WO2023112392A1 - Dispositif électroluminescent - Google Patents

Dispositif électroluminescent Download PDF

Info

Publication number
WO2023112392A1
WO2023112392A1 PCT/JP2022/031596 JP2022031596W WO2023112392A1 WO 2023112392 A1 WO2023112392 A1 WO 2023112392A1 JP 2022031596 W JP2022031596 W JP 2022031596W WO 2023112392 A1 WO2023112392 A1 WO 2023112392A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
color temperature
wavelength
mrgc
stimulation
Prior art date
Application number
PCT/JP2022/031596
Other languages
English (en)
Japanese (ja)
Inventor
弘 桐原
健 森田
Original Assignee
株式会社エルム
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社エルム filed Critical 株式会社エルム
Publication of WO2023112392A1 publication Critical patent/WO2023112392A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
    • A61M21/02—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/105—Controlling the light source in response to determined parameters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/16—Controlling the light source by timing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the present invention relates to a light-emitting device capable of adjusting biorhythm.
  • the innate biorhythms of humans are affected by the light environment such as the illuminance, color temperature, and spectral distribution of light experienced over time.
  • the light environment is involved in the quality of sleep, such as the sleep-wake rhythm of the daily biorhythm, falling asleep at bedtime, awakening in the middle of sleep, and the feeling of deep sleep when waking up, and the quality of sleep affects human health. affect. Therefore, a suitable light environment is necessary for a healthy life of human beings.
  • the biorhythms of inpatients and people requiring nursing care who spend most of their day on or around a bed in a hospital room in a medical facility or a living room in a nursing care facility are strongly affected by the artificial lighting environment.
  • inpatients and people requiring nursing care who spend their time near corridors, where natural light is often insufficient even in sickrooms and living rooms are more strongly affected by the artificial lighting environment.
  • the artificial lighting used in hospital rooms and living rooms includes the brightness (illuminance) and color temperature necessary for the work and behavior of the inpatients and nursing care recipients, as well as the brightness (illuminance) and color temperature necessary for the work and behavior of the inpatients and nursing care recipients.
  • a high color rendering property is required to accurately grasp the skin color and facial expressions of people.
  • living under such a light environment of artificial lighting disturbs the biorhythms of hospitalized patients and those requiring nursing care, and reduces the quality of their sleep. Disturbances in the biorhythms of hospitalized patients and those requiring nursing care, as well as poor sleep quality, increase the burden on nurses and caregivers at night. It has been pointed out that
  • a specific light source blue light source
  • a light source for dimming consisting of a white light source and a light bulb color light source
  • a control unit that controls the emission intensity of each light source.
  • a lighting system capable of improving the biorhythm while performing daily life by changing the emission intensity of a specific light source according to the time period. It is known that blue light (light having a wavelength of around 460 nm) contained in the light emitted from the specific light source suppresses melatonin secretion. High melatonin secretion promotes sleep, while low melatonin secretion inhibits sleep.
  • the luminescence intensity of the specific light source is set to be low during the period, and the luminescence intensity of the specific light source is set to be high during other time periods.
  • Patent Document 2 A lighting system has been proposed (Patent Document 2).
  • the lighting system described in Patent Document 1 does not take color rendering into consideration, and depending on the object, it may look unnatural.
  • the lighting system described in Patent Document 2 takes into consideration the color rendering properties, the glare is high in the daytime and the illuminance is low in the hours before bedtime. It was inadequate to apply to a living room.
  • the problem to be solved by the present invention is to provide a light-emitting device capable of creating a light environment in which the biorhythm can be adjusted and ensuring high color rendering properties at various color temperatures.
  • a light-emitting device which has been made to solve the above problems, A first light emitter that emits light having a wavelength width characteristic that has a peak wavelength within a wavelength range of 480 nm to 510 nm and a half-value wavelength width on both sides of 20 nm or less, and a peak wavelength within a wavelength range of 440 nm to 480 nm. , a second light emitter that emits light having a wavelength width characteristic in which both side half-value wavelength widths are 20 nm or less; and a peak wavelength of light emitted by the first light emitter and the second light emitter within a wavelength range of 450 nm to 700 nm.
  • a light-emitting unit including a wide light-emitting body that emits light having a wavelength width characteristic in which the peak wavelength is different from any of the above and the half-value wavelength width on the long wavelength side is 30 nm or more;
  • a control unit capable of independently controlling the emission intensity of the light emitted from the first light emitter, the second light emitter, and the wide light emitter is provided.
