JP2009266484A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device that applies light stimulation to an applied person to effectively accelerate arousal of the applied person regardless of open or close condition of eyes of the applied person. <P>SOLUTION: In a lighting device comprising a plurality of light sources, the plurality of light sources include a first light source 11 emitting light having a spectroscopic component in a first wavelength band of 580 nm or higher, and a second light source 12 emitting light having a spectroscopic component in a second wavelength band of ≤580 nm. An optical transmittance of an eyelid is low in a wavelength band of ≤580 nm but high in a wavelength band of 580 nm or higher, so that the first light source 11, emitting light in a wavelength band in which the eyelid has a high optical transmittance is turned ON when an applied person is in an eye-close condition, and the second light source 12, emitting light in a wavelength band in which secretion inhibitory effect of melatonin is greater is turned ON when an eyelid-open condition, for example, thereby making it possible to apply light stimulation to the applied person to effectively accelerate arousal of the applied person regardless of open or close condition of eyes of the applied person. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an illuminating device that can effectively awaken a person by controlling the amount of light in each of a plurality of wavelength ranges.

  It is known that the secretion of melatonin, a hormone secreted from the pineal gland of the brain, greatly contributes to the rhythm of sleep and awakening, which is a typical human rhythm. Melatonin is generally secreted in large quantities from about 2 hours before going to bed at night to the first half of sleep, and it is thought that this secretion promotes a decrease in body temperature and sleep. It is known that the secretion of melatonin is suppressed by applying a light stimulus to a photoreceptor on a human retina. For example, it is reported in Non-Patent Document 1 (see FIG. 29). FIG. 29 is a diagram showing wavelength characteristics of suppression of melatonin secretion by nighttime light reception. In FIG. 29, the horizontal axis indicates the wavelength (nm), and the vertical axis indicates the relative sensitivity of the suppression of melatonin secretion. As shown in the figure, light in the wavelength region near 464 nm controls the suppression of melatonin secretion. You can see that

  In recent years, as an illuminating device used for indoor lighting in houses, offices, hospitals, etc., it has not only the ability to illuminate the surroundings brightly, but also the function of adjusting the biological rhythm in consideration of the effect of such light on the biological rhythm Various lighting devices configured to emit light in the wavelength region near 464 nm have been proposed (see, for example, Patent Document 1).

The lighting device disclosed in Patent Document 1 is capable of irradiating light having a correlated color temperature of 6000 K or higher and an average illuminance on the floor of 2000 lux or higher in order to suppress the secretion of melatonin. It is configured. Thus, by irradiating the irradiated person after waking up with high-illumination illumination light containing a high correlation color temperature, in other words, a large amount of spectral components in the wavelength region near 464 nm, the effect of suppressing the secretion of melatonin can be increased. Yes, the arousal level can be quickly changed to a stable state in the daytime.
JP-A-6-314595 George C. Brainard, et al. : “Action Spectrum for Melatonin Regulation in Humans: Evidence for a Novel Circadian Photoreceptor”, The Journal of Neuroscience, 16 (August 15). 6405-6412. J. et al. Robinson, et al. “Transmission of light cross the adult and neonatal eye in vivo”, Vision Research, 1991, Vol. 31, Issue 10, p. 1837-40.

  By the way, the light transmittance of the human eyelid varies depending on the wavelength of light, and is reported in, for example, a paper of Non-Patent Document 2 (see FIG. 30). FIG. 30 is a diagram showing the wavelength characteristics of the light transmittance of the eyelids. The horizontal axis in FIG. 30 indicates the wavelength (nm), the vertical axis indicates the light transmittance (%) of the pupa, the black rhombus in the figure indicates the light transmittance of the newborn pupa, and the open square indicates the adult's light transmittance. The light transmittance of the moth is shown respectively. It can be seen from FIG. 30 that light in the wavelength range of 580 nm or less hardly transmits the soot.

  Even when using light in the wavelength region near 464 nm, which has a high effect of suppressing the secretion of melatonin as in the illumination device of Patent Document 1, when the irradiated person is in an eye-closed state, as shown in FIG. Since the rate is low, the amount of light transmitted through the eyelid is so small that almost no light stimulation can be given to the photoreceptors on the retina of the irradiated person, so that there has been a problem that the effect of suppressing the secretion of melatonin cannot be obtained sufficiently.

  The present invention has been made in view of such circumstances, and effectively irritates the irradiated person by applying a light stimulus to the irradiated person regardless of the open / closed state of the irradiated person's eyes. An object of the present invention is to provide a lighting device that can perform the above-described operation.

  The illuminating device according to the present invention is an illuminating device including a plurality of light sources, wherein the plurality of light sources emits light having a spectral component in a first wavelength region that is a wavelength region of 580 nm or more, and 580 nm. And a second light source that emits light having a spectral component in the second wavelength range which is the following wavelength range.

  In this invention, it has the 1st light source which emits the light which has a spectral component of the 1st wavelength range which is a wavelength range of 580 nm or more, and the spectral component of the 2nd wavelength range which is a wavelength range of 580 nm or less A light source that emits light, and the light transmittance of the eyelid is low in the wavelength range of 580 nm or less and high in the wavelength range of 580 nm or more. For example, when the subject is in an eye-closed state, By turning on a first light source that emits light in a wavelength region with a high light transmittance, and turning on a second light source that emits light in a wavelength region that is highly effective in suppressing secretion of melatonin when in the open eye state, Irrespective of the open / closed state of the irradiated person's eyes, it is possible to effectively stimulate the irradiated person's awakening by applying a light stimulus to the irradiated person.

  The illumination device according to the present invention provides light having a spectral component in a first wavelength range that gives light stimulation by irradiating when the eyes are closed and promotes eye opening, and applies light stimulation by irradiating when the eyes are opened to promote arousal. A light source that emits light having a spectral component in two wavelength ranges, and selecting and illuminating at least one of the light in the two wavelength ranges, regardless of the open / closed state of the subject's eyes It is characterized in that light stimulation is imparted to the body to promote awakening.

  In the present invention, the light having the spectral component in the first wavelength range that imparts a light stimulus by irradiating when the eye is closed and promotes eye opening, and the second that imparts the light stimulus and wakes up by irradiating at the time of eye opening. Using a light source that emits light having a spectral component in the wavelength range, at least one of the light in the two wavelength ranges of the light source is selected and illuminated, depending on the open / closed state of the eye of the subject By appropriately selecting the light in the two wavelength ranges, when the irradiated person is in an eye-closed state, a light stimulus having a high light transmittance of the eyelid is given to the irradiated person to promote the opened eye of the irradiated person, It is possible to awaken the irradiated person sufficiently by giving the irradiated person a light stimulus that is highly effective in suppressing the secretion of melatonin when in the open eye state, and it is possible to effectively promote the awakening of the irradiated person Become.

  The illumination device according to the present invention is characterized in that the first wavelength band is a wavelength band near 700 nm.

  In the present invention, the first wavelength region is a wavelength region near 700 nm, and the light transmittance of the eyelid is high in the wavelength region. Therefore, the first wavelength region is the first when the subject is in an eye-closed state. By illuminating the light source so as to include a large amount of spectral components in the wavelength region, sufficient light stimulation can be given to the irradiated person, and the awakening of the irradiated person can be effectively promoted.

  In the illumination device according to the present invention, the first wavelength range is a wavelength range of 580 to 630 nm.

  In the present invention, the first wavelength range is set to a wavelength range of 580 to 630 nm, and the spectral luminous efficiency considering the light transmittance of the eyelid is increased in the wavelength range. By illuminating the light source so that it contains a large amount of spectral components in the first wavelength range, it is possible to give sufficient light stimulation to the irradiated person and effectively promote the awakening of the irradiated person Is possible.

  The illumination device according to the present invention is characterized in that the second wavelength region is a wavelength region near 464 nm.

  In the present invention, the second wavelength region is a wavelength region near 464 nm, and the effect of suppressing the secretion of melatonin is high in the wavelength region. Therefore, when the irradiated person is in the open eye state, By illuminating the light source so as to include a lot of spectral components in the wavelength region 2, it is possible to effectively promote the awakening of the irradiated person.

  The illuminating device according to the present invention includes a control unit that controls the amount of light in each of the first and second wavelength ranges, and the control unit is irradiated with light in the first and / or second wavelength range. The amount of light in the first and / or second wavelength region is controlled in accordance with the open / closed state of the eye of the irradiated person.

  In the present invention, the amount of light in the first and / or second wavelength region is controlled according to the open / closed state of the eye of the irradiated person. For example, when the irradiated person is in the closed eye state, The light source is turned on so as to include a large amount of spectral components in the first wavelength range, and the light source is turned on so as to include a large amount of spectral components in the second wavelength range when the irradiated subject is in the open eye state. When the eye is in an eye-closed state, the subject is given a light stimulus with a high light transmittance of the eyelid to promote the eye-opening of the subject, and when the eye is in the eye-open state, the light stimulus is highly effective in suppressing melatonin secretion. It is possible to sufficiently awaken the irradiated person by giving it to the irradiated person, and it is possible to effectively promote the awakening of the irradiated person.

  The illumination device according to the present invention includes detection means for detecting an open / closed state of the eye of the irradiated person, and the control means is configured to detect the second / first eye according to the open / closed state detected by the detection means. The light quantity in the wavelength region is increased.

  In the present invention, the open / closed state of the eye of the irradiated person is detected, and based on the detection result, the amount of light in the first wavelength region is increased when the eye is closed, and the second when the eye is open. The amount of light in the wavelength range is increased, and when the irradiated person is in an eye-closed state, a light stimulus having a high light transmittance of the eyelid is given to the irradiated person to promote the eye-opening of the irradiated person and the eye is in an opened state. Occasionally, a light stimulus that is highly effective in suppressing the secretion of melatonin can be applied to the irradiated person to sufficiently awaken the irradiated person, and the irradiated person can be effectively awakened.

  The illumination device according to the present invention is characterized in that the control means increases the amount of light in the first wavelength region when the closed state of at least one irradiated person is detected by the detection means. And

  In the present invention, when the closed eye state of at least one person to be irradiated is detected, the light amount in the first wavelength range is increased, and when one of the plurality is in the closed eye state, the eyelid light is transmitted. A high-stimulation light stimulus can be applied to an irradiated person in a closed eye state to promote the opening of the irradiated person.

  The illuminating device according to the present invention comprises control means for controlling the amount of light in each of the first and second wavelength ranges, and clock means for outputting an alarm signal notifying the arrival of a set time, the control means Is characterized in that the light quantity in the first and / or second wavelength region is controlled based on time information and an alarm signal by the clock means.

