JP2007134104A - Indoor lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for obtaining visual information without disturbing sleep of an asleep person in the same room when awakening while sleeping in a bed room or the like and going to a rest room or the like. <P>SOLUTION: By lighting only a light source mainly having a wavelength range of 500-580 nm, wavelengths restraining suppression of melatonin of a waking person are avoided. Thereby, secretion of melatonin is never reduced, and the asleep person is never wakened. In addition, since this wavelength range is hardly sensed by an eye-closing person, blinking of the light source is never sensed by him or her, and a sleeping state of the asleep person in the same room can be continued without disturbing his or her sleep. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an indoor lighting device.

  Conventionally, at night time, especially before bedtime, the color temperature of the illumination light in the living space is set to a low color temperature (reddish color light like a light bulb), so that it is compared to white light and daylight color light to the brain. It is known to reduce the irritation and promote smooth sleep, and a technique for changing the light color in accordance with the time of day or the human biological rhythm (for example, see Patent Document 1) has been proposed.

In addition, Patent Document 2 discloses that a light source is filtered so as not to have a spectral component in a wavelength range from 410 nm to 505 nm in order to secure visual information without inhibiting sleep by suppressing melatonin secretion by nighttime light reception. There is disclosed an indoor lighting fixture comprising:
JP 2000-252084 A JP 2005-230171 A

  As described in Patent Document 2, the relationship between the wavelength of light, biological rhythm, and sleep is reported in the following paper.

  Brainard et al. (2001): “Action Spectrum for Melatonin Regulation in Humans: Evidence for a Novel Circadian Photoreceptor”. Neurosci., 21 (16), 6405-6412 In this document, the wavelength characteristic of melatonin secretion suppression by nighttime light reception is clarified. Melatonin is a hormone secreted from the pineal gland in the brain and is often used from before sleep at night to during the first half of the sleep period (depending on individual differences and lifestyle rhythms, but from 10 pm to midnight) It is secreted and is thought to promote a decrease in body temperature and sleep. It has been clarified that the secretion of melatonin is suppressed by nighttime light reception, and the above-mentioned document reports a wavelength characteristic as shown in FIG. According to FIG. 7, the wavelength at which the melatonin secretion suppression sensitivity reaches a peak is about 464 nm, and when the sensitivity at the peak wavelength of 464 nm is 1, the sensitivity is in a range of 0.5 or more, that is, from about 400 nm to about 500 nm. In the range, it can be seen that the sensitivity of secretion suppression is particularly high.

  In this way, melatonin promotes lowering of body temperature and falling asleep at night, so light reception including the above wavelength range at night and at night should be avoided as much as possible in order to take a good-quality sleep, It is also necessary to deal with lighting devices and light sources.

  However, when sleeping in multiple places, it is important not to disturb the sleep of a person sleeping in the same room. For example, if a person who wakes up during sleep irradiates with a lighting device such as Patent Document 2 so that visual information can be obtained, the person who is asleep in the surroundings feels blinking of the light source. There was a risk of it.

  This is thought to be due to the fact that the brightness of the surroundings is sensed because the light passing through the eyelid is felt even when the eyes are closed. However, as reported in a paper by Moseley MJ et al. “Light transmission through the human eyelid: in vivo measurement.” Ophthalmic Physiol Opt. 1988; 8 (2): 229-30. It has been shown that the eyelid hardly transmits wavelengths up to about 580 nm. That is, it can be seen that light is felt at a wavelength of about 580 nm or more when the eyes are closed.

  From these facts, the purpose of this invention is to release melatonin in order to obtain visual information so as not to disturb sleep of sleeping people, for example, when sleeping in a bedroom. If the light is about 580 nm, which is about 500 nm or more, which is not suppressed, and it is difficult for a sleeping person to feel light, it is light in a wavelength range that does not suppress melatonin and inhibits sleeping of people sleeping around It aims to obtain visual information.

  The indoor lighting device according to the first aspect of the invention is characterized in that only the spectral component in the wavelength range from 500 nm to 580 nm is mainly emitted.

  In the present invention and each of the following inventions, the definitions and technical meanings of terms are as follows unless otherwise specified.

