JP2022181430A - Environment control system - Google Patents

Abstract

To provide an environment control system in which an air conditioning control matched to more people can be performed while suppressing deterioration in thermal comfortableness of persons who have different hot/cool feelings.SOLUTION: The same number of individual illumination devices 21 provided in an environment control system as that of individual operation spaces 2 in a manner that each corresponds to each individual operation space 2, and each can radiate light of a first color temperature and light of a second color temperature higher than the first color temperature. A device control part 43 causes the individual illumination device 21 of an operator whose hot/cool feeling is on a cooler side and on neutral to radiate the light of the first color temperature when the number of persons whose hot/cool feeling is on the cooler side from the neutral is larger than the number of persons whose hot/cool feeling is on a hotter side, causes the individual illumination device 21 of an operator whose hot/cool feeling is on a hotter side to radiate the light of the second color temperature, and executes a hot/cool feeling adjustment control of increasing a setting temperature of an air conditioning device 10.SELECTED DRAWING: Figure 2

Description

FIELD OF THE DISCLOSURE The present disclosure relates to environmental control systems.

Depending on the operation mode (cooling or heating), the room temperature is raised or lowered from the set temperature received by the operation unit, and the room temperature is raised or lowered from the set temperature depending on the operation mode (cooling or heating). There is known an air conditioner that determines whether or not the user feels hot (or cold) and performs a temperature setting operation (see, for example, Patent Document 1). Further, in the air conditioner described in Patent Document 1, when the set temperature is increased or decreased according to the operation mode (cooling or heating), a control signal for controlling the light color of the light source of the lighting device is output to the lighting device. Send to

JP 2009-276007 A

However, in the technique disclosed in Patent Literature 1, the air conditioner (air conditioner) and the lighting device are controlled based on the thermal sensation of the operator of the temperature setting. For this reason, when there are multiple people in the target space for air conditioning and lighting, the thermal sensation of the operator does not necessarily represent all the other people in the target space. It is difficult to control the air conditioning according to the number of people. In addition, even if the operator's thermal sensation matches that of many other people in the target space, some people who have thermal sensations different from those of most people may not be thermally comfortable. It may go down.

The present disclosure has been made to solve such problems. The purpose is to suppress the deterioration of the thermal comfort of people with different thermal sensations, even if there are people with different thermal sensations in the target space, and to increase the number of people. To provide an environment control system capable of controlling air conditioning according to people.

An environment control system according to the present disclosure includes an air conditioner that supplies air whose temperature is adjusted based on a set temperature in a target space, and an individual that irradiates light into the personal work space of each worker working in the target space. a lighting device, a thermal sensation detection means for detecting the thermal sensation of each worker, and a control means for controlling the air conditioner and the personal lighting device, wherein the personal lighting device is The same number of personal work spaces are provided corresponding to each of the personal work spaces, and each of them can irradiate light of a first color temperature and light of a second color temperature higher than the first color temperature, and the control When the number of workers whose thermal sensation is colder than neutral is greater than the number of workers whose thermal sensation is hotter than neutral, Light of the first color temperature is emitted from the personal lighting device corresponding to the personal work space of the worker who is cold and neutral, and the worker whose thermal sensation is hotter than neutral. The personal lighting device corresponding to the personal work space in (1) emits light of the second color temperature and performs thermal sensation adjustment control to increase the set temperature.

According to the environment control system according to the present disclosure, even if there are people in the target space who have thermal sensations different from those of many other people, it is possible to reduce the thermal comfort of those people who have different thermal sensations. It is possible to perform air conditioning control suitable for more people while suppressing noise.

2 is a side view schematically showing the configuration of the target space of the environment control system according to Embodiment 1; FIG. 2 is a block diagram showing the configuration of the control system of the environment control system according to Embodiment 1; FIG. FIG. 4 is a flow chart showing an example of the operation of the environment control system according to Embodiment 1;

A mode for implementing an environment control system according to the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and overlapping descriptions are appropriately simplified or omitted. In the following description, for the sake of convenience, the positional relationship of each structure may be expressed based on the illustrated state. It should be noted that the present disclosure is not limited to the following embodiments, and any combination of the embodiments, any modification of the constituent elements of the embodiments, or each Any component of the embodiment can be omitted.

