JPH103991A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system which can be used as main illumination without deteriorating workability, which provides eye catching effect to a user, and which visually provides a sense of relief. SOLUTION: A lighting system is provided with three luminaires 101 -103 provided with three light sources 11a1 ..., and a control part 1 to light the light sources 11a1 ..., and change their quantity of light. The control part 1 detects a zero-cross point of an AC power source AC by a zero-cross detection part 3, and controls the turn-on phase of switching elements Qa-Qc comprising triacs based on trigger signals from a control circuit part 4. The control circuit part 4 changes the quantity of light of each light source 11a1 ... with delay for a specified delay time in accordance with a light quantity change pattern which monotonicly and periodicly changes between an upper limit value and a lower limit value. Illuminance at a work surface can thus be kept roughtly constant even when the system is used for main illumination, and such an impression that light of the light source 11a1 ... is oscillating can be provided to generate eye catching effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device for monotonously and periodically changing the light amounts of a plurality of light sources.

[0002]

2. Description of the Related Art Hitherto, there has been provided an illuminating device in which the amount of light from a plurality of light sources is varied to produce a special effect. For example, in a lighting device using a fluorescent lamp as a light source, in order to suppress flicker of illuminance on a work surface due to a flicker phenomenon when used as a main lighting for illuminating a work surface where a user performs work such as work or reading. ,
There is a lamp having a so-called flickerless function in which a plurality of fluorescent lamps are used to shift the phase of a voltage applied to each fluorescent lamp.

In addition, the present applicant has already proposed a lighting device which gives a user a visually comfortable feeling and which does not cause a problem such as flickering of the illuminance on a work surface even when used as a main lighting (Japanese Patent Application Laid-Open No. H11-163873). No. 6-321039). This illuminating device changes the amount of light of a light source included in the illuminating device in accordance with a fluctuation having a spectrum that is substantially inversely proportional to the frequency f (1 / f) (hereinafter, referred to as 1 / f fluctuation). The illuminance change on the illuminated surface is made substantially constant while giving a visual comfort to the user.

[0004]

However, in the former conventional example, since the change in the light amount of the light source is synchronized with the frequency of the power supply voltage, the fluctuation speed is high and the fluctuation width is small.
Further, it is not possible to obtain a so-called eye-catching effect in which a change in the amount of light of the light source is positively shown to the user and attracts the eyes of the user.

[0005] Further, in the latter conventional example, it is possible to prevent a decrease in workability when used as a main illumination.
The main purpose of the visual aspect is to provide a comfortable feeling, and no consideration is given to the eye catch effect by giving the user a fluttering feeling or producing gorgeousness. Can not be actively aware of changes in light. Further, since the fluctuation characteristic follows the 1 / f fluctuation, there is a disadvantage that the period and the fluctuation width of the fluctuation are relatively close to random, and the configuration and control become complicated.

The present invention has been made in view of the above problems, and has as its object to reduce the workability even when used for main lighting and to provide an eye catch effect to a user. It is an object of the present invention to provide a lighting device that can provide the user with a sense of security.

[0007]

In order to achieve the above object, the present invention provides a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the light amount of each light source. Wherein the control means controls the lighting means so that at least one of the plurality of light sources changes in light quantity according to a light quantity change pattern that is monotonously and periodically changed between two light quantities of an upper limit and a lower limit. In addition, the illumination means controls the lighting means so that the other at least one light source sequentially changes the light amount in accordance with the light amount change pattern at predetermined time intervals. Even when the main light source is used, the illuminance on the work surface is substantially reduced. Since it is constant, the workability is not reduced, and the user is provided with an eye-catching effect such as a flickering feeling and gorgeousness due to a change in the amount of light and is visually comfortable. It can give the feeling.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

 (Embodiment 1) FIG. 1 is a block diagram showing a first embodiment of the present invention.
It is a lock figure. The lighting device according to the present embodiment is incandescent.
Light source 11a like a lamp₁~ 11c₁, 11a_Two~ 11c
_Two, 11a_Three~ 11c_Three3 each having three
Table lighting equipment 10₁-10_ThreeAnd AC like commercial power
Power supply AC and lighting equipment 10₁-10_ThreeInserted between
Lighting device 10₁Each light source 11a₁Change the amount of light
It is composed of a control unit 1. Here, in this embodiment,
Lighting equipment 10₁-10_ThreeIs shown in FIGS. 2 and 3.
A substantially diamond-shaped appliance body 12 attached to the ceiling a;
Three rod-shaped support portions 13 suspended from the instrument body 12
And a light source 11a at the lower end of each support portion 13. ₁~ 11c₁
Is a so-called chandelier-type lighting fixture in which
For example, it may be built into the appliance body 12 or at another location (wall
, Etc.) is controlled by the control unit 1.

The control unit 1 converts the AC voltage from the AC power supply AC into a predetermined DC voltage and supplies it to each unit.
A zero-crossing detecting unit 3 for detecting a zero-crossing point of an AC voltage, a control circuit unit 4 comprising a microcomputer and constituting a control unit, and switching elements Qa to Qc comprising a triac and constituting a lighting unit. I have. The light source 11 included in each of the lighting fixtures 10 ₁ to 10 ₃
a ₁ , 11a ₂ , 11a ₃ ,... are connected in parallel with each other, and are connected to an AC power source A via a switching element Qa.
It is connected to both ends of C.

Further, the zero-cross detecting unit 3 is provided with an AC power supply AC.
And outputs a detection signal to the control circuit unit 4. Upon receiving the detection signal from the zero-crossing detection unit 3, the control circuit unit 4
output a dimming signal (trigger signal) to a to Qc to turn on the switching elements Qa to turn on the light sources 11a ₁ ... Then, the switching element Q
a ... turns off. That is, the control circuit unit 4 repeats the above-described operation to switch the switching elements
The light source 11 is controlled by controlling the phase in which the light source 11 is turned on.
The so-called phase control for changing the light amount of a ₁ .

The control circuit section 4 changes the light amounts of the light sources 11a ₁ ... In accordance with a light amount change pattern set in advance. This light amount change pattern is created so as to be monotonously and periodically changed between two light amounts of an upper limit value UL and a lower limit value LL, as shown in FIG. ing. Incidentally, t _f is the time required to fade out to lower the fade in or upper limit UL increase the amount of light from the lower limit LL to the upper limit UL to the lower limit LL (hereinafter. Referred to as "fade time") represents.

