, the control device 150 controls the illuminance of the space lighting device 110 so as to be about 300 lpx. Further, the control device 150 controls the illuminance of the hand lighting device 120 corresponding to the desk 2 in which the occupant P is seated so as to be about 300 lpx. At this time, when the occupant P is operating the operation tool 130, the adjustment of the hand lighting device 120 by the operation tool 130 is prioritized. Further, the control device 150 turns off the hand lighting device 120 corresponding to the desk 2 in which the occupant P is not seated.

On the other hand, in step S107 (see FIG. 4), which is a transition from step S105, the control device 150 has a work section S in which all the members are absent in the work section S of the room 1 based on the detection result by the motion sensor 140. Determine if it exists. Here, the work section S in which all the members are absent means a state in which no occupant P is seated on the desk 2 in the work section S.

When the control device 150 determines that there is no work section S in which all the members are absent in the work section S of the room 1, the process proceeds to step S108.
Further, when the control device 150 determines that there is a work section S in which all the members are absent in the work section S of the room 1, the process proceeds to step S109.

In step S108, the control device 150 adjusts the outputs of the space lighting device 110 and the hand lighting device 120. Specifically, the control device 150 controls the illuminance of the space lighting device 110 so as to be about 200 lpx. Further, the control device 150 controls the illuminance of the hand lighting device 120 corresponding to the desk 2 in which the occupant P is seated so as to be about 200 lux. At this time, when the occupant P is operating the operation tool 130, the adjustment of the hand lighting device 120 by the operation tool 130 is prioritized.

Further, the control device 150 controls the hand lighting device 120 so that 50% or more of the plurality of hand lighting devices 120 provided in the work section S are lit. For example, as shown in FIG. 5A, it is assumed that two occupants P are seated in a certain work section S. The hand lighting device 120 shown in black in the figure means that the light is turned off. In this case, since the hand lighting devices 120 of the two desks 2 in which the occupant P is seated are first lit, about 33% (two out of six) of the hand lighting devices 120 are lit in the work area S. Will be done. Therefore, as shown in FIG. 5B, the control device 150 lights the hand lighting device 120 of the desk 2 in which the occupant P is not seated at about 200 lux. .. As a result, 50% (three out of six) of the hand lighting device 120 is turned on in the work section S. At this time, the other hand lighting devices 120 (the remaining three hand lighting devices 120) are turned off.

On the other hand, in step S109 shifted from step S107, the control device 150 adjusts the outputs of the space lighting device 110 and the hand lighting device 120 provided in the work section S where all the members are absent. Specifically, the control device 150 turns off all the space lighting devices 110 in the work section S. Further, the control device 150 controls the hand lighting device 120 so that 50% or more of the plurality of hand lighting devices 120 provided in the work section S are lit. Specifically, three (50%) hand lighting devices 120 are selected from the six hand lighting devices 120 provided in the work section S, and the three hand lighting devices 120 are lit at about 200 lux. ..

The control device 150 proceeds to step S110 after performing the process of step S109.

In step S110, the control device 150 adjusts the outputs of the space illuminator 110 and the hand illuminator 120 provided in the work area S where not all are absent. That is, the control device 150 adjusts the work section S in which the output of the space lighting device 110 or the like is not adjusted in step S109 in step S110. Specifically, the control device 150 controls the illuminance of the space lighting device 110 in the work area S so as to be about 200 lpx. Further, the control device 150 controls the illuminance of the hand lighting device 120 corresponding to the desk 2 in which the occupant P is seated so as to be about 200 lux. At this time, when the occupant P is operating the operation tool 130, the adjustment of the hand lighting device 120 by the operation tool 130 is prioritized.

Further, the control device 150 controls the hand lighting device 120 so that 50% or more of the plurality of hand lighting devices 120 provided in the work section S are lit. This process is substantially the same as the process in step S108.

As described above, the control device 150 repeats the processes from step S101 to step S110 to adjust the lighting environment (spatial lighting device 110 and hand lighting device 120) of the room 1. Hereinafter, a specific example when the lighting environment is adjusted by the control device 150 will be described.

When there is no resident P in the room 1 (No in step S101, step S102), as shown in FIG. 6, the space lighting device 110 and the hand lighting device 120 are all turned off. The space lighting device 110 shown in black in the figure means that the space lighting device 110 is turned off. As described above, when there is no occupant P in the room 1, lighting is unnecessary, so that energy can be saved by turning off all the space lighting devices 110 and the like.

