JPH05121176A - Color matching lighting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a toning lighting device capable of detecting the current outdoor atmosphere and illuminating the space with the most comfortable atmosphere. [Structure] A color temperature sensor 1 and a daylight sensor 2 detect the current outdoor atmosphere, and dimming control is performed on the lamps 8a to 8c having different emission colors according to the atmosphere. Illuminate a space close to the outdoors to the same atmosphere as outdoors or the same as indoors. Further, the lighting is controlled in conjunction with the human body detection by the human body sensor. [Effect] There is an effect that the space can be illuminated in the most comfortable atmosphere.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention performs interlocking control between a variable color lighting device that obtains mixed color light by adjusting the amount of light and the mixing ratio of a plurality of light sources that emit light of different colors and various outdoor weather conditions. The present invention relates to such a toning lighting device.

[0002]

2. Description of the Related Art Conventional lighting devices have been provided with the idea that they only have to be turned on, and the environment created by the lighting devices has been put in a subordinate position that is neglected or neglected. Recently, a variety of light color lamps have also been developed for lighting devices (for example, fluorescent lamps) to produce a space. That is, lamps of daylight color (6,500K), daylight white (5,000K), white (4,200K), light bulb color (3,000K), etc. are properly used according to the application. However, they cannot change the atmosphere of the place without replacing the lamp. For example, it is impossible to realize an outdoor atmosphere that changes from moment to moment.

On the other hand, various methods have been proposed for controlling the illumination color, and for example, control for changing the dimming ratio of RGB lamps is known. Also, an application has been filed for controlling the illumination color by a factor of time or season and changing the color and color temperature of the illumination depending on the time of day and season (see Japanese Patent Application No. 2-158031). This is to change the lighting at each time in conjunction with a clock in a basement or a room without windows. Further, a device that changes the illumination color depending on the temperature has also been proposed (see Japanese Patent Application No. 2-17192). However, these are simulated images, and the meteorological conditions do not always match even at the same time and the same temperature, so that they are not reproducing the actual outdoors.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an adjustment that detects the current outdoor atmosphere to illuminate the space with the most comfortable atmosphere. An object is to provide a color lighting device.

[0005]

FIG. 1 is a block diagram showing the basic configuration of the present invention. In the figure, 1 is a color temperature sensor,
2 is a daylight (illuminance) sensor, 3 is a color temperature data address output unit, 4 is a dimming data address output unit, 5 is a dimming data storage unit, 6a to 6c are toning data conversion units, and 7a to 7c.
Is a toning lighting device, and 8a to 8c are lamps (for example, RGB lamps) having different emission colors. Addresses are set and output from the color temperature data address output unit 3 and the dimming data address output unit 4 in accordance with the output states of the color temperature sensor 1 and the daylight sensor 2, and the lamps 8a, 8b,
The data corresponding to the set address is read by the toning data storage unit 5 in which the dimming level data of 8c is stored. This data is the toning data conversion unit 6a-
6c converts to the toning signal, and the toning lighting devices 7a, 7
b, 7c, and the lamps 8a, 8b, 8c are turned on at the dimming level according to the signal. Here, the light outputs from the lamps 8a, 8b, 8c are mixed by a milky white panel or the like to be one light source, and the light color of illumination is obtained by this light source. The color temperature of the light color of the illumination is changed by the dimming lighting as described above according to the output states of the color temperature sensor 1 and the daylight sensor 2. The color temperature corresponds to the blackbody locus of the chromaticity coordinates by definition, but since such a locus is rare, it actually means a change in the correlated color temperature. This correlated color temperature is called a color temperature.

[0006]

In the lighting apparatus of the present invention, the color temperature sensor 1 and the daylight (illuminance) sensor 2 detect the current outdoor atmosphere, and the lamp 8a having a different emission color according to this atmosphere.
Since the dimming control of ~ 8c is performed, the space can be illuminated in the most comfortable atmosphere.