T = 2t _f × the total number of light sources per lighting device (Equation 1) Further, the light sources 11a ₁ are continuously lit at the upper limit value UL of the light amount (hereinafter, referred to as “upper limit continuous lighting”). If the time when light is continuously lit at the lower limit LL of the light amount (hereinafter, referred to as “lower continuous light”) is set as the upper continuous light time t _H and the lower continuous light time t _L , respectively, at the same time, Using the number of light sources 11a _1, which are continuously lit at the upper limit (the number of continuously lit light sources) and the number of light sources 11c _1, which are continuously lit at the same time at the same time (the number of continuously lit light sources), And Equation 3.

T _H = T × (upper limit number of continuously lit light sources / total number of light sources per lighting fixture) −t _f (Equation 2) t _L = T × (lower limit continuously lit light source number / per lighting fixture) in the case of the total number of light sources) -t _f ... (equation 3) in the present embodiment, the light source 11a ₁ ... number of all light sources per one luminaire 10 ₁ to 10 ₃ 3, upper continuous lighting source number Is 2, and the lower limit continuous lighting light source number is 1.
From the above equations 1 to 3, the cycle T, the upper limit continuous lighting time t _H, and the lower limit continuous lighting time t _L are obtained as follows.

[0014] _{T = 6 × t f t H} = 3 × t f t L = t f Further, the light source 11 to the luminaire 10 ₁ to 10 ₃ is provided
a ₁ ... light source 11a ₁ which is connected to the switching element Qa among, 11a _2, 11a ₃ in the pattern shown in FIG. 4 (a), the light source 11b that is connected to the switching element Qb
₁ , 11b ₂ and 11b ₃ have the pattern shown in FIG.
The control circuit unit 4 outputs a dimming signal (trigger signal) to each of the switching elements Qa to Qc so that c ₁ , 11c ₂ , and 11c ₃ change the light amount in the pattern shown in FIG. I do. At this time, the control circuit unit 4 outputs the same dimming signal to each of the switching elements Qa~Qc while delaying by two times the delay time t _d of the fade time t _f (FIG. (A) ~ (c) refer) . That is, outputs a dimming signal to the switching element Qa, after the delay time t _d has elapsed from the start of the fade-in of the light source 11a ₁ from the lower limit LL to the upper limit UL, 11a _2, 11a _3, the switching element Qb The light source 11 outputs exactly the same dimming signal and
b ₁ , 11b ₂ , and 11b ₃ start to fade in, and after a lapse of a delay time t _d from there, the switching element Q
c to output the same dimming signal to the light sources 11c ₁ and 11c.
c _2, and a fade-11c ₃ is started.

As described above, by controlling the plurality of light sources 11a ₁ ... Sequentially according to the same light amount change pattern by the delay time t _d , the light amount of the entire illuminating device can be made substantially constant at all times. As a result, FIG.
As shown in (d), even when used for the main illumination, the illuminance on the work surface becomes substantially constant irrespective of a change in the light amount of each light source 11a ₁ . Can be prevented. Moreover, each lighting fixture 10a
10c are periodically changed while interlocking with the light amounts of the light sources 11a ₁ ..., Respectively, so that a person watching the light sources 11a ₁ . it can.

By the way, the fade time required for fade-in and fade-out in the light amount change pattern and the width (light amount difference) of the light amount change from the upper limit to the lower limit can be arbitrarily set. The conditions for obtaining a suitable fade time and light amount difference were derived based on the evaluation experiment according to. This evaluation experiment using the illumination device of the present embodiment for changing the plurality of light sources 11a ₁ ... quantity of in accordance with light amount change pattern shown in FIG. 4, the various fade time t _f and light amount difference with respect to 29 subjects The scene illuminated by the lighting device is shown while changing to the above, and the impression is evaluated on a seven-point scale with respect to the 21 items shown in FIG. FIG. 6 shows the result of performing a factor analysis on all the evaluation data obtained by the experiment.
Shown in

[0017] In FIG. 6, the horizontal axis represents the fade time t _f, the vertical axis represents the light amount difference. Light amount difference
a ₁ ... a represents the difference between the upper limit UL and lower limit LL when the 100% light quantity when is lit rating. According to the results of this experiment, in order to give an eye catching effect such as a flickering feeling of light and a gorgeousness to a user watching the lighting, the gradient of the fade (= light amount difference / fade time [% / sec]) should be at least 30% /%. sec], and in order to prevent the user from feeling uncomfortable or uneasy due to a drastic change in the amount of light, the inclination of the fade should be 15 degrees.
The light amount change pattern may be set so as to be 0 [% / sec] or less. Preferably, the slope of the fade is 40%
/ Sec] or more and 120 [% / sec] or less. Further, in order to be able to see the lighting person to clearly recognize the light source 11a ₁ ... light amount change of the fade time of the light source 11a ₁ ... amount of variation in the time of the upper limit UL of the light amount change to 100% Is set to be at least 30% or more, and the light amount change pattern is set in advance so that the fade time (time required for fade-in and fade-out) is about 1.5 sec or less. The light amount change pattern as described above is set as a program of a microcomputer provided in the control circuit unit 4, and the control circuit unit 4 controls the light amount according to the light amount change pattern by executing the program by the microcomputer. It can be performed.

As described above, the light source 11 of each of the lighting fixtures 10a to 10c follows the light amount change pattern based on the evaluation experiment.
By changing the a ₁ ... quantity of the light source 11a ₁ ...
The eye-catching effect can be reliably achieved without the light shaking emitted by the viewer giving a feeling of discomfort or anxiety to the viewer. In this embodiment, three light sources 11
are provided with three lighting fixtures 10a to 10c each having a ₁ , and the light quantity change pattern is determined assuming that the total number of light sources is 3, the upper limit continuous lighting source number is 2, and the lower limit continuous lighting source number is 1. The number of light sources, the number of light sources provided in one lighting fixture 10a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited to these, and any number can be selected. For example, FIG. 7 to FIG. 10 show examples of some light amount change patterns set based on the above-described equations (1) to (3). FIG. 7 shows the light amount change pattern when the total number of light sources is 2, the upper limit continuous lighting source number is 1, and the lower limit continuous lighting source number is 1, and FIG. 8 is the total light source number 4, the upper limit continuous lighting source number is 3, and the lower limit. FIG. 9 shows the light amount change pattern when the number of continuously lit light sources is 1, and FIG.
FIG. 10 shows a light amount change pattern when the lower limit continuous lighting light source number is 2, and FIG. 10 shows a light amount change pattern when the total lower light source number is 4 and the lower limit continuous lighting light source number is 2. As described above, depending on how the total number of light sources is set to 2 or more and the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are allocated, the light amount change patterns are different in accordance with the above-described equations (1) to (3). . Further, these settings can be changed even while the light sources 11a ₁ ... Are turned on, and the fade time t _f can be freely selected. Even if the fade time t _f is changed, the light amount change pattern itself is not changed. Although it does not change, the effect obtained thereby differs.

In general, if the upper limit number of continuous light sources is set to be larger than the lower limit number of continuous light sources, the light quantity of the entire lighting device can be increased, and it is sufficient even when used as main lighting. Illuminance can be obtained, and the room can be brightly illuminated. In addition, if the upper limit continuous lighting source number is set to be smaller than the lower limit continuous lighting source number with respect to the total number of light sources, it is possible to produce a flickering light having an impact, and further enhance the eye catching effect for a viewer of the lighting. There is an advantage that can be.

It is also possible to change the order of the light sources 11a ₁ to be turned on in each of the lighting devices 10a. Further, regarding the configuration of the control unit 1, each lighting fixture 1
The configuration of the present embodiment is not limited as long as it is possible to control the light amount of each of the light sources 11a ₁ . Also, the lighting fixtures 10a are not limited to the chandelier type of the present embodiment, and for example, FIG.
Any type of lighting equipment, such as a hanging lighting equipment 10 'as shown in FIG. Further, in the present embodiment, the light source 11a
₁ uses a light bulb such as an incandescent lamp, but it goes without saying that a light source other than a light bulb such as a fluorescent lamp (straight tube type, so-called compact type, ring type, etc.) may be used. Absent. Also, the creation of the light quantity change pattern using the above-described equations 1 to 3 is an example, and it is possible to create the light quantity change pattern without depending on these equations 1 to 3.

(Embodiment 2) In Embodiment 1, a configuration in which a plurality of luminaires 10a are provided with the same number of light sources 11a ₁ has been described. In this embodiment, as shown in FIG. And a plurality of two types of lighting fixtures having different numbers. However, since the configuration of the control unit 1 is the same as that of the first embodiment, the illustration is omitted.

[0022] In this embodiment, as shown in FIG. 12 three light sources 11a ₁ ~11a _3, a lighting fixture 10a~10d of four having a ..., five light sources 14a ₁ to 14A _5,
, And three lighting devices 13a to 13c,
Lighting fixtures 10a to 10d, 13 of the same type having the same number of light sources
Each of the light sources 11a _1, ..., 14a _1, ..., 14a ₁ , according to the light amount change pattern shown in FIG.
Is linked to perform dimming control. As described in the first embodiment, since the number of the light sources 11a _1, ..., 14a _1, ... Differs, the cycle T, the upper limit continuous lighting time t _{H, and the} like differ in the light amount change patterns shown in FIG. Come.

[0023] Therefore, two types of luminaires 10a~10d in the present embodiment, by substantially equal to the fade time t _f in each of the light amount change pattern 13 a to 13 c (see FIGS. 13 and 14), lighting equipment 10a
..., the light source 11a ₁ ... when viewed 13a ... as a whole,
Since the speed of the change in light and dark (change in the amount of light) of 14a ₁ ... is kept almost constant, it is provided to the viewer (user) of the lighting,
The gorgeousness can be produced without giving a sense of incongruity to the fluctuation of light.

In this embodiment, the lighting fixtures 10a having three light sources 11a ₁ as two kinds of lighting fixtures.
, A lighting fixture 13a having five light sources 14a ₁ .
Are exemplified, but, for example, the number of light sources is 2
A plurality of types of lighting fixtures having different numbers of light sources, such as a combination of one lighting fixture and four light sources, or a combination of four lighting sources and six lighting sources, etc. The technical idea of the present invention is applicable to all combinations of the above.

(Embodiment 3) In this embodiment, the three light sources 1 shown in FIG.
The light emitting device 10a including the light sources 1a ₁ and the light emitting device 13a including the five light sources 14a ₁ shown in FIG.
Are different from the second embodiment in that That is, as shown in FIGS. 15 and 16, are set to different values both fade time t _f as the period T coincides.

As described above, the lighting fixtures 1 having different numbers of light sources
0a,..., 13a...
₁ ..., 14a will _{be 1} ... is turned on, there is an advantage that it can be reassuring to the see the lighting person (user). Also in the case of the present embodiment, the technical idea of the present invention can be applied to any combination of a plurality of types of lighting fixtures having a plurality of light sources and different numbers of light sources, similarly to the second embodiment.

(Embodiment 4) In the above-described Embodiments 1 to 3, a configuration having a plurality of lighting fixtures having a plurality of light sources has been described as an example. It is characterized in that a plurality of combinations of light sources that change the light amount according to different light amount change patterns are set for each of the luminaires, and dimming control is performed so that each combination changes the light amount independently of each other. .

As shown in FIG. 17, in the present embodiment, a lighting fixture 15 having _nine light sources 16 _{1 to} 169 and a control unit 1 (not shown) similar to the first embodiment are provided. the third group including one source _{161-164 9} first group G ₁ including the light source 16 ₁ to 16 _3, the second group G ₂ and the light source 16 _{7-16 9} including a light source 16 _{4-16 6} G ₃ two sets separately, so as to control the amount of light in accordance with the same light intensity change pattern and the light amount change pattern of the three light sources 11a ₁ ～11A _3, for ... described in the first embodiment for each group G ₁ ~G ₃ ( 18 to 20). However, a light amount change pattern of the first group G ₁ shown in FIG. 18 is identical to the light amount change pattern of the third group G ₃ shown in FIG. 20, a second group shown in FIG. 19 light amount change pattern of G ₂ is that the period T and the upper limit UL or lower limit LL or the like differently from the other two. Further, the light sources 16 _{1 to} 16 ₉ of the groups G _{1 to} G ₃ are used.
Are controlled independently of each other by a control unit 1 (not shown).

According to the present embodiment, each group G ₁ -G
_As described in the first embodiment, the total light amount of each light source ₃ is always substantially constant.
₁ total amount of to 16 ₉ becomes always substantially constant no time variation, it is possible to eliminate the fluctuation of illuminance on the working surface. Moreover, by changing the light amount change pattern of each of the groups G _{1 to} G ₃ , the light amount on the work surface (that is, the illuminance on the work surface) can be arbitrarily adjusted. Further, the present embodiment is effective in a case where it is desired to suppress the impression of the periodic fluctuation of light to a person (user) who views the illumination or in a case where it is desired to push out the glittering feeling strongly.

