JP3383981B2 - Lighting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device in which a variable color illuminating device for dimming a plurality of fluorescent lamps having different emission colors to obtain an arbitrary color mixed light and a point light source with high brightness are combined. .

[0002]

2. Description of the Related Art In recent years, an illumination device combining a plurality of light sources is becoming popular in place of an illumination device using a single light source such as an incandescent lamp or a fluorescent lamp. For example, a fluorescent lamp and an incandescent lamp which are housed in one lighting device and whose load is switched or selected are commercially available. In the lighting device in which a plurality of light sources are combined as described above, the user can freely create various atmospheres and the quality of lighting is improved.

In such an illuminating device, it is sometimes desired to turn on both the fluorescent lamp and the incandescent lamp to obtain the illuminance and the glittering feeling at the same time. To that end, the purpose can be achieved by turning on both the fluorescent lamp and the incandescent lamp, but originally, the fluorescent lamp and the incandescent lamp have different color temperatures, and when mixed, the warm feeling of the incandescent lamp ( The color temperature of about 3000K is extinguished by the light of the fluorescent lamp (for example, the color temperature of 5000K), and there is a problem that the atmosphere changes only by the glittering feeling. In order to avoid this, it is sufficient to use fluorescent bulbs with a light bulb color (color temperature of about 3000K), but if you want to use only fluorescent bulbs, the so-called cool and lively atmosphere is not created, so the scene There was the annoyance that the lamp had to be replaced for each selection.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to dimming a plurality of fluorescent lamps having different light emission colors to obtain an arbitrary mixed color light. In a lighting device that combines a variable color lighting device that obtains the above and a point light source with high brightness such as an incandescent lamp or a high-intensity discharge lamp, the atmosphere when both loads are turned on is not impaired.

[0005]

In order to solve the above-mentioned problems, in the lighting device of the present invention, as shown in FIG. 1, a plurality of fluorescent lamps 12R, 12G, 12 having different emission colors are used.
In a lighting device that combines a variable-color lighting device for dimming B to obtain an arbitrary color-mixed light and a point light source such as an incandescent lamp 13 having high brightness, the point light source and the variable-color lighting device are the same.
It is characterized by comprising means for controlling the mixed color of the variable color lighting device so as to match the light color of the point light source in conjunction with the lighting state of the point light source when the light source is occasionally turned on. .

When the point light source with high brightness is a high-intensity discharge lamp (HID lamp) such as a high-pressure sodium lamp, a multi-halogen lamp, or a mercury lamp, the light color of the high-intensity discharge lamp is changed by dimming. Therefore, in conjunction with the change, the mixed color of the variable-color lighting device may be corrected so that the light color of the entire lighting device matches the light color of the high-intensity discharge lamp when fully lit. Further, when the high-intensity discharge lamp is fully lit, the mixed color of the variable color lighting device can be set to an arbitrary mixed color, and the mixed color of the entire lighting device is maintained at the time of full lighting. As described above, the light mixture color of the variable color lighting device may be corrected when the high-intensity discharge lamp is dimmed.

[0007]

In the present invention, as described above, a plurality of fluorescent lamps 12 are used.
The mixed color of the variable color lighting device which obtains an arbitrary mixed color light by dimming R, 12G and 12B is changed to an incandescent lamp or a high intensity discharge lamp (HID).
Since the control is performed in conjunction with the lighting state of a point light source with high brightness such as a lamp), the mixed color of the entire lighting device can be maintained at a desired color output even when both loads are lighting at the same time. It can be done and the atmosphere of the place is not destroyed.

[0008]

1 is a block diagram of a first embodiment of the present invention. In the figure, 1 is an AC power supply, 2 and 3 are power switches, 4 is a relay, 5 is a relay contact part, 6 is a color setting part, 7 is an address setting part, 8 is a counter, 9 is a toning data storage part, 10
Is a toning data conversion output unit, 11R, 11G and 11B are lighting devices, 12R, 12G and 12B are fluorescent lamps having different emission colors, 13 is an incandescent lamp, and 14 is a light source unit. The toning data storage unit 9 is composed of, for example, a ROM (read-only memory), and has 14-bit address input terminals A ₀ to
A ₁₃ and data output terminals D _{0 to} D _{2 of} 3 bits or more are provided. The data output terminals D _{0 to} D ₂ output data for controlling the dimming level of each of the fluorescent lamps 12R, 12G and 12B having a predetermined color. The data output from the data output terminals D _{0 to} D ₂ changes corresponding to the address input terminals A _{7 to} A ₁₂ . In this embodiment, since the address input terminals A _{7 to} A ₁₂ are 6 bits, 2 ⁶ = 64 kinds of toning data are stored. The level of the address input terminal A ₁₃ is interlocked with the operation of the relay 4, and becomes the High level only when the power switch 2 is turned on and the incandescent lamp 13 is turned on.
When 3 is off, it is at Low level.