  In the present invention, the amount of light in each of the first and second wavelength ranges is controlled based on time information and an alarm signal by the clock means. For example, the light source includes a spectral component in the first wavelength range. After the light source is turned on, the light source is turned on so as to include the spectral component in the second wavelength range, so that the light stimulus with high light transmittance of the sputum is first given to the irradiated person, and then the secretion of melatonin is suppressed. Since a highly effective light stimulus will be given to the irradiated person, after stimulating the eye opening of the irradiated person with a strong light stimulus, a light stimulus that is highly effective in suppressing the secretion of melatonin is given to the irradiated person. It is possible to sufficiently awaken and to effectively awaken the irradiated person.

  In the illuminating device according to the present invention, the control means is a spectral component of at least the first and second wavelength ranges according to a first time zone and a second time zone determined based on an alarm signal from the clock means. The light source is turned on so as to include

  In the present invention, the first time zone and the second time zone are determined based on the alarm signal from the clock means, the spectral component in the first wavelength range is set in the first time zone, and the first time zone is set in the second time zone. The light source is turned on so as to include at least a spectral component in the wavelength range of 2, and after first applying light stimulation with high light transmittance of sputum to the irradiated person, light stimulation with high melatonin secretion suppression effect is applied. Since it is given to the irradiated person, the irradiated person can be sufficiently awakened after the opened eye state, and the awakened person can be effectively awakened.

  The illuminating device according to the present invention includes stimulation signal generation means for generating a stimulation signal so as to arbitrarily change the light amount in the first and / or second wavelength band, and the control means includes the stimulation signal generation means. The amount of light in the first and / or second wavelength range is controlled in accordance with the stimulus signal from the above.

  In the present invention, the stimulation signal is generated by the stimulation signal generating means, and the light quantity in the first and / or second wavelength range is arbitrarily changed according to the stimulation signal, and the first and / or first Since the amount of light in the wavelength region 2 changes randomly, the irradiated person's eyes are not used to the light stimulation, and the irradiated person can be effectively awakened.

  The illumination device according to the present invention is characterized in that the control means causes the stimulus signal generating means to generate a stimulus signal when an eye-closed state is detected by the detection means.

  In the present invention, when a closed eye state is detected, a stimulus signal is generated, and a light stimulus having a high light transmittance that randomly changes is given to the irradiated person. The person's eyes do not get used to the light stimulation, and the awakening of the irradiated person can be promoted effectively.

  The illumination device according to the present invention is characterized in that the control means causes the stimulation signal generation means to generate a stimulation signal based on an alarm signal from the clock means.

  In the present invention, the stimulus signal is generated based on the alarm signal, and the amount of light in the first and / or second wavelength range changes randomly, so that the eye of the irradiated person is subjected to the light stimulus. Without getting used to it, it is possible to effectively promote the awakening of the irradiated person.

  The illumination device according to the present invention is characterized in that the stimulation signal generated by the stimulation signal generating means is a 1 / f fluctuation signal.

  In the present invention, since the amount of light in the first and / or second wavelength range changes according to the 1 / f fluctuation signal, a comfortable feeling can be given to the irradiated person.

  The illumination device according to the present invention is characterized in that the control means controls the amount of light in the first wavelength region in accordance with a 1 / f fluctuation signal.

  In the present invention, the amount of light in the first wavelength range is changed in accordance with the 1 / f fluctuation signal. Therefore, when the total amount of light is set to be substantially constant, only the irradiated subject in the closed eye state. When the light quantity in the second wavelength region is made substantially constant, it is possible to give a comfortable feeling to the irradiated person in both the open eye state and the closed eye state.

  The illumination device according to the present invention is characterized in that the control means controls the light amounts in the first and second wavelength regions so that the total light amount becomes substantially constant.

  In the present invention, the amount of light in the first and second wavelength ranges is controlled so that the total amount of light is substantially constant, and the light applied to the photoreceptor on the retina of the irradiated subject in the open eye state Since the amount of stimulation is always substantially constant, it is not necessary to give a sense of incongruity to the irradiated subject in the open eye state.

  In the illumination device according to the present invention, the stimulation signal generating means generates a stimulation signal of a 1 / f fluctuation signal and a white noise signal, and the control means converts the 1 / f fluctuation signal and the white noise signal. Accordingly, the light amounts in the second and first wavelength ranges are controlled respectively.

  In the present invention, the amount of light in the first wavelength range is changed according to the white noise signal, and the amount of light in the second wavelength range is changed according to the 1 / f fluctuation signal. A light stimulus having a high light transmittance that changes according to the white noise signal is given to the irradiated person, and a light stimulus that is highly effective in suppressing the secretion of melatonin that changes according to the 1 / f fluctuation signal is given to the irradiated person with the eye open. Therefore, an unpleasant light stimulus is given to the irradiated person in the closed eye state, and a comfortable light stimulus is given to the irradiated person in the opened eye state, and the awakening of the irradiated person can be further effectively promoted.

  ADVANTAGE OF THE INVENTION According to this invention, regardless of the open / closed state of a to-be-irradiated person's eye, an arousal of a to-be-irradiated person can be effectively promoted by giving a light stimulus to a to-be-irradiated person.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
(Embodiment 1)
FIG. 1 is a schematic diagram showing a configuration of lighting apparatus 10 according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram showing a schematic configuration of lighting apparatus 10 according to the present embodiment.

  In the figure, reference numeral 1 denotes a light source unit. The light source unit 1 includes a first light source 11 that emits light having a spectral component in a first wavelength region and an eye-opened state in order to give a light stimulus to an irradiated subject in an eye-closed state. A second light source 12 that emits light having a spectral component in a second wavelength range different from the first wavelength range, and a first light source 11 and a second light source 12 to give a light stimulus to the person to be irradiated. And a plate-like support member 13 for supporting the. The first light source 11 and the second light source 12 include, for example, an LED element, a sealing resin in which the LED element is sealed and phosphor is dispersed, and an input terminal and an output terminal. This is a surface mount type LED.

  First, the concept of selecting the first light source 11 and the second light source 12 will be described. The light transmittance of the eyelid has the wavelength characteristic shown in FIG. 30 described in Non-Patent Document 2 described above. For example, the light transmittance of adult wrinkles is about 3% or less in the wavelength region of 580 nm or less, while it monotonically increases in proportion to the wavelength in the wavelength region of 580 nm or more, and 14.5% at the wavelength of 700 nm. The result is obtained.

  As can be seen from this figure, since the wavelength range where the light transmittance of the human eyelid is low is 580 nm or less, the wavelength range of 580 nm or less is used as the first light source 11 that gives a light stimulus to the irradiated subject in the closed eye state. The first wavelength region (shown by (1) in FIG. 30) that is a wavelength region of 580 nm or more that does not contain as much spectral components as possible in the second wavelength region (the wavelength region indicated by (2) in FIG. 30). It is preferable to use a light source that emits light containing a large amount of spectral components in the wavelength range. In addition, a light source that emits light including a large amount of spectral components in the wavelength range near 700 nm (for example, 650 to 750 nm) is used as the first light source 11 because it monotonically increases in proportion to the wavelength in the wavelength range of 580 nm or more. It is more desirable to use.

  Examples of light sources that can be suitably used for the first light source 11 are shown in FIGS. 3 and 4 are diagrams showing the emission spectrum of the LED, with the horizontal axis indicating the wavelength (nm) and the vertical axis indicating the relative intensity. The light source shown in FIG. 3 is an LED that emits light having a peak wavelength of 700 nm, and emits light including only a spectral component having a wavelength of 580 nm or more. The light source shown in FIG. 4 is a white LED including a 405 nm purple light source and a three-wavelength fluorescent material, and emits light having a peak wavelength of around 660 nm.

  By the way, on the human retina, as photoreceptors, the rod cells (R) that perceive light and darkness with dark vision (about 0.01 lux or less) and the color with light vision (about 10 lux or more) are perceived. There are three types of cone cells (S cone, M cone, and L cone). In the thin vision of 0.01 to 10 lux, both rod cells and cone cells function, and the lower limit of the illuminance at which cone cells function is about 0.01 lux. The upper limit of the working illuminance is about 10 lux. It is known that the spectral sensitivity obtained for each wavelength of light, which is a sensitivity that is felt bright when the light is viewed, depends on the wavelength of the light.

  FIG. 5 is a diagram illustrating the spectral luminous efficiency of photopic vision and scotopic vision. The horizontal axis in FIG. 5 indicates the wavelength (nm), the vertical axis indicates the spectral luminous efficiency, the white circle in the figure indicates the spectral luminous efficiency V (λ) in photopic vision, and the black circle in the dark place. The spectral luminous efficiency V ′ (λ) in viewing is shown respectively. The higher the spectral luminous efficiency, the higher the sensitivity at that wavelength. The spectral luminous efficiency is a value obtained by dividing the spectral luminous sensitivity by the maximum luminous sensitivity, and the maximum value is standardized to 1.0. FIG. 5 shows values determined by the International Commission on Illumination (CIE) based on the measured values.

  The spectral luminous efficiency in the closed eye state in consideration of the light transmittance of the eyelid by multiplying such spectral luminous efficiency by the light transmittance of the eyelid described above will be considered. FIG. 6 is a diagram showing the spectral luminous efficiency in consideration of the light transmittance of the eyelids. In FIG. 6, the horizontal axis indicates the wavelength (nm), and the vertical axis indicates the spectral luminous efficiency × light transmittance. FIG. 6 shows the light transmittance of the adult moth shown in FIG. 30 to the spectral luminous efficiency V (λ) in photopic vision and the spectral luminous efficiency V ′ (λ) in dark vision shown in FIG. The multiplication results are indicated by white triangles and black triangles, respectively.

  Since the first light source 11 needs to give a strong light stimulus to the photoreceptor on the retina of the irradiated subject in the closed eye state, in the light stimulus to the rod cell whose upper limit of illuminance is as low as about 10 lux. The first light source 11 is selected by paying attention to the light stimulus to the pyramidal cell whose lower limit of illuminance is about 0.01 lux, that is, the spectral luminous efficiency V (λ) in photopic vision. As shown in FIG. 6, the light transmittance of the spectral luminous efficiency V (λ) × 瞼 in photopic vision is a maximum value at a wavelength of about 610 nm, and the light stimulation to the irradiated subject in the closed eye state As the first light source 11 that gives light, a light source that emits light containing a large amount of spectral components in the wavelength range of 580 to 630 nm is preferable.