Embodiment 1.
A first embodiment of the present disclosure will be described with reference to FIGS. 1 to 3. FIG. FIG. 1 is a side view schematically showing the configuration of the target space of the environmental control system. FIG. 2 is a block diagram showing the configuration of the control system of the environmental control system. FIG. 3 is a flow diagram showing an example of the operation of the environment control system.

The environment control system according to this embodiment includes an air conditioner 10 and a personal lighting device 21, as shown in FIG. The air conditioner 10 air-conditions a target space 1 as shown in FIG. The target space 1 is, for example, the internal space of one room. The air conditioner 10 is installed on the wall surface or ceiling surface of the room related to the target space 1 . In the configuration example described here, the air conditioner 10 is installed on the ceiling surface.

The air conditioner 10 is a device that performs air conditioning within the target space 1 by adjusting the temperature of the air within the target space 1 . The air conditioner 10 is capable of air conditioning operation including one or both of cooling operation and heating operation. Also, the air conditioner 10 may be capable of performing one or more of dehumidifying operation, humidifying operation, and blowing operation. The air conditioner 10 supplies the target space 1 with air whose temperature is controlled based on a set temperature set by operating a remote controller or the like (not shown). Note that FIG. 1 omits illustration of a configuration necessary for realizing an air-conditioning operation including a refrigeration cycle.

An air conditioner 10 of this embodiment is an indoor unit of an air conditioner. An air conditioner 10, which is an indoor unit, is connected to an outdoor unit (not shown) of the air conditioner. The air conditioner 10 has a housing 11 . A suction port 12 and a blowout port 13 are formed on the lower surface of the housing 11 . The suction port 12 is an opening for taking air into the housing 11 from the outside. The air outlet 13 is an opening for discharging air from the inside of the housing 11 to the outside. The suction port 12 is arranged in the central portion of the bottom surface of the housing 11 . The blowout port 13 is arranged around the suction port 12 on the lower surface of the housing 11 .

An air passage is formed inside the housing 11 to communicate with the air inlet 12 and the air outlet 13 . A blower fan and a heat exchanger (not shown) are provided in the air passage in the housing 11 . A blower fan is installed. The blower fan is for generating an airflow in the aforementioned air path from the suction port 12 toward the blowout port 13 . The heat exchanger heats or cools the air flowing through the air passage by exchanging heat with the air flowing through the air passage. Whether the air is heated or cooled depends on whether the air conditioner 10 is in heating operation or cooling operation.

A louver 14 is provided at the outlet 13 . The louver 14 is for adjusting the blowing angle of air blown from the blower port 13 . When the blower fan operates, an air flow is generated in the aforementioned air passage from the suction port 12 toward the blowout port 13 , and the air is sucked through the suction port 12 . The air sucked from the suction port 12 becomes an air flow passing through the air passage inside the housing 11 and is blown out from the blowout port 13 . At this time, the louver 14 adjusts the direction of the air blown from the outlet 13 , that is, the blowing direction.

The target space 1 is a space for the worker 3 to work. The target space may be, for example, a space within a conference room, a space within a workroom, or a space within an office. “Work” may be labor that mainly uses the brain, or labor that mainly uses the movement of the body. The target space is a space in which a plurality of workers 3 can work. A seat on which each worker 3 sits corresponds to a personal work space 2. - 特許庁In the illustrated example, personal computers 4 used by workers 3 are arranged in individual work spaces 2 .

Individual working spaces 2 of individual workers 3 working in the target space 1 are individually irradiated with light. In the illustrated example, individual lighting devices 21 are installed on the desks of the workers 3 placed in the individual work spaces 2, respectively. The personal lighting devices 21 are provided in the same number as the personal work spaces 2 corresponding to the respective personal work spaces 2 . The personal lighting devices 21 irradiate light into the corresponding personal work spaces 2 .

The personal lighting device 21 can change the color temperature of the light radiated into the personal work space 2 . That is, the personal lighting device 21 can irradiate the personal work space 2 with the light of the first color temperature and the light of the second color temperature. The second color temperature is a color temperature higher than the first color temperature. The first color temperature is whitish light, for example, about 4000K to 5000K. The second color temperature is cool color light, for example, about 6000K to 7000K. Each personal lighting device 21 can individually change the color temperature of the light illuminating the corresponding personal work space 2 .