When the incandescent lamp 13 is off, the address input terminals A _{7 to} A ₁₃ are, for example, A ₁₃ , ..., A ₇ in this order, "0000001" is the address of white data having a color temperature of 3000K, and "0001000" is color temperature 5000
The address of K white data, “0111111”, is set as the address of white data of color temperature 10000K.

When the incandescent lamp 13 is turned on, the address input terminal A ₁₃ is at a high level. In this case, "1000001" is the white data of the color temperature 2800K in the order of A ₁₃ , ..., A ₇ . Address, "100100
"0" is also the address of white data with a color temperature of 2800K, "1"
Also, 111111 ″ has an address of white data of color temperature 2800K and all addresses are set to addresses of white data of color temperature 2800K.

Of the address input terminals A _{0 to} A ₁₃ , the lower 7 bits A _{0 to} A ₆ are supplied with the outputs Q _{1 to} Q ₈ of the counter 8 which counts the rising edge of the clock signal CLK, and from _{0 to} 127. The operation of incrementing the count value by one is repeated. Therefore, the output waveforms of the data output terminals D _{0 to} D ₂ are, as shown in FIG. 2, high level and Lo in which one cycle is divided into 128.
It becomes a w-level duty signal. This data output depends, of course, on the addresses A _{7 to} A ₁₂ described above, and each fluorescent lamp 12R, 12G, 12 for producing a desired mixed light color.
It becomes the B dimming level signal.

Next, the toning operation by the circuit of FIG. 1 will be described. When the AC power supply 1 is turned on by turning on the power switch 3, the address in which the color data set by the color setting unit 6 is stored is output from the address setting unit 7,
Toning data storage unit 9 based on the addresses A _{7 to} A _12
2 is output to the data output terminals D _{0 to} D ₂ of the lighting device, and the toning data conversion and output unit 10 converts the duty signal into, for example, a voltage signal or amplifies the duty signal. It is converted into a dimming signal suitable for 11R, 11G, and 11B, and the fluorescent lamps 12R, 12G, and 12B are turned on at a determined dimming ratio. Reference numerals 11R, 11G, and 11B are high-frequency lighting devices, for example, which convert a duty signal input as a dimming signal into a frequency signal and change the lighting frequency to dimm the lamp. For example, adjusting the address A ₁₃ to A ₇ of the color data storage unit 9 is "0000001" color temperature 3000K when the "0001000" dimming the lamps so that the light mixing color of the color temperature 5000K when the.

The color setting section 6 is composed of, for example, an up / down switch and the like, and by appropriately operating this switch, mixed light illumination of a desired color (color temperature) can be obtained. Now, when the power switch 2 is turned on and the incandescent lamp 13 and the fluorescent lamps 12R, 12G and 12B are simultaneously lit, the address input terminal A ₁₃ of the toning data storage unit 9 becomes Hi.
It becomes gh level. Thus, it changes the address for the color setting, as described above, the address A ₁₃ to A ₇ are "1
000001 "," 1001000 "," 111111 "
The color data at this time are all set to white data of 2800K having the same color temperature as that of the incandescent lamp 13, so that the set value of the color setting unit 6 is set at the same time when the incandescent lamp 13 is turned on. Regardless, the 2800K color data is output from the toning data storage unit 9, and the toning data conversion output unit 1
Is converted into a dimming signal by 0, and the lighting devices 11R, 11
G and 11B are dimming controlled, and fluorescent lamps 12R, 12G and 1
The color temperature of 2B mixed light illumination is 2800K. As a result, the fluorescent lamps 12R, 12 are linked with the lighting of the incandescent lamp 13.
By changing the mixed light colors of G and 12B and setting the same color temperature as that of the incandescent lamp 13, it is possible to realize illumination having both a glittering feeling and an atmosphere feeling.

FIG. 3 is a block diagram of the second embodiment of the present invention. The parts having the same functions as those in the first embodiment are designated by the same reference numerals 1 to 14, and the duplicate description will be omitted. 15
Is a dimmer and is composed of, for example, a thyristor phase control circuit. Reference numeral 16 is a light color / light quantity detection unit, 17 is an A / D conversion unit, 18 is an arithmetic processing unit, and 19 is a toning data creation unit. In the present embodiment, in conjunction with the lighting of the incandescent lamp 13, the light colors of the incandescent lamp 13 are changed to the fluorescent lamps 12R, 12G, 12B.
The light color of the incandescent lamp 13 is directly detected by the light color / light quantity detection unit 16 and arithmetic processing is performed to make the mixed light colors of the fluorescent lamps 12R, 12G,
The difference from the first embodiment is that the dimming ratio of 12B is determined.

The toning operation according to this embodiment will be described below. Power switch 3 is ON, power switch 2 is OF
When F, that is, when the incandescent lamp 13 is off, the relay 4 does not operate, and its contacts 5a, 5b, 5c are connected to the data output terminals D _{0 to} D ₂ of the toning data storage unit 9. ing. The operation at this time is the same as that of the above-described first embodiment, and thus the description thereof is omitted.

Next, the power switch 2 is turned on and the incandescent lamp 1 is turned on.
When 3 is lit, the light color installed near the incandescent lamp 13
Light amount detection unit 16, A / D conversion unit 17, and arithmetic processing unit 18
Accordingly, the light color and the light amount of the incandescent lamp 13 are detected. Light color
The light amount detection unit 16 has a spectral sensitivity that is the spectral sensitivity of the human eye.
Tristimulus value X₂(X-long wavelength side peak), Y, Z sensitivity
It consists of three sensors with
Extreme value X₂, Y, Z are detected. This tristimulus value is A / D
It is input to the conversion unit 17 and becomes a digital value. Tristimulus value
The digital value of the
Chromaticity coordinates of (x ₀, Y₀) And the amount of light Y₀Is calculated and output
It This chromaticity coordinate (x₀, Y₀)
Each of the fluorescent lamps 12R, 12G, 1
The dimming ratio of 2B is determined. This dimming ratio is calculated by fluorescence
The chromaticity coordinates and light amount of the lamp 12R are (xr, yr, Yr),
The chromaticity coordinates and light amount of the light 12G are (xg, yg, Yg),
The chromaticity coordinates and the light amount of the fluorescent lamp 12B are set to (xb, yb, Y
b), the chromaticity coordinates to be matched and the light amount are (x₀, Y₀，
Y₀), It can be calculated by the following formula.
It

X ₀ = (xrYr / yr + xgYg / yg + xbYb / yb) / (Yr / yr + Yg / yg + Yb / yb) y ₀ = (Yr + Yg + Yb) / (Yr / yr + Yg / yg + Yb / yb) Y ₀ + Yb + Yb + Yr

According to the above equations, each fluorescent lamp 12R, 12
The light amounts Yr, Yg, and Yb of G and 12B are obtained. The light intensity value of 100% output of each fluorescent lamp 12R, 12G, 12B is set to Yr.
Assuming ₁₀₀ , Yg ₁₀₀ and Yb ₁₀₀ , the dimming amount of the fluorescent lamp 12R is Yr / Yr ₁₀₀ and the dimming amount of the fluorescent lamp 12G is Yg /
The light control amount of Yg ₁₀₀ and the fluorescent lamp 12B is Yb / Yb ₁₀₀ . The value of the dimming amount thus obtained is D / A converted and converted into a duty signal as shown in FIG. 2 so that the fluorescent lamp 12 has the same color as the incandescent lamp 13.
The mixed color of R, 12G, and 12B is adjusted. In the configuration of the present embodiment, the light color of the incandescent lamp 13 is directly detected by the light color / light amount detection unit 16, so that even when the dimmer 15 dimmers the incandescent lamp 13, the light color of the incandescent lamp 13 is detected. It is also possible to shift the mixed light color of the fluorescent lamps 12R, 12G, 12B following the shift of. In the description of this embodiment,
When adjusting the mixed color of the fluorescent lamps 12R, 12G, and 12B, the light amount was set to the light amount Y _{0 of the} incandescent lamp, but it is not limited to this, and it goes without saying that it can be set to any light amount.