In the present embodiment, the number of light sources 16 ₁ is nine, but this is not a limitation, and the number of light sources 16 _{1 to be} combined may not be three. Further, even if the number of light sources of all the groups G _{1 to} G ₃ is not made equal and a group including a different number of light sources exists, the same effect as that of the present embodiment can be obtained. Further, the light sources to be combined are not limited to within the same lighting fixture 15, and may be combined, for example, over a plurality of lighting fixtures, and the order in which the light sources are turned on may be different for each combination. Also,
As long as the total amount of light from all the light sources does not vary with time and is substantially constant, any light amount change pattern other than the light amount change patterns shown in FIGS. 18 to 20 may be used. Furthermore, not all groups G ₁ ... need to be controlled independently,
An interlocking combination may be included.

(Embodiment 5) In this embodiment, one or a plurality of light sources among a plurality of light sources are continuously lit at a constant light quantity without temporal variation, and the other light sources are described in the first embodiment.
The feature is that the light amount is controlled according to the same light amount change pattern as described in (1). FIG. 21 shows a lighting device 17 according to the present embodiment, in which five light sources 1 are provided.
It is equipped with a 8 _{1-18 5.} However, since the control unit 1 that controls the dimming of each light source 18 ₁ is common to the first embodiment, the illustration and description are omitted. In this embodiment, five light sources 18 _1-18 two light sources 18 ₄ out of _5, 18 ₅
With always be continuously lit by constant amount of light without temporal variations as shown in FIG. 22 (b) and (d) for, for the remaining three light sources 18 _{1-18 3} 22
As shown in (a), (c), and (e), the light amount is controlled according to the same light amount change pattern. That it is, becomes substantially constant without Similarly temporal variation amount of the total by three light sources 18 _{1-18 3} also in the first embodiment. As a result, the total amount of light of the lighting fixture 17 as a whole is always substantially constant without fluctuation over time, and fluctuations in illuminance on the work surface can be eliminated.

As described above, according to this embodiment, for example, a lighting fixture having a large number of light sources can produce a flickering feeling only around the lighting fixture, or conversely, only the inside of the lighting fixture can be shaken to suppress the gorgeousness. There is an advantage. The number of light sources that are continuously turned on at a constant light amount and the light amount are not limited to the case of the present embodiment, and can be set to an arbitrary number and a light amount. The number can also be arbitrarily selected. Also,
The combination of the light sources for controlling the light amount so as to follow the light amount change pattern may extend over a plurality of lighting fixtures, and the order in which the light sources are turned on may be different from that of the present embodiment.

(Embodiment 6) This embodiment is shown in FIG.
Three light sources 20 each₁Three lights with ...
Instrument 19₁~ 19_ThreeAnd has the same configuration as the first embodiment.
The same light amount change pattern.
A light source for controlling the amount of light according to the₁
~ 19_ThreeAnd each combination
Light source 20₁Specially, the number of
There is a sign. That is, in the present embodiment, the lighting fixture
19₁One light source 20 included in₁Is shown in FIG.
Dimming control in accordance with the changed light amount pattern
9₁One light source 20 included in _TwoAnd lighting equipment 19_TwoGag
One light source 20 to be provided_FourIs the light amount change shown in FIG.
Dimming control in accordance with the pattern₁Equipped
One light source 20_ThreeAnd lighting equipment 19_TwoOne that has
Light source 20_FiveAnd lighting equipment 19_ThreeOne light source 2 included in
0₇Means the light amount change pattern shown in FIG.
Dimming control and lighting equipment 19_TwoOne light source 20 included in
₆And lighting equipment 19_ThreeOne light source 20 included in₈Same as
Dimming control according to the light amount change pattern shown in FIG.
And lighting equipment 19_ThreeOne light source 20 included in₉Is the same figure
Dimming control is performed according to the light amount change pattern shown in (e).
It has become.

Here, the light amount change patterns shown in FIGS. 24 (b) and (d) are halved with respect to the light amount change patterns shown in FIGS. In the light amount change pattern shown in FIG. 9C, each light amount change pattern is set so that the light amount becomes one third. Thus, by controlling the amount of light emitted from each light source 20 ₁ to 20 ₉ to vary according to the respective light intensity change pattern, the total amount of the entire lighting system becomes always substantially constant no time variation, the illuminance on the working surface The shaking can be eliminated. Further, in this embodiment the light source 20 ₁ ... a plurality of lighting fixtures 19 ₁ to vary the amount of light in accordance with the same light intensity change pattern
Since set across 19 _3, there is also an advantage that it is possible to emphasize the luxury and dynamic impression.

It is sufficient that at least one light source is dimmed and controlled in accordance with the same light amount change pattern, so that the light amount of the entire illuminating device is always substantially constant without temporal variation. If the light amount of each light source is adjusted, it can be set arbitrarily. Light source 2
0 ₁ ... the order of lighting the may be different from the present embodiment.

(Embodiment 7) In this embodiment, as shown in FIG. 25, a lighting fixture 21a having one light source 22a,
Lighting devices 21b and 8 each having four light sources 22b.
The lighting fixture 21c including the three light sources 22c... Is arranged concentrically, and the control unit 1 (not shown) having the same configuration as that of the first embodiment changes the light source 22a included in the lighting fixture 21a to FIG. In the light intensity change pattern shown,
The light sources 22b of the lighting fixture 21b follow the light quantity change pattern shown in FIG. 3B, and the light sources 22c of the lighting fixture 21c follow the light quantity change pattern shown in FIG. It is characterized in that the light amount is controlled for every .about.21c. Here, each light source 22a, 2
The light sources in the light amount change pattern of one light source 22a correspond to the numbers of the two light sources 2b.
The upper limit value UL and the lower limit value of each light quantity change pattern are set so that the light quantity in the light quantity change pattern of 2b... LL and the like are set (see FIGS. 26A to 26C).

According to the present embodiment, each of the lighting fixtures 21a to 21a to
The light sources 22a, 22b,..., 22c... Of the light source 21c are controlled in light amount according to the respective light amount change patterns as in the first embodiment.
The total amount of light of the entire lighting device provided with 1c does not vary with time and is always substantially constant, so that fluctuations in illuminance on the work surface can be eliminated. It is sufficient that at least one light source is dimmed and controlled according to the same light amount change pattern, and at least one light source is provided for each light amount change pattern so that the light amount as a whole of the illumination device is substantially constant without temporal fluctuation. If the light amount is adjusted, it can be set arbitrarily. The order of turning on the light source 20 ₁ ... may be different from the present embodiment.

(Eighth Embodiment) FIG. 27 is a block diagram showing the present embodiment. In the first embodiment, the control block units 5a to 5c including the control circuit unit 4 of the control unit 1 and the switching elements Qa. a plurality of light sources 24a ₁ to 24
For the three lighting devices 23a to 23c provided with a ₄ ,.
A controller unit 6 that transmits a signal including timing information such as switching between a mode in which dimming is performed in accordance with a light amount change pattern and a mode in which continuous lighting is performed, via a transmission line 7, and each of the lighting fixtures 23 a to 23 c. the control block unit 5a~5c performs phase control by outputting a trigger signal to the switching element (not shown), controls the adjustment to the light sources 24a ₁ ... amount of electric power supplied from the AC power source AC ₁ of Things.

The controller unit 6 includes an AC power supply AC_TwoFrom
It operates by receiving a power supply, and is transmitted from the controller unit 6.
Signals are transmitted through the transmission line 7 to the lighting fixtures 23a to 23c.
Are received by the control block units 5a to 5c. Each control block
The lock units 5a to 5c perform phase shift based on the received information signals.
Switching between the lighting time and the control mode,
light source 24a included in a to 23c₁~ 24a_Four, 24b
₁~ 24b_Four, 24c ₁~ 24c_FiveFrom the light intensity
As shown in FIG.
Dimming control according to the The controller unit 6
Can control dimming etc. in conjunction with other lighting devices
Noh. According to the present embodiment as described above, dimming control
Control circuit and a switching device
Control blocks 5a to 5c are attached to each lighting fixture 23a to 23c.
A switch for switching the fade time and control mode
Controller 6 to reduce the number of wires.
Lighting fixtures 23a to 23c can be remotely
It is easy to control together, including interlocking with lighting equipment
Become. Further, the control block of each of the lighting fixtures 23a to 23c is controlled.
The control units 5a to 5c correspond to the control circuit unit 4 described in the first embodiment.
So that the lighting fixtures 23a to 23c have
Light source 24a₁.. And the corresponding light sources 24a₁…of
The information on the light amount change pattern and the like are stored in
Control by the control block units 5a to 5c every 3c.
Can combine multiple lighting fixtures with different numbers of light sources
In that case, there is an advantage that the configuration can be simplified. sand
In other words, the lighting device as in the present embodiment is, for example, a banquet hall.
If you apply it to a place that requires a large number of lighting fixtures like
It is valid.

In the present embodiment, the lighting fixtures 23a to 23c are connected in parallel to the controller unit 6 by the transmission line 7. For example, the control block units 5a to 5c of the lighting fixtures 23a to 23c are connected by the transmission line. The wiring may be sent, and any wiring form may be used as long as the control blocks 5a to 5c can receive signals from the controller almost simultaneously. Also,
The number of the lighting fixtures 23a is not limited to three in this embodiment, and it is needless to say that the same effect can be obtained with two or less or four or more. further,
An AC power supply AC ₁ for supplying power to the lighting fixtures 23a ...,
The AC power source AC ₂ for supplying power to the controller unit 6 may be common.

(Embodiment 9) This embodiment corresponds to Embodiment 1.
Is characterized in that the light amount of the light sources 11a ₁ is changed according to a pattern different from the light amount change pattern shown in FIG. For example, in the light amount change pattern shown in FIG. 28, the upper limit continuous lighting time t _{H is set} to zero. Eliminating the continuous lighting at the upper limit value UL in this way has the advantage that a glittering feeling due to light can be produced strongly.

Further, in the light amount change pattern shown in FIG. 29, the continuous lighting time of each light source 11a ₁ ... upper limit UL or lower limit LL of the relative fade time t _f t _H,
t _L is made relatively long, and the fade time t _f and the continuous lighting times t _H and t _L correspond one-to-two (in the case of the first embodiment, one-to-one corresponds). Such a light amount change pattern has an advantage that the period T can be lengthened while limiting the inclination of the fade.

Further, in the light amount change pattern shown in FIG. 30, an intermediate continuous lighting time t _M for continuously lighting with an intermediate value ML between the upper limit value UL and the lower limit value LL is set. In the present embodiment, the intermediate value ML is relatively the upper limit value U
Since the distance is set closer to L, the light amount of the entire lighting device can be increased. Further, at the time of fading, four of the five light sources change the light amount, and the light amount rises and falls at the same time due to the two fades having different inclinations. There is an advantage that it can be added.

In addition to the above three light quantity change patterns, for example, a light quantity change pattern having a triangular waveform or a sine waveform, or a pattern in which a fade is not a straight line but a curved line may be provided. If the light amount change patterns of all the light beams are exactly the same pattern with a delay of a fixed time, and the light amount of the entire illuminating device satisfies that there is no temporal variation and that it is always substantially constant, the technology of the present invention is achieved. Philosophy is applicable.

(Embodiment 10) This embodiment relates to Embodiment 1.
In a have a common configuration, turning on the plurality of light sources 11a ₁ ... according to light intensity change pattern as (hereinafter referred to as "fluctuation lighting".) Embodiment 1 when a constant amount of total source When lighting continuously (hereinafter, referred to as “continuous lighting”), the illuminance on the work surface is kept substantially constant in both cases. In other words, when the setting of the lighting state is changed from the fluctuation lighting to the continuous lighting, or when the setting of the lighting state is changed from the continuous lighting to the fluctuation lighting, if the illuminance on the work surface is different before and after the setting is changed, the illumination under this lighting is changed. Will give a sense of incongruity to those who work with.

Therefore, in the present embodiment, the control circuit unit 4 obtains in advance the light quantity value of the total light quantity of the light source of the entire lighting apparatus at the time of fluctuation lighting (this light quantity value is substantially constant regardless of time). The light amount of each light source is controlled so that a light amount value obtained by dividing the light amount value obtained when switching to continuous lighting by the total number of light sources is obtained from each light source. FIG. 31 shows an example of the light amount change pattern in the present embodiment, and the transition time t _T1 from fluctuation lighting to continuous lighting and the transition time t _T2 from continuous lighting to fluctuation lighting are several times the fade time t _d . . However, the transition times t _T1 and t _T2 may be set to be substantially zero and the transition may be made instantaneously, or conversely, the transition times t _T1 and t _T2 may be set longer.

In the present embodiment, the transition time t _T1 from fluctuation lighting to continuous lighting is equal to the transition time t _T2 from continuous lighting to fluctuation lighting, but both may be different. Note that the control circuit 4 controls the light amount so that the total light amount of the light source in the entire lighting device does not vary with time and remains substantially constant during the transition times t _T1 and t _T2 .

Further, in the transition from the continuous lighting to the fluctuation lighting, the starting point P ₁ of the fluctuation light quantity change pattern after the transition time t _T2 elapses is, for example, the transition immediately before the transition, that is, from the fluctuation lighting. The light amount of the light source is changed so as to coincide with the end point P ₀ of the fluctuation lighting immediately before the shift to the continuous lighting, and to continue the fluctuation light amount change pattern from the start point P ₁ to the end point P ₀ . However, the present invention is not limited to this, and the starting point of the fluctuation light amount change pattern after the transition time t _T2 has elapsed may be any point of the fluctuation light amount change pattern. Further, if the illuminance of the work surface is substantially constant without any temporal variation regardless of the transition between the continuous lighting and the fluctuation lighting, when the transition from the continuous lighting to the fluctuation lighting is performed, the transition time t _T2 is determined. As shown in FIG. 32, the light quantity change pattern of the fluctuation lighting after the passage may be different from the light quantity change pattern at the time of the immediately preceding fluctuation lighting, or the lighting order may be different. FIG. 32 shows an example of a light amount change pattern when four light sources are provided. The start time of the fade-in of each light source (fade for increasing the light amount, the same applies hereinafter) before the transition from fluctuation lighting to continuous lighting is shown. Each of the light sources is set so as to satisfy the relationship of t ₁ <t ₂ <t ₃ <t ₄ (t _d1 is a delay time), and the start time of the fade-in of each light source after the transition from continuous lighting to fluctuation lighting is t _{8 <t 7 <t 6 <} t 5 (t d2 is the delay time) is set so as to satisfy the relation, lighting order before and after the transition are set to be reversed.

As described above, according to the present embodiment, the change in the illuminance on the work surface before and after the transition of the lighting state can be eliminated in the mode switching between the fluctuation lighting and the continuous lighting, so that regardless of the lighting state. In addition, it is possible to provide illumination that is always comfortable on the work surface. In addition, since the viewer (user) does not get tired of the lighting, there is an advantage that unexpectedness and novelty can be added to a gorgeous impression.

In this embodiment, the light amounts of all the light sources are changed in accordance with a predetermined light amount change pattern. However, this is not always necessary. For example, when five light sources are provided, only three light sources among them are used. The light amount may be changed, and the other two light sources may be continuously turned on or off at a constant light amount. In such a case as well, if the total light quantity does not fluctuate over time and is always constant, it can be regarded as the same as the above-mentioned fluctuation lighting and can be similarly controlled.

(Embodiment 11) This embodiment relates to Embodiment 1.
It has a common configuration with that of changing the light quantity change pattern of each light source during fluctuation lighting and changing the order of lighting each light source, so that the illuminance on the work surface can be changed smoothly. There are features.

FIG. 33 shows an example of a light amount change pattern in this embodiment. At the time of fluctuation lighting before changing the light amount change pattern for the four light sources, the start time of the fade-in of each light source satisfies the relationship of t ₁ <t ₂ <t ₃ <t ₄ (t _d1 is a delay time). As well as
At the time of fluctuation lighting after the change in the light amount change pattern, the start time of the fade-in of each light source is set to t ₈ <t ₇ <t ₆ <t
₅ (t _d2 is a delay time), and the lighting order of each light source is reversed.

[0053] Further, in the transition period t _X ~t _Y changes light intensity change pattern, so the two light sources of the four sequentially lighted at a constant light intensity (see shown in FIG. 33 (a) and (b)), The light amounts of the remaining two light sources are increased with substantially the same linear inclination (see FIGS. 3C and 3D). Thus, the work surface illuminance increases the light amount change pattern after change than working plane illuminance in the light amount change pattern before the change, in the transition time required for the change (time t _X ~t _Y) is the working surface The illuminance changes linearly (see FIG. 3E).

As described above, according to this embodiment, when the lighting state is changed, the illuminance on the work surface can be changed without variation by changing the light amount change pattern during the shift time. It is possible to provide a lighting device that does not cause discomfort to a person who performs work even within a time period. In addition, since the light amount change pattern and the order of each light source are changed, there is an advantage that unexpectedness and novelty can be added to a gorgeous impression without getting tired of the viewer of the illumination.

In the case of a transition due to a change in the lighting state,
The starting point of the light quantity change pattern after the shift may be any point of the light quantity change pattern, and it is sufficient that the illuminance on the work surface is substantially constant. Further, in the present embodiment is set to several times the transition time (time t _X ~t _Y) the fade time t _d that required for changing the light intensity change pattern may be set to transition instantaneously, longer May be set.

(Embodiment 12) This embodiment is different from FIG.
A red light source 31 having a red light color as shown₁~ 31 _Three
And a green light source 32 having a green light color₁~ 32_ThreeAnd blue
Blue light source 33 having a light color of three colors₁~ 33_ThreeAnd three each
It is characterized by having the lighting equipment 30 provided, and each light source
31₁The configuration for controlling the amount of light of...
The illustration is omitted because it is common. Here, the red light source 3
1₁The chromaticity coordinates of the light emitted by ... are (0.57, 0.3
3), green light source 32₁The chromaticity coordinates of the light emitted by.
35,052), blue light source 33₁Chromaticity of light emitted by ...
The target is (0.15, 0.10), and each emits
Light whose light satisfies the relationship of 38: 60: 2 in luminous flux ratio
Source 31 ₁…, 32₁…, 33₁... is selected.

[0057] In this embodiment, red light source 31 ₁ and the green light source 32 ₂ and the blue light source 33 ₃ a first group G ₁ ', red light source 31 _3, the green light source 32 ₁ and the blue light source 33 ₂ second
Group G ₂ ', a red light source ₃₁₂ and green light source 32 ₃ and the blue light source 33 ₁ third group G _3' respectively grouped into the same amount of light changes as shown in FIG. 35 (a) ~ (c) and by changing the amount of light while shifting the delay time t _d for each of the groups G ₁ '~G _3' according to a pattern.

Therefore, the illuminance on the work surface becomes substantially constant, and the light sources 31 _1, ..., 32 ₁ ,.
The light color on the work surface where the light emitted from ₁ ... Is synthesized is approximately white, and the work surface illuminated by the lighting fixture 30 can realize the illumination without a sense of incongruity. Moreover, if you look at the light emitting surface of the luminaire 30, the light source 31 ₁ ... for each color, 32 ₁ ..., it is possible to change the colorful light by a change in 33 ₁ ... amount of.

The number of light sources, their arrangement, and light colors are not intended to be limited to the present embodiment, but can be arbitrarily selected according to the purpose of use or application. Also, the upper limit value and the lower limit value of the light amount change pattern may be arbitrarily set according to the application. (Thirteenth Embodiment) In this embodiment, as shown in FIG. 36, the light sources 31 ₁ ,.
₁ ..., 33 ₁ ... comprises a luminaire 34 with two by two, the first embodiment by the control unit 1 (not shown), respectively
The control of the light amount is performed in the same manner as described above. In this embodiment, the light amounts of the light sources 31 ₁ , 32 ₁ , 33 _1, ... Of the respective colors are changed in accordance with the light amount change pattern shown in FIG. That is, light sources 31 ₁ and 31 ₂ and 32 ₁ and 3 of the same color
2 _2, 33 ₁ and 33 ₂ shifted and duration of lighting period and the lower limit LL to be turned at the upper limit UL by the half-period for different light sources 31 of the light color ₁ ..., 32 ₁ ..., 33 ₁ ...
About it is set light amount change pattern that changes the light amount while delaying by each delay time t _d is.

According to the present embodiment, the light source 31 of each color
_{When 1} ..., 32 _1, ..., 33 _1, ..., Are lit with a fixed amount of light of the upper limit value UL or the lower limit value LL, respectively, the combined light can keep a substantially white light color. Then, 31 ₁ ... each color of the light source, 32 ₁ ..., 33 ₁ ...
By fade while delaying by the delay time t _d of the red, green and blue light intensity of each light color is always kept substantially constant. As a result, the illuminance is substantially constant in the working surface, the light source 31 ₁ ... for each color, 32 ₁ ..., 3
The light color on the work surface on which the light emitted from 3 ₁ ... Is synthesized is also stabilized, and on the work surface illuminated by the lighting fixture 30, it is possible to realize a lighting that is comfortable. Moreover, looking at the light-emitting surface of the lighting fixture 30, the light source 31 _{1 of} each color
, 32 ₁ , 33 ₁ , etc., it is possible to make a colorful change of light.

[0061]

According to the present invention, as described above, a plurality of light sources,
Lighting means for lighting these light sources, and control means for controlling the lighting means to change the light amount of each light source, wherein the control means determines that at least one of the plurality of light sources has an upper limit and a lower limit of the light amount. The lighting means is controlled so that the light amount changes according to a light amount change pattern that changes monotonously and periodically between the light amounts, and the light amount changes according to the light amount change pattern with at least one other light source being sequentially delayed at predetermined time intervals. Since the lighting means is controlled as described above, the illuminance on the work surface is substantially constant even when used for the main illumination, so that the workability is not reduced. There is an effect that an eye catch effect such as gorgeousness can be provided and a sense of security can be provided visually.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment.

FIG. 2 is an external view of the lighting fixture in the above.

FIG. 3 is a plan view of the lighting fixture in the above.

FIG. 4 is an explanatory diagram for explaining the operation of the above.

FIG. 5 is an explanatory diagram for explaining the operation of the above.

FIG. 6 is an explanatory diagram for explaining the operation of the above.

FIG. 7 is an explanatory diagram for explaining the above operation.

FIG. 8 is an explanatory diagram for explaining the operation of the above.

FIG. 9 is an explanatory diagram for explaining the operation of the above.

FIG. 10 is an explanatory diagram for explaining the operation of the above.

FIG. 11 is an external view showing another example of the lighting fixture of the above.

FIG. 12 is a plan view showing a lighting device according to a second embodiment.

FIG. 13 is an explanatory diagram for explaining the above operation.

FIG. 14 is an explanatory diagram for explaining the above operation.

FIG. 15 is an explanatory diagram for explaining the operation of the third embodiment.

FIG. 16 is an explanatory diagram for explaining the operation of the above.

FIG. 17 is a plan view showing a lighting device according to a fourth embodiment.

FIG. 18 is an explanatory diagram for explaining the above operation.

FIG. 19 is an explanatory diagram for explaining the above operation.

FIG. 20 is an explanatory diagram for explaining the above operation.

FIG. 21 is a plan view showing a lighting device according to a fifth embodiment.

FIG. 22 is an explanatory diagram for explaining the above operation.

FIG. 23 is a plan view showing a lighting device according to a sixth embodiment.

FIG. 24 is an explanatory diagram for explaining the above operation.

FIG. 25 is a plan view showing a lighting device according to a seventh embodiment.

FIG. 26 is an explanatory diagram for explaining the operation of the above.

FIG. 27 is a block diagram showing an eighth embodiment.

FIG. 28 is an explanatory diagram for explaining the operation of the ninth embodiment.

FIG. 29 is an explanatory diagram for explaining the above operation.

FIG. 30 is an explanatory diagram for explaining the operation of the above.

FIG. 31 is an explanatory diagram for explaining the operation of the tenth embodiment.

FIG. 32 is an explanatory diagram for explaining the operation of the above.

FIG. 33 is an explanatory diagram for explaining the operation of the eleventh embodiment.

FIG. 34 is a plan view showing a lighting device according to a twelfth embodiment.

FIG. 35 is an explanatory diagram for explaining the above operation.

FIG. 36 is a plan view showing a lighting device according to a thirteenth embodiment.

FIG. 37 is an explanatory diagram for explaining the above operation.