[0007]

FIG. 2 is a circuit diagram of a first embodiment of the present invention.
Reference numeral 1 is a color temperature sensor, which is, for example, like a colorimeter and its output is a chromaticity coordinate (X, Y). Reference numeral 3 denotes a color temperature data address output unit, which has 4 bits (1 bit depending on the chromaticity coordinate value detected by the color temperature sensor 1).
Address data of 6 divisions is output. More specifically, as shown in Table 1, the color temperature is divided into 16 and 2
When the range of chromaticity coordinates (X, Y) is 900K to 3100K, the address 0000 is output and 3100K to 3300.
Address 000 when in the range of K chromaticity coordinates (X, Y)
1 is output, and thereafter, in the same manner, 8500K to 9500
Address 111 in the case of the range of K chromaticity coordinates (X, Y)
1 is output.

Next, 2 is a daylight sensor, for example,
It is like an illuminometer, and its output is illuminance (lx)
Is. A dimming data address output unit 4 outputs 3-bit (8 divisions) address data according to the illuminance value detected by the daylight sensor 2. More specifically, as shown in Table 2, the illuminance is divided into eight, and
The address 000 is output at 0 to 100,000 lx,
The address 001 is output at 30,000 to 50,000 lx, and similarly, the address 111 is output at 0 to 1,000 lx.

[0009]

[Table 1]

Reference numeral 5 denotes a toning data storage unit, which is a dimming data address A _{0 to} A ₂ and a color temperature data address A _{3 to} A _6.
The dimming data (each 8 bits) of each lamp 8a, 8b, 8c corresponding to the
_It outputs dimming data corresponding to _{0 to} A ₆ , and is, for example, a ROM (read-only memory). 6a, 6b, 6c are the dimming data (8 bits each)
In response to this, for example, it is a toning data conversion unit for converting into a PWM (pulse width modulation) type duty-adjustable toning signal.

[0011]

[Table 2]

Now, when the color temperature data address is 0000, that is, when the outdoor color temperature is in the range of 2,900 to 3,100K, the lamps 8a, 8b, 8c are dimmed to obtain the mixed color temperature. Each 8-bit data corresponding to each dimming amount of about 3,000 K is output. Regarding the dimming data address, for example, when the outdoor illuminance is in the range of 50,000 to 100,000 lx, the light output is 5,000 lm at the color temperature corresponding to the color temperature data address. Dimmer data (8 bits each) is output. Also,
The dimming data address is 111, that is, the outdoor illuminance is 0.
2,500 l when in the range of up to 1,000 lx
The light control data (each 8 bits) is output such that the light output is m (50% light control amount when the outdoor illuminance is in the range of 50,000 to 100,000 lx).

Reference numerals 7a, 7b and 7c are toning lighting devices.
First, the color-adjusting lighting device 7a is a two-stone inverter lighting device. The commercial AC power source is full-wave rectified by the full-wave rectifier DB1, and the DC voltage obtained by smoothing with the capacitor C1 is connected in series with the transistors Q1 and Q2. The duty-variable toning signal applied to the circuit and output from the toning data conversion unit 6a by the PWM method is converted into a frequency-variable signal by the duty / frequency conversion circuit F1, and the transistor Q1 is controlled by the control circuit S1 at that frequency. , Q2 are alternately turned on and off, and the lamp 8a is turned on by the resonance action of the series circuit of the inductor L1 and the capacitor C4 connected to both ends of the transistor Q2. The resonance frequency supplied to the lamp 8a is changed by changing the oscillation frequency of the lamp 8a, and the light output of the lamp 8a is controlled. It is intended. Other toning lighting device 7
b and 7c have the same structure. Therefore, the output data D _{0 to} D ₇ , D _{8 to} D ₁₅ , of the toning data storage unit 5,
Based on D _{16 to} D ₂₃ , the dimming ratio of each of the lamps 8a, 8b, 8c is appropriately determined, and the outdoor color temperature and illuminance can be faithfully reproduced indoors.