Cool color light is, for example, visible light in blue colors such as bluish green, blue, and violet. On the other hand, warm color light is visible light such as red, orange, yellow, or so-called electric light. The personal lighting device 21 includes a first light source that emits white light of a first color temperature and a second light source that emits cool light of a second color temperature. The first light source and the second light source are LEDs (light emitting diodes), for example. The personal lighting device 21 can turn on/off the first light source and the second light source independently of each other. In addition, the individual lighting devices 21 may individually change the illuminance (intensity) of the light to illuminate the interior of the personal work space 2 corresponding thereto.

In the illustrated configuration example, an overall illumination device 22 is provided on the ceiling surface of the room related to the target space 1 . The general lighting device 22 can irradiate the entire object space 1 with light. The overall lighting device 22 emits white light, for example. The color temperature of the light emitted from the general lighting device 22 is, for example, about 4000K to 5000K.

The environment control system according to this embodiment includes a biometric information sensor 30 . The biometric information sensor 30 is a sensor that detects biometric information of the worker 3 in the target space 1 . Here, the biological information sensor 30 is a surface temperature sensor that detects the surface temperature of the object to be detected within the target space 1 . The surface temperature sensor detects the surface temperature of the worker 3 as biological information of the worker 3 in the target space 1 . In the illustrated configuration example, the surface temperature sensor, which is the biological information sensor 30 , is provided on the bottom surface of the housing 11 of the air conditioner 10 .

A surface temperature sensor periodically detects the surface temperature of an object to be detected in the work space. The surface temperature sensor may be configured, for example, with an infrared sensor having a plurality of thermopiles (not shown). The surface temperature sensor may scan the temperature detection range by rotationally driving the infrared sensor, and generate thermal image data of the temperature detection range using the output of the infrared sensor. Objects to be detected within the temperature detection range may include, for example, the human body of the worker 3, the floor surface, and the wall surface. By using the surface temperature sensor, it is possible to determine the presence or absence of the worker 3 in the work space, and if the worker 3 exists in the work space, the position of the worker 3 can be specified and the position of the worker 3 can be determined. It becomes possible to detect body surface temperature. A surface temperature sensor can detect each of a plurality of workers 3 in the target space 1 .

The surface temperature sensor may be provided with an SOI (Silicon on Insulator) diode type uncooled infrared image sensor instead of the thermopile. In the case of the SOI diode method, since a silicon diode is used in the sensor section, it can be manufactured using only a silicon semiconductor line, and there is an advantage that the production cost is low.

With such a configuration, the surface temperature sensor scans the aforementioned target range and acquires the surface temperature distribution within the range in a non-contact manner. By processing the detection result of the surface temperature sensor, that is, the surface temperature distribution data acquired by the surface temperature sensor with the control device 40 or the like, which will be described later, for example, from the temperature difference with the background, the person (worker 3) in the room can be detected. It is possible to detect the presence or absence of a heat source and its position, the surface skin temperature of the human body, the parts of the human body (exposed and non-exposed parts of the skin, the head, etc.).

Also, it is possible to obtain the sensible temperature of the people in the room based on the detection result of the surface temperature sensor. In this case, the more exposed the skin of the human body, the easier it is to detect the sensible temperature. Furthermore, the number of workers 3 in the target space 1 can also be detected by processing the surface temperature distribution data acquired by the surface temperature sensor with the control device 40 or the like, which will be described later. Furthermore, the entry and exit of the workers 3 in the target space 1 can also be detected from changes in the number of workers 3 in the target space 1 .

Next, the configuration of the environment control system according to this embodiment will be described with reference to FIG. 2 as well. The air conditioner 10 and the personal lighting device 21 provided in the target space 1 are devices to be controlled by the environmental control system. The environment control system of this embodiment includes a control device 40 . The control device 40 is configured by a processing circuit including, for example, a microcomputer. If the control device 40 has a microcomputer, the control device 40 has a processor and memory (not shown). The memory stores a control program. The processor reads and executes programs stored in memory.

When the processor executes the control program, the control device 40 executes preset processing to control the operations of the air conditioner 10, the personal lighting device 21, and the general lighting device 22, which are devices to be controlled. Control. In particular, when the processor executes programs stored in the memory, the functions of the human position determination unit 41, the thermal sensation determination unit 42, and the device control unit 43, which will be described later, are realized.

Note that the processing circuit that implements the functions of the control device 40 may be formed as dedicated hardware, for example. The processing circuitry may also be partly formed as dedicated hardware and further comprise a processor and memory. A processing circuit, part of which is at least one piece of dedicated hardware, can be, for example, a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.