  • the "peak wavelength” means the wavelength of the top of the peak (peak top) seen on the spectrum of the light emitted by the light emitter.
  • the "half-value wavelength width on both sides” means the wavelength width of the peak at the position where the emission intensity is 50% of the peak top
  • the "half-value wavelength width on the long wavelength side” and the “half-value wavelength width on the short wavelength side” are the width on the longer wavelength side and the width on the shorter wavelength side than the peak wavelength in the wavelength width of the peak at the position where the emission intensity is 50% of the peak top.
  • the first luminous body, the second luminous body, and the wide light luminous body preferably use a light emitting diode (LED) as a light source in terms of ease of control of light emission intensity, but not limited to this.
  • LED light emitting diode
  • each luminous body may be composed of one light source, or may be composed of a plurality of light sources. When the luminous body is composed of a plurality of light sources, all the light sources may be of the same type, or a plurality of types of light sources may be mixed.
  • Non-Patent Document 1 In general, light information received by the retina is transmitted to the brain through two different routes. One is transmitted to the visual cortex of the brain through cones and rods, resulting in the perception of brightness and color, which are functions of the visual system. The other is transmitted to the suprachiasmatic nucleus, which is the center of the biological clock, and causes non-visual system effects such as the light response of the biorhythm (regulation of the core body temperature and the phase and amplitude of the melatonin secretion rhythm, etc.). Retinal ganglion cells containing melanopsin (melanopsin expressing Retinal Ganglion Cell, hereinafter referred to as "mRGC”) play an important role in non-visual system actions (Non-Patent Document 1).
  • the cones L-cones, M-cones, S-cones
  • rods and mRGC cells that play a role in transmitting light received by the retina to the brain are referred to as "photoreceptors.”
  • Non-Patent Document 2 The present inventors clarified the effects of multi-wavelength light sources such as red, green, and blue light with localized spectral distributions and high/low color temperature light with ubiquitous spectral distributions on melatonin secretion in the pineal gland. and pointed out the problem of the spectral distribution of artificial lighting used in living environments (Non-Patent Document 2). Then, by adjusting the wavelength composition of the illumination light and using metamerism (a phenomenon in which two objects appear to have the same color under certain light wavelength composition conditions), After ensuring brightness (illuminance), light color (color temperature), and color rendering properties, we established a method to selectively and independently stimulate photoreceptors on the retina.
  • metamerism a phenomenon in which two objects appear to have the same color under certain light wavelength composition conditions
  • the peak wavelength of the light emitted by the first light emitter is close to the sensitivity peak wavelength (505 nm) of the rods of the light receivers on the retina
  • the peak wavelength of the light emitted by the second light emitter is , close to the sensitivity peak wavelength of S-cones (445 nm) and the sensitivity peak wavelength of mRGCs (490 nm).
  • the broad light emitter emits light of a broad wavelength spectrum with a wide (or large) half-value wavelength width.
  • the wavelength (540 nm) of the sensitivity peak wavelength of the L-cones (570 nm) may be included. Since the light-emitting portion is composed of a light-emitting body having such characteristic wavelength characteristics, the above method can be realized by using the light-emitting device according to the present invention.
  • the amount of stimulus to the rods can be controlled, and the light emitted by the second light emitter can be controlled.
  • the amount of stimulation to the S-cones can be controlled.
  • the amount of stimulation to rods, mRGCs, M-cones, and L-cones can be controlled.
  • the illuminance, color temperature, and color rendering properties of the emitted light from the light emitter and the amount of stimulus to each light receiver can be adjusted. can be adjusted. Therefore, the amount of stimulation to cones and rods (brightness, color, illuminance of light) is maintained constant while the amount of stimulation to mRGCs is varied, or the amount of stimulation to mRGCs is maintained constant while the amount of stimulation to cones and rods is varied. It is also possible to vary the amount of stimulus to the rods.
  • the amount of stimulus that the light emitted from the light-emitting unit gives to the light receiver is obtained by multiplying the spectral radiant energy distribution of the emitted light and the spectral sensitivity distribution of the light receiver.
  • the present inventors have so far applied metamerism to an LED lighting device equipped with a plurality of LEDs with different emission wavelengths, and have applied cones (L-cones, M-cones, S-cones ), the amount of light stimulation to mRGCs in humans affects melatonin secretion behavior and sleep sensation under the condition that the amount of stimulation to rods is constant and the output of each LED is adjusted to change the amount of stimulation to mRGCs. I have been researching the influence (Non-Patent Document 3).
  • the wide light-emitting body is A third light emitter that emits light having a wavelength width characteristic of having a peak wavelength within a wavelength range of 450 nm to 470 nm, a half-value wavelength width of 20 nm or less on the short wavelength side, and a half-value wavelength width of 50 nm or more on the long wavelength side.
