JP2013069631A - Luminaire, lighting fixture, and lighting control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire, a lighting fixture, and a lighting control system capable of creating a wide variety of lighting environment.SOLUTION: A luminaire 10 includes first to fourth light sources 11-14, a control section 30, and an operation section 35. The first light source has a relatively high correlation color temperature, and a relatively high general color rendering index. The second light source has a relatively high correlation color temperature, and a relatively low general color rendering index. The third light source has a relatively low correlation color temperature, and a relatively high general color rendering index. The fourth light source has a relatively low correlation color temperature, and a relatively low general color rendering index. The control section 30 controls at least two of the flux, correlation color temperature, and general color rendering index of each light source. The operation section 35 specifies at least one of the correlation color temperature, and general color rendering index of each light source, and achieves spectral distribution having the correlation color temperature, and general color rendering index thus specified.

Description

  Embodiments described herein relate generally to a lighting device, a lighting fixture, and a lighting control system capable of creating various lighting environments.

  To create various lighting environments, generally adjust the light color and brightness by providing multiple light sources with different light colors, such as white light from fluorescent lights and warm light from light bulbs. Has been done.

JP 2001-184910 A JP 2008-300117 A

  However, in order to produce various lighting environments, for example, when you walk outside with the clothes of the color selected in the store, the color appearance does not appear different from the color you expected. It is necessary to improve the color direction (color rendering). For this reason, it is an important issue to be able to control the light color and brightness and how to control the appearance of the color to create various lighting environments.

  In stores and the like, as described above, the correlated color temperature and the average color rendering index Ra of the lighting fixture are important factors in considering the atmosphere of the space and the appearance of the product. In particular, the higher the average color rendering index Ra is, the more faithful the appearance of the color is, but there is a trade-off relationship with the efficiency of the apparatus. Therefore, what kind of average color rendering index Ra should be selected at the time of purchase. There are difficult issues for users to judge.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lighting device, a lighting fixture, and a lighting control system capable of creating various various lighting environments.

  The illuminating device in embodiment of this invention comprises a 1st-4th light source, a control part, and an operation part. The first light source has a relatively high correlated color temperature and a relatively high average color rendering index. The second light source has a relatively high correlated color temperature and a relatively low average color rendering index. The third light source has a relatively low correlated color temperature and a relatively high average color rendering index. The fourth light source has a relatively low correlated color temperature and a relatively low average color rendering index. The control unit controls at least two of the light flux of each light source, the correlated color temperature, and the average color rendering index. The operation unit designates at least one of the correlated color temperature and the average color rendering index of each light source, and realizes a spectral distribution having the designated correlated color temperature and average color rendering index.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device, lighting fixture, and lighting control system which can create various various lighting environments can be provided.

The light emitting module of the illuminating device which is embodiment of this invention is shown, (a) is a front view, (b) is a back view. Sectional drawing which similarly expands and shows the light source of an illuminating device. The spectral distribution figure of each light source in an illuminating device. The front view which similarly shows the light emitting module of an illuminating device partially expanded. Similarly, an electrical circuit diagram of the lighting device. The graph which similarly shows the light control rate of each light source in the relative color temperature of 3500K and average color rendering index Ra70-95 with the fixture light beam in an illuminating device constant. The graph which similarly shows the light control rate of each light source in correlation color temperature 2850K-5000K by making the fixture light beam in an illuminating device constant, and average color-rendering evaluation number Ra80. The front view which similarly shows the operation part of an illuminating device. The lighting fixture is similarly shown, (a) is a perspective view showing a part cut away, (b) is a front view of the base body. The figure which similarly shows a lighting control system and shows the ceiling in which the lighting fixture was installed. Similarly, the front view which expands and shows a part of the light emitting module in the modification of an illuminating device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment is a lighting control system installed in a lighting showroom that can create various lighting environments and can experience various lighting environments. The lighting device and the lighting fixture used in this lighting control system will be described. First, the configuration of the lighting device will be described.

