JP2003031379A - Lighting control method and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting control method and a lighting system improving the efficiency of mental work by considering the awakening degree and relaxation degree of an office worker, with the lapse of time of a day. SOLUTION: The color temperature of a prescribed position is raised with the lapse of time from around 7:30 to around 12:00 and lowered with the lapse of time from around 12:00 to around 17:30. For example, the color temperature of the prescribed position is set into the vicinity of 4700 K around 7:30 a.m., into the vicinity of 6000 K around noon and into the vicinity of 5000 K around 17:30 p.m. The color temperature of the prescribed position is raised with the lapse of time in the morning, and the color temperature of the prescribed position is lowered with the lapse of time in the afternoon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting control method and a lighting system for improving the efficiency of mental work.

[0002]

2. Description of the Related Art Recent business forms are in an era where many people are working in offices due to rapid progress in softwareization.
The majority of people spend most of the day in the office. Therefore, the importance of the office environment as a place where people live has been recognized. Therefore, it is important to create an environment in which employees can comfortably engage in office work, but according to an office survey conducted in 1999 by the New Office Promotion Council of Japan, which was commissioned by the Ministry of International Trade and Industry, the office worker's office Satisfaction rate was 28.0% for satisfaction and 33.8% for dissatisfaction, which was about 6% higher than satisfaction for satisfaction, and there is room for improvement in the current office environment for office workers. Is shown. Although there are various requirements for offices, an office that allows office workers to work efficiently can be defined as the optimal office. In other words, the office needs to be the best place for intellectual production. According to the survey, office workers answered whether there is room for productivity improvement in the current offices. About 60% of people answered that they think there is room for productivity improvement. The results show that the current office environment is not the optimal place for intellectual productivity. Factors that should be considered as an environment for improving intellectual productivity are the degree of relaxation, the degree of alertness, and the degree of fatigue. I can't do proper work when I'm sleepy, and if I work for a long time, I get tired. It is also important to be relaxed and want work.
Proper consideration of all of these factors will improve intellectual productivity.

Here, there is a conventional technique in which the awakening effect is shown by changing the brightness and color of illumination light during the day. For example, in the lighting system disclosed in JP-A-2000-252084, the high illuminance light is emitted during the first time period from morning until almost evening, and the second time period from evening to bedtime is higher than the maximum value of illuminance in the first time zone. Also produces medium-illuminance light with a low average illuminance on the time axis, and low-illuminance light with an average illuminance that is lower than the maximum value of the illuminance in the second time period during the third time period from after going to sleep until morning. By controlling the light in the 1st time zone to have high color temperature light and the light in the 2nd time zone to have low color temperature light, a light environment preferable for human biorhythm is generated throughout the day,
Optimize the rhythm of awakening and sleep during the day. In addition, JP 20
In the lighting control method and the lighting system of 00-294388, human beings are made to use lighting that includes a large amount of low color temperature light during the quiescent period of biological rhythms, and lighting that includes a large amount of high color temperature light during the activation period. The purpose is to obtain an appropriate light environment according to the biological rhythm of. Further, there is an indoor lighting system disclosed in Japanese Patent Laid-Open No. 5-54976 for relaxing. This motivates the lighting environment to change and relax by changing the indoor color temperature according to the outdoor natural environment.

[0004]

[Problems to be Solved by the Invention] However, Japanese Patent Laid-Open No. 2000-252
The 084 lighting system, the lighting control method and the lighting system of Japanese Patent Laid-Open No. 2000-294388 have the main effect of adjusting the biological rhythm of a person by varying the illuminance or the color temperature during the day, and the purpose is to improve mental work. Not.
The adjustment of the biological rhythm is to make the living body awake and sleep rhythm by awaking during the active period of the biological body and calming the biological body during the calming period. However, in mental work, if the degree of arousal decreases due to the living body moving toward sedation, it is necessary to increase the degree of awakening in a manner that is contrary to the biological rhythm in order to prevent a decrease in workability. I won't. Thus, adjustment of biological rhythm does not always lead to improvement of mental work. In addition,
In the indoor lighting system of 5-54976, mood change and relaxation are the main effects, but awakening factors must also be considered in order to improve mental workability. In addition, conventionally, office lighting has a high color temperature and rest room lighting has a low color temperature in many places. A high color temperature can activate a living body, and a low color temperature can calm a living body. Since it has been shown by past studies, the lighting space is suitable for the location. However, there are many cases where it is not possible to take a break for the convenience of work, and it is difficult to work and take a break conveniently at a desired time for the living body.