  • a fourth light emitter that emits light having a wavelength width characteristic in which the peak wavelength is within a wavelength range of 540 nm to 550 nm and the half-value wavelength width on the short wavelength side and the long wavelength side is 30 nm or more;
  • the control unit can independently control the light emission intensity of the light emitted by the third to fifth light emitters.
  • the peak wavelength of light emitted by the third light emitter is close to the sensitivity peak wavelength of mRGC
  • the peak wavelength of light emitted by the fourth light emitter is close to the sensitivity peak wavelength of the M-cone
  • the peak wavelength of the light emitted by the five emitters is close to the sensitivity peak wavelength of the L-cones.
  • the emitted light from the light emitting unit can be adjusted to the amount of stimulus to mRGC, color temperature, brightness (illuminance), color rendering index (general color rendering index, Special color rendering index) can be adjusted to the optimum state.
  • the control section controls the emission intensity of the light emitted from each of the light emitters so that the color temperature of the light emitted from the light emitting section is in the range of 2500K to 15000K.
  • the light emitting device further includes a setting unit for setting the color temperature and the amount of mRGC stimulation; the color temperature and mRCG stimulus amount of the light emitted from the light emitting unit, and the emission intensity of the light emitted by each of the first light emitter, the second light emitter, and the wide light emitters (third to fifth light emitters); and a storage unit that stores information indicating the relationship of Based on the information, the control unit controls the emission intensity of each light emitter so that the color temperature and the amount of mRCG stimulation of the light emitted from the light emitting unit become the color temperature and the amount of mRCG stimulation set by the setting unit.
  • a setting unit for setting the color temperature and the amount of mRGC stimulation
  • the color temperature and mRCG stimulus amount of the light emitted from the light emitting unit the emission intensity of the light emitted by each of the first light emitter, the second light emitter, and the wide light emitters (third to fifth light emitters)
  • a storage unit that stores information
  • the information stored in the storage section can be obtained, for example, by the following procedure. That is, the luminescence distribution characteristics of each luminous body are measured in advance, and the luminous intensity of the light emitted by each luminous body when the color temperature of the emitted light from the light emitting part reaches a specified value (luminous intensity of the luminous body) is obtained by calculation, and the combination of the emission intensities of all the light emitters constituting the light emitting section is made to correspond to the color temperature of the light emitted from the light emitting section.
  • luminous intensity of the luminous body luminous intensity of the light emitters constituting the light emitting section
  • the amount of stimulus to mRGC, the general color rendering index, and the special color rendering index are calculated for a plurality of combinations of luminous intensities corresponding to the color temperatures. For example, if the emission intensity of five types of light emitters can be changed in 100 steps, for 1005 (10 billion) combinations, the amount of stimulation to mRGC (mRGC stimulation amount), the average color rendering index, and Calculate the special color rendering index. Then, from among the 100 5 combinations, a combination with the same mRGC stimulation amount is extracted, and a combination of luminous intensities with a high general color rendering index and a high special color rendering index from among those combinations ( (referred to as the “optimum combination”). When the optimum combination is selected for a plurality of combinations of luminescence intensities of light emitters corresponding to all color temperatures, the optimum combination is stored in the storage unit as information of a data table linked with color temperature and mRGC stimulation amount. do.
  • the control unit can determine the combination of the light emission intensity corresponding to the color temperature and the mRGC stimulation amount set in the setting unit. It is possible to read from the data table and adjust the emission intensity of each light emitter. By using such a data table, the emission intensity of each light emitter can be controlled without delay after the color temperature and the amount of mRGC stimulation are set. In addition, it becomes possible to easily change the amount of mRGC stimulation while maintaining a constant color temperature, or to change the color temperature while maintaining a constant amount of mRGC stimulation.
  • the setting unit may have values of the color temperature and the amount of mRGC stimulation set in advance.
  • the values of the color temperature and the amount of mRGC stimulation input through may be set in the setting unit.
  • a control program time schedule
  • the setting unit may set the color temperature and the amount of mRGC stimulation, and the control unit may control the light emission intensity of each light emitter.
  • the light-emitting device By using the light-emitting device according to the present invention, it is possible to create a light environment in which the biorhythm can be adjusted, and to ensure high color rendering properties at various color temperatures.