  The lighting device 10 of the present embodiment is a lighting device using a light emitting diode (hereinafter referred to as “LED”) as a light source, and has a relatively high correlated color temperature as shown in FIGS. A first light source 11 having a relatively high average color rendering index Ra; a second light source 12 having a relatively high correlated color temperature and a relatively low average color rendering index Ra; A third light source 13 having a relatively high average color rendering index Ra; a fourth light source 14 having a relatively low correlated color temperature and a relatively low average color rendering index Ra; a luminous flux of each of the light sources, a correlated color temperature, A control unit 30 for controlling the average color rendering index Ra; at least one of the correlated color temperature and the average color rendering index of each light source is specified, and a spectral distribution having the specified correlated color temperature and average color rendering index is realized. The operation unit 35 is configured.

  Said 1st-4th light sources 11-14 were comprised as follows in this embodiment.

  The first light source 11 includes a blue light-emitting diode and a phosphor excited by the blue light-emitting diode. The correlated color temperature is 5000 K or higher, in this embodiment, about 5000 K, and the average color rendering index Ra is 90 or higher. Then, it comprised with about 92 1st LED.

  The second light source 12 includes a blue light emitting diode and a phosphor excited by the blue light emitting diode. The correlated color temperature is 5000 K or more, in this embodiment, about 5000 K, and the average color rendering index Ra is 70 or less. Then, it comprised with about 70 2nd LED.

  The third light source 13 includes a blue light-emitting diode and a phosphor excited by the blue light-emitting diode. The correlated color temperature is 3000 K or less, in this embodiment, about 2700 K, and the average color rendering index Ra is 90 or more. Then, it comprised with about 92 3rd LED.

  The fourth light source 14 includes a blue light emitting diode and a phosphor excited by the blue light emitting diode. The correlated color temperature is 3000 K or less, in this embodiment, about 2700 K, and the average color rendering index Ra is 70 or less. Then, it consisted of about 67 4th LED.

  The first to fourth light sources 11 to 14 are composed of SMD (Surface Mount Device) type LEDs, and as shown in FIG. 2, a blue LED chip 15 is mounted on a substrate 16 having a circuit pattern. ing. The LED is a COB (Chip on Board) type configured by sealing with a resin including a plurality of LED chips directly mounted on a substrate and a phosphor excited by light emitted from the LED chips. There may be.

  The substrate 16 is a rectangular flat plate made of aluminum or the like having heat dissipation and rigidity, and circuit patterns 18 on the cathode side and the anode side are formed on the substrate 16 with an electrical insulating layer 17 interposed therebetween. The circuit pattern 18 is made of copper (Cu) or the like.

  Then, the bottom electrode of the blue LED chip 15 is electrically connected to the circuit pattern 18 on one electrode side, and the bonding electrode 19 is formed of a gold wire or the like on the upper electrode on the circuit pattern 18 on the other electrode side. It is electrically connected via. Further, a resin frame 20 is provided on the substrate 16, and a recess 20a is formed in the frame. The frame 20 is made of, for example, a synthetic resin such as white PBT (polybutylene terephthalate), and the blue LED chip 15 is disposed and accommodated in the central portion of the recess 20a.

  The phosphor-containing resin layer 21 is formed by applying or filling a phosphor-containing resin in which a phosphor is mixed and dispersed in a transparent resin such as a silicone resin or an epoxy resin in the recess 20a in which the blue LED chip 15 is accommodated. The blue LED chip 15 is formed and covered with the phosphor-containing resin layer 21. And the blue light radiated | emitted from the blue LED chip | tip 15 and the light which a fluorescent substance is excited by the blue LED chip | tip 15 radiate | mixes, and radiates | emits white light.

  The first to fourth light sources 11 to 14 described above have the same configuration as that of FIG. 2 described above, but the phosphors contained in the phosphor-containing resin layer 21 are different from each other. That is, it is configured to obtain light having a necessary correlated color temperature and an average color rendering index Ra by selecting a phosphor having a target performance.

  That is, the first light source 11 is a blue system having a peak wavelength in the vicinity of about 440 nm as shown by a curve 11 (thin dotted line) in the graph of FIG. 5000 K, average color rendering index Ra is 90 or more, and in this embodiment, about 92 Ra is emitted.