  An example of a light source that can be suitably used for the first light source 11 is shown in FIG. FIG. 7 is a diagram showing emission spectra of seven types of LEDs, with the horizontal axis indicating wavelength (nm) and the vertical axis indicating relative intensity. The LEDs whose emission colors are amber and red orange are light sources that emit light containing a large amount of spectral components in the wavelength range of 580 to 630 nm, and can be used as the first light source 11.

  As described above, the first light source 11 is a light source that emits light that includes a large amount of spectral components in the wavelength range near 700 nm, or a light source that emits light that includes a large amount of spectral components in the wavelength range of 580 to 630 nm. Is desirable. By using such a light source as the first light source 11, the light from the light source can pass through the eyelid of the irradiated subject in the closed eye state to give a light stimulus to the photoreceptor on the retina. The eye of the irradiated person can be awakened by promoting the opening of the eyes.

  On the other hand, as described above, as the second light source 12 that gives a light stimulus to the irradiated subject in the open eye, light having a spectral component in a second wavelength range different from the first wavelength range, that is, a wavelength range of 580 nm or less, is used. A light source that emits light is preferable, and a light source that emits light having a spectral component in a wavelength region that has a high effect of suppressing the secretion of melatonin is more desirable from the viewpoint of effectively giving a light stimulus to an irradiated subject in an open eye state. As shown in FIG. 29 described in Non-Patent Document 1 described above, the wavelength characteristic of melatonin secretion suppression is such that the relative sensitivity of melatonin secretion suppression is maximized at a wavelength of 464 nm. As the second light source 12 that gives the light stimulus, a light source that includes a large amount of spectral components in the wavelength region near 464 nm (for example, 430 to 490 nm) is preferable.

  An example of a light source that can be used for the second light source 12 is shown in FIG. FIG. 8 is a diagram showing an emission spectrum of the LED, where the horizontal axis represents wavelength (nm) and the vertical axis represents relative intensity. The light source shown in FIG. 8 is a pseudo-white LED comprising a blue LED and a fluorescent material, hardly contains spectral components in the wavelength region of 638 nm or more, and emits light having a peak wavelength of around 463 nm. It can be suitably used as the second light source 12. Among the seven types of LEDs shown in FIG. 7 described above, LEDs whose emission colors are royal blue, blue, cyan, and green are light sources that contain a lot of spectral components in the wavelength range of 580 nm or less. Can be used. In particular, the blue and royal blue LEDs are light sources that contain a large amount of spectral components in the wavelength region near 464 nm where the relative sensitivity of melatonin secretion suppression is maximized, and should be suitably used as the second light source 12. Can do.

  As described above, the second light source 12 is desirably a light source that emits light containing a large amount of spectral components in the wavelength region near 464 nm. By using such a light source as the second light source 12, the light from the light source can effectively suppress the secretion of melatonin by applying a light stimulus to the photoreceptor on the retina of the irradiated subject in the open eye. It is possible to wake up the irradiated person promptly.

  The light source unit 1 including the first light source 11 and the second light source 12 selected from the above viewpoints is opposed to the first light source 11 and the second light source 12 at an appropriate distance as shown in FIG. The light mixing section 2 is attached to the support member 13 so as to cover the first light source 11 and the second light source 12. The light mixing part 2 is preferably made of a material having a high light transmittance over a wavelength range of 380 to 780 nm and capable of diffusing light from the light source part 1 into uniform light. It is made of milky white resin to which a diffusing agent is added, made of transparent resin with fine irregularities, or made of frosted glass.

  The light source unit 1 is turned on by the light source control unit 3. A signal receiver 4 is connected to the light source controller 3, and an input signal from the input device 5 is given to the signal receiver 4 wirelessly or by wire. The input device 5 includes, for example, a power switch that accepts an operation to turn on / off the illumination device, a detector operation switch that accepts an operation to turn on / off a detector that detects the eye open / closed state of the irradiated person, and the eye open state And an infrared remote controller comprising: a photostimulation selection switch that accepts a selection operation of the type of photostimulation to an irradiated subject in the closed eye state; and a signal transmission unit 5a that transmits an infrared signal according to the operation of these switches It is. The signal receiving unit 4 receives a signal from the signal transmitting unit 5 a and gives the received signal to the light source control unit 3. The input device 5 performs operations such as an operation of changing the amount of increase in the light amount of the first light source 11 when the irradiated person is in an eye-closed state, an operation of changing the light color and / or the light amount of the light source unit 1. You may comprise so that it may receive.

  The light source control unit 3 is connected to a detector 6 that detects the open / closed state of the irradiated person's eyes, and the detector 6 receives the eye of the irradiated person according to an operation command signal from the light source control unit 3. The open / closed state of the subject is detected, and the detected open / closed state of the eye of the irradiated person is given to the light source controller 3. The detector 6 includes an imaging unit 61 that captures an irradiated person, an imaging control unit 62 that controls the imaging unit 61, and an image signal analysis unit 63 that analyzes an image captured by the imaging unit 61. . When the input signal from the detector operation switch of the input device 5 given to the signal receiving unit 4 is an ON signal, the light source control unit 3 gives an imaging start operation command signal to the imaging control unit 62. The imaging control unit 62 operates the imaging unit 61 according to the given operation command signal.

  The imaging unit 61 is installed at a position where at least the face portion of the irradiated person can be photographed, and includes an optical member such as a lens and an imaging element such as a CCD or CMOS. In the illuminating device according to the present invention, there is a high need to detect the eye open / closed state of the irradiated person in a dark environment, and the light used for acquiring image information by the imaging unit 61 is, for example, 800 to It is preferably near infrared light in a wavelength region of 2500 nm. In order to make image acquisition by the imaging unit 61 more reliable, the imaging unit 61 includes a light emitting unit that emits near-infrared light at a position within the imaging unit 61 where irradiation can be performed. More preferably, it is provided.

  The imaging unit 61 provides the imaging control unit 62 with image information including the face portion of the irradiated person acquired by the imaging element. The imaging control unit 62 determines whether, for example, focus, exposure, and the like are appropriate based on the given image information, and gives a signal for focus adjustment and exposure adjustment to the imaging unit 61 according to the determined result. The imaging unit 61 performs focus adjustment, exposure adjustment, and the like according to a given signal. When it is determined that the focus, exposure, and the like are appropriate, the imaging control unit 62 gives the obtained image information to the image signal analysis unit 63.

  Based on the image information given by the imaging control unit 62, the image signal analysis unit 63 extracts the features of the eye of the irradiated person by performing edge processing or the like on the face image, and if necessary, the irradiated person After analyzing the number of persons and / or face orientation, etc., the distance between the upper and lower eyelids of the irradiated person, the area of the pupil of the eye, or the area ratio of the eyes (= the upper half area of the eye / the eye area) The degree of eye opening is obtained from the total area). When obtaining the degree of eye opening, it is more preferable to obtain the degree of eye opening by performing averaging of information using moving image information including time change in image information in order to reduce an error caused by a blinking operation. The image signal analysis unit 63 determines whether the irradiated person is in an open state or in a closed state using the obtained degree of eye opening, modulates the determined result as necessary, and then wirelessly transmits it as a sensor signal. Alternatively, it is given to the light source controller 3 by wire.

  In addition, a light quantity information storage unit 7 is connected to the light source control unit 3. In the light amount information storage unit 7, the first light source 11 that is changed according to the initial setting value of the light amount information of each of the first light source 11 and the second light source 12 and the sensor signal given by the image signal analysis unit 63. And the increase / decrease amount of the light quantity of each of the second light sources 12 is stored. When the input signal from the power switch of the input device 5 is a lighting signal, the light source control unit 3 receives initial setting values of the light amount information of the first light source 11 and the second light source 12 from the light amount information storage unit 7. Read.

  The light source control unit 3 includes a first light source 11 and a second light source 12 read by the light amount information storage unit 7 based on the input signal given by the input device 5 and the sensor signal given by the image signal analysis unit 63. The initial setting value of each light quantity information is corrected. The light source control unit 3 generates a light source dimming signal based on the initial setting value or the set value of the corrected light amount information, and the first light source 11 and the second light source 11 are generated according to the generated light source dimming signal. Each of the light sources 12 is driven and controlled. The first light source 11 and the second light source 12 emit light at a luminance corresponding to the light source dimming signal. The light source dimming signal is a current signal according to the current-luminance characteristics of the LED used as the light source, and is, for example, an analog current signal, a pulse width modulation signal, or the like.

  FIG. 9 is an example of a flowchart showing a processing procedure of lighting control of lighting apparatus 10 according to the present embodiment. The light source control unit 3 acquires an input signal from the input device 5 (step S1), and determines whether or not a lighting command is being issued based on the input signal acquired in step S1 (step S2). Whether or not a lighting command is being issued is determined based on whether the most recent input signal supplied from the power switch of the input device 5 to the signal receiving unit 4 is a lighting signal or a light-off signal when the power is turned on. Is done.

  If it is determined in step S2 that the lighting command is being issued (step S2: YES), the initial setting values of the light amount information of the first light source 11 and the second light source 12 are read from the light amount information storage unit 7 ( Step S3).

  On the other hand, when it is determined in step S2 that the lighting command is not being issued (step S2: NO), the first light source 11 and the second light source 12 are turned off (step S4), and the sequence returns to step S1 to repeat a series of operations. .

  Based on the input signal from the input device 5 acquired in step S1, it is determined whether or not the detector 6 is on (step S5). Whether or not the detector 6 is on is determined depending on whether the input signal supplied from the detector operation switch of the input device 5 to the signal receiving unit 4 is an on signal or an off signal. If it is determined in step S5 that the detector 6 is on (step S5: YES), an image of the irradiated person is acquired (step S6), and the degree of eye opening is detected based on the acquired image (step S6). Step S7). On the other hand, when it is determined in step S5 that the detector 6 is off (step S5: NO), the process proceeds to step S10.

  Next, based on the degree of eye opening detected in step S7, it is determined whether or not the irradiated person is in an eye-closed state (step S8). When there are a plurality of irradiated persons, it is determined that the irradiated person is in the closed state when at least one irradiated person is in the closed state.

  If it is determined in step S8 that the eye is closed (step S8: YES), the initial setting values of the light amount information of the first light source 11 and the second light source 12 acquired in step S3 are corrected (step S8). S9). The correction of the initial setting value of the light amount information of each of the first light source 11 and the second light source 12 is performed in advance according to the sensor signal given by the image signal analysis unit 63. This is performed by adding the increase / decrease amount of the light quantity of each of the light sources 12 to the initial set value. On the other hand, if it is determined in step S8 that the eye is not closed (step S8: NO), the process proceeds to step S10 without correcting the initial setting value of the light amount information.