  • FIG. 1 is a schematic configuration diagram of a first embodiment of a light emitting device of the present invention
  • FIG. FIG. 4 is a light characteristic diagram of first to fifth light emitters (LEDs)
  • An example of a distribution map of color temperature and mRGC stimulation that satisfies the following conditions: general color rendering index (Ra) ⁇ 70, special color rendering index R9 (red), R15 (skin color) ⁇ 70.
  • FIG. 1 is a schematic configuration diagram of a light emitting device.
  • the light emitting device 1 includes a light emitting section 10 and a light emission control section 20 .
  • the light emitting unit 10 includes a rectangular container-shaped housing 11, a substrate 12 arranged on the inner bottom, LEDs 101 to 105 which are five types of light emitters arranged on the substrate 12, and these LEDs 101 to 105. and a drive circuit 13 of.
  • One surface of the housing 11 is open, and the opening is closed with a diffusion plate (not shown) that transmits and diffuses the light from the light emitters 101 to 105 .
  • FIG. 1 shows an example in which a round LED is mounted on the substrate 12, the shape of the LED is not limited to a round shape, and may be rectangular or bulb-shaped.
  • the light emission control unit 20 controls the operation of the light emitters 101 to 105 of the light emission unit 10, and includes a light emission control circuit 201, a storage unit 202, a setting unit 203, a wireless communication unit 204, and a clock circuit 205 as functional blocks. I have. It also has an input section 21 and a display section 22 .
  • the storage unit 202 stores a plurality of data sets each including a combination of values of illuminance, color temperature, and mRCG stimulation amount of the light emitted from the light emitting unit 10, and data of the light emitted by the light emitters 101 to 105 corresponding to each data set.
  • a data table is stored showing the relationship with the emission intensity.
  • the storage unit 202 stores a timetable showing the emission intensity of the light emitted by the light emitters 101 to 105 on each day of the year. These data table and time table will be described later.
  • the substance of the above light emission control unit 20 is a general computer, and the functions of the above functional blocks are realized by operating dedicated control software installed in the computer on the computer. Therefore, the input unit 21 includes pointing devices such as a keyboard and a mouse.
  • the light-emitting device 1 can input values of illuminance, color temperature, and mRGC through the input unit 21 , and these input values are set in the setting unit 203 .
  • the light emission control unit 20 also includes an external connection terminal 206 that is a wired communication network connection terminal such as a USB port, an Ethernet port, an RS-232C port, and the like.
  • the light emission control unit 20 can transmit and receive data to and from external devices such as a personal computer through the external connection terminal 206 .
  • the wireless communication unit 204 can communicate with a mobile terminal 30 such as a smartphone, and the user sets the color temperature and mRGC of the emitted light of the light emitting unit 10 in the setting unit 203 by operating the mobile terminal 30. can do.
  • the five types of LEDs 101 to 105 have different peak wavelengths, and are arranged on the substrate 12 in the order of LEDs 101, 102, 103, 104, and 105 in multiple rows. In FIG. 1, the five types of LEDs 101 to 105 are represented by different patterns.
  • FIG. 2 is a light characteristic diagram of the LEDs 101-105.
  • the LED 101 corresponds to the first light emitter of the present invention, and is a single-wavelength cyan LED having a peak wavelength of 505 nm and a half-value wavelength width of about ⁇ 10 nm (both-side half-value wavelength widths of 20 nm).
  • the LED 102 corresponds to the second light emitter of the present invention, and is a single-wavelength blue LED having a peak wavelength of 445 nm and a half-value wavelength width of about ⁇ 10 nm (both sides half-value wavelength width of 20 nm).
  • the LED 103 corresponds to the third light emitter of the present invention, and has a wavelength width characteristic of a peak wavelength of 455 nm to 460 nm and a half-value wavelength width of about +50 nm (the half-value wavelength width on the long wavelength side is 50 nm).
  • the LED 104 corresponds to the fourth luminous body of the present invention, and has wavelength width characteristics such as a peak wavelength of 540 nm and a half-value wavelength width of about +30 nm (the half-value wavelength width on the long wavelength side is 30 nm).
  • the LED 105 corresponds to the fifth luminous body of the present invention, and has wavelength width characteristics such that the peak wavelength is 640 nm and the half-value wavelength width is ⁇ 60 nm (the half-value wavelength width on the short wavelength side is 60 nm, and the half-value wavelength width on the long wavelength side is 60 nm). is an LED having Moreover, the LEDs 103 to 105 also correspond to the wide light emitters of the present invention. In this embodiment, each of the LEDs 103 to 105 is made to have the peak wavelength and wavelength width characteristics described above by applying a phosphor to the blue LED. In FIG. 2, the light spectra of the LEDs 101 to 105 are normalized so that the peak levels are the same. An appropriate value may be set according to the color temperature and the amount of mRCG stimulation.
  • the data table corresponds to a plurality of data sets consisting of combinations of values of the illuminance, color temperature, and mRCG stimulation amount of the light emitted from the light emitting unit 10, and the light emission intensity of the light emitted by the LEDs 101 to 105. It is what I let you do.