  The second light source 12 is a blue system having a peak wavelength in the range of about 440 nm as shown by a curve 12 (thick solid line) in the graph of FIG. 3, and the correlated color temperature is 5000 K or more, and in this embodiment, about 5000 K. The average color rendering index Ra is 70 or less, and in this embodiment, about 70 Ra is emitted.

  The third light source 13 is a red system having a peak wavelength in the range of about 640 nm as shown by a curve 13 (thick dotted line) in the graph of FIG. 3, and the correlated color temperature is 3000 K or less, and in this embodiment, about 2700 K. The average color rendering index Ra is 90 or more, and in this embodiment, about 92 Ra is emitted.

  As shown by the curve 14 (thin solid line) in the graph of FIG. 3, the fourth light source 14 is a yellow system having a peak wavelength in the range of about 580 nm and a correlated color temperature of 3000 K or less, and in this embodiment, about 2700 K. The average color rendering index Ra is 70 or less, and in this embodiment, about 67 Ra is emitted.

  Each of the first to fourth light sources 11 to 14 configured as described above includes a substrate 16 in which the first to fourth LEDs constituting each of them form a rectangular shape as shown in FIGS. On the other hand, the first to fourth LEDs are arranged. Each light source (one each of the first to fourth LEDs, that is, one set of four) is used with 12 sets connected in series. The first to fourth LEDs have predetermined substantially equal intervals and are arranged so as to be arranged in parallel in the longitudinal direction of the substrate 16, thereby forming a light emitting module 22 having a rectangular shape. Is done. The length dimension L1 of the light emitting module 22 of the present embodiment configured as described above is about 256 mm, and the width dimension W1 is about 84 mm.

  Moreover, in this embodiment, each light source 11-14 is arrange | positioned as follows. That is, as shown in a partially enlarged view in FIG. 4, when the light emitting module 22 having a rectangular shape is viewed in units of eight in the vertical direction of the figure, as shown by a group of dotted frame in the figure, “low Ra "and" High Ra "LED chips were alternately arranged. In other words, a group of LED chips of “low Ra” and “high Ra” are arranged so as to intersect and intersect diagonally as indicated by arrows in the figure. By this arrangement, a group of “low Ra” and “high Ra” LED chips, that is, a group having a substantially similar average color rendering index Ra does not shift to one side, and the average of the target created by each light source It becomes possible to perform substantially uniform illumination with the color rendering index Ra. In FIG. 4, “low Ra” indicates an LED chip having a low average color rendering index Ra, and “high Ra” indicates an LED chip having a high average color rendering index Ra. “L” indicates an LED chip having a low correlated color temperature, and “W” indicates an LED chip having a high correlated color temperature.

  Next, the control unit 30 controls the luminous flux, the correlated color temperature, and the average color rendering index Ra of each of the light sources 11 to 14 configured as described above. As shown in the electric circuit diagram of FIG. A lighting circuit 31 is provided for each of the first to fourth light sources 11 to 14 in which LEDs are connected in series, and a controller 30 is provided between each of the lighting circuits 31 and the power source E. The control unit 30 is configured by a microcomputer or the like, and controls each element of the correlated color temperature and the average color rendering index Ra by controlling the light flux, and further controls the light output to create various lighting environments. .

  For example, in order to obtain a Ra95 illumination environment having a high average color rendering index in order to improve the appearance of color at a correlated color temperature of 3500 K (near the light bulb color), the following control is performed.

The graph shown in FIG. 6 is a graph showing the dimming rate, that is, the luminous flux ratio (%) of each of the light sources 11 to 14 at an average color rendering index Ra70 to 95 at a correlated color temperature of 3500 K when the instrument luminous flux is constant at 4000 lm. And shows the relationship with the luminous flux ratio (%) of each of the light sources 11 to 14 in the mean color rendering index Ra5 increments. As is apparent from this graph,
The luminous flux ratio of the first light source 11 (curve 11) composed of the first LED having a correlated color temperature of 5000K and an average color rendering index Ra of 92 is about 43%,
The luminous flux ratio of the second light source 12 (curve 12) composed of the second LED having a correlated color temperature of 5000K and an average color rendering index Ra of 70 is about 0%,
The luminous flux ratio of the third light source 13 (curve 13) composed of the third LED having a correlated color temperature of 2700K and an average color rendering index Ra of 92 is about 52%.
The luminous flux ratio of the fourth light source 14 (curve 14) comprising the fourth LED having a correlated color temperature of 2700K and an average color rendering index Ra of 67 is set to about 5%.
By performing dimming control of each, it is possible to create an illumination environment having an average color rendering index Ra95 at a correlated color temperature of 3500K.