FIG. 3 is a block circuit diagram of the second embodiment of the present invention. Reference numeral 1 is a color temperature sensor, and 2 is a daylight sensor, which may be the same as those in the first embodiment. In this embodiment, not only the color temperature sensor 1 and the daylight sensor 2 but also
The temperature sensor 9 and the rainfall sensor 10 are also included to detect the outdoor environment. As a result, in addition to faithfully producing the outdoors, depending on the temperature and weather, the lamp 8a,
The light color (color temperature) obtained by mixing 8b and 8c is corrected. Reference numeral 11 denotes a toning data address output unit for outputting the toning data address according to the output state of each sensor 1, 2, 9, 10. Reference numeral 5 is a toned data storage unit, 6a, 6b and 6c are toned data conversion units, 7 is a toned lighting device, and 8a, 8b and 8c are lamps of different emission colors. Same as the example.

To explain this embodiment more specifically, the color temperature sensor 1 may be the same colorimeter as in the first embodiment, or the color sensor shown in FIG. 4 (for example,
It may be PD170V1) made by Sharp. When the latter color sensor is used, the relationship between sensor output and color temperature is as shown in FIG. This color sensor is blue
The outputs of the photodiodes PDb, PDg, PDr provided with green and red color filters are logarithmically converted by a log diode and an operational amplifier, and then converted into two output voltages Vbg, Vgr by a differential amplifier composed of a resistor and an operational amplifier and output. To do. Note that Vk is a reference voltage.

The data conversion table from the color temperature sensor 1 is similar to that in Table 1, and the data conversion table from the daylight sensor 2 is similar to that in Table 2. The data conversion table from the temperature sensor 9 is a 2-bit output as shown in Table 3, and the data conversion table from the rainfall sensor 10 is shown in Table 4.
1-bit output as shown in. As a result, the toning data address output unit 11 causes the color temperature address (4
(Bit), daylight address (3 bits), temperature address (2 bits), and rainfall address (1 bit), a total of 10-bit toning data address is output. The toning data storage unit 5 is accessed by this address, and the toning data at that time is output. However, as shown in Tables 5 and 6, the color temperature address and daylight address are the same. Even if the temperature and weather are different, the toning data is such that the reproduced color temperature and illuminance are also corrected.

[0017]

[Table 3]

[0018]

[Table 4]

First, in the example shown in Table 5, the outdoor environment has a color temperature of 6,500 to 7,000 K and an illuminance of 10,000.
~ 30,000 lx, no rain, color temperature data address 1100, daylight data address 01
0, and the rainfall data address is 0. In this case, the toning data of the indoor reproduced scene changes depending on the outdoor temperature, and when the temperature is 10 ° C. or less (temperature data address is 00), the color temperature is 4,000 K and the temperature is 10 to 20 ° C.
When the temperature data address is 01, the color temperature is 5,
When the temperature is 000K and the temperature is 20 to 30 ° C (the temperature data address is 10), the color temperature is 6,500K and the temperature is 30 ° C.
In the above case (the temperature data address is 11), the color temperature changes to 8,000K. That is, when the outdoor temperature is low, the color temperature (6,500K) that is faithfully reproduced is lowered to a warm atmosphere, and when the temperature is high, the correction is performed in reverse. In this example, the illuminance is 5,000.
lm remains unchanged.

[0020]

[Table 5]

[0021]

[Table 6]

Next, in the example shown in Table 6, the outdoor environment has a color temperature of 4,900-5,200K and an illuminance of 2,000-.
It is 3,000 lx, the temperature is 20 to 30 ° C., and only the illuminance level is corrected by the presence or absence of rainfall. In this example,
When there is rainfall, the illuminance is slightly higher. As described above, in the present embodiment, not only the outdoor color temperature is faithfully reproduced, but also the toning level is corrected according to the temperature and the weather, so that a more comfortable space can be created.