  • the light emission control circuit 201 includes a circuit that changes the light emission intensity of the first to fifth LEDs 101 to 105 by PWM control. For example, in the case of PWM control with 8-bit resolution, it is possible to control the emission intensity with a numerical value from 0 to 255. That is, when the numerical value is 0, the light is turned off, and when the numerical value is 255, the maximum emission intensity is obtained.
  • the spectral irradiance of the maximum emission intensity of each of the first to fifth LEDs 101 to 105 is measured with a spectral irradiance meter (Konica Minolta: CL -500A), and each light receiver (L, M, S-cone, mRGC , rods) are multiplied by the measured spectral irradiance and integrated over the wavelength range of 400 nm to 750 nm, and the amount of stimulus to mRGCs (Melanopic ELR).
  • FIG. 3 is a distribution diagram of each set of color temperature and mRGC stimulation amount included in the data table obtained as described above.
  • the vertical axis indicates the color temperature (K)
  • the horizontal axis indicates the mRGC stimulation level (Melanopic ELR, mW/lm).
  • one combination of the PWM output values (0 to 255) of the first to fifth LEDs 101 to 105 for realizing emitted light with a color temperature of, for example, 12000K is as shown in Table 1 below. I understand.
  • the color temperature and the mRGC stimulation amount that satisfy the conditions of general color rendering index (Ra) ⁇ 90, special color rendering index R9 (red), and R15 (skin color) ⁇ 90.
  • the sets include a plurality of sets with the same color temperature and different mRGC stimulation amounts, and a plurality of sets with the same mRGC stimulation amounts and different color temperatures.
  • the amount of mRGC stimulation for a color temperature of 3000K is 0.6-0.8mW/lm
  • the amount of mRGC stimulation for a color temperature of 5000K is 1.0-1.2mW/lm
  • the amount of mRGC stimulation for a color temperature of 12000K is 0.6-0.8mW/lm.
  • the mRGC stimulation amount can be varied between 1.5 and 1.8 mW/lm.
  • the color temperature can be changed between 4000 and 5000 K when the mRGC stimulation level is 1 mW/lm and between 7000 and 11000 K when the mRGC stimulation level is 1.5 mW/lm. .
  • Fig. 4 is a distribution map with circled numbers and arrows
  • the amount of mRGC stimulation is gradually decreased while maintaining the constant (2 ⁇ 3)
  • the color temperature is decreased while maintaining the mRGC stimulation constant (3-6)
  • the color temperature is changed from medium color temperature/medium mRGC stimulation amount to low color temperature/
  • a light-emitting device 1 capable of transitioning to a low mRGC stimulation amount (6-14) can be realized.
  • the color temperature is maintained while maintaining the general color rendering index (Ra) ⁇ 90, the special color rendering index R9 (red), R15 (skin color) ⁇ 90, and maintaining the illuminance constant. is gradually changed from 12000K to 3000K, the amount of mRGC stimulation at each color temperature can be controlled within a range of change of 0.2 to 0.3 mW/lm.
  • the time table is obtained by setting appropriate pairs of color temperature and mRGC stimulus amount for each time slot from the above data table.
  • Table 3 shows an example of a timetable.
  • the storage unit 202 stores color temperature and color temperature conditions other than the conditions of general color rendering index (Ra) ⁇ 90, special color rendering index R9 (red), and R15 (skin color) ⁇ 90 under certain illuminance conditions.
  • a data table that associates sets of mRGC stimulation amounts with sets of emission intensities of the first to fifth LEDs 101 to 105 may be stored.
  • FIG. 5 shows a distribution map of color temperature and mRGC stimulation amount satisfying the conditions of general color rendering index (Ra) ⁇ 70, special color rendering index R9 (red), R15 (skin color) ⁇ 70
  • FIG. shows a distribution map of color temperature and mRGC stimulation amount satisfying the conditions of illuminance 500lx, general color rendering index (Ra) ⁇ 80, special color rendering index R9 (red), R15 (skin color) ⁇ 80. .
  • Example 1 The light emission conditions of the light emitting device were changed in an artificial climate room in which the outside light was blocked, saliva was collected from 22 subjects (males in their twenties) over three days, and melatonin concentration was measured from the collected saliva. Luminescent conditions were measured using a spectral irradiometer CL-500A manufactured by Konica Minolta, and melatonin was analyzed using ELISA manufactured by BULMANN.
  • Fig. 7 shows the experiment schedule. Subjects enter the experimental room at 10:00 on the first day of the experiment and stay there for four days. After that, sleep in complete darkness from 24:00 to 7:00 in the morning, and from the second day onwards, under either the condition A shown in Table 4-1 or the condition B shown in Table 4-2 below. spent in
  • condition A the light environment was such that a constant illuminance was maintained from 7:00 to 24:00 in the morning, and the mRGC stimulation level was maintained at 1.2 mW/lm.
  • condition B a constant illuminance was maintained from 7:00 to 24:00, and the mRGC stimulation level was increased to 1.8 mW/lm at a color temperature of 20,000 K to 12,000 K only for 30 minutes from 7:00. Overnight, the mRGC stimulation dose was tapered down to 0.6 mW/lm.
  • FIG. 9 shows the difference between the average melatonin concentration from 18:00 to 19:00 and the average melatonin concentration from 23:00 to 24:00. This difference corresponds to the amount of change in melatonin secretion during the night.