The processor is also called a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. The memory includes, for example, non-volatile or volatile semiconductor memories such as RAM, ROM, flash memory, EPROM and EEPROM, or magnetic disks, flexible disks, optical disks, compact disks, mini-disks and DVDs.

If the processing circuitry comprises at least one processor and at least one memory, the functions of controller 40 are implemented in software, firmware, or a combination of software and firmware. Software and firmware are written as programs and stored in memory. As described above, the processor reads out and executes the programs stored in the memory, thereby executing preset processes and realizing the functions of the control device 40 .

Thus, processing circuitry may implement the functionality of controller 40 in hardware, software, firmware, or a combination thereof. Note that the air conditioner 10 , the personal lighting device 21 and the overall lighting device 22 are not limited to a configuration in which the operations are controlled by a single control device 40 . The operation of the air conditioner 10, the personal lighting device 21, and the general lighting device 22 may be controlled by cooperation of a plurality of devices.

The control device 40 includes a human position determination section 41 , a thermal sensation determination section 42 and a device control section 43 . The human position determination unit 41 detects the position of a person in the target space 1 using the detection result of the biological information sensor 30 such as a surface temperature sensor. The presence or absence of a person in each personal work space 2 can be determined using the detection result of the person position determination unit 41 . Note that the human position determining unit 41 may determine the human position using a camera or the like instead of the surface temperature sensor.

The thermal sensation determination unit 42 determines the thermal sensation of the worker 3 based on the biological information of the worker 3 obtained using the biological information sensor 30 such as a surface temperature sensor. The biological information sensor 30 and the thermal sensation determination unit 42 according to this embodiment constitute thermal sensation detection means for detecting the thermal sensation of each worker 3 working in the target space 1 .

Here, the thermal sensation of the worker 3 is specifically evaluated in five stages, for example, hot, slightly hot, neutral, slightly cold, and cold. The thermal sensation of the worker 3 is determined using at least one of the surface temperature of the worker 3 and the temperature of the air in the target space 1, that is, the room temperature. When using the room temperature in the target space 1 to determine the thermal sensation of the worker 3 , the environment control system includes a temperature sensor that detects the room temperature in the target space 1 .

When determining the thermal sensation of the worker 3 using the surface temperature of the worker 3, for example, when the decrease in the surface temperature of the worker 3 continues for a predetermined time or longer, the worker 3 Let the thermal sensation be “cold”. Also, it is determined whether the thermal sensation is “cold” or “slightly cold” according to the surface temperature drop duration or the surface temperature drop amount at this time. In this case, when the duration of decrease is longer than the reference, it is determined as "cold", and when it is shorter than the standard, it is determined as "slightly cold". Also, when the amount of decrease is greater than the standard, it is defined as "cold", and when it is less than the standard, it is defined as "slightly cold".

Then, when the rise in the surface temperature of the worker 3 continues for a predetermined time or longer, the thermal sensation of the worker 3 is set as "hot". Also, it is determined whether the thermal sensation is “hot” or “slightly hot” according to the surface temperature rise duration or the surface temperature rise amount at this time. In this case, when the rising duration is longer than the reference, it is judged as “hot”, and when it is shorter than the reference, it is judged as “slightly hot”. Also, when the amount of increase is greater than the standard, it is defined as "hot", and when it is less than the standard, it is defined as "slightly hot". Furthermore, if the difference between the surface temperature of the head of the worker 3 and the surface temperature of the hands and feet is equal to or greater than a preset reference value, the thermal sensation of the worker 3 is estimated to be "hot" or "cold." can also

Next, when determining the thermal sensation of the worker 3 using the temperature of the air in the target space 1, that is, the room temperature, for example, the difference between the room temperature and the temperature near the worker 3 is equal to or greater than a preset reference value. If so, it is conceivable to estimate the thermal sensation of the worker 3 as "hot" or "cold". In this case, specifically, for example, if the difference between the room temperature and the temperature near the worker 3 is 3° C. or more, the thermal sensation of the worker 3 is determined to be “hot” or “cold”. Also, if the difference between the room temperature and the temperature in the vicinity of the worker 3 is within 1° C., the thermal sensation of the worker 3 is determined to be “neutral”. As the temperature near the worker 3, it is conceivable to use the floor surface temperature detected by the surface temperature sensor, the detection result of the thermometer of the wearable sensor worn by the worker 3, or the like. Further, a room temperature sensor may be provided for each personal work space 2 .