FIG. 6 is a block circuit diagram of the third embodiment of the present invention. In this embodiment, a large number of lighting fixtures L for toning using the toning lighting device as shown in the above-mentioned first embodiment are provided.
In a space installed in an office or the like, the color temperature of the lighting fixture L in the first row near the window is controlled according to the outdoor color temperature. In the figure, 1 is a color temperature sensor,
Based on the detected output, the toning data address output unit 12
To output the data address. Color matching data storage unit 5
In 1, the toning data is read based on the input data address, and the toning data conversion unit 61 performs PWM.
The signal is converted into a system signal and supplied to the lighting fixture L for color matching. The data address input to the toning data storage unit 51 can be switched by the changeover switch 15. The color temperature change operating unit 14 is arranged near the changeover switch 15. A data address is output from the toning data address output unit 13 based on the output of the color temperature change operation unit 14. When the changeover switch 15 is operated to input the data address from the toning data address output unit 13 to the toning data storage unit 51, the luminaire L on the first row at the window changes the color temperature by the color temperature change operation unit 14. Operated.
Further, when the changeover switch 15 is operated to input the data address from the toning data address output unit 12 to the toning data storage unit 51, the lighting fixture L in the first row at the window is outdoors detected by the color temperature sensor 1. It is controlled according to the color temperature of. The data address from the toning data address output unit 13 is also input to the toning data storage unit 52, and the toning data read from this toning data storage unit 52 is the toning data conversion unit 62. Is converted into a signal of the PWM system by and is supplied to the lighting fixture L for color adjustment in the second row at the window or the third row at the window. Therefore, the color temperature change operation unit 14 operates the color temperature change of the toning luminaire L in the second row and the third row near the window regardless of the outdoor color temperature detected by the color temperature sensor 1. It The toning data address output unit 13 is composed of, for example, a counter, and the color temperature change operating unit 14 is composed of an up / down switch or the like for operating the counter, and increases or decreases the count value of the counter. By doing so, a desired data address is created.

FIG. 7 shows a lighting fixture L for color adjustment in this embodiment.
Is shown, and the left side in the figure is the window side. FIG. 7 also shows the relationship between the color temperature and the distance from the window according to this embodiment. When the color temperature change operation button 14 is used to set the color-adjusting luminaire L to a color temperature of 5,000 K and the outside light is 10,000 K, the solid line A in the figure
As shown in FIG. 1, only the luminaire L in the first row at the window is 10,
Control to a color temperature of 000K. In addition, outside light is 3,000
When K, as shown by the solid line A2 in the figure, only the lighting fixture L in the first row at the window is controlled to have a color temperature of 3,000K.
Here, when the changeover switch 15 is operated to input the data address from the toning data address output unit 13 to the toning data storage unit 51, the color temperature of the lighting fixture L in the first row at the window is set outdoors. It will not work with the color temperature sensor 1.
In this case, the color temperature change operation unit 14 uniformly changes the color temperatures of all the lighting fixtures L. The color temperature distributions when the color temperature is set to 5,000K are as shown by the alternate long and short dashed lines B1 and B2 in the figure. in this way,
Conventionally, when outside light enters, the color temperature of only the window portion changes slightly as indicated by alternate long and short dashed lines B1 and B2 in the figure. However, in the present invention, only the lighting fixture L near the window has the color temperature of the outside light. Since it is adapted to the same illumination color as the above, it has the effect of increasing the feeling of comfort and openness by making the window feel more outdoors.

FIG. 8 is a block circuit diagram of the fourth embodiment of the present invention. In the present embodiment, in the same space as in the third embodiment, even when external light enters from the window side, the color temperature is set to be uniformly adjusted to the color temperature set in all areas. The toning data address output unit 13
The toning address data is output according to the operation of the color temperature change operation button 14, the toning data is read from the toning data storage unit 52 based on this address data, and the toning data converting unit 62 uses the PWM method. Converted to a signal, at the window 2
The color temperature of the lighting fixture L in the third row or the window side is controlled.
The above configuration is similar to that of the third embodiment described above. next,
For the first column by the window, the toning data address output unit 13
Based on the outputs from the color temperature sensor 1 and the daylight sensor 2, the toning data calculated and output by the data calculation and output unit 17 is converted into a PWM system signal by the toning data conversion unit 61, and the lighting fixture L The color temperature of is controlled.