  Similarly, in the illumination environment having the average color rendering index Ra85, the luminous flux ratio of the first light source 11 is approximately 36%, the luminous flux ratio of the second light source 12 is approximately 5%, the luminous flux ratio of the third light source 13 is approximately 22%, The fourth light source 14 can be made to have a luminous flux ratio of about 36% by performing dimming control. Similarly, the light flux ratio of each of the light sources 11 to 14 is dimmed and controlled so that the fixture luminous flux is constant and the average color rendering index Ra at a correlated color temperature of 3500 K (near the light bulb color) is in the range of about 70 to about 95. A lighting environment can be created.

  Further, in the same manner as described above, as shown in the graph of FIG. 6, the luminous flux of the instrument is constant, the luminous flux ratio (%) of each of the light sources 11 to 14 at the correlated color temperature, for example, 2850 K to 5000 K, that is, the dimming rate and the average By extracting the relationship between the color rendering index Ra, it is possible to create various lighting environments having various average color rendering indices Ra at various correlated color temperatures. Moreover, these lighting environments can be created continuously and arbitrarily along the curve of each graph.

  For example, in order to obtain an illumination environment having an average color rendering index Ra of 80 and a correlated color temperature of 5000 K (near white), the following control is performed.

The graph shown in FIG. 7 is a graph showing the dimming rate of each of the light sources 11 to 14 at the correlated color temperature of 2850 K to 5000 K, that is, the luminous flux ratio (%) when the instrument luminous flux is constant 4000 lm. This shows the relationship with the luminous flux ratio (%) of each of the light sources 11 to 14 at the correlated color temperature in increments of 50K. As is apparent from this graph,
The luminous flux ratio of the first light source 11 (curve 11) comprising the first LED having a correlated color temperature of 5000K and an average color rendering index Ra of 92 is about 40%,
The luminous flux ratio of the second light source 12 (curve 12) composed of the second LED having a correlated color temperature of 5000 K and an average color rendering index Ra of 70 is about 55%;
The luminous flux ratio of the third light source 13 (curve 13) comprising the third LED having a correlated color temperature of 2700K and an average color rendering index Ra of 92 is about 0%.
Correlation at the average color rendering index Ra80 by controlling the light intensity of the fourth light source 14 (curve 14) comprising the fourth LED having a correlated color temperature of 2700K and an average color rendering index Ra of 67 to about 0%. An illumination environment with a color temperature of 5000K can be created.

  Similarly, in an illumination environment having a correlated color temperature of 4000K, the luminous flux ratio of the first light source 11 is approximately 38%, the luminous flux ratio of the second light source 12 is approximately 25%, the luminous flux ratio of the third light source 13 is approximately 0%, The light source ratio of the four light sources 14 can be set to about 38% by controlling the light control respectively. Similarly, by controlling the luminous flux ratio of each light source, it is possible to create various lighting environments having a correlated color temperature of 2850K to 5000K at an average color rendering index Ra80 with a constant instrument luminous flux.

  Further, in the same manner as described above, as shown in the graph of FIG. 7, the luminous flux of the instrument is constant, and the luminous intensity ratio Ra is, for example, the luminous flux ratio (%) of each of the light sources 11 to 14 at 70 to 95, that is, the dimming rate. And the correlated color temperature (K) can be extracted to create various lighting environments having various correlated color temperatures at various average color rendering index Ra. Moreover, these lighting environments can be created continuously and arbitrarily along the curve of each graph.