Furthermore, the biological information sensor 30 acquires information on the heartbeat of the worker 3 (heart rate, electrocardiogram, pulse wave, LF/HF (low frequency component/high frequency component), etc.), information on the amount of activity of the worker 3, and the like. However, the thermal sensation determination unit 42 may utilize the acquired biological information to determine the thermal sensation of the worker. In addition, the worker 3 inputs the thermal sensation using, for example, the remote control of the air conditioner 10, the personal computer 4, the smartphone, the tablet terminal, etc., and the thermal sensation determination unit 42 determines the content of the input thermal sensation declaration. It may be used to determine the thermal sensation of the worker. At this time, for example, PMV (Predicted Mean Vote) may be used.

The biological information sensor 30 as a thermal sensation detection means may be installed at a location touched by the worker 3 working in the target space 1 . Specifically, in the configuration example of FIG. By doing so, biometric information detection can be performed while the biometric information sensor 30 is in contact with the worker 3, and more accurate biometric information can be obtained.

The device control unit 43 is control means for controlling the operations of the air conditioner 10 , the personal lighting device 21 and the general lighting device 22 . The device control unit 43 controls the operations of the air conditioner 10 , the personal lighting device 21 and the general lighting device 22 using the detection results of the human position determination unit 41 and the thermal sensation determination unit 42 . The device control unit 43 controls the operation of the air conditioner 10 by controlling the operation of the blower fan of the air conditioner 10, the louver 14, the compressor that constitutes the refrigeration cycle, and the like. The device control unit 43 controls the operation of the air conditioner 10 so that air whose temperature is adjusted based on the set temperature is supplied from the air outlet 13 into the target space 1 .

The device control unit 43 controls the operation of the personal lighting device 21 by controlling the lighting state of the light source of each personal lighting device 21, the color temperature of the emitted light, the intensity of the emitted light, and the like. Further, the device control unit 43 controls the operation of the general lighting device 22 by controlling the lighting state of the light source of the general lighting device 22 .

The device control unit 43 can execute thermal sensation adjustment control. In the thermal sensation adjustment control, the device control unit 43 first determines the number of workers 3 whose thermal sensation is colder than neutral, detected by the thermal sensation determination unit 42, and The detected thermal sensation is compared with the number of workers 3 who are hotter than neutral. Then, when the number of workers 3 whose thermal sensation is colder than neutral is greater than the number of workers 3 whose thermal sensation is hotter than neutral, the device control unit 43 performs the following: Thus, the operation of the personal lighting device 21 and the air conditioner 10 is controlled. That is, the device control unit 43 causes the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 whose thermal sensation is on the colder side and neutral than the neutral temperature to emit light of the first color temperature. As a result, the personal lighting device 21 irradiates the personal work space 2 of the worker 3 where the thermal sensation is colder than the neutral one and the neutral light with the first color temperature, that is, white light. In addition, the device control unit 43 irradiates light of the second color temperature from the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 whose thermal sensation is hotter than neutral. As a result, the individual work space 2 of the worker 3 whose thermal sensation is on the hotter side than the neutral one is illuminated with light of the second color temperature from the individual lighting device 21, that is, light of a cold color. Then, the device control unit 43 changes the set temperature of the air conditioner 10 to a temperature higher than the current temperature, and controls the operation of the air conditioner 10 based on the changed set temperature.

In the environment control system configured as described above, if there are more workers 3 on the cold side than workers 3 on the hot side, the thermal sensation (cold) of the larger number of workers Accordingly, the set temperature of the air conditioner 10 can be increased to create an indoor air environment that is thermally comfortable for more people in the target space 1. - 特許庁At this time, the color temperature of the light emitted from the personal lighting device 21 of the worker 3 who has a smaller number of workers 3 and who has a thermal sensation (hot) is increased. Cold color light with a high color temperature has the effect of lowering the sensible temperature of a person and shifting the thermal sensation of the person to the cold side. Therefore, the sensible temperature of the worker 3 can be visually lowered, and the thermal comfort felt by the worker 3 can be improved. In other words, by changing the color temperature of the light emitted from the personal lighting device 21, the worker 3, who has a minority of thermal sensations, can experience a feeling similar to that of the majority, and then the thermal sensation of the majority. The air conditioner 10 is controlled according to the cold feeling. Therefore, in the target space, it is possible to perform air conditioning control suitable for more people while suppressing deterioration in thermal comfort for some people who have thermal sensations different from those of most people.