Further, at present, when the office is before working hours or during lunch break (Yes in step S103, step S104), as shown in FIG. 7, the space lighting device 110 is turned on so that the illuminance becomes about 100 lpx. Further, the hand lighting device 120 is lit so that the illuminance is about 200 lux (or the desired illuminance of the occupant P) only when the occupant P is seated on the corresponding desk 2.

As described above, before working hours and the like, the illuminance of the space lighting device 110 can be kept relatively low to save energy. Further, by lighting only the hand lighting device 120 of the desk 2 in which the occupant P is seated with a relatively low illuminance, the minimum necessary brightness can be ensured. Further, in this case, since the lit hand lighting device 120 is in the field of view of the occupant P, the room 1 can give a bright impression to the occupant P. That is, the illuminance of the space lighting device 110 can be suppressed to a low level to save energy without giving a dark impression to the occupant P.

Further, when the occupancy rate is 80% or more during working hours (80% or more in step S105, step S106), as shown in FIG. 8, the space lighting device 110 lights up so that the illuminance becomes about 300 lpx. .. Further, the hand lighting device 120 is lit so that the illuminance of only the one in which the occupant P is seated on the corresponding desk 2 is about 300 lux (or the desired illuminance of the occupant P).

In this way, when there are many people in room 1 during working hours (when the occupancy rate is 80% or more), the brightness of the entire room 1 is brightened by maximizing the illuminance of the space lighting device 110. Can be ensured. Further, by lighting only the hand lighting device 120 of the desk 2 in which the occupant P is seated with the highest illuminance, it is possible to improve the work efficiency of the occupant P who uses the desk 2.

Further, when the occupancy rate is less than 80% during working hours and there is no work section S in which all the members are absent in the work section S of the room 1 (No in step S107, step S108), as shown in FIG. In addition, the space lighting device 110 is turned on so that the illuminance becomes about 200 lux. Further, the hand lighting device 120 is lit so that the illuminance is about 200 lux (or the desired illuminance of the occupant P) only when the occupant P is seated on the corresponding desk 2. Further, when less than 50% of the plurality of hand lighting devices 120 provided in the work section S are lit, the hand lighting device 120 is appropriately turned on so as to be 50% or more.

As described above, in the room 1, when the occupants P are seated relatively sparsely (the occupancy rate is less than 80%) and there is no work section S in which all the members are absent, the space lighting device 110 The illuminance can be suppressed to be slightly low, and the brightness of the room 1 (the perceptual brightness when the hand lighting device 120 comes into the view of the occupant P) can be supplemented by the hand lighting device 120. By supplementing the brightness with the hand lighting device 120 in this way, the illuminance of the space lighting device 110 can be suppressed while considering the brightness of the room 1, and thus energy saving can be achieved. Further, by lighting the hand lighting device 120 of the work section S by 50% or more, it is possible to prevent the occupant P from giving a dark impression.

Further, when the occupancy rate is less than 80% during working hours and there is a work section S in which all the members are absent in the work section S of the room 1 (Yes in step S107, step S109, step S110), FIG. As shown in the above, the space lighting device 110 in the work section S in which all the members are absent is turned off. Further, 50% or more of the hand lighting device 120 in the work section S is lit so that the illuminance is about 200 lux.

In this way, when there is a work section S in which all the members are absent, by lighting 50% or more of the hand lighting device 120 in the work section S, the occupant P who visually recognizes the hand lighting device 120 is referred to. Can give a bright impression. As a result, the space lighting device 110 can be turned off to save energy without giving a dark impression to the occupant P.

As described above, the lighting system 100 according to the present embodiment is
A hand lighting device 120 provided corresponding to the desk 2 (seat) arranged in the room 1 and provided at a height of 1.5 m or more and less than 2.0 m from the floor surface 1b of the room 1.
A space lighting device 110 provided above the hand lighting device 120 and irradiating light toward the ceiling 1a of the room 1 and the space lighting device 110.
A control device 150 capable of controlling the operation of the hand lighting device 120 and the space lighting device 110, and
Is provided.
With this configuration, the occupant P can feel the indoor space bright. That is, by arranging the hand lighting device 120 at a height that is easily visible to the occupant P, the occupant P is shown how the hand lighting device 120 is lit, and the interior space is sensuously brightened. be able to. As a result, the atmosphere of the room 1 can be optimized (a lively atmosphere), and work efficiency can be improved. Further, by supplementing the brightness with the hand lighting device 120 having relatively low power consumption, it is possible to save energy by reducing the illuminance of the space lighting device 110 having relatively high power consumption.