  • condition B showed a phase advance in the melatonin secretion behavior from the evening to the night before bedtime, or (and) an increase in the total amount of melatonin secreted at night, than under condition A.
  • the phase advance of melatonin secretion behavior and the increase in the total amount of melatonin secreted at night lead to the smooth onset of sleep and the securing of deep sleep. It is considered to be
  • Experiment 2 In Experiment 2, in addition to the lighting conditions of Experiment 1, the experiment was conducted under the lighting conditions in which strong mRGC stimulation was added in the evening to reduce the influence of blue light emitted from the screens of mobile devices such as smartphones on falling asleep at night. did
  • Luminescent conditions were measured using a spectral irradiometer CL-500A manufactured by Konica Minolta, and melatonin was analyzed using ELISA manufactured by BULMANN.
  • Fig. 10 shows the experiment schedule.
  • the first and second days were spent under the condition A, the third day under the condition B, and the fourth day under the condition C.
  • the subjects lived in the laboratory except for emergencies, including meals, excretion, and showering. Saliva was collected hourly from 18:00 until 24:00.
  • Table 7 shows the details of the set emission conditions.
  • Table 8 shows the results of melatonin concentration in Experiment 2.
  • FIG. 11 is a graph showing changes in the total increase in melatonin secretion from 21:00 to 24:00.
  • the total amount of melatonin secreted until going to bed at night increased by about 12% under the condition B of the biorhythm-adjusting light environment compared to the condition A of the general living light environment.
  • An increase of approximately 28% was observed in condition C, in which a strong mRGC stimulation experience was added in the evening.
  • the light environment that provides strong stimulation to mRGCs in the evening is considered to bring about very desirable results, and in particular, the light environment of condition C is considered to bring about beneficial effects on human health.
  • FIG. 12 shows a modification of the light emitting device.
  • the light emitting device includes a rectangular plate-shaped light guide plate 401 and a pair of rod-shaped light emitting portions 10 arranged on the left and right sides of the light guide plate 401 . Note that illustration of the light emission control unit is omitted in FIG. In this configuration, the light emitted from the light emitter (not shown) included in the light emitting section 10 is diffused within the light guide plate 401 and can be emitted from the surface of the light guide plate 401 as uniform light.
  • the light-emitting units 10 of the light-emitting device may be arranged at three locations, ie, the upper portion and the left and right portions of the rectangular mirror 402 .
  • illustration of the light emission control unit is omitted.
  • the light emitted from the light emitting unit 10 has a color temperature of 12000 K, an illuminance of 500 lx or more, a general color rendering index (Ra) ⁇ 90, a special color rendering index of R9 (red), R15 (skin color) ⁇ 90, and mRGC.
  • a light environment with a stimulus level of 1.8 mW/lm (Melanopic ELR) or more can be realized in front of a mirror.
  • makeup can be applied in a light environment with high color rendering, so that the ease of applying makeup and the beauty of the finish are improved.
  • the average time spent applying makeup in front of a mirror is about 15 to 30 minutes.
  • the light-emitting device according to the present invention is suitable as a light-emitting device for use in hospital rooms and living rooms in medical facilities and nursing care facilities, but it can also be used as a light-emitting device for lighting indoors in offices, schools, ordinary homes, and the like. may Further, in the above embodiment, the case of adjusting the human biorhythm using the light emitting device has been described. , the biorhythm and behavior of insects, and the germination, growth, and photosynthesis of plants.
  • the wide light emitter is composed of three types of light emitters (LED103 to LED105), but the number of light emitters constituting the wide light emitter may be one, two, or four or more. It's okay. Also, each of the first light emitter and the second light emitter may be composed of two or more types of light emitters.
  • the light-emitting device is a first light emitter that emits light having a wavelength width characteristic that has a peak wavelength in a wavelength range of 480 nm to 510 nm and a half-value wavelength width on both sides of 20 nm or less;
  • a second light emitter that emits light having a wavelength width characteristic with a half-value wavelength width of 20 nm or less, and a peak wavelength of light emitted by the first light emitter and the second light emitter in a wavelength range of 450 nm to 700 nm.
  • a light-emitting unit including a wide light-emitting body that emits light having different peak wavelengths and having a wavelength width characteristic in which the half-value wavelength width on the long wavelength side is 30 nm or more; and a controller capable of independently controlling the emission intensity of the light emitted by the first light emitter, the second light emitter, and the wide light emitter.
  • the light-emitting device according to Section 2 is the light-emitting device according to Section 1,
  • the wide light emitter is a third light emitter that emits light having a wavelength width characteristic of having a peak wavelength in a wavelength range of 450 nm to 470 nm, a half-value wavelength width of 20 nm or less on the short wavelength side, and a half-value wavelength width of 50 nm or more on the long wavelength side;