Next, an operation example of the environment control system configured as described above will be described with reference to the flowchart of FIG. When the environment control system starts operating, the device control unit 43 of the control device 40 initially operates the air conditioner 10 , the personal lighting device 21 and the general lighting device 22 . In the initial operation, the device control unit 43, for example, causes the air conditioner 10 to perform cooling operation or heating operation at the set temperature. In addition, the device control unit 43, for example, turns on the general lighting device 22 and makes the personal lighting device 21 stand by in a state of being turned off. After step S10, the control device 40 next performs the process of step S11.

In step S11, the device control section 43 confirms the detection result of the human position determination section 41, and determines whether or not there is a worker 3, that is, a personal work space 2 in which a person is present. If there is no personal work space 2 where a person is present, the control device 40 returns to the process of step S10 and continues the operation. On the other hand, if there is a personal work space 2 in which a person is present, the control device 40 next performs the process of step S12.

In step S12, the device control unit 43 causes the personal lighting device 21 corresponding to the personal work space 2 where the person is present to emit light of the first color temperature. In subsequent step S<b>13 , the human position determination unit 41 detects the position of the worker 3 within the target space 1 . Also, the thermal sensation determination unit 42 detects the thermal sensation of the worker 3 in the target space 1 . After step S13, the control device 40 next performs the process of step S14.

In step S14, the device control unit 43 acquires the thermal sensation of the worker 3 in each individual work space 2 using the position and thermal sensation of the worker 3 detected in step S13. In subsequent step S15, the device control unit 43 uses the thermal sensation of the worker 3 in the personal work space 2 acquired in step S14 to determine that the thermal sensation is on the colder side than the neutral. The number of workers 3 is compared with the number of workers 3 whose thermal sensation is hotter than neutral. Then, the device control unit 43 determines whether or not the number of workers 3 whose thermal sensation is colder than neutral is greater than the number of workers 3 whose thermal sensation is hotter than neutral. do. If the number of people on the cold side of the thermal sensation is not greater than the number of people on the hot side, the control device 40 next performs the process of step S16.

In step S<b>16 , the control device 40 does not change the control, and continues the current operation of the air conditioner 10 and the personal lighting device 21 . After step S16, the control device 40 next performs the process of step S19.

On the other hand, if it is determined in step S15 that the number of people on the cold side is not greater than the number of people on the hot side, the control device 40 next performs the process of step S17. In step S17, the device control unit 43 causes the personal lighting device 21 corresponding to the personal work space 2 of the subject to emit light of the second color temperature. The subject here is the worker 3 whose thermal sensation is hotter than neutral. In subsequent step S18, the device control unit 43 changes the set temperature of the air conditioner 10 to a temperature higher than the current temperature, and controls the operation of the air conditioner 10 based on the changed set temperature. After step S18, the control device 40 next performs the process of step S19.

In step S19, the device control section 43 confirms the detection result of the human position determination section 41, and determines whether or not there is a worker 3, that is, a personal work space 2 in which a person is present. If there is a personal work space 2 where a person is present, the control device 40 returns to the process of step S13 and continues the operation. On the other hand, if there are no more personal work spaces 2 in which people are present, the process proceeds to step S20, and the series of operations ends.

In the environment control system according to this embodiment, the personal lighting device 21 may further irradiate the personal work space 2 with light of a third color temperature. The third color temperature is a color temperature lower than the first color temperature. The third color temperature is warm color light, for example, about 3000K. In this case, the personal lighting device 21 includes, in addition to the first and second light sources described above, a third light source that emits warm color light having a third color temperature. The third light source is, for example, an LED (light emitting diode). The personal lighting device 21 can turn on/off the first light source, the second light source and the third light source independently of each other.