In addition, the hand lighting device 120
Light source 121 and
A translucent shade 122 (cover) covering the light source 121 and
Is provided.
With such a configuration, the occupant P can feel the indoor space more effectively and brightly. That is, by making the occupant P visually recognize the light from the light source 121 through the translucent shade 122, the occupant P is made to visually recognize the soft light, and the impression that the room 1 is brightened as a whole. Can be given.

In addition, the space lighting device 110 is
It is provided at a position 20 cm or more away from the ceiling of the room 1.
With such a configuration, the indoor space can be effectively brightened. That is, by irradiating a wide range of the ceiling with the light from the space lighting device 110, the indoor space can be brightened in a wider range.

Further, on the ceiling 1a,
It is processed to diffuse and reflect light.
With such a configuration, the indoor space can be effectively brightened. That is, by promoting the diffusion of light from the space lighting device 110, the indoor space can be brightened in a wider range.

In addition, the lighting system 100
A motion sensor 140 (resident occupant detecting means) for detecting the occupant P in the room 1 is further provided.
The control device 150
The operation of the hand lighting device 120 and the space lighting device 110 is controlled according to the presence or absence of the occupant P detected by the motion sensor 140.
With this configuration, the lighting environment can be adjusted according to the presence or absence of the occupant P.

In addition, the lighting system 100
A motion sensor 140 for detecting the occupant P in the room 1 is further provided.
The control device 150
Based on the number of occupants P detected by the motion sensor 140, the occupancy rate, which is the degree of the number of occupants P, is calculated, and the hand lighting device is based on the occupancy rate. It controls the operation of the 120 and the space lighting device 110.
With this configuration, the lighting environment can be adjusted according to the occupancy rate.

In addition, the control device 150
The operation of the hand lighting device 120 and the space lighting device 110 is controlled according to the time zone.
With this configuration, the lighting environment can be adjusted according to the time zone.

In addition, the lighting system 100
A motion sensor 140 (section-specific detection means) for detecting whether or not a resident P exists in each of the plurality of work sections S (sections) set in the room 1 is further provided.
The control device 150
The operation of the hand lighting device 120 and the space lighting device 110 is controlled for each work section S according to the presence or absence of the occupant P detected by the motion sensor 140.
With this configuration, it is possible to adjust the lighting environment according to the presence or absence of the occupants P in each work section S.

The desk 2 according to the present embodiment is an embodiment of the seat according to the present invention.
Further, the shade 122 according to the present embodiment is an embodiment of the cover according to the present invention.
Further, the motion sensor 140 according to the present embodiment is an embodiment of the occupant detection means and the division-specific detection means according to the present invention.
Further, the work section S according to the present embodiment is an embodiment of the section according to the present invention.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications can be made within the scope of the invention described in the claims.

For example, the configurations of the space lighting device 110 and the hand lighting device 120 are not limited to the above embodiment (see FIG. 1). For example, as in the first modification shown in FIG. 11A, the light source 112 may be provided on the upper surface of the gantry 111 suspended from the ceiling to form the space lighting device 110. Further, the light source 121 may be provided on the lower surface of the gantry 111 to serve as the hand lighting device 120. Further, as in the first modification shown in FIG. 11B, the gantry 111 may be fixed to the desk 2.

Further, in the present embodiment, the shade 122 of the hand lighting device 120 is formed of a translucent material, but it can also be formed of, for example, a highly transparent (transparent) material. However, if the shade 122 is made of a transparent material, the occupant P may feel dazzling when he / she visually recognizes the light source 121, which may make other spaces feel relatively dark. Therefore, it is preferable that the shade 122 is formed semi-transparently capable of blocking light to some extent.