FIG. 4 is a block diagram of a third embodiment of the present invention. The parts having the same functions as those of the second embodiment are designated by the same reference numerals 1 to 18, and the duplicate description will be omitted. 19
Reference numeral H is a correction data creation unit, 20 is a current limiting choke, 21 is a dimming detection circuit, and 22a, 22b and 22c are contacts of relays in the dimming detection circuit 21. In this embodiment, instead of the incandescent lamp 13 as a point light source with high brightness, a HID lamp 13H (for example, "Hikalight" (trade name) and "Skybeam" (trade name) which are HID lamps manufactured by Matsushita) is used. ) Is used. When dimming such an HID lamp, the light color changes greatly due to changes in gas pressure. For example, in the case of a hiker light, when it is dimmed, the redness becomes stronger and the sky beam becomes stronger in blue. Therefore, in this embodiment, in order to compensate the entire light color, the fluorescent lamp 12
The R, 12G, and 12B mixed color lights are shifted to opposite colors. For example, in the case of hiker light, fluorescent lamp 12
The mixed color light of R, 12G, 12B is shifted to the blue side, and in the case of the sky beam, the mixed color light of the fluorescent lamps 12R, 12G, 12B is shifted to the red side.

Hereinafter, the toning operation in this embodiment will be described.
explain. First, the power switch 2 is turned off and the HI
Contact of relay 4 when D lamp 13H is off
5 is connected to the ground side, and is stored in the color-matching data storage unit 9.
Dress input terminal A₁₃Is a low level. Also dimming
The relay contacts 22a, 22b, 22c of the detection circuit 21 are adjusted.
Data output terminal D of the color data storage unit 9₀~ D₂Connected to
Has been. The operation in this case will be described in the first embodiment described above.
Since it is as described above, duplicate description will be omitted. next,
The power switch 2 is turned on and the HID lamp 13H is turned on.
When lit, the contact 5 of the relay 4 is connected to the power supply side,
Address input terminal A of color data storage unit 9 ₁₃Is high
Become a bell. Here, when the HID lamp 13H is fully lit
The dimming detection circuit 21 does not operate,
The ray contacts 22a, 22b, 22c are the toned data storage unit 9
Data output terminal D₀~ D₂It is connected to the. This place
The combined operation is also as described in the first embodiment,
Address A₁₃~ A₇The data corresponding to are all HID
Same color temperature as lamp 13H
It is set to white data of 2500K), and HID run
Each fluorescent lamp 12R, 12 so that it becomes the same color as
G and 12B are turned on and the colors are mixed. Also, HID lamp 1
When 3H dimming, the relay of dimming detection circuit 21 operates
The relay contacts 22a, 22b, 22c are
It is connected to the output of the data generator 19. At this time, light color / light
The quantity detector 16, the A / D converter 17, and the arithmetic processor 18
Therefore, the data of the light amount of the HID lamp 13H is detected.
The detection operation is the same as in the second embodiment described above.
It

Now, the light color at the time of dimming the HID lamp 13H
(X₁, Y₁) And the amount of light is Y₁And Also, all lights
The light color of time is (x₀, Y₀) And the amount of light is Y₀Then,
As shown in FIG. 5, the light color is different between the dimming condition and the full lighting condition.
It Fluorescent lamps 12R, 12G, 12B mixed color light and HID light
The mixed color with the lamp 13H (x₀, Y₀) To firefly
The color mixture coordinates of the light lamps 12R, 12G, 12B are set to x = 2x₀
-X₁, Y = 2y₀-Y₁And set it. However,
Y = Y₁And In FIG. 5, line segment L₁, L ₂The distance
Are the same, and the color mixing seats of the fluorescent lamps 12R, 12G, 12B
The mark (x, y) is the light color coordinate during dimming of the HID lamp 13H.
Mark (x₁, Y₁) And the light color coordinates (x₀，
y₀) On the straight line. Fluorescent lamp 12R, 12
Set the mixed color coordinates of G and 12B to this coordinate (x, y)
In order to do so, the dimming ratio of the fluorescent lamps 12R, 12G, 12B
Can be obtained using the mathematical formula described in the second embodiment.
This calculation is performed by the correction data creation unit 19H
The data of the adjusted dimming ratio is D / A converted, as shown in FIG.
By converting into a duty signal, the fluorescent lamp 12R,
Whole of 12G and 12B mixed color light and HID lamp 13H
The mixed color light is the light color when the HID lamp 13H is fully lit.
To be kept. In this way, the dimming lighting of the HID lamp 13H
By changing the light color of the fluorescent light mixed color in conjunction with
Therefore, the overall light color does not change even if the dimming depth changes.
Good control is achieved.