In this case, in the above-described thermal sensation adjustment control, the device control unit 43 determines that the number of workers 3 whose thermal sensation is hotter than neutral is the number of workers 3 whose thermal sensation is colder than neutral. , the operations of the personal lighting device 21 and the air conditioner 10 are controlled as follows. That is, the device control unit 43 causes the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 whose thermal sensation is on the hotter side and neutral than the neutral to emit light of the first color temperature. As a result, the personal lighting device 21 irradiates the personal work space 2 of the worker 3 where the thermal sensation is warmer than the neutral one and the personal work space 2 of the worker 3 with the light of the first color temperature, that is, white light. Further, the device control unit 43 causes the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 whose thermal sensation is on the colder side than the neutral temperature to emit light of the third color temperature. As a result, the personal lighting device 21 irradiates the personal work space 2 of the worker 3 whose thermal sensation is colder than the neutral one with the third color temperature, that is, warm color light. Then, the device control unit 43 changes the set temperature of the air conditioner 10 to a temperature lower than the current temperature, and controls the operation of the air conditioner 10 based on the changed set temperature. In this case, the personal lighting device 21 may be capable of irradiating only the light of the first color temperature and the third color temperature without irradiating the light of the second color temperature.

By doing so, if there are more workers 3 with hot thermal sensations than workers 3 with cold thermal sensations, the air conditioning is adjusted according to the thermal sensation (hot) of the larger number of workers 3. By lowering the set temperature of the device 10, it is possible to create an indoor air environment that is thermally comfortable for more people in the target space 1. At this time, the color temperature of the light emitted from the personal lighting device 21 of the worker 3 who has a smaller number of workers 3 and who has a thermal sensation (cold) is lowered. Warm-colored light with a low color temperature has the effect of lowering the sensible temperature of a person and shifting the thermal sensation of the person to the hot side. Therefore, the sensible temperature of the worker 3 can be visually increased, and the thermal comfort felt by the worker 3 can be improved. In other words, by changing the color temperature of the light emitted from the personal lighting device 21, the worker 3, who has a minority of thermal sensations, can experience a feeling similar to that of the majority, and then the thermal sensation of the majority. The air conditioner 10 is controlled according to the cold feeling. Therefore, in the target space, it is possible to perform air conditioning control suitable for more people while suppressing deterioration in thermal comfort for some people who have thermal sensations different from those of most people.

The personal lighting device 21 irradiates light by changing the current value input to the above-described first light source and second light source in accordance with the control signal transmitted from the control device 40 . At this time, the input current value to the first light source should be larger than the input current value to the second light source. That is, the personal lighting device 21 reduces the input current value to the light source when emitting light of the first color temperature from the input current value to the light source when emitting light of the second color temperature. should also be increased. In general, when an LED (light emitting diode) is used as a light source, a light source with a low color temperature has lower luminous efficiency than a light source with a high color temperature. Therefore, by making the input current value to the first light source with a low color temperature larger than the input current value to the second light source, the color temperature of the light emitted from the personal lighting device 21 is changed from the second color temperature to the first color temperature. When switching to the color temperature, it is possible to prevent the brightness of the desk surface from being lowered and the visibility to be lowered.

When changing the color temperature of the light emitted from the personal lighting device 21, the color temperature may be gradually changed from the color temperature before change to the color temperature after change over a certain period of time. By doing so, it is possible to ensure time for the eyes of the worker 3 to adapt to the surrounding lighting environment and the like.

In addition, the effect of visually adjusting the body temperature by changing the color temperature of the lighting diminishes over time. Therefore, the device control unit 43 terminates the thermal sensation adjustment control after a preset time, for example, about 30 minutes to 1 hour, has elapsed since execution of the thermal sensation adjustment control was started. good. After completing the thermal sensation adjustment control, the device control unit 43 may control the air conditioner 10 and the personal lighting device 21 by the workability improvement support control.

The workability improvement support control assists the workability improvement of the worker 3 in the target space 1 by controlling the environment in the target space 1 . In the workability improvement support control, for example, the device control unit 43 causes the personal lighting device 21 to irradiate cold light of the second color temperature. Further, the device control section 43 may increase the input current value to the light source of the personal lighting device 21 to increase the illuminance of the light emitted from the personal lighting device 21 . Furthermore, the device control unit 43 may direct the airflow direction of the air conditioner 10 toward the worker 3 to give the worker 3 a stimulus by the wind. By doing so, the thermal comfort of the worker 3 is improved when the worker 3 starts work, and after a while after the start of work, the concentration of the worker 3 is improved and workability is improved. can help improve

In the environment control system according to this embodiment, the device control unit 43 adjusts the illuminance of the light emitted from the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 according to the age of the worker 3. You can change it. In this case, the environment control system comprises age detection means for detecting the age of each worker. The age detection means detects the age of the person in the target space 1 by means of an age determination section provided in the control device 40 using the detection result of the biological information sensor 30 such as a surface temperature sensor. Alternatively, for example, an entry/exit management system for the room in which the target space 1 is provided may be used as the age detection means. In this case, the entrance/exit management system performs personal authentication for the worker 3 who enters the target space 1, and identifies the worker 3 as an individual. Then, the age of each of the three workers is registered in advance, and the age of the worker 3 is specified from the result of personal authentication by the entrance/exit management system.