  Next, the initial setting value of the light amount information of each of the first light source 11 and the second light source 12 read in step S3 or the light amount of each of the first light source 11 and the second light source 12 corrected in step S9. Based on the set value of the information, a light source dimming signal is generated (step S10).

  The first light source 11 and the second light source 12 are turned on according to the light source dimming signal generated in step S10 (step S11), and the lighting control operation of the illumination device 10 is ended.

  The light source dimming signal for the light source unit 1 of the illuminating device 10 configured as described above is appropriately set according to the specific application location of the illuminating device 10. Hereinafter, the arrangement configuration of the illumination device according to the application place and lighting control of the light source unit by the light source dimming signal will be described based on the drawings.

  FIG. 10 is a schematic diagram showing an arrangement configuration of the illumination device 10 according to the present embodiment mounted on a vehicle. This is an application example when there is only one irradiated person and the irradiated person wants to maintain an awake state. The detector 6 that detects information indicating the open / closed state of the eye of the irradiated person is provided in front of the driver's seat of a vehicle (not shown) so that the imaging unit 61 can capture the driver's face. It is provided at an appropriate position above the in-vehicle device operation panel 100. The light source unit 1 is provided on the hub 101a of the steering wheel 101 of the vehicle steering apparatus, and the angle is appropriately adjusted so that the light emitted from the light source unit 1 is applied to the driver's face. The input device 5 is provided on an annular rim 101b of the steering wheel 101.

  FIG. 11 is an example of a timing chart showing the process of lighting and light quantity control of the lighting apparatus 10 according to the present embodiment mounted on a vehicle. 11A shows the first light source 11, FIG. 11B shows the second light source 12, and FIG. 11C shows the light source unit 1 including the first light source 11 and the second light source 12, respectively. 11A, 11B, and 11C, the horizontal axis represents time, and the vertical axis represents the amount of light. The light source control unit 3 turns off the first light source 11 and the second light source 12 when the input signal from the power switch provided by the input device 5 is off, and the input signal from the power switch is on. The first light source 11 and the second light source 12 are turned on according to the light source dimming signal. The sensor signal given to the light source control unit 3 by the image signal analysis unit 63 is a signal indicating that the driver who is irradiated is in the closed eye state or the closed eye state. When the sensor signal is a signal indicating an eye-closed state, the light source control unit 3 keeps the light amount of the second light source 12 constant and the light amount of the first light source 11 is a signal indicating the eye-open state. Than to increase.

  By performing the lighting control of the lighting device 10 as described above, the light amount of the first light source 11 that emits light having a high light transmittance of the eyelid is increased when the driver who is an irradiated person is in an eye-closed state. Therefore, the amount of light stimulation given to the photoreceptor on the retina of the driver who is in the closed eye state through the eyelid increases. As a result, the driver with closed eyes feels light stimulation even when the eyes are closed. Therefore, the driver is guided to the eye opening state by the light stimulation, so that the driver with eyes closed can effectively open the eyes. Can be encouraged. The light quantity of the second light source 12 is kept constant, and when the driver is closed, the power consumption is lower than when the light quantities of both the first light source 11 and the second light source 12 are increased. , Can promote eye opening efficiently.

  FIG. 12 is a schematic diagram showing an arrangement configuration of the illumination device 10 according to the present embodiment installed in the conference room. This is an application example when there are a plurality of irradiated persons (irradiated person 1, irradiated person 2, irradiated person 3) and all of the irradiated persons want to maintain an awake state. The detector 6 for detecting information indicating the open / closed state of the irradiated person's eyes is provided at substantially the center of the top surface of the table 102 in the conference room. The imaging unit 61 preferably includes an optical member using a wide-angle lens such as a fish-eye lens so that the imaging unit 61 captures at least the face portion of all of the plurality of irradiated persons. In addition, you may comprise so that a several imaging part may be arrange | positioned suitably as needed. The light source unit 1 is provided on the ceiling 103, and the input device 5 is provided in the approximate center of the top surface of the table 102 together with the detector 6. The imaging unit 61 gives image information including at least the face portion of all irradiated persons acquired by the imaging element to the image signal analysis unit 63 via the imaging control unit 62. The image signal analysis unit 63 obtains the degree of eye opening of each irradiated person, determines whether the eye is open or closed, and gives a sensor signal of each irradiated person as a determination result to the light source control unit 3.

  FIG. 13 is an example of a timing chart showing the lighting and light quantity control process of the lighting apparatus 10 according to the present embodiment installed in the conference room. 13A shows the first light source 11, FIG. 13B shows the second light source 12, and FIG. 13C shows the light source unit 1 including the first light source 11 and the second light source 12, respectively. 13A, 13B, and 13C, the horizontal axis indicates time, and the vertical axis indicates the amount of light. The light source control unit 3 turns off the first light source 11 and the second light source 12 when the input signal from the power switch provided by the input device 5 is off, and the input signal from the power switch is on. The first light source 11 and the second light source 12 are turned on according to the light source dimming signal. The sensor signal given to the light source control unit 3 by the image signal analysis unit 63 indicates that each of a plurality of irradiated persons (irradiated person 1, irradiated person 2, irradiated person 3) is in an eye-closed state or an eye-closed state. Signal. When at least one of the sensor signals is a signal indicating a closed eye state, the light source control unit 3 detects the light amount of the first light source 11 while keeping the total light amount of the first light source 11 and the second light source 12 constant. The signal is increased more than when the signal indicates an open eye state. That is, the light amount of the second light source 12 is decreased by the increase of the light amount of the first light source 11.

  By performing the lighting control of the lighting device 10 as described above, the amount of light of the first light source 11 that emits light with high light transmittance of the eyelid is increased when at least one person to be irradiated is in an eye-closed state. Therefore, the amount of light stimulation given to the photoreceptor on the retina of the irradiated subject who is in the closed eye state through the eyelid increases. As a result, the irradiated subjects such as the irradiated subject 1 and the irradiated subject 2 of this example who are in an eye-closed state feel a strong light stimulus even when their eyes are closed. Therefore, it is possible to effectively promote eye opening of the irradiated subject in the closed eye state.

  Moreover, the total light quantity of the 1st light source 11 and the 2nd light source 12 is hold | maintained uniformly, and is emitted from the 1st light source 11 and the 2nd light source 12, and is mixed with a to-be-irradiated person. Since the light corresponding to the total amount of light thereafter enters the eye, the amount of light stimulation applied to the photoreceptor on the retina of the irradiated subject in the open eye state is always substantially constant. As a result, the irradiated person who is in the open state like the irradiated person 3 in this example feels that the substantially constant light amount is maintained, and it is possible to avoid giving the uncomfortable feeling to the irradiated person in the open state. .

  As described above, in this example, it is possible to selectively give appropriate light stimulation to the irradiated subject in the closed eye while providing illumination with a substantially constant brightness to the irradiated subject in the open eye state.

  In the present embodiment, the characteristics of the eye of the irradiated person are extracted, the degree of eye opening is obtained by image analysis, and the eye opening state and the eye closing state are determined based on the obtained degree of eye opening. However, the present invention is not limited to this, and the analysis may be performed in consideration of not only the eyelid movement but also the eye movement. This makes it possible to analyze not only the open / closed eye state, but also the sleepiness state such as REM sleep and non-REM sleep. For example, by analyzing the movement of the eyelids, the frequency of blinking is detected and combined with the eye movement analysis. By performing the above processing in the image signal analysis unit, the sensor signal is determined according to the level of sleepiness (for example, wakefulness, REM sleep, 4-stage non-REM sleep), and light source dimming is performed according to the determined sensor signal By generating a signal for use, it is possible to give the irradiated person an appropriate light stimulus according to a finer condition of the irradiated person.

  In the present embodiment, as the detector 6, an image capturing unit 61 that captures an irradiated person, an image capturing control unit 62 that controls the image capturing unit 61, and an image that analyzes an image captured by the image capturing unit 61. Although the imaging device provided with the signal analysis part 63 is used, it is not limited to this, What is necessary is just a detector which can perform sleep and / or sleepiness determination. For example, an electroencephalograph that measures an electroencephalogram may be used, and in this case, very detailed detection can be performed in sleepiness determination. When performing an electroencephalogram measurement, it is necessary to attach an electrode to the body of the irradiated person, but it can be suitably used, for example, when used for an inpatient.

  The detector 6 may be a detector capable of measuring body pressure, body temperature, heart rate, and the like. FIG. 14 is a specific example of a detector applicable to the illumination device according to this embodiment. FIG. 14A shows an example in which a detector 6a capable of measuring sheet-like body pressure and body temperature is installed on a chair or the like in a conference room. The body pressure and body temperature can be measured by the detector 6a, and the sleep state and sleepiness level can be analyzed using the body movement and body temperature fluctuation values obtained from the body pressure measurement values. FIG. 14B shows an example of a wristwatch type detector in which a detector 6b capable of measuring heartbeat, pulse wave and body temperature is provided inside a belt attached to the arm. The heart rate, pulse wave, and body temperature can be measured by the detector 6b, and the sleep state and drowsiness level can be analyzed using the measured values of the heart rate, pulse wave, and body temperature. Furthermore, it is possible to use a combination of multiple types of sensors such as an imaging device, a body pressure sensor, a body temperature sensor, etc. as a detector. In this case, the sleep state, sleepiness level, etc. of the irradiated person can be determined more finely and reliably. It is possible to provide a more appropriate light stimulus to the irradiated person according to the determination result.

(Embodiment 2)
FIG. 15 is a block diagram showing a schematic configuration of the illumination device 20 according to Embodiment 2 of the present invention.

  A signal receiver 4 is connected to the light source controller 3, and an input signal from the input device 5 is given to the signal receiver 4 wirelessly or by wire. The input device 5 inputs, for example, a stimulus switch such as a power switch for accepting an operation for turning on / off the lighting device, an operation for turning on / off an alarm function, a time for starting stimulus application, and a time for ending stimulus application. An alarm setting switch that accepts an alarm setting operation including an operation to perform, a stimulus setting switch that accepts a setting operation of the type and / or size of a stimulus that is generated as an alarm, and transmits a signal according to the operation of these switches And a signal transmission unit 5a. Note that the input device 5 may be configured to accept an operation of changing the light color and / or light amount of the light source unit 1.