Further, in the present embodiment, the occupant P sitting on the desk 2 is detected by the motion sensor 140 configured by an infrared sensor or the like, but the present invention is not limited to this. It can be detected by various methods. For example, it is possible to detect the occupant P by a pressure sensor that detects the pressure when the occupant P sits on a chair, or by an image recognition function using an image acquired by a camera.

Further, in the present embodiment, the presence or absence of the occupant P in the room 1 is detected by using the motion sensor 140, but the present invention is not limited to this, and the occupant P who is seated is detected. In addition to the motion sensor 140, it is also possible to provide a sensor for detecting whether or not a resident P is present in the room 1.

Further, in the present embodiment, in step S103 of FIG. 3, it is determined whether or not the office is before working hours or during lunch break, but this is an example, and an arbitrary time zone can be set. For example, if a time zone in which the occupant P does not originally exist in the room 1 (the room 1 is not used) is set, the space lighting device 110 and the like can be turned off in the time zone (see step S102). It is possible to save energy.

Further, in the present embodiment, in step S105 of FIG. 3, the occupancy rate is calculated based on the number of desks 2 arranged in the room 1, but the definition of the occupancy rate according to the present invention. Is not limited to this. That is, the occupancy rate can be arbitrarily defined as long as it can indicate the degree of the number of occupants P in the room 1. For example, the ratio of the actual number of occupants P to the originally assumed number of occupants P (capacity of room 1) may be used as the occupancy rate.

Further, in the present embodiment, a configuration in which one hand lighting device 120 is provided for one desk 2 is illustrated, but the present invention is not limited to this, and for example, two desks 2 (arranged facing each other). One hand lighting device 120 may be provided for the pair of desks 2). That is, as long as the desk 2 and the hand lighting device 120 correspond to each other, the number may be different.

Further, in the present embodiment, an example assuming an office has been shown, but the present invention is not limited to this, and can be applied to various rooms.

1 Room 1a Ceiling 1b Floor 2 Desk 100 Lighting system 110 Spatial lighting device 120 Hand lighting device 121 Light source 122 Sade 130 Operating tool 140 Motion sensor 150 Control device

Claims (7)

A hand lighting device that is installed corresponding to the seats arranged in the room and is installed at a height of 1.5 m or more and less than 2.0 m from the floor surface of the room.
A space lighting device provided above the hand lighting device and irradiating light toward the ceiling of the room,
A control device capable of controlling the operation of the hand lighting device and the space lighting device, and
The occupant detection means for detecting the occupants of the room and
Equipped with
The control device is
Based on the number of occupants detected by the occupant detection means, the occupancy rate, which is the ratio of the seats in which the occupants are detected among the seats arranged in the room, is calculated. , Control the operation of the hand lighting device and the space lighting device according to the occupancy rate .
When the calculated occupancy rate is equal to or higher than a predetermined threshold value, the hand illuminating device is lit so that the hand illuminating device provided corresponding to the seat in which the occupant is seated lights up. Control the behavior of
When the calculated occupancy rate is less than a predetermined threshold value, the hand lighting device provided corresponding to the seat in which the occupant is seated is turned on, and the plurality of hands are turned on. The operation of the hand lighting device is controlled so that the hand lighting device at a predetermined ratio or more among the lighting devices is turned on.
Lighting system. The control device is
When the calculated occupancy rate is equal to or higher than a predetermined threshold value, the illuminance of the space lighting device is higher than that when the calculated occupancy rate is less than the predetermined threshold value. Control the operation of the space illuminator,
The lighting system according to claim 1. The space lighting device is
Provided at a position 20 cm or more away from the ceiling of the room.
The lighting system according to claim 1 or 2. On the ceiling
Processed to diffuse and reflect light,
The lighting system according to any one of claims 1 to 3. The control device is
The operation of the hand lighting device and the space lighting device is controlled according to the presence or absence of a resident occupant detected by the occupant detection means.
The lighting system according to any one of claims 1 to 4. The control device is
Control the operation of the hand lighting device and the space lighting device according to the time zone.
The lighting system according to any one of claims 1 to 5. Further, a compartmentalized detection means for detecting whether or not a resident is present in each of the plurality of compartments set in the room is provided.
The control device is
The operation of the hand lighting device and the space lighting device is controlled for each of the compartments according to the presence or absence of the occupants detected by the compartmentalized detection means.
The lighting system according to any one of claims 1 to 6.

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