Data in which the age of the worker 3 and the illuminance of the light emitted from the personal lighting device 21 are associated with each other are stored in the control device 40 in advance. The device control unit 43 refers to this data and adjusts the illuminance of the light emitted from the personal lighting device 21 corresponding to the personal work space 2 of the worker 3 according to the age of the worker 3 detected by the age detection means. to change In this case, the device control unit 43 increases the illuminance as the worker 3 ages. For example, if the worker 3 is an elderly person (for example, 65 years old or older), the illuminance is set to about twice that for a young person (for example, 15 to 34 years old). At this time, it is preferable to change the illuminance of the light of the second color temperature emitted from the personal lighting device 21 according to the age of the worker 3 .

Since the sensitivity of the human eye decreases with age, it becomes more difficult for elderly people to see things in the same brightness compared to young people. In addition, since elderly people have a lower relative luminosity factor for short wavelengths than young people, it is difficult for them to perceive light with a high color temperature. For this reason, in elderly people, the sensible temperature adjustment effect of high color temperature light through vision is smaller than in young people. Therefore, by increasing the illuminance of the light emitted from the personal lighting device 21 according to the age of the worker 3, the visibility is improved regardless of the age, and the sensible temperature is adjusted through the sense of sight. It is possible to improve comfort.

1 Target Space 2 Personal Work Space 3 Worker 4 Personal Computer 10 Air Conditioner 11 Case 12 Suction Port 13 Air Vent 14 Louver 21 Personal Lighting Device 22 Overall Lighting Device 30 Biological Information Sensor 40 Control Device 41 Human Position Determination Unit 42 Thermal sensation determination unit 43 Device control unit

Claims (5)

an air conditioner that supplies air temperature-controlled based on the set temperature in the target space;
a personal lighting device for illuminating a personal working space of each worker working in the target space;
a thermal sensation detection means for detecting the thermal sensation of each worker;
a control means for controlling the air conditioner and the personal lighting device;
The personal lighting devices are provided in the same number as the personal work spaces corresponding to the individual work spaces, and each of the personal lighting devices emits light of a first color temperature and light of a second color temperature higher than the first color temperature. can be irradiated,
The control means determines that the thermal sensation is neutral when the number of workers whose thermal sensation is colder than neutral is greater than the number of workers whose thermal sensation is hotter than neutral. Light of the first color temperature is emitted from the personal lighting device corresponding to the personal work space of the worker that is on the colder side and neutral, and the thermal sensation is on the hotter side than the neutral An environment control system that executes thermal sensation adjustment control that illuminates light of the second color temperature from the personal lighting device corresponding to the personal work space of the worker and raises the set temperature. each of the personal lighting devices is capable of further emitting light of a third color temperature lower than the first color temperature;
In the thermal sensation adjustment control, the control means is configured such that the number of workers whose thermal sensation is hotter than neutral is greater than the number of workers whose thermal sensation is colder than neutral. In this case, light of the first color temperature is emitted from the personal lighting device corresponding to the personal work space of the worker whose thermal sensation is hotter than neutral, and the thermal sensation is hotter than neutral. 2. The environment control system according to claim 1, wherein the personal lighting device corresponding to the personal work space of the worker on the cold side irradiates the light of the third color temperature, and the set temperature is lowered. After a preset time elapses from the start of execution of the thermal sensation adjustment control, the control means performs workability improvement support control to support workability improvement of the worker in the target space. 3. An environmental control system according to claim 1 or 2, wherein the climate control system controls the air conditioner and the personal lighting device. In the personal lighting device, the input current value to the light source when emitting the light of the first color temperature is higher than the input current value to the light source when emitting the light of the second color temperature. 4. An environmental control system according to any one of claims 1 to 3, wherein the . 5. The controller according to any one of claims 1 to 4, wherein the control means changes the illuminance of the light emitted from the personal lighting device corresponding to the personal work space of the worker according to the age of the worker. The environmental control system described in .

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