The control of the luminaire L in the first row near the window will be described below. When the user sets a desired color temperature with the color temperature change operation button 14, the color temperature (Xi, Y
i) and the data (Xi, Yi, Φi) of the set light amount Φi are output from the toning chromaticity coordinate data output unit 16. On the other hand, by the color temperature sensor 1 and the daylight sensor 2, the color temperature (Xj, Yj) of the outdoor light and the data (Xj, Y) of the incident light amount Φj.
j, Φj) is output. These two data (X
i, Yi, Φi) and (Xj, Yj, Φj) are calculated by the data calculation output unit 17 so that the mixed light of the external light and the lighting fixture L does not change from the originally set color temperature. The set color temperature (Xi *, Yi *) of is changed. The arithmetic expression of the set color temperature (Xi *, Yi *) is as follows.

[0027]

[Equation 1]

The set light quantity of the luminaire L near the window is Φi, and the set data (Xi, Y
i (Φi) color temperature corrected data (Xi *, Yi)
*, Φi) is output, and this data is converted into the data of the dimming amount of the luminaire L by the toning data conversion unit 61,
It becomes a toning signal, and the color temperature of the lighting device L for toning in the first row near the window changes according to the signal, and the color temperature immediately below it remains the originally set color temperature. Therefore, the color temperature of the entire space is always constant even if external light enters. This state is shown in FIG. Conventionally, when outside light enters as indicated by the alternate long and short dashed lines B1 and B2, the color temperature directly below the window may change, which may cause a sense of discomfort with other spaces. By changing the color temperature only and controlling not to change the color temperature of the mixed color immediately below, the entire space is kept constant at the set color temperature as shown by the solid lines A1 and A2, and even if outside light enters, it feels strange. It has the effect of disappearing.

FIG. 10 is a block diagram of the fifth embodiment of the present invention. In this embodiment, when a person enters the room from the outside, the color temperature and illuminance in the room are changed from the normal time for a while after entering the room in conjunction with this, so that an outdoor atmosphere is produced. Is. For example, the color temperature is combined with the outdoor color temperature and the illuminance is increased to 150% of the normal level. In the figure, 1 is a color temperature sensor, 2 is a daylight sensor, 11 and 13 are toning data address output sections,
14 is a color temperature change operation button, 19 is a toned chromaticity coordinate data storage unit, 21 is a data calculation processing unit, 6 is a toned data conversion unit, 7 is a toned lighting device, and 8a, 8b and 8c are luminescent colors. Different lamps, 22 are human sensors. When the user sets a desired color temperature with the color temperature change operation unit 14,
Addresses are sequentially output from the toning data address output unit 13 by a counter or the like, and the toning and chromaticity coordinate data storage unit 20
From the chromaticity coordinates of the desired color temperature and the light intensity data (Xi,
Yi, Φi) is output. On the other hand, the color temperature sensor 1 and the daylight sensor 2 output chromaticity coordinates of the color temperature of outdoor light and illuminance data (Xj, Yj, Φj). These two pieces of data are processed by the data calculation processing unit 21 and the toning data that changes with time as shown in FIG. 11 is output. As a result, the toning signal converted by the toning data conversion unit 6 is input to the toning lighting device 7 to turn on the lamps 8a, 8b and 8c.

An example of control according to this embodiment will be described with reference to FIG. Now, at time t1, when a person enters the room from the outside, the human body sensor 22 turns on the lamps 8a, 8b, 8c. At this point, the light is turned on at the color temperature (8,000 K) corresponding to the color temperature of the external light and the illuminance and the light amount ratio (150% light amount). After that, the color temperature and the light amount ratio start to gradually decrease with the passage of time, and at time t2, the color temperature and the illuminance set by the color temperature change operation unit 14 are restored.

The data creation flow by the data calculation processing section 21 is as shown in FIG. From the chromaticity coordinate (Xj, Yj) of the initial color temperature to the chromaticity coordinate (X
i, Yi) time τ (see FIG. 11) is divided into n equal parts,
This is a flow of creating data (Xt, Yt, Φt) that is momentarily. Note that K represents a certain coefficient. In this way, when a person enters the room from the outside, the color temperature and illuminance that are close to the state of the outdoors are turned on, and the value gradually changes to the original setting value, eliminating discomfort due to environmental changes, The effect of accelerating eye adaptation is obtained. The change time τ of the color temperature and the amount of light is not particularly limited as long as it is a time for eliminating discomfort and accelerating adaptation. Also, the change may be gradual. Before time t1, that is, when the human body sensor 22 is not working, the lamps 8a to 8c are not lit, but may be lit at the initial set color temperature and illuminance level.