FIG. 6 is a block diagram of the fourth embodiment of the present invention. The configuration is the same as that of the third embodiment described above except that the relay 4 and its contact 5 are removed. In this embodiment, the HID lamp 13H is used as the point light source, and the light color of the fluorescent mixed light is changed in association with the dimming lighting of the HID lamp 13H.
When H is extinguished and when it is all lit, the fluorescent light mixed color light can be set to any light color without interlocking with the HID lamp 13H. When the HID lamp 13H is in the dimming lighting state, the mixed color of the fluorescent light mixed color light and the HID lamp in the dimming lighting state is the mixed color of the HID lamp 13H at all lighting and the fluorescent lamp set at that time. The color shift at the time of dimming the HID lamp 13H is compensated by changing the light color of the mixed light of the fluorescent lamp so that the mixed color with the light is obtained.

The toning operation according to this embodiment will be described below. During off time and full lighting of the HID lamp 13H, without operation relay dimmer detection circuit 21, the relay contacts 22a, 22b, 22c is connected to the data output terminal D ₀ to D ₂ toning data storage unit 9 ing. In this case, the operation of the fluorescent lamp 12 is as described in the first embodiment.
The R, 12G, and 12B mixed-color lights are not interlocked with the HID lamp 13H, and the address in which the color data set by the color setting unit 6 is stored is output from the address setting unit 7, and the color adjustment is performed based on the address. A duty signal as shown in FIG. 2 is output from the data output terminals D _{0 to} D _{2 of the} data storage unit 9, and the toning data conversion output unit 10 converts it into a dimming signal suitable for the lighting devices 11R, 11G, and 11B. Is
The fluorescent lamps 12R, 12G, and 12B are turned on at a predetermined dimming ratio, and a desired mixed color light is obtained.

Next, the HID lamp 13H is dimmed and turned on.
In case of light, the light color / light quantity detection unit 16 and the A / D conversion unit 17
And the chromaticity of the HID lamp 13H by the arithmetic processing unit 18.
Mark (x₀’, Y₀’) And light intensity Y₀'Is calculated and output.
After that, based on the flow of FIG.
The correct data creation unit 19H operates. I will explain this in detail
Then, when the HID lamp 13H is dimmed, it is stored in advance.
Chromaticity coordinates when all HID lamps 13H are turned on
(X₀, Y₀) And the color of the fluorescent light that is set when all lights are turned on
Degree coordinate (x₁, Y₁) From HID lamp 13H and fluorescent
Chromaticity coordinates of the overall mixed color of the lamps 12R, 12G, 12B
(X₂, Y₂) Is x₂= (X₀+ X₁) / 2, y₂=
(Y₀+ Y₁) / 2. And this color
Degree coordinate (x ₂, Y₂) HID lamp
At the dimming lighting of 13H, the detected color coordinate (x₀’,
y₀′), The chromaticity coordinates (x₁’,
y₁') Is corrected by the following equation. x₁’= X₀+ X₁-X₀’ y₁’= Y₀+ Y₁-Y₀’

FIG. 7 shows a chromaticity diagram which is a premise of the above calculation.
did. L in the figure₁= L₂, L₃= L _FourHave a relationship. Na
Oh, here, for simplification, the fluorescent lamps 12R, 12
G, 12B mixed color light and HID lamp 13H light intensity are all points
Assuming that it is the same in both lighting and dimming lighting
There is.