  Further, as described above, the control unit 30 controls each element of the correlated color temperature (K) and the average color rendering index Ra by controlling the luminous flux of each of the light sources 11 to 14, and further controls the light output. Various lighting environments can be created arbitrarily. Furthermore, without controlling all these elements, at least two of these elements such as the luminous flux and the correlated color temperature, the luminous flux and the average color rendering index Ra, or the correlated color temperature and the average color rendering index Ra are controlled. As a result, various lighting environments can be created.

  Further, the control unit 30 may perform calculation by the calculation unit each time and control to create various illumination environments arbitrarily or continuously, but various predetermined illumination patterns, that is, realizable light fluxes, In the range of the average color rendering index Ra and the correlated color temperature, a table in which the dimming rate of each of the light sources 11 to 14 is calculated in advance is stored in the storage unit, and various illuminations can be obtained by appropriately calling the stored illumination patterns. You may make it produce an environment and a scene. The lighting patterns to be memorized include, for example, time elements such as morning, noon, and evening time zones and seasons, natural elements such as weather and temperature, room usage conditions, houses, offices, workplaces, factories, etc. Various lighting patterns may be created in consideration of each element such as the usage environment.

  Next, the operation unit 35 designates an arbitrary average color rendering index Ra within a predetermined range and a correlated color temperature within a predetermined range on the interface of the lighting device 10, thereby specifying the specified average color rendering index Ra and the correlated color. A light having a spectral distribution having a temperature can be realized.

 And as shown in FIG. 8, the operation part of this embodiment is comprised by the operation panel P installed in the wall surface etc. of a room. The operation panel P includes a control unit 30 composed of the above-described microcomputer or the like in a panel case. If the front panel is a color liquid crystal panel, the first display unit P1 and the second display unit P2, and the touch-type first operation. The button P11, the second operation button P12, the memory button P3, and the reset button P4 are included. The operation unit 35 may be configured with a remote controller R. Further, the control unit 30 may be installed in a lighting fixture or the like described later without being incorporated in the operation panel P or the remote control R.

 The first display unit P1 displays the correlated color temperature, and the second display unit P2 displays the average color rendering index Ra. The first display unit P1 is provided at the top and the second display unit P2 is provided at the bottom. Yes.

 The first operation button P11 is provided below the first display portion P1 for displaying the correlated color temperature, and a numerical value button P11-1 for specifying the correlated color temperature and a numerical adjustment for further specifying the specified correlated color temperature. Button P11-2 is provided.

 In the present embodiment, the numerical button P11-1 displays numerical values of 2800K, 3000K, 4000K, and 5000K, and a desired correlated color temperature can be designated by pressing the displayed correlated color temperature button.

 In the present embodiment, the numerical value adjustment button P11-2 is a numerical value of the designated numerical value button P11-1, for example, a numerical value of “−500K” or “−50K” that is adjusted by subtracting 500K or 50K from 3000K. Similarly, for example, it is configured by numerical adjustment buttons of “+ 50K” and “+ 500K” that are adjusted by adding, for example, 3000K to 500K or 50K.

 The second operation button P12 is provided at a lower portion of the second display portion P2 that displays the average color rendering evaluation number Ra, and the numerical button P12-1 that specifies the average color rendering evaluation number Ra and the specified average color rendering evaluation number Ra are further detailed. A numerical adjustment button P12-2 for designating is provided.

 In the present embodiment, the numerical value button P12-1 displays the numerical values Ra70 and Ra80, and the desired average color rendering index Ra can be designated by pressing the button of the displayed average color rendering index Ra.

 In the present embodiment, the numerical value adjustment button P12-2 is the same as the numerical value adjustment button of the designated numerical value button P12-1, for example, the numerical value adjustment button “Ra-5” for adjusting Ra80 to Ra5 minus. For example, a numerical value adjustment button of “Ra + 5” for adjusting Ra80 to Ra5 plus is used.

 Note that the operation unit 35 shown in FIG. 8 shows a state in which the correlated color temperature is specified as 2800K and the average color rendering index is specified as Ra85, which is displayed on the display units P1 and P2, respectively.

 Then, for example, in order to obtain a lighting environment of Ra95 having a high average color rendering index in order to improve the color appearance at a correlated color temperature of 3500 K (near the light bulb color), the following operation is performed.

 First, the correlated color temperature of 3500K is designated by pressing the first operation button P11. Next, the average color rendering index of Ra 95 is designated by pressing the second operation button 12. Thus, the designated signal is transmitted to the control unit 30, the dimming rate (light flux ratio%) of each light source 11 to 14 is calculated by the calculation unit of the control unit 30, and each light source 11 to 11 is calculated based on the calculated dimming rate. 14 is turned on. As a result, it is possible to create an illumination environment of Ra95 having a high average color rendering index, that is, an illumination environment with a good color appearance at a correlated color temperature of 3500 K (near the light bulb color).

 Similarly, by selecting and specifying the first operation button 11 and the second operation button 12, it is possible to create various lighting environments in which the average color rendering index at the correlated color temperature of 2300K to 5500K is in the range of Ra65 to 85. .

 Further, for example, in order to obtain an illumination environment having an average color rendering index Ra of 80 and a correlated color temperature of 5000K (near white), the setting of the illumination environment previously specified is reset by the reset button P4. First, the average color rendering index of Ra 80 is designated by pressing the second operation button 12. Next, the correlated color temperature of 5000K is designated by pressing the first operation button P11. Thus, the designated signal is transmitted to the control unit 30, the dimming rate (light flux ratio%) of each light source 11 to 14 is calculated by the calculation unit of the control unit 30, and each light source 11 to 11 is calculated based on the calculated dimming rate. 14 is turned on. As a result, an illumination environment having an average color rendering index Ra of 80 and a correlated color temperature of 5000 K (near white) can be created.

 Similarly, by selecting and specifying the second operation button 12 and the first operation button 11, it is possible to create various lighting environments in which the correlated color temperature at the average color rendering index Ra80 is 2300K to 5500K.

 Similarly, by selecting and specifying the second operation button 12 and the first operation button 11, various lighting environments having correlated color temperatures of 2300K to 5500K in the average color rendering index Ra65 to 85 can be created.

 In addition, the memory button P3 is a button for calling an illumination pattern stored in the control unit 30, and has four memory buttons (M1, M2, M3, M4) in this embodiment. Then, by selecting and pressing each of the four memory buttons P3, each light source is preliminarily set in various illumination patterns determined in advance, that is, in the range of light flux that can be realized, average color rendering index Ra, and correlated color temperature. The dimming rate of 11 to 14 is calculated and a table held in the storage unit is called up, and various lighting environments and scenes can be produced.

 In this embodiment, the memory button (M1) has a high average color rendering index Ra and a lighting environment close to sunlight, and the memory button (M2) has a warm color in the winter living room at a correlated color temperature of about 3000K. The memory environment (M3) has a lighting environment mainly composed of a light bulb color, and the memory button (M4) has a memory environment (M4) that has a daylight white environment mainly composed of soft white in the living room in spring or autumn at a correlated color temperature of 5000K. ) Set the lighting environment mainly in bluish cool daylight color in the summer living room near the correlated color temperature of 6500K, and specified each lighting environment simply and reliably by simply pressing the memory button P3 It was configured to create a lighting environment.

 In the present embodiment, the correlated color temperature and the average color rendering index Ra of each of the light sources 11 to 14 are specified, but either one of the correlated color temperature or the average color rendering index Ra is specified. Thus, various lighting environments may be created. In short, it is only necessary to configure to specify at least one of the correlated color temperature and the average color rendering index Ra. Moreover, you may comprise so that the energy-saving mode which reduced the optical output may be created.

 Furthermore, it may be configured to be able to specify an arbitrary numerical value with the numeric keypad within the range of the luminous flux that can be realized, the average color rendering index Ra, and the correlated color temperature, or from the specified lighting environment to another specified lighting environment. However, the light flux, the average color rendering index Ra, and the correlated color temperature may be continuously changed.

  As described above, the illuminating device 10 having the light sources 11 to 14 including the first to fourth LEDs mounted on the substrate 16 and including the control unit 30 and the operation unit 35 for controlling the respective light sources is configured. The illuminating device 10 configured as described above may be configured by one illuminating device, but a luminaire is configured by using a plurality of illuminating devices. As shown in FIG. 9, the lighting fixture of the present embodiment is a ceiling-embedded lighting fixture using eight lighting devices 10.

  Next, the configuration of the lighting fixture will be described. As illustrated in FIGS. 9A and 9B, the lighting fixture 40 includes a fixture main body 41 and the lighting device 10 having the above-described configuration disposed in the fixture main body 41.

  The instrument body 41 includes a base body 41a made of a substantially square steel plate and the like, and a shade 41b made of milky white synthetic resin that covers the base body 41a. The vertical and horizontal dimensions of the instrument body 41 in the present embodiment are configured to be about 600 mm.

  Eight lighting devices 10 configured as described above are installed on the base body 41a. The eight illuminating devices are divided into four pieces, substantially parallel to one side of the square base body 41a, and the illuminating devices 10 are arranged with substantially equal intervals. Each lighting device 10 is electrically connected so as to be in parallel, and each lighting circuit 31 of each of the light sources 11 to 14 in the eight lighting devices 10 is collected and housed in a lighting case 31a together with a control unit. It is installed on the back side of 41a. Each lighting device 10 is connected to the power source E via each lighting circuit 31 and the control unit 30.

  In the present embodiment, the lighting fixture 40 has an average color rendering index Ra of 60 and 90 for a light bulb color having a correlated color temperature of about 3000K and a daylight color having a correlated color temperature of about 6500K, and an average color rendering index Ra of about 6500K. The eight lighting devices 10 equipped with four types of LEDs 60 and 90 were used as variable color / variable color rendering instruments.

  In the present embodiment, the control unit 30 is configured to create various lighting environments by commonly controlling the dimming rate data of the eight lighting devices 10 as the same, but the eight lighting devices are configured. The 10 dimming rate data may be controlled separately. For example, a light bulb color, day white, daylight color, or the like may be combined, or an energy saving mode may be created in which four light outputs are turned off and the lamp is not lit. In the figure, P is an operation panel installed on the wall surface of the room, R is a remote controller, and transmits a radio signal for creating a target lighting environment to the control unit 30. Either the remote controller R or either one may be installed. The control unit 30 may be provided in the operation panel P or the remote controller R.

  Next, the structure of the illumination control system installed in the illumination showroom using the illumination apparatus configured as described above will be described. As shown in FIG. 10, the lighting control system 50 of the present embodiment is configured by using nine lighting fixtures 40 having the above-described configuration.

  Each of the lighting fixtures 40 is installed on a ceiling X that forms a substantially square shape of a room installed in the showroom so that three units are positioned in three rows at approximately equal intervals. And each lighting fixture 40 is electrically connected so that it may become parallel, and the control part 30 which controls nine lighting fixtures 40 in common is provided in a ceiling etc., and is comprised. In addition, the operation panel P is installed on the wall surface, and the remote control R is installed to configure the illumination control system 50.

  In the lighting control system 50 configured as described above, the guide can operate the remote controller R or the operation panel P to allow the showroom visitors to experience continuous changes in color temperature and color rendering. In particular, according to the present embodiment, the average color rendering index Ra, that is, the color rendering property can be changed, and the occupant's facial color is significantly improved or deteriorated, and the average color rendering index Ra is changed. You can actually experience. In addition, the correlated color temperature can be changed at the same time, and a change in the correlated color temperature, for example, an atmosphere in a space from a light bulb color to a daylight white color or a daylight color can be experienced. In addition, each illumination environment stored in advance can be easily and reliably created by simply pressing a button on the remote controller R. Furthermore, it is possible to reproduce various lighting design specifications, which can be used as a place for specification determination, and it is possible to provide a lighting control system particularly suitable for a lighting showroom.

  In the lighting control system of the present embodiment, the control unit 30 is configured to create various lighting environments by controlling the dimming rate data of the nine lighting fixtures 40 to be the same. The dimming rate data of the nine lighting fixtures 40 may be controlled separately. For example, an energy saving mode may be created in which light bulb color, day white, daylight color, or the like is combined, or a light output of a part of the device is turned off and the light is turned off. In the present embodiment, the light control system 50 is configured to illuminate only by the lighting fixture 40, but may be configured by combining the lighting fixture 40 and the lighting device 10. Furthermore, you may comprise only with the illuminating device 10. FIG.

  As mentioned above, in this embodiment, although each light source was comprised with LED, even if it replaces with LED and it comprises and combines with an incandescent lamp, a fluorescent lamp, etc., it may comprise by combining these incandescent lamp, a fluorescent lamp, etc. with LED. Good. Further, although the correlated color temperature is composed of a light source having a correlated color temperature of 5000K or more and a light source having a correlated color of 3000K or less, the correlated color temperature may be composed of a light source having a correlated color temperature within 5000K to 3000K. Moreover, although the average color rendering index Ra is configured with 90 or more light sources and 70 or less light sources, the average color rendering index Ra may be configured with a light source having an average color rendering index Ra within 90 to 70 depending on the application.

  Further, the arrangement of each light source on the substrate is as shown in a partly enlarged view in FIG. 11 when the light emitting module 22 having a rectangular shape is viewed in units of eight in the vertical direction of the figure. As shown in the group, the LED chip “L” having a low correlated color temperature and the LED chip “W” having a high correlated color temperature are alternately arranged. In other words, the groups of “L” and “W” LED chips are arranged so as to intersect and intersect diagonally as indicated by arrows in the figure. With this arrangement, groups of “L” and “W” LED chips, that is, groups having substantially the same correlated color temperature do not shift to one side, and the approximates of the target correlated color temperatures created by the respective light sources. It becomes possible to perform uniform illumination. In FIG. 10, “low Ra” indicates an LED chip having a low average color rendering index Ra, and “high Ra” indicates an LED chip having a high average color rendering index Ra. “L” indicates an LED chip having a low correlated color temperature, and “W” indicates an LED chip having a high correlated color temperature.

  Further, in the present embodiment, the lighting fixture is not limited to the above-illustrated lighting showroom, but also various lighting fixtures for facilities such as stores and offices, for business use, and for residential use, and crime prevention lights, street lights, and road lights. Various kinds of outdoor lighting fixtures may be configured. The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 1st light source 12 2nd light source 13 3rd light source 14 4th light source 30 Control part 35 Operation part 40 Lighting fixture 41 Appliance main body 50 Lighting control system

Claims (4)

A first light source having a relatively high correlated color temperature and a relatively high average color rendering index;
A second light source having a relatively high correlated color temperature and a relatively low average color rendering index;
A third light source having a relatively low correlated color temperature and a relatively high average color rendering index;
A fourth light source having a relatively low correlated color temperature and a relatively low average color rendering index;
A control unit that controls at least two of the luminous flux, correlated color temperature, and average color rendering index of each light source;
An operation unit that designates at least one of the correlated color temperature and the average color rendering index of each light source and realizes a spectral distribution having the specified correlated color temperature and average color rendering index;
An illumination device comprising: A blue light emitting diode and a first light emitting diode having a phosphor excited by the blue light emitting diode, having a correlated color temperature of 5000 K or higher and an average color rendering index of 90 or higher;
A blue light emitting diode and a second light emitting diode having a phosphor excited by the blue light emitting diode and having a correlated color temperature of 5000 K or more and an average color rendering index of 70 or less;
A blue light emitting diode and a third light emitting diode having a phosphor excited by the blue light emitting diode and having a correlated color temperature of 3000 K or less and an average color rendering index of 90 or more;
A blue light emitting diode and a fourth light emitting diode having a phosphor excited by the blue light emitting diode and having a correlated color temperature of 3000 K or less and an average color rendering index of 70 or less;
A control unit that controls at least two of the luminous flux, correlated color temperature, and average color rendering index of each light emitting diode;
An operation unit that designates at least one of the correlated color temperature and the average color rendering index of each of the light emitting diodes, and realizes a spectral distribution having the specified correlated color temperature and the average color rendering index;
An illumination device comprising: An instrument body;
The lighting device according to claim 1 or 2, which is disposed on the instrument body;
The lighting fixture characterized by comprising. An illumination control system comprising the illumination device according to claim 1 and / or the illumination fixture according to claim 3.

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