JPH0765963A - Natural light reproducing system - Google Patents

Abstract

PURPOSE:To reproduce the natural light of outer field with high fidility controlling the chromatic temp. on the basis of the region information, time information, and environment information. CONSTITUTION:A natural light reproducing system is composed of a latitude input means 1, date input means 2, environment, sensor 3 to sense the illuminance and chromatic temp. of the outer field, memory means 6 to store the chromatic temp. and illuminance corresponding to the regional latitude and the date, a means 5 to decide the chromatic temp. and illuminance of the closed space on the basis of the memory means 6, and a means to correct the chromatic temp. with the sensing value given by the environment sensor 3. A white, a red, a blue, and a green fluorescent lamp 8, 9, 10, 11 are selectively lighted and subjected to dimming control according to the chromatic temp. decided, while the output of each fluorescent lamp is controlled on the basis of the illuminance decided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a natural light reproduction system in a deep underground space or a closed space isolated from the outside such as a control room of a nuclear power plant.

[0002]

2. Description of the Related Art It is known that the human body has a biological rhythm (circadian rhythm), and natural light has a function of adjusting it, while artificial lighting may adversely affect the biological rhythm. ing. The color of light emitted by the light source varies depending on the type of light-emitting body.Even though it is white, incandescent light bulbs give a reddish tint, and mercury lamps give a bluish tint.
Further, even with the same light bulb, when the illuminance is low, the light is reddish, but the redness decreases as the illuminance increases. The standard of this light color is expressed as a color temperature, and the unit of the color temperature is K (Kelvin). Fig. 5 shows the color temperature of natural light and various artificial lighting. The color temperature of reddish light is low as a whole, and the value becomes higher as it becomes paler. Color temperature cannot be obtained.

Conventionally, in order to solve this problem, red,
An illumination system has been proposed in which four colors of blue, green, and white fluorescent lights are toned to change the warm color temperature from 3,000K to the cool color temperature of 10,000K.

[0004]

By the way, when considering the use of the above-mentioned illumination system capable of varying the color temperature in a closed space that is isolated from the outside such as a deep underground space or the control room of a nuclear power plant, It causes various problems. In an enclosed space, it is difficult to understand the external situation, and even if the external situation is grasped, the conventional method selects the color temperature according to the subjectivity of the operator. There is a problem that it is difficult to faithfully reproduce the natural light of the outside world. In addition, the lighting environment required by humans is various, and at some times, the same state or change as the outside world is required, and at some times, a state different from the outside world, for example, the summer state of Hawaii is obtained. The conventional method has a problem that it cannot meet these needs.

The present invention solves the above-mentioned conventional problems, and more faithfully controls the color temperature in a closed space isolated from the outside by controlling the color temperature with regional information, time information and environmental information. It is an object of the present invention to provide a natural light reproduction system capable of reproducing natural light in the outside world.

[0006]

To this end, the natural light reproduction system of the present invention comprises a latitude input means 1 and a date / time input means 2.
And an environmental sensor 3 that detects the illuminance and color temperature of the outside world
A storage means 6 for storing the color temperature and the illuminance corresponding to the latitude and the date and time of the area; a means 5 for determining the color temperature and the illuminance of the closed space based on the storage means 6; and a detection value of the environment sensor 3. Means for correcting the color temperature by
The white fluorescent lamp 8, the red fluorescent lamp 9, the blue fluorescent lamp 10, and the green fluorescent lamp 11 are selectively turned on and color-controlled according to the determined color temperature, and the output of each fluorescent lamp is adjusted based on the determined illuminance. It is characterized by controlling. Further, it is provided with a storage means for storing color temperature and illuminance corresponding to the latitude and date and time of other areas, and a color temperature change input means so that the color temperature of the enclosed space can be corrected to the color temperature and illuminance of other areas. You may do it. It should be noted that the numbers added to the above configurations are for comparison with the drawings, and the configurations of the present invention are not limited thereby.

[0007]

In the present invention, the color temperature data of the outside world of the area, which fluctuates daily and seasonally, is created, and the color temperature of the closed space is determined based on the data, and the color temperature of the closed space is basically , Is controlled according to the external color temperature, but when the external environment of the area changes, the color temperature is corrected based on the color temperature data of the environment, and the closed space faithfully reproduces the external state. Corrected to color temperature.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a natural light reproduction system of the present invention. The signals of the latitude input means 1, the date / time input means 2 and the environment sensor 3 for detecting the illuminance and the color temperature of the outside world are input to the color temperature / illuminance determining means 5 of the control device 4,
Here, the color temperature and the illuminance are determined based on the database stored in the storage device 6, and the control signal output unit 7
The white fluorescent lamp 8, the red fluorescent lamp 9, the blue fluorescent lamp 10 and the green fluorescent lamp 11 so that the determined color temperature is output.
Is selectively turned on and toned, and the output voltage of each color fluorescent lamp is controlled based on the determined illuminance. For the color adjustment of each color fluorescent lamp, lighting of each color fluorescent lamp is combined so that the color temperature shown in FIG. 5 is output.

FIG. 2 shows a method for determining the color temperature according to the region and time. In order to set the color temperature for each region, as shown in FIG. 2 (A), as the latitude increases, The color temperature is set to be high, and in a day change, as shown in FIG. 2B, the color temperature is low at sunrise and sunset, and becomes high toward noon. Set to. The value of this color temperature is such that 3,300K or less is felt warm and 5,300K or more is felt cool. Also, the illuminance is determined as a value that makes the user feel comfortable in accordance with the determined color temperature, as shown in FIG.

FIG. 4 shows the flow of color temperature determination processing according to the present invention. First, in step S1, color temperature data of the outside world of the area, which fluctuates day by day and season, is created, and based on this, step S2. Then, a basic program for controlling the color temperature of the closed space is created, and the color temperature of the closed space is determined in step S3. That is, the color temperature of the closed space is basically controlled by following the color temperature of the outside world. However, in step S4, the external environment of the area changes (for example,
Then, in step S5, the color temperature is corrected based on the color temperature data of the environment, and the closed space is corrected to a color temperature that faithfully reproduces the external state. In step S7, if necessary, a color temperature change command is input, and the color temperature is corrected based on the color temperature data of the outside world of other regions. Based on this, for example, while in Hokkaido, Kyushu or Europe. Is corrected to the color temperature of. In addition,
It is also possible to correct to a desired color temperature by a color temperature change command.

[0011]

As is apparent from the above description, according to the present invention, color temperature in addition to illuminance is controlled by area (latitude) information, time information and environmental information in a closed space isolated from the outside. By doing so, it is possible to more faithfully reproduce the natural light of the outside world. In addition, when there is a lack of natural light such as in Northern Europe, there are many seasonal depressions, but in such cases, rather than reproducing the actual external environment, the state of a low latitude place is reproduced, It is possible to provide a more comfortable lighting environment. In addition, at night and at the time of the event, it is possible to perform lighting control with rich color rendering in the closed space.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a natural light reproduction system of the present invention.

FIG. 2 is a diagram illustrating a method of determining a color temperature according to a region and time.

FIG. 3 is a diagram for explaining a method of determining illuminance.

FIG. 4 is a diagram showing a flow of color temperature determination processing in the present invention.

FIG. 5 is a diagram showing color temperatures of natural light and various artificial lights.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Latitude input means, 2 ... Date input means, 3 ... Environment sensor 4 ... Control device, 5 ... Color temperature / illuminance determination means, 6 ... Storage device 7 ... Control signal output part, 8 ... White fluorescent lamp, 9 ... Red Fluorescent light, 1
0 ... Blue fluorescent lamp 11 ... Green fluorescent lamp

Claims (2)

[Claims] 1. Latitude input means, date and time input means, environmental sensor for detecting illuminance and color temperature of the outside world, storage means for storing color temperature and illuminance corresponding to latitude and date and time of the area, and the storage. Means for determining the color temperature and illuminance of the closed space based on the means, means for correcting the color temperature by the detection value of the environmental sensor, and white, red, blue and green fluorescent lamps according to the determined color temperature. A natural light reproduction system characterized by selectively lighting and controlling toning, and controlling the output of each color fluorescent lamp based on the determined illuminance. 2. A storage means for storing color temperature and illuminance corresponding to the latitude and date and time of another area, and a color temperature change input means for setting the color temperature of the closed space to the color temperature and illuminance of another area. The natural light reproduction system according to claim 1, wherein the system is capable of correction.