In the above embodiments, the high-frequency lighting device is exemplified as the lighting device, but it may be a low-frequency alternating current lighting device, a direct current lighting device, or a combination of a plurality of independent lighting devices. Alternatively, a plurality of lighting devices that are integrated may be used. Further, regarding the dimming method, although the dimming is performed by the duty signal in the above-described embodiment, the dimming may be performed by the DC signal or the phase control signal. Furthermore, as the type of fluorescent lamp, a color lamp having different phosphors in the lamp is used in the embodiment, but other than this, for example, a color tube or a color filter may be used. As for the color of the light source, a combination of white (light bulb color, white, daylight color) or the like may be used in addition to R, G, and B. In addition, the light color / light quantity detection unit may detect not only the light color / light quantity of only the HID lamp or the incandescent lamp but also the entire light color of the lighting device and perform feedback control. As for the arithmetic processing means, instead of calculating the corrected color at once using the above-mentioned mathematical formula, the dimming level may be gradually changed while monitoring the overall light color. Regarding the types of point light sources, incandescent lamps (including mini halogen lamps) and HID
(High-pressure sodium lamp, multi-halogen lamp, mercury lamp, etc.)
Besides, any light source with high brightness may be used. The number of point light sources may be one or plural. Furthermore, the light color of the point light source may be detected for only one of them, or the light color of the entire point light source may be detected.

In each of the above-mentioned embodiments, the point light source and the surface light source are integrated as an instrument. However, when there are a plurality of these instruments, the point light source or the point light source of one of the instruments is selected. A light color detection unit may be provided only for the whole light, and the light color of the variable color lighting device of each fixture may be controlled so that the detected light color is obtained. In that case, variations in the light color of the point light source (for example, HID
Even if there is a lamp variation), since one light source is used as a reference, the variation in the light color of the variable color lighting device is eliminated.

[0028]

According to the invention described in claim 1, when the variable color lighting device using the fluorescent lamps of plural colors is turned on at the same time as the point light source.
In this case, the mixed color light of the variable color lighting device is matched with the color of the point light source having high brightness, whereby the effect of utilizing the glitter of the point light source having high brightness and keeping the atmosphere of the field is obtained.

In the invention of claim 2 or 3, when the variable color lighting device using the fluorescent lamps of a plurality of colors is used in combination with the high-intensity discharge lamp, the color shift due to the dimming lighting of the high-intensity discharge lamp is caused. There is an effect that the mixed color light of the fluorescent lamp is compensated for and the overall mixed color can be maintained at a desired color.

[Brief description of drawings]

FIG. 1 is a block circuit diagram of a first embodiment of the present invention.

FIG. 2 is an operation waveform diagram of the 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 block circuit diagram of a third embodiment of the present invention.

FIG. 5 is an operation explanatory diagram of the third embodiment of the present invention.

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

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

FIG. 8 is a flowchart showing the operation of the fourth embodiment of the present invention.

[Explanation of symbols]

1 AC power supply 2 power switch 3 power switch 4 relays 5 Relay contact section 6 color setting section 7 Address setting section 8 counter 9 Toning data storage 10 Toning data conversion output section 11R lighting device 11G lighting device 11B lighting device 12R fluorescent lamp (red) 12G fluorescent light (green) 12B fluorescent light (blue) 13 incandescent lamps 14 Light source

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H05B 37/02 F21S 2/00 H05B 35/00 H05B 41/36

Claims (3)

(57) [Claims] 1. A lighting device in which a variable color lighting device for dimming a plurality of fluorescent lamps having different emission colors to obtain arbitrary color-mixed light and a point light source having high brightness are combined, wherein the point light source comprises:
When the variable color lighting device is turned on at the same time, means for controlling the mixed color of the variable color lighting device is provided so as to match the light color of the point light source in conjunction with the lighting state of the point light source. Characteristic lighting device. 2. A lighting device in which a high-intensity discharge lamp and a variable-color lighting device for dimming a plurality of fluorescent lamps having different emission colors to obtain an arbitrary color mixture light are combined, and the high-intensity discharge lamp is fully turned on. At the time, the means for interlocking the mixed color of the variable color lighting device so as to match the light color of the high-intensity discharge lamp, and when the high-intensity discharge lamp is dimmed, An illuminating device comprising means for correcting the mixed color of the variable color illuminating device so that the light color matches the light color of the high-intensity discharge lamp when fully lit. 3. A lighting device in which a variable-color lighting device for dimming a plurality of fluorescent lamps having different emission colors to obtain arbitrary color-mixed light and a high-intensity discharge lamp are combined, and the high-intensity discharge lamp is fully turned on. And a means for setting the mixed color of the variable color lighting device to an arbitrary mixed color, and the light color of the entire lighting device when the high-intensity discharge lamp is dimmed and turned on. An illuminating device comprising means for correcting the mixed color of the variable color illuminating device so as to maintain the mixed color of the variable color illuminating device and the light color of the high-intensity discharge lamp at full lighting. .