  • a fourth light emitter that emits light having a wavelength width characteristic that has a peak wavelength in a wavelength range of 540 nm to 550 nm and has a half-value wavelength width of 30 nm or more on the short wavelength side and the long wavelength side
  • a fifth light emitter that emits light having a wavelength width characteristic of having a peak wavelength in a wavelength range of 620 nm to 650 nm, a half-value wavelength width of 30 nm or more on the short wavelength side, and a half-value wavelength width of 40 nm
  • the light-emitting device according to the third term is the light-emitting device according to the first or second term, wherein the control unit controls the color temperature of the light emitted from the light-emitting unit to be in the range of 2500K to 15000K. Second, the emission intensity of the light emitted by the light emitter is controlled.
  • the light-emitting device according to Section 4 is the light-emitting device according to any one of Sections 1 to 3, moreover, a setting unit for setting the color temperature and the amount of mRGC stimulation; Information indicating the relationship between the color temperature and mRCG stimulus amount of the light emitted from the light emitting unit and the emission intensity of the light emitted by each of the first light emitter, the second light emitter, and the wide light emitter is stored. a storage unit containing Based on the information, the control unit controls the emission intensity of each light emitter so that the color temperature and the amount of mRCG stimulation of the light emitted from the light emitting unit become the color temperature and the amount of mRCG stimulation set by the setting unit. to control.
  • the light-emitting device according to Section 5 is the light-emitting device according to Section 4, wherein the information stored in the storage unit includes a plurality of sets having the same color temperature and different mRGC stimulation amounts. It contains information in which the emission intensities of the light emitters are associated with each other.
  • the light-emitting device according to Section 6 is the light-emitting device according to Section 4 or 5, wherein the information stored in the storage unit includes a plurality of light-emitting devices having the same mRGC stimulation amount and different color temperatures.
  • the set includes information in which the emission intensities of the light emitters are associated with each other.
  • the operation method of the light emitting device according to Section 7 is 7.
  • a method for operating a light-emitting device according to any one of items 4 to 6, wherein light having a predetermined color temperature and mRGC stimulation amount is emitted in order to adjust the biological rhythm of the subject Based on the information stored in the storage unit, the control unit determines that the color temperature and the amount of mRGC stimulation of the light emitted from the light emitting unit during a period of 60 minutes to 120 minutes from the subject's wake-up time adjusting the light emission intensity of the light emitted by the first light emitter, the second light emitter, and the wide light emitter, respectively, so that the color temperature and the amount of mRGC stimulation of the light emitted from the light emitting unit in the time zone of In the time zone from the time 10 hours to 12 hours after the wake-up time to the subject's bedtime, the color temperature and the mRGC stimulation amount of the light emitted from the light emitting unit are the same as the light emission in
  • the method for operating the light-emitting device according to Section 8 is 7.
  • a method for operating a light-emitting device according to any one of items 4 to 6, wherein light having a predetermined color temperature and mRGC stimulation amount is emitted in order to adjust the biological rhythm of the subject Based on the information stored in the storage unit, the control unit determines that the color temperature and the amount of mRGC stimulation of the light emitted from the light emitting unit during a period of 60 minutes to 120 minutes from the subject's wake-up time adjusting the light emission intensity of the light emitted by the first light emitter, the second light emitter, and the wide light emitter, respectively, so that the color temperature and the amount of mRGC stimulation of the light emitted from the light emitting unit in the time zone of In a time period of 60 minutes to 120 minutes after 10 hours to 12 hours have passed since the wake-up time, the color temperature and mRGC stimulation amount of the light emitted from the light emitting unit are the same as those of the
  • the emission intensity of the light emitted from the first light emitter, the second light emitter, and the wide light emitter is adjusted so that the color temperature and the mRGC stimulation amount of the emitted light are higher than those of the first light emitter, the second light emitter, and the wide light emitter.
  • the operating method of the light emitting device according to Section 9 is A method for operating the light-emitting device according to any one of items 4 to 6, Based on the information stored in the storage unit, the control unit maintains the color temperature of the light emitted from the light emitting unit within a predetermined range, and controls the amount of mRGC stimulation of the emitted light to change. The emission intensity of the light emitted by each of the first light emitter, the second light emitter, and the wide light emitter is controlled.