[Explanation of symbols]

1 control unit 2 the power supply unit 3 zero-cross detecting unit 4 the control circuit unit 10 ₁ to 10 ₃ luminaire _{11a 1 ..., 11b 1 ...,} 11c 1 ... light source Qa~Qc switching element

Claims (26)

[Claims] 1. A light source comprising: a plurality of light sources; lighting means for lighting these light sources; and control means for controlling the lighting means to change the light amount of each light source, wherein the control means includes at least one of the plurality of light sources. The light source controls the lighting means so that the light amount changes in accordance with a light amount change pattern that is monotonously and periodically changed between two light amounts of an upper limit and a lower limit of the light amount, and at least one other light source is sequentially turned on at predetermined time intervals. A lighting device, wherein a lighting unit is controlled such that a light amount changes according to a light amount change pattern with a delay. 2. A method according to claim 1, wherein a plurality of light sources are provided in each of the plurality of lighting devices, and the control unit determines that all of the light sources included in at least one of the plurality of lighting devices have a light amount according to a light amount change pattern. And controlling the lighting means so that all the light sources included in at least one other lighting fixture sequentially change the light amount according to the light amount change pattern at predetermined time intervals. The lighting device according to claim 1, wherein: 3. A plurality of lighting devices each including one or more light sources, wherein the control means controls the lighting means so that at least one of the plurality of light sources changes its light amount according to a light amount change pattern. And a lighting device for controlling the lighting means so that at least one other light source sequentially changes the light amount in accordance with the light amount change pattern at predetermined time intervals. 4. A fade-in time required at the time of a fade-in operation to raise the light amount of the light source from the lower limit to the upper limit and a fade-out time required at the time of a fade-out operation to lower the light amount of the light source from the upper limit to the lower limit. The lighting device according to claim 1, wherein the control means controls the lighting means so that the in and the at least one other light source intersect with each other. 5. The lighting device according to claim 1, wherein the control means controls the lighting means so that all the light sources are continuously lit at a constant light quantity for a predetermined time at the upper and lower limits of the light quantity. 6. A setting means for setting an arbitrary combination of the number of light sources to be continuously lit at the upper limit of the light amount and the number of light sources to be continuously lit at the lower limit of light amount at the same time. The lighting device according to the above. 7. The lighting device according to claim 1, wherein the control unit controls the lighting unit so that each light source is continuously lit at a constant light amount for at least one of an upper limit and a lower limit of the light amount for a predetermined time. apparatus. 8. The control means is determined based on at least one of a fade-in time required at the time of fade-in to increase the light amount of the light source from the lower limit to the upper limit or a fade-out time required at the time of fade-out to lower the light amount of the light source from the upper limit to the lower limit. The lighting device according to claim 1, wherein the lighting unit is controlled so that the light amount changes according to a light amount change pattern having a certain cycle. 9. A fade-in time required at the time of a fade-in to increase the light amount of the light source from the lower limit to the upper limit or a delay time determined based on a fade-out time required at the time of a fade-out to decrease the light amount of the light source from the upper limit to the lower limit. The lighting device according to claim 1, wherein the lighting unit is controlled so that the light amount of each light source changes in accordance with the light amount change pattern by sequentially delaying the light amounts. 10. The control device according to claim 1, wherein the rate of change at the time of fade-in for increasing the light amount of the light source from the lower limit to the upper limit and at the time of fade-out for decreasing the light amount of the light source from the upper limit to the lower limit is defined as 100% of the rated light amount of the light source. 30% per second
The lighting device according to claim 1, wherein the lighting means is controlled so as to be not less than 150%. 11. The control means according to claim 1, wherein the range of change at the time of fade-in to increase the light amount of the light source from the lower limit to the upper limit and the amount of change at the time of fade-out to decrease the light amount of the light source from the upper limit to the lower limit are set when the upper limit of the light amount of the light source is 100%. The lighting device according to claim 1, wherein the lighting means is controlled so as to be at least 30% or more. 12. The control means according to claim 1, wherein a fade-in time required for a fade-in operation for increasing the light amount of the light source from the lower limit to the upper limit and a fade-out time required for a fade-out operation for decreasing the light amount of the light source from the upper limit to the lower limit are 1.5 seconds or less. The lighting device according to claim 1, wherein the lighting means is controlled as described above. 13. The control means according to claim 1, wherein a fade-in time required at the time of a fade-in operation to raise the light amount of the light source from the lower limit to the upper limit and a fade-out time required at the time of a fade-out operation to lower the light amount of the light source from the upper limit to the lower limit are substantially the same for all the light sources. The lighting device according to claim 1, wherein the lighting unit is controlled so as to be as follows. 14. The lighting device according to claim 1, wherein the control means controls the lighting means so that the upper and lower limits of the light amounts of all the light sources are substantially the same. 15. A control unit comprising: a plurality of light sources having different fade-in times required for a fade-in operation for increasing the light amount of the light source from the lower limit to the upper limit and a fade-out time required for the fade-out operation for decreasing the light amount of the light source from the upper limit to the lower limit. The lighting device according to claim 1, wherein the lighting unit is controlled so as to include at least one combination. 16. The lighting device according to claim 1, wherein the control means controls the lighting means so that at least one set includes a combination of a plurality of light sources having at least one of an upper limit and a lower limit different from each other. . 17. A control unit comprising: a fade-in time required for a fade-in operation for increasing the light amount of the light source from a lower limit to an upper limit and a fade-out time required for a fade-out operation for decreasing the light amount of the light source from the upper limit to the lower limit; The lighting device according to claim 2, wherein the lighting unit is controlled so as to be as follows. 18. The lighting device according to claim 2, wherein the control means controls the lighting means so that the cycle of the light amount change pattern is substantially the same for all the lighting fixtures. 19. The lighting device according to claim 1, wherein the control means controls the lighting means so as to continuously light at least one of the plurality of light sources at a constant light amount. 20. The lighting device according to claim 2, further comprising: a plurality of lighting devices including at least a light source and lighting means; and a controller unit including control means and separated from the lighting devices. . 21. The control means controls the lighting means such that when the lighting state of the light source is set or changed, the illuminance of the irradiated surface before and after the setting or change becomes substantially constant. The lighting device according to claim 1. 22. The control means, wherein when the lighting state of the light source is set or changed, the control means controls the lighting means so that the illuminance on the irradiated surface before and after the setting or change is different. The lighting device according to claim 1. 23. The lighting device according to claim 1, wherein the control means controls the lighting means by taking an arbitrary predetermined time for the setting or change when the lighting state of the light source is set or changed. . 24. The lighting device according to claim 1, further comprising a light source having red, green, and blue light colors. 25. The control means, as a set of a plurality of light sources having red, green, and blue light colors, increases the light amount of the light source from the lower limit to the upper limit and decreases the light amount of the light source from the upper limit to the lower limit. The lighting device according to claim 24, wherein the lighting device is controlled. 26. The control means turns on one or more sets of a plurality of light sources having red, green, and blue light colors at an upper limit or a lower limit of the light amount, and controls only a combination of monochromatic light sources from the upper limit to the lower limit or the lower limit. The lighting device according to claim 24, wherein the lower limit is changed to the upper limit.