From the above, until now, there has been no lighting method for improving the efficiency of mental work by considering the awakening degree and the relaxation degree of the office worker over the time of day.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lighting control method and a lighting system that improve the efficiency of mental work by considering the awakening degree and the relaxation degree of an office worker over the course of a day. .

[0007]

According to the lighting control method of claim 1, the color temperature at a predetermined position is increased with time from about 7:30 to about 12:00, and from about 12:00 to about 17:30. It is characterized by decreasing with time.

Assuming office work, the relationship between work efficiency and time variation of color temperature was evaluated. The test subjects were eight adult males with no impairment in sleep / wakefulness. Subjects were allowed to sleep between 23:30 and 06:30 for one week prior to the experiment, and were prohibited from taking a nap, drinking, smoking, and intense luck. This was done to remove external factors affecting the experimental data. The experiment method was to keep the illumination on the desk horizontal plane at 900 lx and the measurement time from 7:30 to 17:30.
During this period, the subjects were allowed to freely select the color temperature at which the work efficiency would increase every 10 minutes. The color temperature selection method is 2900K-1000 using a device that can adjust the color temperature of the ceiling-mounted fluorescent lamp by operating the keyboard on the desk.
Adjusted in the 0K range. From the obtained color temperature data, a regression analysis was performed using time (0 o'clock as 0 and 24 o'clock as 1) as the independent variable and the selected color temperature value as the dependent variable. The highest and the analysis of variance was significant. Also, based on the above regression equation, we consider that the range in which 95% of all the data is included is the allowable range of color temperature time variation that is optimal for work,
(32321t ³ -75703t ² + 51665t-5023.8) /1.55 ≤ Y ≤ (32321
t ³ -75703t ² + 51665t-5023.8) * 1. 55, (in the formula, Y: color temperature, t: time data with 0 o'clock as 0 and 24:00 as 1, 0.31)
25 ≤ t ≤ 0. 729) is the color temperature time variation allowable range, and Y = a *
(32321t ³ -75703t ² + 51665t-5023.8), (in the formula, Y: color temperature, t: time data where 0 o'clock is 0 and 24 o'clock is 1; 0.3125
≤t ≤0.729, 1 / 1.55 ≤a ≤1.55) is the color temperature time variation formula. FIG. 13: is explanatory drawing of the experimental result of the relationship of the color temperature of illumination and time which improve the mental work regarding this invention. 3 is the upper limit expression Y = (32321t ³ -75703t ² +51665 of the permissible range of the color temperature time variation which is optimum for the mental work of the present invention.
t-5023.8) * 1.55, (where, Y: color temperature, t: 0 at 0,
Time data where 12:00 is 24 o'clock, 0.3125 ≤ t ≤ 0.729). 4 is an optimum color temperature time variation formula Y = 32321t ³ -75703t ² + 51665t-5023.8 for the work of the present invention, (wherein Y: color temperature, t: time when 0 o'clock is 0 and 24 o'clock is 1) Data, 0.31
25 ≦ t ≦ 0.729). 5 is the allowable range lower limit expression Y = (32321t ³ -757) of the color temperature time variation which is optimum for the workability of the present invention.
03t ² + 51665t-5023.8) / 1. 55, (in the formula, Y: color temperature, t
: Time data where 0 o'clock is 0 and 24 o'clock is 1, 0.3125 ≤ t
≦ 0.729).

In addition, in the same experiment, as shown in FIG.
As a result of subjectively evaluating what kind of effect the subject has brought about in each time zone by the color temperature time varying illumination shown in FIG. 14, as shown in FIG. 14 and FIG. It was different.
For example, the awakening effect is high during the time period from 7:30 to 8:30 (FIG. 15), and the relaxing effect is high during the time period from 11:30 to 12:30 (FIG. 14). From previous studies, it has been shown that the color temperature of lighting affects the arousal level and the relaxation level of a person. Therefore, the color temperature time variation in FIG. 13 requires the awakening effect and the relaxing effect for the worker. It can be seen that it fluctuates to bring about the effect in the time zone.

Therefore, an illumination space having a constant color temperature of 5000K, which is a type of conventional general office lighting, and a color temperature time variation curve Y = 32321t ³ -75703t ² + 51665t-5023.8 shown in FIG.
, (Where Y is the color temperature, t is the time data where 0 is 0 o'clock and 0 o'clock is 24 o'clock, and 0.3125 ≤ t ≤ 0.729), the psychological and physiological evaluation of the type that changes the color temperature of the lighting over one day It compared by. The test subjects were eight adult males with no impairment in sleep / wakefulness. One week before experiment, 23:30 for subjects
He slept at ~ 06:30 and banned naps, drinking, smoking and heavy luck. This was done to remove external factors affecting the experimental data. The experiment method is a horizontal illuminance of 900 l on a desk.
x was kept constant, and the measurement was performed for each condition during the measurement time of 7:30 to 17:30. The measurement items are EEG, alpha wave attenuation test (AAT), heart rate variability, blood pressure, rectal temperature, subjective evaluation (“sleepiness”, “calmness”, “relaxation”, “motivation”, “concentration”, “brightness” The eight items were “sa”, “comfort”, and “fatigue”. As a result, in the color temperature time variation type, subjective drowsiness was suppressed to be lower throughout the day (FIG. 16). In the physiological evaluation using EEG, α-waves appeared more frequently and β
Fewer waves appeared (Figure 17, Figure 18). From this, it can be seen that the degree of mental tension was small in the color temperature time variation type. Also, when evaluated by heart rate variability, in the afternoon hours, the HF component "0.15Hz-0.35H
z ”(reflecting parasympathetic nerve activity, indicating body relaxation), the color temperature time variation type is higher than the conventional type, and the LF component is“ 0.05 Hz to 0.15 Hz ”.
The LF / HF ratio (sympathetic nerve activity index, indicating body tension) was lower than that of the conventional type in the color temperature time variation type. From this fact, in the color temperature time variation type, human sympathetic nerve activity is suppressed to a lower level, and parasympathetic nerve activity is further promoted (FIGS. 19 and 2).
0), it has been shown that physiological tension is suppressed to a lower level. Further, when evaluated by blood pressure, the systolic blood pressure, the diastolic blood pressure, and the average blood pressure were lower in the color temperature time variation type in the afternoon time zone than in the conventional 5000K constant type of office lighting (FIG. 21). From this, it was found that the color temperature time variation type suppressed the vasomotor activity level and suppressed the physiological tension. Based on the above EEG, heart rate variability, and physiological evaluation based on blood pressure,
It was found that in the color temperature time variation type, physiological tension was suppressed to a low level, fatigue was low, and work could be performed. Further, as a result of adding up a one-digit number and evaluating the result of the task of discriminating whether the added value is odd or even, the result was good in the color temperature time variation type (FIG. 22).

From the above research results, according to this lighting control method, by using the lighting device as a lighting device for office space, the worker's arousal level and relaxation level are appropriately maintained, and the fatigue level is suppressed to a low level. As a result, it can be used as a method having an effect of improving work efficiency.

In the lighting control method according to the second aspect, the color temperature at a predetermined position is set to about 4700K at about 7:30 am, about 6000K at about 12:00 noon, and about 5000K at about 17:30 pm. However, the color temperature at the predetermined position is increased with time in the morning, and the color temperature at the predetermined position is decreased with time in the afternoon.

According to the illumination control method of the second aspect, there is the same effect as the first aspect.

In the lighting control method according to the ^third aspect, the color temperature at a predetermined position is Y = a * (32321t ³ -75703t ² + 51665t-5023.8),
(Wherein Y: color temperature, t: time data where 0 o'clock is 0 and 24 o'clock is 1, 0.3125 ≤ t ≤ 0.729, 1 / 1.55 ≤ a ≤ 1.55) .

According to the illumination control method of the third aspect, the same effect as that of the first aspect can be obtained.

According to a fourth aspect of the present invention, there is provided an illumination control method according to any one of the first to third aspects, wherein the lamp, the color temperature measuring sensor, and a color temperature difference between the sensor measured value and the target color temperature value are calculated. This is performed by an illumination system including a control unit that controls the lamp output so that the color temperature at a predetermined position reaches a target value based on the results of the calculation unit and the calculation unit.

According to the illumination control method of the fourth aspect, in the first, the second or the third aspect, by considering the influence of a disturbance factor such as natural light incident from an opening such as a window, a predetermined value can be obtained. There is an effect that the position can be accurately controlled to the target color temperature value.

An illumination control method according to a fifth aspect is the one according to the first aspect, the second aspect, or the third aspect, in which the task lighting apparatus and the ambient lighting apparatus installed in the same room are dimmed / color-controlled. .

According to the lighting control method of claim 5, when only the ambient lighting equipment is controlled by the method of claim 1 in the task and ambient lighting environment, the task area by the task lighting equipment and the ambient area by the ambient lighting equipment. When the ambient area is viewed from the state where the eyes are adapted to the lighting condition of the task area due to the difference in color temperature in the ambient area, or vice versa, it often becomes a visual burden,
It has the effect of eliminating the visual burden.

A lighting system according to a sixth aspect of the present invention automatically controls the color temperature of the luminaire by the luminaire whose color temperature can be adjusted and the lighting control method according to the first, second or third aspect. It is provided with a control unit for obtaining.

According to the illumination system of claim 6, the same effect as that of claim 1 can be obtained.

An illumination system according to claim 7 is the illumination system according to claim 6.
In the above, the control unit is a lamp, a color temperature measurement sensor, a calculation unit that calculates a color temperature difference between a sensor measurement value and a target color temperature value, and a lamp that adjusts the color temperature at a predetermined position to a target value based on the result of the calculation unit. It controls the output.

According to the lighting system of the seventh aspect, the same effect as that of the fourth aspect can be obtained.

The illumination system according to claim 8 is the illumination system according to claim 6.
In the above, the lighting device is a dimming / color-adjusting lighting device which uses two fluorescent lamps of different colors and changes the light color by controlling the output of only one of the fluorescent lamps.

According to the lighting system of the eighth aspect, the control device has one side as compared with the dimming / color-adjusting lighting device in which the color is varied by dimming at least two or more white fluorescent lamps of a plurality of colors. Since the function of dimming only the lamp is acceptable, there is an effect that the cost of the illuminating device which brings about the same effect as that of claim 1 can be reduced and the device can be downsized.

The illumination system according to claim 9 is the illumination system according to claim 6.
In the above, the lighting device uses at least two fluorescent lamps having different colors, and the control unit controls lighting ON / OFF of each lamp.

According to the illumination system of the ninth aspect, each lamp is turned on / off instead of the dimming control device.
This is a device for performing a simple control that only needs to be performed, and has the effect of reducing the cost of the lighting device and the device which bring about the same effect as that of claim 1.

A lighting system according to a tenth aspect of the present invention is the lighting system according to the sixth aspect, wherein the lighting fixture comprises a task lighting fixture and an unbind lighting fixture installed in the same room.

According to the illumination system of claim 10,
It has the same effect as the fifth aspect.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a method of controlling the color temperature of illumination. Around 7:30 pm from around 4700K to noon 6000
This is a color temperature control pattern in which the temperature is increased to around K and is decreased to around 5000K at about 17:30 with noon being the maximum value. Reference numeral 1 is a color temperature time variation curve under illumination light control according to the embodiment of the present invention.

FIG. 2 shows an embodiment of a lighting device that improves the work efficiency of an office worker. Any type of lighting fixture such as a ceiling-embedded lighting fixture 2, a ceiling type, a hanging type, a spotlight type, a desk light, or the like that can illuminate the periphery of a worker such as an office may be used.

FIG. 3 is a conceptual diagram of a system for controlling the light of the lighting device. The lighting system is characterized by including a lighting fixture whose color temperature can be adjusted and a control unit which can automatically control the color temperature of the lighting fixture.

FIG. 4 is an explanatory diagram of a method of controlling the lighting equipment. For lighting equipment, R (red), G (green), B (
A set of three (blue) straight fluorescent lamps is incorporated, and the color temperature control pattern of FIG. 1 is output by controlling the output of each of the R, G, and B lamps 10 to 12 by the control unit 13. In FIG. 4, a dimming signal is output from the control unit 13 to dimming each of the lamps 10 to 12.

FIG. 5 is an explanatory diagram of a method of controlling the lighting equipment. Incorporate a pair of 6700K high color temperature lamp 15 and 3000K low color temperature lamp 16 into each lamp 1
By controlling the outputs of 5 and 16 by the control unit 17, the color temperature control pattern of FIG. 1 is output. In FIG. 5, a dimming signal is output from the control unit 17 to dimming the lamps 15 and 16.

FIG. 6 is an explanatory diagram of a method of controlling a lighting fixture. In order to change the color temperature at a predetermined position with the color temperature control pattern shown in FIG. 1, the color temperature at the predetermined position is measured by a color temperature measuring sensor, and the color temperature difference between the measured value and the target color temperature value is calculated by the calculation unit. The control signal value for controlling the lamp output is determined in the control unit according to the result of the calculation.

FIG. 7 is an explanatory diagram of the lighting device. Two white fluorescent lamps 20a and 20b of different colors, a control unit 21 that controls the output of only one lamp 20a, a conversion circuit 22 that converts the signal of the control unit 21 into a dimming signal, and a control unit 21. The color temperature pattern of FIG. 1 is output by the lighting device including the dimming lighting device 23 that lights the lamp 20a by the dimming signal and the lighting device 24 of the other lamp 20b that is not controlled.

FIG. 8 is a color temperature output pattern for performing the illumination control method of claim 1 or claim 2 by the illumination device of FIG. Using a low color temperature lamp and a high color temperature lamp,
Only the lamp with high color temperature can be controlled, and the output is increased in the morning and the output is decreased in the afternoon.
In the case of this control method, the illuminance at a predetermined position increases with time in the morning and decreases with time in the afternoon. This is the same variation as the variation of the brightness of natural light and has the effect of adjusting the biological rhythm of a person. Therefore, in addition to the effect of claim 1, there is also the effect of adjusting the biological rhythm.

FIG. 9 is an explanatory diagram of a lighting device. At least two fluorescent lamps 26a, 26b of different colors are used, and the lighting device 27 for each of the lamps 26a, 26b is used.
The control unit 28 performs ON / OFF control of a and 27b, and outputs a color temperature satisfying claim 1 or claim 2.

FIG. 10 shows the illumination device of FIG. 9, which is a method of simultaneously lighting three of Matsushita's Palook fluorescent lamp W color, N color, and D color, respectively. It is a lighting schedule of each lamp for controlling with a color temperature pattern satisfying claim 2.

FIG. 11 shows a color temperature output value when the lamp is controlled to blink by the blinking schedule of FIG. 10 by the apparatus of FIG.

FIG. 12 is an explanatory diagram of the lighting system.
Control the color temperature of each lamp output light so that the color temperature value of the task area and the ambient light area that illuminates the ambient area are the same as the color temperature value of the task area and that of the ambient area The color temperature control pattern shown in FIG. 1 is used to change the color temperature of each area.

[0042]

According to the lighting control method of the first aspect,
By using the lighting device as a lighting device for an office space, the lighting device can be used as an effective method for improving the working efficiency of a worker.

The lighting control method according to claim 2, claim 3, claim 4, and claim 5, and claim 6, claim 7,
According to the illumination system of claims 8, 9, and 10, the same effect as that of claim 1 can be obtained.

[Brief description of drawings]

FIG. 1 is a color temperature time change pattern under illumination light control according to an embodiment of the present invention.

FIG. 2 is a ceiling-embedded luminaire according to an embodiment of the present invention.

FIG. 3 is a lighting system according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram of a lighting fixture control method according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram of a lighting fixture control method according to another embodiment of the present invention.

FIG. 6 is an explanatory diagram of a lighting fixture control method according to another embodiment of the present invention.

FIG. 7 is an explanatory diagram of a lighting fixture control method according to another embodiment of the present invention.

8 is a color temperature time change pattern according to the control method of FIG. 7 of the present invention.

FIG. 9 is an explanatory diagram of a lighting fixture control method according to another embodiment of the present invention.

10 is a blinking schedule of each lamp according to the control method of FIG. 9 of the present invention.

11 is a color temperature output pattern when control is performed according to the blinking schedule of FIG. 10 according to the control method of FIG. 9 of the present invention.

FIG. 12 is an explanatory diagram of a lighting fixture control method according to another embodiment of the present invention.

FIG. 13 is an explanatory diagram of an experimental result of a relationship between a color temperature of lighting and time, which improves mental work related to the present invention.

FIG. 14 is an explanatory diagram of an influence (average of six subjects) on a subjective degree of relaxation by a color temperature time change pattern under illumination light control according to an embodiment of the present invention.

FIG. 15 shows the influence on the subjective arousal degree by the color temperature time change pattern by the illumination light control according to the embodiment of the present invention (6
It is an explanatory view of (an average of human subjects).

FIG. 16 is a diagram showing a color temperature time change pattern under illumination light control according to an embodiment of the present invention and an influence on a subjective arousal degree according to a conventional office illumination type (for a value measured between 7:30 am and 8:30 am). It is an explanatory view of (difference).

FIG. 17 is a diagram showing an influence on a color temperature time change pattern under illumination light control and an electroencephalogram (α wave power density) according to a conventional office illumination type according to an embodiment of the present invention (measured between 7:30 am and 8:30 am). It is an explanatory view of the difference with respect to the value.

FIG. 18 is a diagram showing an influence of a color temperature time change pattern by illumination light control and brain waves (β-wave power density) by a conventional office lighting type according to an embodiment of the present invention (measured between 7:30 am and 8:30 am). It is an explanatory view of (the difference with respect to the value).

FIG. 19 shows the influence of the color temperature time change pattern by the illumination light control and the heart rate variability (HF component) by the conventional office lighting type according to the embodiment of the present invention (measured between 11:30 am and 12:30 am). It is an explanatory view of the difference with respect to the value.

FIG. 20 is a diagram showing an influence of a color temperature time change pattern by illumination light control and heart rate variability (LF / HF rate) by a conventional office illumination type according to one embodiment of the present invention (11:30 am).
Is a diagram illustrating a difference from a value measured between 12:30 and 12:30).

FIG. 21 is an influence on the average blood pressure by the color temperature time change pattern by the illumination light control and the conventional office lighting type according to the embodiment of the invention (the difference from the value measured between 11:30 am and 12:30 am). FIG.

FIG. 22 shows an influence on the correct answer rate of the odd-even discrimination task based on the color temperature time change pattern by the illumination light control and the conventional office lighting type according to the embodiment of the present invention (from 7:30 am to 8: am).
It is explanatory drawing of the difference with respect to the value measured during 30).

[Explanation of symbols]

1 Color temperature time variation curve by illumination light control according to one embodiment of the present invention 2 Ceiling-embedded lighting fixture 3 Upper limit expression of allowable range of color temperature time variation optimal for mental work of the present invention Y = (32321t ^3- 75703t ² + 51665t-5023.
8) * 1. 55, (where Y: color temperature, t: time data with 0 o'clock at 0 and 24 o'clock at 1, 0.3125 ≤ t ≤ 0.729). 4 Optimal color temperature time variation formula Y = 32321t ³ -75703t ² + 51665t-5023.8 for the work of the present invention, (wherein Y: color temperature, t: time data when 0 is 0, and 24 is 1; 0.3125
≤t ≤0.729). 5 Optimum allowable range of time variation of color temperature for workability of the present invention Y = (32321t ³ -75703t ² + 51665t-5023.8) /1.5
5, (wherein Y: color temperature, t: time data with 0 o'clock at 0 and 24 o'clock at 1, 0.3125 ≤ t ≤ 0.729).

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiro Shimomura             1558-60 Ino, Sakura City, Chiba Prefecture (72) Inventor             3-4-40 Kurosunadai, Inage-ku, Chiba-shi, Chiba New             Fuso Room 8 F-term (reference) 3K073 AA02 AA03 AA11 AA48 AA67                       AA85 BA32 BA36 CC11 CF16                       CF17 CF18 CG04 CG05 CG28                       CG41 CJ16 CJ22

Claims (10)

[Claims] 1. A lighting control method comprising increasing the color temperature at a predetermined position with time from about 7:30 to about 12:00 and decreasing it with time from about 12:00 to about 17:30. . 2. The color temperature at a predetermined position is set to 47 at about 7:30 am.
Set around 00K, around 6000K around 12:00 noon, and around 5000K around 17:30 PM to raise the color temperature at a predetermined position with time in the morning, and the color temperature at a predetermined position with time in the afternoon. Illumination control method comprising: 3. The color temperature at a predetermined position is Y = a * (32321t ³ -75703
t ² + 51665t-5023.8), (where, Y: color temperature, t: 0 o'clock at 0
, Time data where 12:00 is 24 o'clock, 0.3125 ≤ t ≤ 0.729, 1 /
The lighting control method is characterized by varying 1.55 ≦ a ≦ 1.55). 4. A lamp, a color temperature measuring sensor, a calculation unit for calculating a color temperature difference between a sensor measurement value and a target color temperature value, and a color temperature at a predetermined position based on a result of the calculation unit so as to be a target value. 4. A lighting system provided with a control unit for controlling a lamp output.
Illumination control method described. 5. The lighting control method according to claim 1, wherein the task lighting device and the ambient lighting device installed in the same room are controlled for dimming and toning. 6. A lighting device comprising a lighting device capable of adjusting a color temperature, and a control unit capable of automatically controlling a color temperature at a predetermined position by the lighting control method according to claim 1, claim 2, or claim 3. system. 7. The controller controls a lamp, a color temperature measuring sensor, a calculator that calculates a color temperature difference between a sensor measured value and a target color temperature value, and a color temperature at a predetermined position based on the result of the calculator. The lamp output is controlled so that the value becomes a value.
Illustrated lighting system. 8. The lighting fixture is a dimming / toning luminaire that uses two fluorescent lamps of different colors and changes the light color by controlling the output of only one lamp. Illustrated lighting system. 9. The luminaire comprises at least two different colors.
7. The lighting system according to claim 6, wherein the control unit controls lighting ON / OFF of each lamp by using a book fluorescent lamp. 10. The lighting system according to claim 6, wherein the lighting device comprises a task lighting device and an unbind lighting device installed in the same room.