Abstract

L'invention concerne un dispositif électroluminescent capable de créer un environnement lumineux dans lequel des rythmes biologiques peuvent être ajustés et de fournir des propriétés de rendu de couleur élevées à différentes températures de couleur. Un dispositif électroluminescent de la présente invention est caractérisé en ce qu'il comprend : un premier corps électroluminescent qui émet de la lumière ayant une longueur d'onde de pic dans une plage de longueurs d'onde de 480 à 510 nm et ayant une caractéristique de largeur de longueur d'onde qui a une demi-valeur de largeur de longueur d'onde sur les deux côtés qui vaut 20 nm ou moins, un second corps électroluminescent qui émet de la lumière ayant une longueur d'onde de pic dans une plage de longueurs d'onde de 440 à 480 nm et ayant une caractéristique de largeur de longueur d'onde qui a une demi-valeur de largeur de longueur d'onde sur les deux côtés qui vaut 20 nm ou moins, et un corps électroluminescent à large plage de longueurs d'onde qui émet de la lumière ayant une longueur d'onde de pic différente des longueurs d'onde de pic de la lumière émise par le premier corps électroluminescent et le second corps électroluminescent dans une plage de longueurs d'onde de 450 à 700 nm et ayant une caractéristique de largeur de longueur d'onde qui a une demi-valeur de largeur de longueur d'onde sur les deux côtés qui vaut 30 nm ou plus ; et un dispositif de commande capable de commander indépendamment l'intensité d'émission de la lumière émise par le premier corps électroluminescent, le second corps électroluminescent et le corps électroluminescent à large plage de longueurs d'onde.
PCT/JP2022/031596 2021-12-16 2022-08-22 Dispositif électroluminescent WO2023112392A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021204652 2021-12-16
JP2021-204652 2021-12-16

Publications (1)

Publication Number Publication Date
WO2023112392A1 true WO2023112392A1 (fr) 2023-06-22

Family

ID=86774197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/031596 WO2023112392A1 (fr) 2021-12-16 2022-08-22 Dispositif électroluminescent

Country Status (1)

Country Link
WO (1) WO2023112392A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018130403A1 (fr) * 2017-01-12 2018-07-19 Philips Lighting Holding B.V. Système d'éclairage qui maintient la dose mélanopique pendant une gradation ou un réglage de couleur

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018130403A1 (fr) * 2017-01-12 2018-07-19 Philips Lighting Holding B.V. Système d'éclairage qui maintient la dose mélanopique pendant une gradation ou un réglage de couleur

Similar Documents

Publication Publication Date Title
US11577091B2 (en) Lighting system for protecting circadian neuroendocrine function
US9635732B2 (en) Dynamic lighting system with a daily rhythm
US11808443B2 (en) Lighting device, lighting system and use thereof
TWI814977B (zh) 生物調光照明系統
US20210290973A1 (en) Circadian optimized polychromatic light
Ellis et al. Auto-tuning daylight with LEDs: Sustainable lighting for health and wellbeing
JP2009259639A (ja) 照明装置
JP7152690B2 (ja) 照明制御システム、及び、照明灯具。
Brawley Enriching lighting design
WO2020097580A1 (fr) Systèmes de panneau d'éclairage bioactif
CN108302335B (zh) 一种照明装置及包括该照明装置的灯具
Chen A theoretical approach for therapeutic artificial supplementary lighting in elderly living spaces
US9900956B2 (en) Multi-function lighting system
JP2024026873A (ja) 照明灯具。
WO2023112392A1 (fr) Dispositif électroluminescent
Noell-Waggoner Light: An essential intervention for Alzheimer's disease
Madias et al. Design and Development of a Sustainable Environmentally Friendly and Human Centric Luminaire
Liu Lighting evaluation and design for the stockholm metro system based on current models for non-visual responses
Perdahci et al. The Contribution of Neuroscience to Biodynamic Lighting System
WO2023125740A1 (fr) Dispositifs d'éclairage, systèmes d'éclairage, procédés et composants
Maganty Adaptive circadian rhythm a cognitive approach through dynamic light management
Davis et al. GATEWAY Demonstrations: Tuning the Light in Senior Care: Evaluating a Trial LED Lighting System at the ACC Care Center in Sacramento, CA
Davis et al. Tuning the light in senior care: Evaluating a trial LED lighting system at the ACC Care Center in Sacramento, CA
Madias et al. Methodology for the optimization of artificial lighting considering both visual and non-visual effects
Tawfik et al. Natural lighting as a factor in providing a healthy environment in buildings

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22906928

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023567537

Country of ref document: JP