  The light source control unit 3 is connected to a clock device 8 that outputs an alarm signal for notifying the arrival of a set time. The timepiece device 8 includes a current time generation unit 81 that has an oscillator and ticks time, a stimulus application information storage unit 82 that stores stimulus application information such as a time to start stimulus application, a time to end stimulus application, and a clock control. Part 83. When the alarm function ON signal is given as an input signal, the light source controller 3 receives the alarm operation command signal and the input signal from the alarm setting switch of the input device 5 given to the signal receiver 4 as a clock controller. 83.

  The clock control unit 83 reads the previous setting value of the stimulus application information from the stimulus application information storage unit 82 and acquires the current time from the current time generation unit 81. The stimulus application information storage unit 82 stores a stimulus application start time t1 and an end time t2. When the stimulus application information is given as an input signal, the clock control unit 83 changes the setting value of the stimulus application information to the set value of the given stimulus application information, and the changed set value is the stimulus application information storage unit 82. To remember. The clock controller 83 gives the light source controller 3 the current time t, which is time information, and the stimulus application start time t1 and end time t2, which are stimulus application information.

  The light amount information storage unit 7 is changed based on the initial setting values of the light amount information of the first light source 11 and the second light source 12, the time information given by the clock control unit 83, and the stimulus application information. The light quantity information of each of the light source 11 and the second light source 12 is stored. The light source control unit 3 determines that the current time is the first time zone (t1 ≦ t <ta) or the second time based on the current time t, the stimulus application start time t1 and the end time t2 given by the clock control unit 83. It is determined whether or not it is a time zone (ta ≦ t <t2). In addition, ta can be set as appropriate within the stimulus application time, and in this example, ta is set to (t1 + t2) / 2, which is intermediate between the start time t1 and the end time t2. In addition, the illuminating device 20 includes the detector as described above, and is configured to detect the open / closed state of the irradiated person's eyes, thereby controlling the light source with ta as the irradiated person's eyes opened. By this, it is possible to impart light stimulation to irradiation more effectively.

  The light source control unit 3 is determined in correspondence with the first time zone, the second time zone, or other time zones, and the first light source 11 according to the light amount information stored in the light amount information storage unit 7. And the light source dimming signal for each of the second light sources 12 is generated, and the first light source 11 and the second light source 12 are driven and controlled according to the generated light source dimming signals. Specifically, the light amount information stored in the light amount information storage unit 7 is the first light source 11 and the second light source 12 with the predetermined light amounts Q1 and 0 in the first time zone. During the two-hour period, the light amounts of the first light source 11 and the second light source 12 are 0 and the predetermined light amount Q2, respectively, and during the other time periods, the first light source 11 and the second light source 12 respectively. The light intensity is the initial setting value. Since other configurations are the same as those of the first embodiment shown in FIG. 2, the same reference numerals as those in FIG. 2 are given to corresponding components, and detailed description of the configurations and operations is omitted.

  FIG. 16 is an example of a flowchart showing a processing procedure of lighting control of lighting apparatus 20 according to the present embodiment. The light source control unit 3 acquires an input signal from the input device 5 (step S31), and reads the initial setting values of the light amount information of the first light source 11 and the second light source 12 from the light amount information storage unit 7 ( Step S32).

  It is determined whether or not the alarm function is on based on the input signal acquired in step S31 (step S33). Whether or not the alarm function is on is determined by whether the input signal given from the alarm setting switch of the input device 5 to the signal receiving unit 4 is an on signal or an off signal in a state where the power is turned on. Is done.

  If it is determined in step S33 that the alarm function is on (step S33: YES), the previous setting value of the stimulus application information is read from the stimulus application information storage unit 82 (step S34), and the current time generation unit 81 is read. The current time is acquired (step S35). On the other hand, if it is determined in step S33 that the alarm function is off (step S33: NO), it is determined whether or not a lighting command is being issued based on the input signal acquired in step S31 (step S36). . Whether or not a lighting command is being issued is determined based on whether the input signal supplied from the power switch of the input device 5 to the signal receiving unit 4 is a lighting signal or a light-off signal when the power is turned on. .

  If it is determined in step S36 that the lighting command is being issued (step S36: YES), the process proceeds to step S42. On the other hand, if it is determined in step S36 that the lighting command is not being issued (step S36: NO), the first light source 11 and the second light source 12 are turned off (step S37), and the sequence returns to step S31 to repeat a series of operations. .

  Next, it is determined whether or not there is stimulus imparting information based on the input signal acquired in step S31 (step S38). The presence / absence of the stimulus application information is determined by whether or not the input signal acquired in step S31 includes a signal indicating the stimulus application start time t1 and the end time t2 as the stimulus application information.

  When it is determined in step S38 that there is stimulus application information (step S38: YES), the setting value of the stimulus application information is changed to the set value of the given stimulus application information (step S39), and the changed setting value is changed. The information is stored in the stimulus application information storage unit 82. When it is determined in step S38 that there is no stimulus application information (step S38: NO), the process proceeds to step S40 without changing the setting value of the stimulus application information.

  Based on the setting value of the stimulus applying information changed in step S39 or the previous set value of the stimulus applying information read in step S34 and the current time acquired in step S35, the current time t is the stimulus applying time. It is determined whether or not there is (t1 ≦ t <t2) (step S40). When it is determined in step S40 that the current time t is the stimulus application time (step S40: YES), the set value of the light amount information is changed (step S41). On the other hand, when it is determined in step S40 that the current time t is not the stimulus application time (step S40: NO), the process returns to step S36 and the series of operations is repeated.

  FIG. 17 is a flowchart showing a procedure for changing the set value of the light amount information. The light source control unit 3 determines the current time based on the setting value of the stimulus imparting information acquired in step S31 or the previous set value of the stimulus imparting information read in step S34 and the current time acquired in step S35. It is determined whether t is in the first time zone (t1 ≦ t <ta) (step S45). When it is determined in step S45 that the current time t is the first time zone (step S45: YES), the corresponding light amount information from the light amount information storage unit 7 (specifically, the light amount of the first light source 11 = predetermined). The light quantity Q1 and the light quantity of the second light source 12 are read, the set value of the light quantity information is changed (step S46), and the process returns.

  On the other hand, if it is determined in step S45 that the current time t is not in the first time zone (step S45: NO), that is, if the current time t is in the second time zone, the corresponding light quantity information ( Specifically, the light amount of the first light source 11 = 0, the light amount of the second light source 12 = the predetermined light amount Q2) is read, the set value of the light amount information is changed (step S47), and the process returns.

  The initial setting value of the light amount information of each of the first light source 11 and the second light source 12 read in step S32 or the setting of the light amount information of each of the first light source 11 and the second light source 12 changed in step S41. Based on the value, a light source dimming signal is generated (step S42).

  The first light source 11 and the second light source 12 are turned on according to the light source dimming signal generated in step S42 (step S43), and the lighting control operation of the illumination device 20 is ended.

  The light source dimming signal for the light source unit 1 of the illuminating device 20 configured as described above is appropriately set according to the specific application location of the illuminating device 20. FIG. 18 is a diagram showing an example in which the lighting device 20 according to the present invention is applied to a clock device 8 that outputs an alarm signal for notifying the arrival of a set time, that is, a so-called alarm clock. This is an application example when it is desired to give an wake-up effect to the irradiated person, for example, placed on the bedside of the irradiated person.

  The timepiece device 8 is a so-called table clock, and the input device 5 is connected to the lower portion of the timepiece device 8. A light source unit 1 having a plurality of light sources is provided on the upper part of the timepiece device 8. It is desirable that the light source unit 1 is configured so that the angle can be appropriately adjusted so that the light emitted from the light source unit 1 is irradiated onto the face of the person to be irradiated.

  FIG. 19 is an example of a timing chart showing the lighting and light quantity control process of the illumination device 20 according to the present embodiment. 19A shows the first light source 11, FIG. 19B shows the second light source 12, and FIG. 19C shows the light source unit 1 including the first light source 11 and the second light source 12, respectively. 19A, 19B, and 19C, the horizontal axis indicates time, and the vertical axis indicates the amount of light. As shown in FIG. 19, the light source control unit 3 responds to the light source dimming signal generated based on the input signal from the power switch and the input signal from the alarm setting switch given by the input device 5. The light source 11 and the second light source 12 are turned on. During the first time period (t1 ≦ t <ta), the light source control unit 3 turns on the first light source 11 that emits light in a wavelength region having a high light transmittance of the soot, and the second time period (ta ≦ t). During t <t2), the second light source 12 that emits light in a wavelength region that is highly effective in suppressing the secretion of melatonin is turned on.

  By performing lighting control of the lighting device 20 as described above, after first stimulating eye opening by applying a light stimulus having a high light transmittance of the eyelid to the sleeping subject, the melatonin secretion suppression effect is achieved. High light stimulation is given to the irradiated person, and the irradiated person can be sufficiently awakened after the eyes are opened, so that a more reliable alarming effect can be obtained. Further, in this example, the light amount of the second light source 12 in the second time zone is larger than the light amount of the first light source 11 in the first time zone, and as a result, the total light amount after mixed light (FIG. 19C) can be increased step by step, and the alarming effect can be improved.

  FIG. 20 is another example of a timing chart showing the process of lighting and light quantity control of the lighting device 20 according to the present embodiment. 20A shows the first light source 11, FIG. 20B shows the second light source 12, and FIG. 20C shows the light source unit 1 including the first light source 11 and the second light source 12. 20A, 20B, and 20C, the horizontal axis indicates time, and the vertical axis indicates the amount of light. The light source control unit 3 is configured such that the light amount of the first light source 11 that emits light in a wavelength region with high light transmittance of the eyelid is the second light source 12 in the first time zone of the stimulus application time (t1 ≦ t <t2). In the second half of the stimulus application time, the amount of light from the second light source 12 that emits light in a wavelength region that is highly effective in suppressing secretion of melatonin is greater than the amount of light from the first light source 11 so as to be greater than the amount of light. Each of the first light source 11 and the second light source 12 is turned on so as to be.

  In this case, the procedure and contents for changing the set value of the light amount information are different from the contents shown in FIGS. 16 and 17, but the others are the same. That is, the light source control unit 3 determines whether or not the current time is within the stimulus applying time, and when it is within the stimulus applying time, it responds to the passage of time as shown in FIGS. If it is changed to the set value of the light amount information set so as to obtain the amount of light that changes, and it is outside the stimulus application time, the sequence returns to step S36 and the series of operations is repeated.

  By performing lighting control of the lighting device 20 as described above, the light amount of the two types of light sources is gradually switched and the total light amount after mixing is gradually increased during the stimulus application time, and the total light amount is increased. As a result, the alarming effect can be improved.

  FIG. 21 is another example of a timing chart showing the process of lighting and light quantity control of the lighting device 20 according to the present embodiment. 21A shows the first light source 11, FIG. 21B shows the second light source 12, and FIG. 21C shows the light source unit 1 composed of the first light source 11 and the second light source 12, respectively. In FIGS. 21A, 21B, and 21C, the horizontal axis indicates time, and the vertical axis indicates light quantity. In this example, similarly to the example shown in FIG. 20, the light source control unit 3 emits light in a wavelength region in which the light transmittance of the kite is high in the first half of the stimulus application time (t1 ≦ t <t2). The second light source that emits light in a wavelength region that has a high effect of suppressing secretion of melatonin during the second half of the stimulus application time so that the light amount of the first light source 11 is greater than the light amount of the second light source 12. When the light quantity of 12 is larger than the light quantity of the first light source 11 and the output signal from the power switch of the input device 5 is a lighting signal, at least the first quantity so that the total light quantity after mixing is constant. The light source 11 and the second light source 12 are turned on.

  In this case, the procedure and contents for changing the set value of the light amount information are different from the contents shown in FIGS. 16 and 17, but the others are the same. That is, the light source control unit 3 determines whether or not the current time is within the stimulus applying time, and determines whether or not the output signal from the power switch is a lighting signal when the current time is within the stimulus applying time. . When it is a lighting signal, the size is determined so that the total light amount becomes constant before and after the stimulus application time and the stimulus application time, and according to the passage of time as shown in FIGS. It changes to the set value of the light quantity information set to obtain the changing light quantity. When it is not a lighting signal, the light quantity information set to obtain a light quantity that changes with the passage of time as shown in FIGS. 21A and 21B without changing the magnitude of the preset light quantity value. Change to the set value. On the other hand, when it is outside the stimulus application time, the process returns to step S36 to repeat a series of operations.

  By performing lighting control of the lighting device 20 as in this example, for example, when a plurality of irradiated persons are sleeping in the same room, the first irradiation target is not yet awakened to the irradiated persons. By switching on between the light source 11 and the second light source 12, the light stimulus with high light transmittance of the eyelid is first given to promote eye opening, and then the light stimulus with high melatonin secretion suppression effect is given. Thus, a reliable alarm effect can be obtained. On the other hand, since a substantially constant total amount of light is held, the irradiated person who has already been awakened and is in an open eye condition hardly feels a change in the amount of light, and does not feel uncomfortable.

  In the present embodiment described above, the light source unit 1 is controlled to be turned on according to the time information and the stimulus imparting information by the timepiece device 8, but the present invention is not limited to this. It is also possible to combine the sensor signal from the detector 6 described in the above with the time information and stimulus application information from the timepiece device 8 and control the lighting of the light source unit 1 according to these contents.

(Embodiment 3)
FIG. 22 is a block diagram illustrating a schematic configuration of the illumination device 30 according to the third embodiment.

  A signal receiver 4 is connected to the light source controller 3, and an input signal from the input device 5 is given to the signal receiver 4 wirelessly or by wire. The input device 5 includes, for example, a power switch that accepts an operation for turning on / off the lighting device, a light stimulus changeover switch that accepts an operation for switching whether or not to apply a light stimulus, and whether or not the total light amount is constant. A constant light amount switch that accepts an operation to switch, a stimulus setting switch that accepts a setting operation of the type and / or size of a stimulus to be generated, and a signal transmission unit 5a that transmits a signal according to the operation of these switches. Become. Note that the input device 5 may be configured to accept an operation of changing the light color and / or light amount of the light source unit 1.

  Further, a stimulus signal generator 9 is connected to the light source controller 3. As shown in FIG. 22, the stimulation signal generator 9 includes a sample clock generation unit 91, a stimulation signal storage unit 92, a random number generation unit 93, a linear conversion unit 94, and a stimulation signal control unit 95 that controls them. It is comprised so that the stimulation signal of arbitrary signal waveforms can be generated. When the light stimulus ON signal of the light stimulus switching switch is given as an input signal, the light source control unit 3 uses the stimulus setting switch of the input device 5 given to the signal receiving unit 4 together with the operation command signal for giving light stimulus. To the stimulus signal controller 95. The stimulus signal control unit 9 is based on the input signal from the stimulus setting switch of the input device 5 and, as will be described below, the sample clock generation unit 91, the stimulation signal storage unit 92, the random number generation unit 93, and the linear conversion unit 94. An operation command is given to each part, a necessary parameter is obtained from each part, a stimulation signal is generated, and given to the light source control part 3.

  The stimulation signal control unit 95 reads the stimulation signal information from the stimulation signal storage unit 92 in which stimulation signal information such as parameters for generating the stimulation signal is stored, and generates the stimulation signal based on the read stimulation signal information To do. The stimulus signal control unit 95 changes the stimulus signal information based on the input signal from the stimulus setting switch of the input device 5 given to the signal receiving unit 4, and sends the changed stimulus signal information to the stimulus signal storage unit. 92. Further, the stimulus signal generator 9 can input any information such as a trigger signal that can be synchronized with an audio device or the like from the outside, for example, and a stimulus signal according to the information of the external input. The stimulation signal information stored in advance in the storage unit 92 is changed, and the changed stimulation signal information is stored in the stimulation signal storage unit 92.

  The stimulation signal control unit 95 generates a random number in the random number generation unit 93 based on the parameter that is the stimulation signal information, and gives the generated random number to the sample clock generation unit 91. The sample clock generation unit 91 generates a sample clock signal according to the given random number, and supplies the generated sample clock signal to the stimulation signal control unit 95. The stimulation signal control unit 95 modulates the amplitude of the sample clock signal provided by the sample clock generation unit 91 according to the linear signal from the linear conversion unit 94 to generate a stimulation signal, and provides the light source control unit 3 with the stimulation signal. The first light source 11 and / or the second light source 12 is driven and controlled according to the stimulus signal generated in this manner, so that the light amount of the first light source 11 and / or the second light source 12 is changed over time. It will change randomly according to.

  The light source control unit 3 includes the first light source 11 and the second light source 11 based on the stimulus signal given by the stimulus signal control unit 95, the input signal from the input device 5, and the light amount information stored in the light amount information storage unit 7. The light source dimming signal of each of the light sources 12 is generated, and the first light source 11 and the second light source 12 are driven and controlled according to the generated light source dimming signal. The light quantity information storage unit 7 stores initial setting values of the light quantity information of the first light source 11 and the second light source 12, the stimulus signal given by the stimulus signal control unit 95, the first light source 11 and the second light source 11. A reference table indicating the correspondence relationship between the light amounts of the respective light sources 12 is stored. Since other configurations are the same as those of the first embodiment shown in FIG. 2, the same reference numerals as those in FIG. 2 are given to corresponding components, and detailed description of the configurations and operations is omitted.

  FIG. 23 is an example of a flowchart showing a processing procedure of lighting control of lighting apparatus 30 according to the present embodiment. This example is configured to arbitrarily change the waveform of the signal of the light stimulus to be applied to the irradiated person and to select whether or not the light stimulus is applied and whether or not the total light amount is kept substantially constant. An example. The light source control unit 3 acquires an input signal from the input device 5 (step S51), and determines whether or not a lighting command is being issued based on the input signal acquired in step S51 (step S52). Whether or not a lighting command is being issued is determined based on whether the most recent input signal supplied from the power switch of the input device 5 to the signal receiving unit 4 is a lighting signal or a light-off signal when the power is turned on. Is done.

  If it is determined in step S52 that the lighting command is being issued (step S52: YES), the initial setting values of the light amount information of the first light source 11 and the second light source 12 are read from the light amount information storage unit 7 ( On the other hand, if it is determined in step S52 that the lighting command is not being issued (step S52: NO), the first light source 11 and the second light source 12 are turned off (step S54), and the sequence returns to step S51. Repeat the operation.

  It is determined whether or not the light stimulus is on based on the input signal acquired in step S51 (step S55). Whether or not the light stimulus is on depends on whether the input signal supplied from the light stimulus switch of the input device 5 to the signal receiving unit 4 is an on signal or an off signal when the power is turned on. Determined. If it is determined in step S55 that the light stimulus is on (step S55: YES), the process proceeds to step S56. On the other hand, when it is determined in step S55 that the light stimulus is off (step S55: NO), the process proceeds to step S63.

  It is determined whether or not there is a stimulus signal parameter based on the input signal acquired in step S51 (step S56). The presence / absence of the parameter of the stimulus signal is determined based on the input signal from the stimulus setting switch of the input device 5. When it is determined in step S56 that there is a stimulation signal parameter (step S56: YES), the stimulation signal parameter is changed to the given parameter (step S57), and the changed parameter is stored in the stimulation signal storage unit 92. Remember. If it is determined in step S56 that there is no stimulation signal parameter (step S56: NO), the process proceeds to step S58 without changing the parameter.

  Based on the stimulation signal parameter changed in step S57 or the stimulation signal parameter stored in the stimulation signal storage unit 92, the stimulation signal A is generated as described above (step S58).

  Next, it is determined whether or not the total light quantity constant is on based on the input signal acquired in step S51 (step S59). Whether or not the total light quantity constant is ON is determined based on an input signal from the light quantity constant switch of the input device 5. If it is determined in step S59 that the constant total light amount is on (step S59: YES), a stimulation signal B is generated (step S60), and the first light source is generated based on the stimulation signal A generated in step S58. 11 is changed based on the stimulus signal B generated in step S60 (step S61). The stimulus signal B has a decrease / output value corresponding to the increase / decrease of the output value of the stimulus signal A so that the total light amount from the first light source 11 and the second light source 12 is constant. It is going to increase.

  On the other hand, when it is determined in step S59 that the constant total light amount is off (step S59: NO), the light amount information setting value of the first light source 11 is changed based on the stimulus signal A generated in step S58. (Step S62).

  The initial setting values of the light amount information of the first light source 11 and the second light source 12 read in step S53, the first light source 11 and / or the second light source 12 changed in step S61 or step S62, respectively. A light source dimming signal is generated based on the set value of the light amount information (step S63).

  The first light source 11 and the second light source 12 are turned on according to the light source dimming signal generated in step S63 (step S64), and the lighting control operation of the illumination device 30 is ended.

  The light source dimming signal for the light source unit 1 of the illuminating device 30 configured as described above is appropriately set according to the specific application location of the illuminating device 30. This lighting device 30 is applicable when there are a plurality of irradiated persons and all of the irradiated persons want to maintain an awake state. For example, the lighting apparatus 30 is installed in a conference room as shown in FIG. 12 of the first embodiment. Can be used. FIG. 24 is an example of a timing chart showing the lighting and light quantity control process of the illumination device 30 according to the present embodiment, and a case where it is installed in a conference room will be described as an example.

  24A shows the first light source 11, FIG. 24B shows the second light source 12, and FIG. 24C shows the light source unit 1 including the first light source 11 and the second light source 12. 24A, 24B, and 24C, the horizontal axis indicates time, and the vertical axis indicates the amount of light. The light source control unit 3 includes the first light source 11 and the second light source according to the light source dimming signal generated based on the input signal from the power switch and the input signal from the stimulus setting switch given by the input device. Each of the light sources 12 is turned on. The light amount waveform of the first light source 11 and / or the second light source 12 that changes according to the stimulus signal A and the stimulus signal B is a rectangular wave whose amplitude and frequency change randomly as shown in FIG.

  The first light source 11 and the second light source 12 are turned on with the initial setting value of the light amount information stored in the light amount information storage unit 7 by the lighting operation of the lighting device accompanying the start of the conference. For example, in the case where a small pause is provided in the middle of a meeting and everyone refreshes, by selecting “light stimulation on” and “constant total light amount off”, the first light emitting light with high light transmittance The light quantity of the light source 11 changes at random. As a result, regardless of the open / closed state of the eye, a random light stimulus is applied to the photoreceptors on the retinas of all subjects, so that the eyes of the subject do not get used to the light stimulus and Awakening can be promoted by suppressing all sleepers' sleepiness.

  When it is desired to apply a light stimulus only to some irradiated persons who feel sleepy during the conference, the first light source 11 and the first light source 11 are selected by selecting “light stimulus on” and “constant total light amount on”. The light quantity of the 1st light source 11 which emits light with the high light transmittance of a kite changes at random, keeping the total light quantity from the 2 light sources 12 constant. As a result, since random light stimulation is given only to the irradiated subject in the closed eye state, the eye opening of the irradiated subject in the closed eye state can be promoted. On the other hand, the amount of photostimulation applied to the photoreceptor on the retina of the eye-opened irradiated person is always substantially constant, so that it is not necessary to give an uncomfortable feeling to the eye-opened irradiated person. In this case, since the light quantity of the second light source 12 that emits light having a high effect of suppressing the secretion of melatonin also changes randomly, it is possible to respond to the light stimulation of the photoreceptor on the retina with respect to the irradiated subject in the open eye state. Since adaptation can be suppressed, an effect of suppressing future sleepiness can be expected without being conscious of an irradiated person who has not yet felt sleepiness.

  Note that the illumination device 30 according to the present embodiment may be used in combination with the detector 6 and / or the clock device 8 described in the first and second embodiments. For example, when combined with the timepiece device 8, an alarm signal output from the timepiece device 8 is given as an external input to the stimulus signal generation device 9, so that any stimulus can be generated according to the stimulus application start time t 1 and end time t 2. It becomes possible to generate a signal

In the present embodiment, a rectangular waveform signal whose amplitude and frequency change randomly is generated as the stimulus signal. However, the present invention is not limited to this, and for example, a 1 / f fluctuation signal is generated. May be. The 1 / f fluctuation is obtained by logarithmically displaying the power spectrum and fitting by the least square method or the like, for example, the slope of the fitted straight line is 1 / (f ⁿ ) (n = 0.9 to 1.5), and it is known that a comfortable feeling or a relaxing effect can be given to a person by changing the amount of light with 1 / f fluctuation.

  In the timing chart shown in FIG. 24, instead of changing the light amount according to a rectangular waveform whose amplitude and frequency change randomly, the light amount is changed according to a waveform changing with 1 / f fluctuation. As a result, when “light stimulation on” and “total light amount constant off”, only the light amount of the first light source 11 is changed according to the 1 / f fluctuation signal, and the light amount of the second light source 12 is always constant. Therefore, regardless of the open / closed state of the eye, the photoreceptors on the retina of all irradiated persons are given a light stimulus that changes according to the 1 / f fluctuation signal. A comfortable feeling or a relaxing effect by the 1 / f fluctuation signal can be simultaneously given to all persons. When “photostimulation on” and “constant total light quantity on”, the light quantity of the second light source 12 is decreased by the increase of the light quantity of the first light source 11 so that the total light quantity after mixing is substantially reduced. Since it is set to be constant, a comfortable feeling or a relaxing effect can be selectively given only to the irradiated person in the closed eye state.

  When a 1 / f fluctuation signal is used as a stimulus signal, for example, a switch for accepting a switching operation between two modes of “overall relaxation” and “individual relaxation” is provided in the input device 5 instead of the constant light amount switch. In addition, the above-described control operation may be performed in accordance with the switching operation of the switch and the light stimulus switching switch. In addition to the constant light amount switch, a switch that accepts switching operation between two modes of “overall relaxation” and “individual relaxation” may be provided to operate separately from on / off of “light stimulation”. You may comprise so that ON / OFF of "light stimulation" and "constant total light quantity" can be controlled simultaneously.

  Usually, a comfortable feeling or a relaxing effect can be obtained more strongly when fatigue caused by tension, excitement, etc. is reduced. Therefore, it is desirable to give a stimulus by making the body as easy as possible. In particular, in order to obtain a light stimulus by a 1 / f fluctuation signal, it is necessary to keep the eye open, and if the eyes become tired, the comfort and relaxation effects cannot be fully utilized. By using the illumination device according to the form, it is possible to give a comfortable feeling or a relaxing effect by the 1 / f fluctuation signal to the irradiated person in the closed eye state, so that both the mind and the body of the irradiated person are relaxed. It becomes possible to make it.

(Embodiment 4)
FIG. 25 is a block diagram illustrating a schematic configuration of the illumination device 40 according to the fourth embodiment, and is a configuration example that realizes an alarming effect that is more effective when only one person is irradiated.

  A signal receiver 4 is connected to the light source controller 3, and an input signal from the input device 5 is given to the signal receiver 4 wirelessly or by wire. The input device 5 inputs, for example, a stimulus switch such as a power switch for accepting an operation for turning on / off the lighting device, an operation for turning on / off an alarm function, a time for starting stimulus application, and a time for ending stimulus application. An alarm setting switch that accepts an alarm setting operation including an operation to perform, a light stimulus changeover switch that accepts an operation for switching whether or not to apply a light stimulus, and a stimulus that accepts a setting operation for the type and / or size of the generated stimulus A setting switch and a signal transmission unit 5a that transmits signals according to the operation of these switches are provided. Note that the input device 5 may be configured to accept an operation of changing the light color and / or light amount of the light source unit 1.

  The light source control unit 3 is connected to a clock device 8 and a stimulus signal generator 9. Since the configuration of the timepiece device 8 is the same as that of the second embodiment shown in FIG. 15, the description of the internal configuration and operation is omitted. Since the configuration of the stimulus signal generation device 9 is the same as that of the third embodiment shown in FIG. 22, the description of the internal configuration and operation is omitted. In the present embodiment, the stimulus application start time t1 and end time t2 which are stimulus application information given from the clock device 8 are used as trigger signals for the stimulus signal generator 9. The stimulus signal generator 9 is configured to be able to output two-channel output signals, and supplies the generated two types of stimulus signals to the light source controller 3.

  The light source control unit 3 stores the time information and stimulus application information given by the clock control unit 83, the stimulus signal given by the stimulus signal control unit 95, the input signal from the input device 5, and the light quantity information storage unit 7. Based on a certain amount of light information, light source dimming signals for the first light source 11 and the second light source 12 are generated, and the first light source 11 and the second light source are generated according to the generated light source dimming signals. Each of the twelve is controlled. Since the other configuration is the same as that of the first embodiment shown in FIG. 2, the same reference numerals as those in FIG. 2 are given to corresponding components, and detailed description of the configuration is omitted.

  The processing procedure of the lighting control of the illuminating device 40 is the same as that of the second embodiment shown in FIG. 16 except for the procedure and contents of changing the set value of the light amount information, and the flowchart and description thereof are omitted.

  FIG. 26 is an example of a flowchart illustrating a procedure for changing the set value of the light amount information of the illumination device 40 according to the present embodiment. This example is an example in which the amount of light is changed in accordance with 1 / f fluctuation in order to prompt the irradiated person to get up comfortably. When the current time t is the stimulus application time (t1 ≦ t <t2), the stimulus signal control unit 95 of the stimulus signal generator 9 generates a 1 / f fluctuation signal, and the generated 1 / f fluctuation signal is generated. It gives to the light source control part 3 (step S71).

  The light source control unit 3 determines whether or not the light stimulation before getting up is on based on the input signal from the input device 5 (step S72). Whether the light stimulation before waking up is on or not is whether the input signal given from the stimulation setting switch of the input device 5 to the signal receiving unit 4 is an on signal or an off signal in a state where the power is turned on. Is determined.

  When it is determined in step S72 that the light stimulus before getting up is on (step S72: YES), the set value of the light amount information of the first light source 11 based on the 1 / f fluctuation signal generated in step S71. Is changed (step S73), the process returns and the operation for changing the set value of the light quantity information is terminated.

  On the other hand, when it is determined in step S72 that the light stimulus before getting up is off (step S72: NO), the light quantity information of the second light source 12 is determined based on the 1 / f fluctuation signal generated in step S71. The set value is changed (step S74), and the process returns to end the operation for changing the set value of the light amount information.

  The light source control unit 3 sets the initial light intensity information values of the first light source 11 and the second light source 12 and / or the light amount of the first light source 11 or the second light source 12 changed in step S73 or step S74. A light source dimming signal is generated based on the set value of information, and the first light source 11 and the second light source 12 are driven and controlled in accordance with the generated light source dimming signal.

  By performing the lighting control of the lighting device 40 as described above, when the light stimulus before getting up is on, the light amount of the first light source 11 that emits light with high light transmittance of the eyelids according to 1 / f fluctuation. Therefore, a 1 / f fluctuation light stimulus is given to the irradiated subject in the closed eye state, and a comfortable feeling can be given. On the other hand, when the light stimulus before waking up is off, the amount of light of the second light source 12 that emits light with a high effect of suppressing the secretion of melatonin is changed according to 1 / f fluctuation, so that the irradiation in the open eye state is performed. The person is given a light stimulus of 1 / f fluctuation, and a comfortable feeling can be given. In this case, the first light source 11 is lit with a constant light amount, for example, and the eye of the irradiated person is prompted to open by the light having high light transmittance of the eyelids from the first light source 11, and 1 / Since it is possible to give comfort to the irradiated person by the light stimulus of f fluctuation, it is possible to naturally induce the transition to the open eye state.

FIG. 27 is another example of a flowchart showing a procedure for changing the set value of the light amount information of the lighting apparatus 40 according to the present embodiment. This example is an example in which the amount of light is changed according to white noise and 1 / f fluctuation in order to strongly urge the irradiated person to wake up. As described above, the 1 / f fluctuation is obtained by logarithmically displaying the power spectrum and fitting it by, for example, the least square method or the like, so that the slope of the fitted straight line is 1 / (f ⁿ ) with respect to the frequency f. It is known that the fluctuation becomes (n = 0.9 to 1.5), and it is possible to give a comfortable feeling or a relaxing effect to a person by changing the light amount by 1 / f fluctuation. On the other hand, white noise is a fluctuation of 1 / (f ⁿ ) (n≈0), and the fluctuation is almost disordered and is known to be a noise that gives a person unpleasant feeling.

  When the current time t is the stimulus application time (t1 ≦ t <t2), the stimulus signal controller 95 of the stimulus signal generator 9 generates a 1 / f fluctuation signal and a white noise signal (step S81). The stimulus signal control unit 95 uses the white noise signal generated in step S81 as the signal A, and similarly subtracts the white noise signal from the 1 / f fluctuation signal generated in step S81 as the signal B. B is given to the light source controller 3 (step S82).

  The light source controller 3 changes the set value of the light amount information of the first light source 11 and the second light source 12 based on the signal A and the signal B obtained in step S82 (step S83), returns, and returns to the light source. The operation of changing the information setting value is terminated.

  The light source control unit 3 sets the initial setting values of the light amount information of the first light source 11 and the second light source 12 and / or the light amount information of the first light source 11 and the second light source 12 changed in step S83. Based on the value, a light source dimming signal is generated, and the first light source 11 and the second light source 12 are driven and controlled in accordance with the generated light source dimming signal.

  By performing lighting control of the illumination device 40 as described above, a light stimulus having a high light transmittance that changes according to the white noise signal is given to the irradiated subject in the closed eye state, and 1 / f is applied to the irradiated subject in the open eye state. Photostimulation that is highly effective in suppressing secretion of melatonin that changes according to the fluctuation signal is given. As a result, an unpleasant light stimulus is given to the irradiated person in the closed eye state, and a comfortable light stimulus is given to the irradiated person in the open eye state, and the awakening of the irradiated person can be further effectively promoted.

  FIG. 28 is a schematic diagram illustrating an example of an arrangement configuration of the illumination device 40 according to the present embodiment. The lighting device 40 according to the present embodiment can be suitably used in a bedroom for one person as shown in FIG. 28, for example.

  In the above embodiment, the light source unit 1 includes the first light source 11 that emits light having the spectral component in the first wavelength range and the irradiated object in the open-eye state in order to give a light stimulus to the irradiated person in the closed eye state. A second light source 12 that emits light having a spectral component in a second wavelength range different from the first wavelength range in order to give a stimulus to the person, even if there is only one light source Good.

  For example, one light source has a plurality of light emitting elements that emit light having different wavelength ranges, and controls the light emission intensity of the plurality of light emitting elements, so that the spectral components of the light source can be changed when the irradiated person is closed. , By controlling so that the permeability of the eyelids of the irradiated light is higher than when the eyes are open, the subject is exposed to light stimulus regardless of the open / closed state of the eyes. It is possible to prompt. As the light source, for example, there is an LED module in which a plurality of LEDs of different colors are packaged as shown in FIG.

  In the above embodiment, an LED is used as a light source. However, the present invention is not limited to this, and an EL (Electro Luminescence), a fluorescent lamp, a light bulb, or the like may be used.

  Further, it goes without saying that the present invention can be implemented in variously modified forms within the scope of the matters described in the claims.

It is a schematic diagram which shows the structure of the illuminating device which concerns on Embodiment 1 of this invention. It is a block diagram which shows schematic structure of the illuminating device which concerns on this Embodiment. It is an example of the light source which can be used suitably for a 1st light source. It is an example of the light source which can be used suitably for a 1st light source. It is a figure which shows the spectral luminous efficiency of photopic and scotopic vision. It is a figure which shows the spectral luminous efficiency which considered the light transmittance of the eyelid. It is an example of the light source which can be used suitably for a 1st light source. It is an example of the light source which can be used for a 2nd light source. It is an example of the flowchart which shows the process sequence of the lighting control of the illuminating device which concerns on this Embodiment. It is a schematic diagram which shows the arrangement configuration of the illuminating device which concerns on this Embodiment mounted in the vehicle. It is an example of the timing chart which shows the control process of lighting and the light quantity of the illuminating device based on this Embodiment mounted in the vehicle. It is a schematic diagram which shows the arrangement configuration of the illuminating device which concerns on this Embodiment installed in the meeting room. It is an example of the timing chart which shows the lighting and the light quantity control process of the illuminating device based on this Embodiment installed in the meeting room. It is a specific example of the detector applicable to the illuminating device which concerns on this Embodiment. It is a block diagram which shows schematic structure of the illuminating device which concerns on Embodiment 2 of this invention. It is an example of the flowchart which shows the process sequence of the lighting control of the illuminating device which concerns on this Embodiment. It is a flowchart which shows the procedure of the setting value change of light quantity information. It is a figure which shows the example which applied the illuminating device which concerns on this Embodiment to the alarm clock. It is an example of the timing chart which shows the control process of lighting of the illuminating device which concerns on this Embodiment, and light quantity. It is another example of the timing chart which shows the control process of lighting of the illuminating device which concerns on this Embodiment, and light quantity. It is another example of the timing chart which shows the control process of lighting of the illuminating device which concerns on this Embodiment, and light quantity. FIG. 6 is a block diagram showing a schematic configuration of a lighting device according to Embodiment 3. It is an example of the flowchart which shows the process sequence of the lighting control of the illuminating device which concerns on this Embodiment. It is an example of the timing chart which shows the control process of lighting of the illuminating device which concerns on this Embodiment, and light quantity. FIG. 6 is a block diagram showing a schematic configuration of a lighting device according to Embodiment 4. It is an example of the flowchart which shows the procedure of the setting value change of the light quantity information of the illuminating device which concerns on this Embodiment. It is another example of the flowchart which shows the procedure of the setting value change of the light quantity information of the illuminating device which concerns on this Embodiment. It is a schematic diagram which shows an example of the arrangement configuration of the illuminating device which concerns on this Embodiment. It is a figure which shows the wavelength characteristic of the secretion suppression of melatonin by nighttime light reception. It is a figure which shows the wavelength characteristic of the light transmittance of a ridge.

Explanation of symbols

1 Light source (multiple light sources)
11 1st light source 12 2nd light source 3 light source control part (control means)
6 Detector (Detection means)
8 Clock device (clock device)
9 Stimulus signal generator (stimulus signal generator)

Claims (17)

  In the illumination device including a plurality of light sources, the plurality of light sources include a first light source that emits light having a spectral component in a first wavelength region that is a wavelength region of 580 nm or more and a second light source that has a wavelength region of 580 nm or less. And a second light source that emits light having a spectral component in the wavelength region. Light having a spectral component in the first wavelength range that gives light stimulation by irradiating when the eye is closed and promotes eye opening, and spectral component in the second wavelength region that gives light stimulation and wakes up by irradiating at the time of eye opening A light source that emits light having
Illumination characterized in that by selecting and illuminating at least one of the light in the two wavelength ranges, a light stimulus is applied to the irradiated person to promote awakening regardless of the open / closed state of the irradiated person's eyes. apparatus.   The lighting device according to claim 1, wherein the first wavelength band is a wavelength band near 700 nm.   The lighting device according to claim 1, wherein the first wavelength range is a wavelength range of 580 to 630 nm.   The lighting device according to claim 1, wherein the second wavelength range is a wavelength range near 464 nm.   Control means for controlling the amount of light in each of the first and second wavelength ranges, and the control means is an open / closed state of the eye of the irradiated person irradiated with light in the first and / or second wavelength ranges The lighting device according to claim 1, wherein the light quantity in the first and / or second wavelength range is controlled according to the above.   Detection means for detecting the open / closed state of the eye of the irradiated person is provided, and the control means increases the amount of light in the second / first wavelength region according to the open / closed eye state detected by the detection means. The lighting device according to claim 6, wherein the lighting device is configured as described above.   The said control means increases the light quantity of the said 1st wavelength range, when the closed state of at least one to-be-irradiated person is detected by the said detection means, The said 1st wavelength range is increased. Lighting device.   Control means for controlling the amount of light in each of the first and second wavelength ranges, and clock means for outputting an alarm signal for notifying the arrival of a set time, wherein the control means is time information by the clock means. The illumination device according to any one of claims 1 to 5, wherein a light amount in the first and / or second wavelength range is controlled based on the alarm signal.   The control means turns on the light source so as to include at least the spectral components of the first and second wavelength ranges according to a first time zone and a second time zone determined based on an alarm signal from the clock means. The lighting device according to claim 9, wherein the lighting device is configured to be made to be.   In order to arbitrarily change the amount of light in the first and / or second wavelength region, a stimulus signal generating unit that generates a stimulus signal is provided, and the control unit is configured to output the first signal according to the stimulus signal from the stimulus signal generating unit. The lighting device according to any one of claims 1 to 10, wherein the light quantity in the first and / or second wavelength range is controlled.   12. The illumination device according to claim 11, wherein the control unit causes the stimulation signal generation unit to generate a stimulation signal when an eye-closed state is detected by the detection unit.   The lighting device according to claim 12, wherein the control means causes the stimulus signal generating means to generate a stimulus signal based on an alarm signal from the clock means.   The lighting device according to any one of claims 11 to 13, wherein the stimulation signal generated by the stimulation signal generation unit is a 1 / f fluctuation signal.   15. The illumination device according to claim 14, wherein the control unit controls the light amount in the first wavelength region in accordance with a 1 / f fluctuation signal.   The said control means controls the light quantity of the said 1st and 2nd wavelength range so that total light quantity may become substantially constant, The any one of Claim 1 to 15 characterized by the above-mentioned. Lighting device.   The stimulus signal generating means is configured to generate a 1 / f fluctuation signal and a white noise signal, and the control means is configured to generate the second and first noise signals according to the 1 / f fluctuation signal and the white noise signal. The illumination device according to claim 13 or 14, wherein the light quantity in each of the wavelength ranges is controlled.

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