In the present invention, the types of various sensors are
Anything can be used as long as it can detect the outdoor environment, and the content of the detection is not limited to that illustrated in the embodiments. Further, the number of sensors may be increased or decreased as necessary. For example, an air flow sensor and a time timer may be added. Further, the toning lighting device is not limited to the high frequency lighting device, and may be any type such as a commercial AC lighting system or a DC lighting system. The type of the toning signal may be any type such as a duty signal or a DC signal as long as it is converted from the toning data. Further, the lamp may be of any type as long as it emits different colors, and is not limited to the discharge lamp. For example, a combination of an incandescent lamp and a color filter may be used. The specific color temperature and illuminance control illustrated in the embodiments are merely examples, and the present invention is not limited to these.

[0033]

According to the toning lighting device of the present invention, the outdoor environment is detected, and the color temperature and the illuminance are controlled so as to match the detected information. It has the effect of being able to illuminate.

In the toning lighting device of the second aspect, the color temperature and the illuminance of the space area where the outside light enters can be brought close to the outdoors.
This has the effect of providing a lighting environment with a high sense of openness.

In the toning lighting device of the third aspect, since the color temperature and the illuminance of the space area where the outside light enters and the other space areas are controlled to be uniform, even if the outdoor light changes, the indoor area can be changed. The lighting environment has the effect that it can be kept unchanged.

In the toning lighting device according to the fourth aspect, the color temperature and the illuminance in the room are made to be close to the outdoor light for a predetermined time after a person enters the room from the outdoors, so that a lighting environment with no discomfort can be obtained. There is an effect that is.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a circuit diagram of a first embodiment of the present invention.

FIG. 3 is a block circuit diagram of a second embodiment of the present invention.

FIG. 4 is a circuit diagram showing a configuration of a color temperature sensor used in a second embodiment of the present invention.

FIG. 5 is a characteristic diagram showing characteristics of the color temperature sensor used in the second embodiment of the present invention.

FIG. 6 is a block circuit diagram of a third embodiment of the present invention.

FIG. 7 is an operation explanatory diagram of the third embodiment of the present invention.

FIG. 8 is a block circuit diagram of a fourth embodiment of the present invention.

FIG. 9 is an operation explanatory diagram of the fourth embodiment of the present invention.

FIG. 10 is a block circuit diagram of a fifth embodiment of the present invention.

FIG. 11 is an operation explanatory diagram of the fifth embodiment of the present invention.

FIG. 12 is a flowchart for explaining the operation of the fifth embodiment of the present invention.

[Explanation of symbols]

 1 Color temperature sensor 2 Daylight sensor 3 Color temperature data address output unit 4 Dimming data address output unit 5 Toning data storage unit 6a, 6b, 6c Toning data conversion unit 7a, 7b, 7c Toning lighting device 8a, 8b , 8c lamp

Claims (4)

[Claims] 1. An environment detecting means for detecting an outdoor environment using at least one of a color temperature sensor, a daylight sensor, a temperature sensor, and a rainfall sensor, and most suitable for the outdoor environment based on the detected environmental information. A toning illuminator, comprising: a toning control unit that selects and reproduces the selected color temperature and illuminance. 2. The toning lighting device according to claim 1, further comprising means for varying a color temperature and an illuminance so as to reproduce an outdoor environment only in a space area where external light enters. 3. A means for varying the color temperature only in the space area where the outside light enters so that the color temperature distributions of the space area where the outside light enters and the other space areas are the same. 1. The toning lighting device according to 1. 4. A human body sensor for detecting that a person has entered the room from the outside, and means for varying the color temperature and illuminance so as to reproduce the outdoor environment for a predetermined time after detecting the human body. The toning lighting device according to claim 1, further comprising: