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WO2019212025A1 - Dispositif d'éclairage et procédé de commande de dispositif d'éclairage - Google Patents

Dispositif d'éclairage et procédé de commande de dispositif d'éclairage Download PDF

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Publication number
WO2019212025A1
WO2019212025A1 PCT/JP2019/017558 JP2019017558W WO2019212025A1 WO 2019212025 A1 WO2019212025 A1 WO 2019212025A1 JP 2019017558 W JP2019017558 W JP 2019017558W WO 2019212025 A1 WO2019212025 A1 WO 2019212025A1
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WIPO (PCT)
Prior art keywords
light
emitting diode
guide plate
light emitting
main surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2019/017558
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English (en)
Japanese (ja)
Inventor
崎山　秀知
孝夫 牛山
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Kowa Co Ltd
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Kowa Co Ltd
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Filing date
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Application filed by Kowa Co Ltd filed Critical Kowa Co Ltd
Priority to JP2020517058A priority Critical patent/JP7277446B2/ja
Publication of WO2019212025A1 publication Critical patent/WO2019212025A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures

Definitions

  • the present invention relates to a lighting device and a method for controlling the lighting device.
  • This application claims priority on May 2, 2018 based on Japanese Patent Application No. 2018-088865 for which it applied to Japan, and uses the content here.
  • Lighting devices that reproduce natural light such as sunlight and the sky are known.
  • This lighting device adjusts the light emitted from a white light emitting diode (light-emitting diode: LED) to a wavelength close to that of sunlight, and scatters and transmits the light emitted from the LED. And create sky of various colors.
  • LED white light emitting diode
  • Patent Document 1 describes a first light source that emits a beam of visible light, an inner surface and an outer surface that receive the beam of visible light, and is bounded by the visible light beam. And an artificial lighting system (illuminating device) including a diffuse light generator that is at least partially transparent.
  • the illumination system of Patent Document 1 simulates natural light using the Rayleigh scattering phenomenon in a diffuse light generator.
  • the color of visible light emitted from the first light source and the arrangement of the diffused light generator are fixed, the reproduced sky color is fixed, and various sky colors are obtained.
  • the various sky includes, for example, the morning sky, the daytime sky, the evening sky, the spring, summer, autumn and winter blue sky of Japan, the blue sky of the Mediterranean, and the blue sky of the Nordic countries.
  • the present invention has been made to solve the above problems, and provides a lighting device and a lighting device control method capable of expressing various sky colors.
  • the first light supplied from the end surface is emitted from the first main surface
  • the second light supplied from the second main surface parallel to the first main surface is the first light.
  • a light guide plate that emits light from one main surface; a plurality of first light sources that supply light of a plurality of different colors from the end surface to the light guide plate; and white light that is supplied from the second main surface to the light guide plate.
  • a control unit that controls the first light source and the second light source.
  • FIG. 4 is an enlarged view of a part of the xy chromaticity diagram shown in FIG. 3, and is a diagram for explaining a coordinate difference ⁇ uv.
  • 2 is a graph showing an emission spectrum distribution of a 1-1 light source of the illumination device shown in FIG. 2 is a graph showing an emission spectrum distribution of a 1-2 light source of the illumination device shown in FIG.
  • FIG. 3 is a graph showing an emission spectrum distribution of the first to third light sources of the illumination device shown in FIG. 4 is a graph showing an emission spectrum distribution of a first to fourth light sources of the illumination device shown in FIG. It is a graph which shows the illuminance distribution of an example of the sky reproduced with the illuminating device shown in FIG. It is the schematic which shows an example of the illuminating device of 2nd Embodiment. It is the schematic of the principal part of FIG. It is the schematic which shows an example of the illuminating device of 3rd Embodiment.
  • FIG. 1 is a schematic diagram showing a configuration of an illumination device 300A according to the first embodiment of the present invention.
  • the illumination device 300A of the first embodiment artificially reproduces the sky in the illumination target space such as the room 30.
  • the lighting device 300 ⁇ / b> A is installed on the ceiling of the room 30 and illuminates the inside of the room 30 from the ceiling.
  • the illumination device 300A includes at least a light guide plate 146, a first light source 112, a second light source 122, and a control unit 160.
  • the lighting device 300A includes a housing 170, a folding mirror 190, and a black box structure 180.
  • the casing 170 is installed on the ceiling of the room 30.
  • the housing 170 can be installed on the side opposite to the room 30 with respect to the side wall surface.
  • the second light source 122, the folding mirror 190, the light guide plate 146, the first light source 112, the control unit 160, and the black box structure 180 are housed in the housing 170 and are not shown at a predetermined position in the housing 170. It is supported by the member.
  • two directions parallel to the ground surface G and orthogonal to each other are defined as an X direction and a Y direction.
  • a height direction orthogonal to the X axis and the Y axis is taken as a Z direction.
  • the light guide plate 146 is disposed in the opening 171 so that at least a part of the first main surface 146a of the light guide plate 146 is exposed. In FIG. 1, the exposed portion A is exposed in the room 30.
  • the light guide plate 146 is a plate-shaped light guide member, and includes a first main surface 146a and a second main surface 146b that is opposite to the first main surface 146a in the Z direction and parallel to the first main surface 146a.
  • the first main surface 146a and the second main surface 146b have end surfaces 146c and 146d that connect the outer peripheral ends of the first main surface 146a and the second main surface 146b along the Z direction.
  • FIG. 2 is a plan view showing the arrangement of the light guide plate 146 and the first light source 112.
  • the light guide plate 146 emits light (first light) L1 supplied from the end surfaces 146c and 146d from the first main surface 146a and light (second light) L2 supplied from the second main surface 146b. Is emitted from the first main surface 146a.
  • the shape of the light guide plate 146 of the first embodiment viewed from the upper side to the lower side in the Z direction (hereinafter sometimes referred to as planar view) is a rectangle as shown in FIG.
  • the light guide plate 146 has a first end surface 146c and a second end surface 146d that are parallel to the Y direction and parallel to each other, and an end surface that is parallel to the X direction and parallel to each other.
  • 146e and 146f have four end faces (that is, side faces).
  • the light guide plate 146 causes the light L1 supplied from at least one of the first end surface 146c, the second end surface 146d, and the end surfaces 146e and 146f to be internally reflected repeatedly within the light guide plate 146, and further inside the light guide plate 146.
  • the light is emitted from the first main surface 146a by the action of the scattering particles.
  • Examples of the light guide plate 146 that can exhibit this function include a base material that is colorless and transparent to visible light and includes a light diffusing material having an average particle diameter of 300 nm or more.
  • the aforementioned substrate is made of, for example, methacrylic resin (PMMA), polycarbonate resin (PC), glass, or the like.
  • the light guide plate 146 preferably has a light transmittance of 80% or more in visible light and a dispersion having a haze of 20% or less.
  • visible light refers to electromagnetic waves having a wavelength of at least 380 nm to 780 nm, preferably 400 nm to 720 nm.
  • the light guide plate 146 emits the light L1 supplied from at least one of the first end surface 146c, the second end surface 146d, and the end surfaces 146e and 146f from the first main surface 146a, and the second main surface 146a.
  • the light L2 supplied from the surface 146b can be emitted from the first main surface 146a, it is not limited to the light transparent material including the light diffusing material as described above.
  • the first light source 112 is disposed on each of the first end surface 146c and the second end surface 146d of the light guide plate 146.
  • the first light source 112 includes a plurality of LEDs that supply light of different colors in the spectrum.
  • the plurality of LEDs are arranged at predetermined intervals in the Y direction. The predetermined interval is appropriately set so that light L1 emitted from LEDs adjacent in at least the Y direction is well mixed in the exposed portion A.
  • the plurality of LEDs arranged on the first end surface 146c and the second end surface 146d of the light guide plate 146 are a blue LED 112B that creates sky blue, and a white LED (first white for expressing various sky).
  • the blue LED 112B emits blue light. Blue light has at least one peak, for example, between wavelengths 400 nm and 480 nm.
  • the white LED 112W emits white light.
  • White light is light emitted from a phosphor excited by light having a wavelength of 400 nm to 480 nm, for example, and has at least one peak between wavelengths 480 nm and 650 nm.
  • the color temperature of white light is, for example, 4000K to 6700K.
  • the green LED 112G emits green light.
  • the green light has at least one peak between wavelengths 480 nm and 580 nm, for example.
  • the red LED 112R emits red light.
  • the red light has at least one peak between wavelengths 580 nm and 750 nm, for example.
  • the light bulb color LED 112E emits light bulb color light.
  • the light bulb color light is, for example, white light emitted from a phosphor excited by light having a wavelength of 400 nm to 480 nm, and has at least one peak between wavelengths 480 nm to 650 nm.
  • the color temperature of light bulb color light is, for example, 2000K to 4000K.
  • a blue LED 112B, a green LED 112G, and a light bulb color LED 112E are arranged on the first end surface 146c and the second end surface 146d.
  • the blue LED 112B, the green LED 112G, and the light bulb color LED 112E supply blue light, green light, and light bulb color light to the inside of the light guide plate 146 from the first end surface 146c and the second end surface 146d, respectively.
  • the white LED 112W and the red LED 112R are disposed only on the second end surface 146d of the first end surface 146c and the second end surface 146d.
  • the white LED 112W and the red LED 112R supply white light and red light to the inside of the light guide plate 146 from the second end face 146d.
  • the emission end faces of the LEDs of each color are appropriately separated from the first end face 146c and the second end face 146d in the X direction.
  • the blue LED 112B or the green LED 112G and the light bulb color LED 112E are alternately arranged on the first end surface 146c along one direction in the Y direction (in FIG. 2, from the right side to the left side in the drawing). Yes.
  • the blue LED 112B and the green LED 112G arranged on the first end face 146c are referred to as a 1-1 light source LS1-1
  • the light bulb color LED 112E arranged on the first end face 146c is referred to as a first to fourth light source LS1-4.
  • the 1-1 light source LS1-1 and the 1-4 light source LS1-4 are alternately arranged along the Y direction.
  • the blue LED 112B or the green LED 112G is arranged as the first light source LS1-1 is appropriately determined in consideration of the sky color spectrum reproduced by the lighting device 300A. Further, the 1-1 light source LS1-1 and the 1-4 light source LS1-4 do not necessarily have to be arranged alternately along the Y direction on the first end surface 146c. The LS1-1 and the first to fourth light sources LS1-4 are arranged in a desired order in consideration of the sky color spectrum reproduced by the illumination device 300A.
  • the blue LED 112B, the red LED 112R, the white LED 112W, the green LED 112G, and the light bulb color LED 112E are arranged along one direction in the Y direction.
  • the blue LED 112B, the white LED 112W, and the green LED 112G arranged on the second end face 146d are referred to as a 1-2 light source LS1-2
  • the red LED 112R and the light bulb color LED 112E are referred to as a 1-3 light source LS1-3.
  • the 1-2 light source LS1-2 and the 1-3 light source LS1-3 are arranged in a desired order along the Y direction.
  • the blue LED 112B, the white LED 112W, or the green LED 112G is arranged as the first light source LS1-2 is appropriately determined in consideration of the spectrum of the sky color reproduced by the lighting device 300A.
  • the red LED 112R or the light bulb color LED 112E is arranged as the first to third light source LS1-3 is appropriately determined in consideration of the sky color spectrum reproduced by the lighting device 300A.
  • the predetermined order of the 1-2 light source LS1-2 and the 1-3 light source LS1-3 arranged on the second end surface 146d along the Y direction is the sky color spectrum reproduced by the lighting device 300A, etc. Can be determined as appropriate.
  • each of the blue LED 112B, the white LED 112W, the green LED 112G, the red LED 112R, and the light bulb color LED 112E arranged on the first end surface 146c and the second end surface 146d is connected to the control unit 160 by the control line 114. ing. The on / off of the LEDs of the respective colors and the amount of light are controlled by the control unit 160 as described later.
  • the black box structure 180 is disposed outside the light guide plate 146 facing the second main surface 146b.
  • the black box structure 180 includes a black box body 183 formed in a box shape with a bottom and a bottom, and a partition plate 184 provided inside the black box body 183.
  • the black box body 183 is attached to the housing 170.
  • the bottom of the black box body 183 is open so as to include the opening 171 of the housing 170.
  • the interior of the black box body 183 forms an internal space S222 in which the second light source 122 is disposed.
  • the internal space S222 is partitioned by the partition plate 184 into an internal space S22 including the light guide plate 146 and an internal space S21 not including the light guide plate 146 in the X direction.
  • An opening 185 is formed in the partition plate 184.
  • the black box body 183 at least the surface facing the internal space S222 and the surface of the partition plate 184 are painted with black paint or made of a black material. Thereby, the reflectance of visible light on the surface inside the black box structure 180 (that is, the side facing the internal space S222) is reduced, and the visible light is appropriately absorbed by the black box structure 180.
  • the second light source 122 is disposed in the internal space S21 and supplies at least white light to the light guide plate 146 from the second main surface 146b side.
  • the second light source 122 includes a plurality of white LEDs (second white light emitting diodes) 122W and a plurality of light bulb color LEDs (second light bulb color light emitting diodes) 122E, and emits light L2 in which white light and light bulb colors are mixed.
  • the light L2 has substantially the same spectral distribution as sunlight, moon light formed by reflection of sunlight by the moon, and the like.
  • the white LED 122W is the first 1-6 light source LS1-6
  • the light bulb color LED 122E is the first 1-7 light source LS1-7.
  • Outgoing surfaces (not shown) of the white LED 122W and the light bulb color LED 122E are such that the light L2 emitted from the second light source 122 passes through the opening 185, is folded back by the folding mirror 190, and enters the light guide plate 146 from the second main surface 146b side.
  • Each of the white LED 122W and the light bulb color LED 122E is connected to the control unit 160 by a control line 115. The on / off of each color LED and the amount of light are controlled by the control unit 160 as described later.
  • the folding mirror 190 has a reflecting surface 190r.
  • the reflection surface 190r faces the emission surfaces of the plurality of white LEDs 122W and the light bulb color LEDs 122E and the second main surface 146b of the light guide plate 146 at different angles.
  • the folding mirror 190 is rotatable about the shaft 191 in the direction of the arrow R190.
  • the shaft 191 is connected to the control unit 160 via the control line 116.
  • the rotation angle of the folding mirror 190 around the axis 191 along the direction of the arrow R190 is appropriately adjusted by the control unit 160.
  • the incident angle of the light L2 on the second main surface 146b is adjusted by the rotation angle of the folding mirror 190.
  • the blue LED 112B, the white LED 112W, the green LED 112G, the red LED 112R, and the light bulb color LED 112E of the first light source 112, and the white LED 122W and the light bulb color LED 122E of the second light source 122 are turned on / off, light intensity, and emission color (exclusively white) are driven. Controlled by current.
  • the above-described drive current is supplied from the control unit 160 to each color LED via a control line (not shown).
  • the ratio between the total number of blue LEDs 112B and the total number of green LEDs 112G is 5: 2 in the plurality of 1-1 light sources LS1-1 arranged on the end surface 146c of the light guide plate 146. Further, in the plurality of first and second light sources LS1-2 arranged on the end surface 146d of the light guide plate 146, the ratio of the total number of blue LEDs 112B, the total number of white LEDs 112W, and the total number of green LEDs 112G is 4: 2: 1.
  • the ratio of the total number of blue LEDs 112B, the total number of white LEDs 112W, and the total number of green LEDs 112G is 4: 2: 1.
  • the ratio of the total number of red LEDs 112R to the total number of bulb color LEDs 112E is 1: 1.
  • the blue LED 112B and the green LED 112G of the 1-1 light source LS1-1 are turned on by the control from the control unit 160, the blue light LB and the green light LG are incident on the light guide plate 146 from the first end surface 146c and enter the exposed portion A. Mix together to reach.
  • the blue LED 112B and the green LED 112G of the 1-1 light source LS1-1 are respectively lit at the maximum light amount, deep blue light L3 is generated in the exposed portion A and emitted from the first main surface 146a toward the room 30.
  • the light L3 is represented by coordinates (x1, y1) shown in the xy chromaticity diagram of FIG. 3, for example.
  • FIG. 5 is an example of an emission spectrum distribution of the light L3.
  • the blue LED 112B, the white LED 112W, and the green LED 112G of the 1-2 light source LS1-2 are turned on by the control from the control unit 160, the blue light LB, the white light LW, and the green light LG are transmitted from the second end face 146d.
  • the light enters the light guide plate 146 and is mixed with each other before reaching the exposed portion A.
  • the blue LED 112B, white LED 112W, and green LED 112G of the first-second light source LS1-2 are respectively lit at the maximum light amount, bright light blue light L4 is generated in the exposed portion A and is directed from the first main surface 146a toward the room 30. Are emitted.
  • the light L4 is represented by coordinates (x2, y2) shown in the xy chromaticity diagram of FIG. 3, for example.
  • FIG. 6 is an example of an emission spectrum distribution of the light L4.
  • the red LED 112R and the light bulb color LED 112E of the first to third light sources LS1-3 are turned on by the control from the control unit 160, the red light LR and the light bulb color light LE enter the light guide plate 146 from the second end face 146d. , They are mixed with each other until reaching the exposed portion A.
  • the red LED 112R and the light bulb color LED 112E of the first to third light sources LS1-3 are respectively lit at the maximum light amount, reddish orange light L5 is generated in the exposed portion A and from the first main surface 146a toward the room 30. Emitted.
  • the light L5 is represented, for example, by coordinates (x3, y3) shown in the xy chromaticity diagram of FIG.
  • FIG. 7 is an example of an emission spectrum distribution of the light L5.
  • the light bulb color LED 112E of the first to fourth light sources LS1-4 when the light bulb color LED 112E of the first to fourth light sources LS1-4 is turned on by the control from the control unit 160, the light bulb color light LE enters the light guide plate 146 from the first end face 146c. Further, the bright white orange light L6 is emitted from the first main surface 146a toward the room 30.
  • the light L6 is light that is generated due to the light bulb color light LE, and is represented by, for example, coordinates (x4, y4) shown in the xy chromaticity diagram of FIG.
  • FIG. 8 is an example of an emission spectrum distribution of the light L6.
  • the white LED 122W of the first to sixth light sources LS1-6 when the white LED 122W of the first to sixth light sources LS1-6 is turned on by the control from the control unit 160, the white light LW passes through the opening 185 and is reflected by the reflecting surface 190r of the folding mirror 190, and the second main surface 146b. The light enters the light guide plate 146 from the side.
  • the light bulb color LED 122E of the first to seventh light sources LS1-7 is turned on by the control from the control unit 160, the light bulb color light LE enters the light guide plate 146 from the second main surface 146b side.
  • White light LW and light bulb color light LE incident on the light guide plate 146 from the second main surface 146b are blue light LB, green light LG incident from the first end surface 146c and the second end surface 146d inside the light guide plate 146, and Compared with the white light LW, the red light LR, and the light bulb color light LE, the light does not diffuse in the traveling direction and is emitted from the first main surface 146a toward the room 30 as substantially parallel light.
  • the light L7 emitted from the white LED 122W of the first 1-6 light source LS1-6 and emitted from the first main surface 146a is represented, for example, by coordinates (x6, y6) shown in the xy chromaticity diagram of FIG. Bright white light with a slight bluish tint.
  • the light L8 emitted from the light bulb color LED 122E of the first to seventh light source LS1-7 and emitted from the first main surface 146a is expressed by coordinates (x7, y7) shown in the xy chromaticity diagram of FIG. 3, for example. It is bright white light with an orange color.
  • the line LK shown in the xy chromaticity diagrams of FIGS. 3 and 4 represents black body radiation.
  • the drive current and control signal supplied from the control unit 160 to each color LED are the 1-2 light source LS1-2 and the 1-3 light source LS1-3 except the 1-1 light source LS1-1.
  • the light quantity of each color LED constituting each of the first to fourth light sources LS1-4, the first to sixth light sources LS1-6, and the first to seventh light sources LS1-7 and the coordinate difference ⁇ uv from the line LK in the emission spectrum distribution are ⁇ It is appropriately controlled so as to be 0.02 or less.
  • the control unit 160 turns on the first light source LS1-1 and the first light source LS1-2.
  • light having an illuminance distribution illustrated in FIG. 9 is emitted from the first main surface 146 a toward the room 30, and a deep bluish sky is reproduced on the light guide plate 146.
  • the control unit 160 turns on the first-3 light sources LS1-3 and the first-4 light sources LS1-4.
  • light similar to sunlight in the early morning or evening is emitted from the first main surface 146a toward the room 30, and the orange or reddish orange sky peculiar to the early morning or evening is reproduced on the light guide plate 146.
  • the control unit 160 causes the first light source LS1-1, the first 1-2 light source LS1-2, the first-3 light source LS1-3, and the first-4 light source LS1.
  • the sky that changes every moment is reproduced.
  • the first to fourth light sources LS1-4 are turned on to reproduce the orange sky.
  • the first to third light sources LS1-3 are turned on with the first to fourth light sources LS1-4 being turned on, and the light guide plate 146 closer to the first end surface 146c than the substantially central portion of the light guide plate 146 in the X direction is turned on. Reproduces a reddish orange sky.
  • the first to fourth light sources LS1-4 are turned off, the first to first light sources LS1-1 are turned on with the first to third light sources LS1 to lit, and the light guide plate 146 in the X direction is approximately centered. Reproduces a bluish sepia sky on the light guide plate 146 closer to the second end face 146d than the portion.
  • the 1-3 light source LS1-3 is turned off, the 1-2 light source LS1-2 is turned on with the 1-1 light source LS1-1 turned on, and the light guide plate 146 in the X direction is substantially centered.
  • the blue sky at the time of jaundice is reproduced on the light guide plate 146 closer to the first end face 146c than the part. Each sky is reproduced on the light guide plate 146 in this order, thereby expressing a change in the sky near the horizon.
  • the control unit 160 turns on the first to sixth light sources LS1-6 and the first to seventh light sources LS1-7.
  • this illumination example light in which the light L7 and L8 are mixed with the light emitted from the first main surface 146a in the first to third illumination examples is emitted from the first main surface 146a toward the room 30. The As a result, the sun is reproduced in the blue sky or orange sky reproduced on the light guide plate 146.
  • Table 1 is an example of control values (that is, relative lighting intensity) for expressing the daytime sky and the evening sky in this lighting example.
  • the illuminating device 300A of the first embodiment described above receives light L1 supplied from the end surface (that is, at least one of the first end surface 146c, the second end surface 146d, and the end surfaces 146e and 146f) from the first main surface 146a.
  • a light guide plate 146 that emits light L2 emitted from the second main surface 146b from the first main surface 146a, and a plurality of light L1 of a plurality of colors that are different from each other from the end surface to the light guide plate 146.
  • the light L1, L4, and L5 emitted from the first main surface 146a are adjusted by using the control unit 160 to adjust the amount of light L1 of a plurality of colors.
  • L6 can freely change the illuminance distribution to reproduce the sky of various colors on the light guide plate 146.
  • control unit 160 is used to adjust the light amount of the light L2 emitted from the second light source 122, and various natural conditions such as the sun and the moon reflected by the sun.
  • the sky can be artificially reproduced.
  • the first light source 112 includes a blue LED 112B and a white LED 112W.
  • the illumination device 300 ⁇ / b> A having the above-described configuration the light quantity of the blue LED 112 ⁇ / b> B and the white LED 112 ⁇ / b> W that produce sky blue and brightness can be adjusted using the control unit 160, and various blue sky can be expressed on the light guide plate 146.
  • the first light source 112 further includes a green LED 112G.
  • the control unit 160 is used to adjust the light amount of the green LED 112G that adds green to the sky blue, and the light guide plate 146 is deeper than the case where the green LED 112G is not provided. You can express a blue sky.
  • the light guide plate 146 has a first end surface 146c, a second end surface 146d, and end surfaces 146e and 146f.
  • the blue LED 112B supplies blue light LB to the light guide plate 146 from the first end surface 146c and the second end surface 146d
  • the white LED 112W supplies white light LW to the light guide plate 146 from the second end surface 146d.
  • the blue component of light supplied from first end surface 146c to light guide plate 146 is stronger than the blue component of light supplied from second end surface 146d to light guide plate 146. .
  • the color (that is, the light amount distribution) of the light guide plate 146 where the user U can see the user U changes depending on the direction in which the light guide plate 146 is viewed, and a more natural blue sky can be expressed.
  • the first light source 112 further includes a red LED 112R and a light bulb color LED 112E.
  • the control unit 160 is used to adjust the light amounts of the red LED 112R and the light bulb color LED 112E that produce the orange color with sky orange or red, and the light guide plate 146 has various evenings. Can express the sky.
  • the light bulb color LED 112E supplies the light bulb color light LE to the light guide plate 146 from the first end surface 146c and the second end surface 146d, and the red LED 112R is guided from the second end surface 146d.
  • Red light LR is supplied to the light plate 146.
  • the red component of light is supplied from the second end surface 146d to the light guide plate 146.
  • the second light source 122 includes a white LED 122W and a light bulb color LED 122E.
  • the light amount of the white LED 122W and the light bulb color LED 122E is adjusted using the control unit 160, and the light guide plate 146 has a strong white daytime sun or a strong reddish evening. I can express the sun.
  • the lighting apparatus 300A of the first embodiment further includes a black box structure 180 that is disposed outward from the second main surface 146b of the light guide plate 146 and has a reduced visible light reflectance.
  • a black box structure 180 that is disposed outward from the second main surface 146b of the light guide plate 146 and has a reduced visible light reflectance.
  • the first light source 112 includes a blue LED 112B, a white LED 112W, a red LED 112R, and a light bulb color LED 112E.
  • the controller 160 expresses the daytime sky by turning on the blue LED 112B and the white LED 112W, and expresses the evening sky by turning on the red LED 112R and the light bulb color LED 112E. According to the lighting device 300A having the above-described configuration, it is possible to represent a blue sky often seen during the day or a reddish evening sky.
  • the control method of the lighting device 300A of the first embodiment is a control method of the lighting device 300A, and the control unit 160 lights the blue LED 112B and the white LED 112W to express the daytime sky, and the red LED 112R and the light bulb color.
  • the evening sky is expressed by turning on the LED 112E. According to the control method of the lighting apparatus 300A having the above-described configuration, it is possible to represent not only the above-described blue sky but also the morning sky and the evening sky.
  • FIG. 10 is a schematic diagram illustrating a configuration of an illumination device 300B according to the second embodiment of the present invention.
  • the lighting device 300B has the same configuration as the lighting device 300A according to the first embodiment. Therefore, in the following, a configuration different from the illumination device 300A in the illumination device 300B will be described, and a description of a configuration common to the illumination device 300A will be omitted.
  • the same reference numerals as those of the lighting device 300A are given to the components common to the lighting device 300A among the configurations of the lighting device 300B.
  • the position and inclination of the folding mirror 190 are changed from the position and inclination of the folding mirror 190 in the illumination device 300A.
  • the lower end of the folding mirror 190 in the Z direction is defined as position B
  • the upper end of the light guide plate 146 opposite to the folding mirror 190 in the X direction is defined as position C1-1.
  • the folding mirror 190 is arranged so that the perpendicular line N drawn from the reflecting surface 190r toward the light guide plate 146 is positioned above the straight line I connecting the positions B and C1-1 in the Z direction.
  • the illumination example by the illumination device 300B and the control method for the illumination device 300B are the same as the illumination example by the illumination device 300A and the control method for the illumination device 300A.
  • the folding mirror 190 is arranged so that the perpendicular N is above the straight line I in the Z direction. Therefore, in the room 30, the user U looks into the folding mirror 190 through the light guide plate 146 from the path of the light L7, L8 or from above the path of the light L7, L8 (that is, outside the path of the light L7, L8 in the X direction). In this case, the light guide plate 146 in the light emitting state is not visually recognized by the user U on the reflection surface 190r. Therefore, the user U cannot see the light guide plate 146 through the folding mirror 190.
  • FIG. 11 As shown in FIG. 11, at least a part (exposed portion A in FIG. 1) of the first main surface 146 a of the light guide plate 146 is exposed in the opening 171. Therefore, when mask processing is performed on the second main surface 146b in accordance with the opening 171, an arbitrary position on the end surface opposite to the folding mirror 190 in the X direction of the mask M (that is, when the mask M is very thin) The position of the edge) may be changed to the position C1-2 instead of the position C1-1. Further, the position that is closest to the lower end in the Z direction near the end surface of the opening 171 opposite to the folding mirror 190 in the X direction may be a position C1-3 instead of the position C1-1.
  • both the position and the tilt of the folding mirror 190 are changed from the position and the tilt of the folding mirror 190 in the first embodiment.
  • only one of the position and tilt of the folding mirror 190 may be changed.
  • the lower end of the folding mirror 190 in the Z direction is set as the position B
  • the upper end of the light guide plate 146 opposite to the folding mirror 190 in the X direction is set as the position C1-1.
  • the folding mirror 190 is arranged so that the perpendicular N drawn from the reflecting surface 190r toward the light guide plate 146 is above the straight line I connecting the positions B and C1-1 in the Z direction. If the folding mirror 190 is arranged as described above, the light L2 may not be irradiated to the exposed portion A of the light guide plate 146 near the second main surface 146b.
  • FIG. 12 is a schematic diagram showing a configuration of a lighting apparatus 300C according to the third embodiment of the present invention.
  • the lighting device 300C has the same configuration as that of a part of the lighting device 300A according to the first embodiment. Therefore, in the following, a configuration different from the illumination device 300A in the illumination device 300C will be described, and a description of a configuration common to the illumination device 300A will be omitted.
  • symbol as 300 A of illuminating devices is attached
  • the black box structure 180 includes a black box body 183 and partition plates 184 and 186 provided inside the black box body 183.
  • the partition plates 184 and 186 are arranged inside the black box body 183 so as to partition the internal space S222 into an internal space S22 including the light guide plate 146 and internal spaces S21 and S23 not including the light guide plate 146 in the X direction. ing.
  • An opening 187 is formed in the partition plate 186.
  • a folding mirror 190A is disposed with the reflection surface 190r facing the internal space S23.
  • a folding mirror 190B is disposed on the upper surface of the housing 170 in the internal space S22 with the reflecting surface 190r facing the internal space S22.
  • the light L2 emitted from the second light source 122 passes through the opening 185, is reflected by the reflecting surface 190r of the folding mirror 190A, passes through the opening 187, and is reflected by the reflecting surface 190r of the folding mirror 190B.
  • the light enters the light guide plate 146 from the two main surfaces 146b.
  • the illumination example by the illumination device 300C and the control method for the illumination device 300C are the same as the illumination example by the illumination device 300A and the control method for the illumination device 300A.
  • a space is required to refract the light L2 twice in the internal space S222, and the housing 170 is compared with the housing 170 of the first embodiment and the second embodiment. May become large.
  • the illumination device 300C of the third embodiment as shown in FIG. 12, if the folding mirrors 190A and 190B are not arranged in the region overlapping the light guide plate 146 in the X direction, Or, when the user U looks into the internal space S222 through the light guide plate 146 from the upper side of the path of the light L7, L8 (that is, outside the path of the light L7, L8 in the X direction), the user U passes the folding mirror 190B.
  • the light guide plate 146 emitting light It is possible to prevent the light guide plate 146 emitting light from being visible. Moreover, since the optical path length of the light L2 can be secured long, the light L2 is irradiated to the entire exposed portion A of the light guide plate 146 on the second main surface 146b side, and the light emitted from the light guide plate 146 on the first main surface 146a side. The spread of L7 and L8 can be reduced.
  • a neutral gray plate member may be provided on the first main surface 146a side of the light guide plate 146.
  • the neutral gray plate-like member as described above, it is possible to prevent the first main surface 146a of the light guide plate 146 from being damaged and dirty, and the internal space S222 from being excessively visible.
  • a glass plate may be provided on the first main surface 146a side of the light guide plate 146 from the viewpoint of fire prevention measures.
  • the blue LED 112B, the green LED 112G, and the light bulb color LED 112E are disposed on both the first end surface 146c and the second end surface 146d.
  • the blue light LB, the green light LG, and the light bulb color light LE are supplied to the light guide plate 146 from both the first end surface 146c and the second end surface 146d.
  • the white LED 112W and the red LED 112R are disposed only on the second end surface 146d, and the white light LW and the red light LR are supplied to the light guide plate 146 only from the second end surface 146d.
  • each LED may be arranged on at least one end face of the four end faces 146c, 146d, 146e, 146f of the light guide plate 146.
  • the green LED 112G may be disposed only on the first end surface 146c
  • the green light LG may be supplied from only the first end surface 146c to the light guide plate 146
  • the white LED 112W is disposed on both the first end surface 146c and the second end surface 146d.
  • the white light LW may be supplied to the light guide plate 146 from both the first end surface 146c and the second end surface 146d.
  • LEDs may be disposed on the end surfaces 146e and 146f other than the first end surface 146c and the second end surface 146d, and light may be supplied from the end surfaces 146e and 146f to the light guide plate 146.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

Selon la présente invention, un dispositif d'éclairage comprend : une plaque de guidage de lumière qui émet, à partir d'une première surface principale, une lumière fournie par une première surface d'extrémité et une seconde surface d'extrémité et qui émet, à partir de la première surface principale, de la lumière fournie par une seconde surface principale parallèle à la première surface principale ; de multiples premières sources de lumière qui fournissent de la lumière de multiples couleurs ayant des spectres mutuellement différents de la première surface d'extrémité et de la seconde surface d'extrémité à la plaque de guidage de lumière ; une seconde source de lumière qui fournit de la lumière blanche de la seconde surface principale à la plaque de guidage de lumière ; et une unité de commande qui commande les premières sources de lumière et la seconde source de lumière.
PCT/JP2019/017558 2018-05-02 2019-04-25 Dispositif d'éclairage et procédé de commande de dispositif d'éclairage Ceased WO2019212025A1 (fr)

Priority Applications (1)

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JP2018-088865 2018-05-02
JP2018088865 2018-05-02

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WO2019212025A1 true WO2019212025A1 (fr) 2019-11-07

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CN111623303A (zh) * 2020-06-03 2020-09-04 欧普照明股份有限公司 仿自然光的照明模组和灯具
CN112762383A (zh) * 2021-02-08 2021-05-07 惠州市西顿工业发展有限公司 一种模拟自然光照的灯具
JP2022010768A (ja) * 2020-06-29 2022-01-17 三菱電機株式会社 照明器具
CN115362337A (zh) * 2020-04-10 2022-11-18 三菱电机株式会社 照明器具、空调机以及控制系统
WO2023041728A1 (fr) * 2021-09-20 2023-03-23 Signify Holding B.V. Lucarne artificielle
EP4119838A4 (fr) * 2020-06-29 2023-08-30 Suzhou Opple Lighting Co., Ltd. Appareil d'éclairage

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JP7438417B2 (ja) 2020-04-10 2024-02-26 三菱電機株式会社 照明器具および制御システム
CN115362337B (zh) * 2020-04-10 2025-09-19 三菱电机株式会社 照明器具、空调机以及控制系统
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CN115362337A (zh) * 2020-04-10 2022-11-18 三菱电机株式会社 照明器具、空调机以及控制系统
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CN111623303A (zh) * 2020-06-03 2020-09-04 欧普照明股份有限公司 仿自然光的照明模组和灯具
JP2022010768A (ja) * 2020-06-29 2022-01-17 三菱電機株式会社 照明器具
EP4119838A4 (fr) * 2020-06-29 2023-08-30 Suzhou Opple Lighting Co., Ltd. Appareil d'éclairage
JP7550549B2 (ja) 2020-06-29 2024-09-13 三菱電機株式会社 照明器具
CN111623302A (zh) * 2020-06-29 2020-09-04 欧普照明股份有限公司 照明灯具
CN112762383A (zh) * 2021-02-08 2021-05-07 惠州市西顿工业发展有限公司 一种模拟自然光照的灯具
WO2023041728A1 (fr) * 2021-09-20 2023-03-23 Signify Holding B.V. Lucarne artificielle
US12492787B2 (en) 2021-09-20 2025-12-09 Signify Holding B.V. Artificial skylight

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