  The term “spectral component only in the wavelength region mainly from the wavelength of 500 nm to 580 nm” means that the spectral component mainly emitted is the wavelength region from the wavelength of 500 nm to 580 nm and contains almost no light emission in other wavelength regions. It is preferable that light emission in other wavelength ranges be at least 50% or less of an emission peak in a wavelength range from 500 nm to 580 nm.

  To irradiate only the spectral component in the wavelength range from 500 nm to 580 nm mainly means that the illumination device uses a light source having such a wavelength, or uses a filter or the like for a known light source, and mainly has a wavelength of 500 nm. It shows that it is an illuminating device which irradiates only the spectral component in the wavelength range from 580 nm to 580 nm. A green light-emitting diode is known as a light source that mainly irradiates only a spectral component in a wavelength range from 500 nm to 580 nm. In addition, it is allowed to form a light source by covering a known light source with a filter that transmits only 500 nm to 580 nm.

  As a lighting device using such a light source, it is also preferable to use a staircase lamp or a foot lamp.

  The indoor lighting device of the invention of claim 2 is characterized by comprising a light source having only a spectral component mainly in a wavelength range from 500 nm to 580 nm; and an appliance body for housing the light source.

  In addition to a light source having only a spectral component mainly in a wavelength range from 500 nm to 580 nm, it is also possible to accommodate light sources having different light colors, such as a white fluorescent lamp, in the instrument body.

  A green light-emitting diode is known as a light source mainly having only a spectral component in a wavelength range from 500 nm to 580 nm. In addition, it is allowed to use a filter that transmits only 500 to 580 nm to a known light source.

  As an example of an indoor lighting device, lighting fixtures such as a ceiling, a pendant, a downlight, and a bracket used for a bedroom are allowed. In this case, a light source having only a spectral component mainly in a wavelength region from a wavelength of 500 nm to 580 nm can be housed in the instrument together with a light bulb or a fluorescent lamp as a light source sufficient to obtain visual information when waking up. By doing so, only the light source having the above wavelength can be turned on at bedtime or when waking up at night, and a light bulb or a fluorescent lamp is turned on at other times before bedtime or when waking up. Other indoor lighting devices can be used for stair lights, foot lamps, bedside stands, and the like.

  An indoor lighting device according to a third aspect of the present invention includes a light source; a nightlight mainly having only a spectral component in a wavelength range of 500 nm to 580 nm; and a fixture main body that houses the light source and the nightlight. And

  As an example of an indoor lighting device, lighting fixtures such as a ceiling, a pendant, a downlight, and a bracket used for a bedroom are allowed. For example, when used in a ceiling lighting apparatus, it is preferable to use a night light housed together with a fluorescent lamp as a light source having only a spectral component mainly in a wavelength range from 500 nm to 580 nm. By always turning on the night light while sleeping, only the light source having the above wavelength can be always turned on when sleeping or when waking up at night.

  An indoor lighting device according to a fourth aspect of the present invention includes a light source mainly having a spectral component only in a wavelength range from 500 nm to 580 nm; an instrument body that houses the light source; and a person that emits a light source when motion of a person is detected. And a sensation sensor.

  The human sensor is a general sensor that detects and operates a human body temperature and movement. For example, a pyroelectric sensor or an infrared reflective sensor is allowed.

  By providing a human sensor, only a light source mainly having a wavelength range of 500 nm to 580 nm is turned on by detecting a human movement. As a result, the light source for obtaining visual information can be turned on automatically when waking up in the bedroom or going to the bathroom, etc., so that the room can be moved quickly and safely. Furthermore, since a person sleeping in the same room does not feel even when the light source is turned on, a comfortable sleep can be continued.

  According to the invention of claim 1, since only the light source mainly having only the wavelength range of 500 nm to 580 nm is turned on to avoid the wavelength that suppresses the secretion of the awakening human melatonin, the secretion of melatonin is prevented. There is no reduction and no awakening. Furthermore, since this wavelength range is hardly felt by a person with closed eyes, the light source does not feel blinking, which is effective in continuing the sleep state.

  As a result, the light source for obtaining visual information can be turned on automatically when waking up in the bedroom or going to the bathroom, etc., so that the room can be moved quickly and safely. Furthermore, a person sleeping in the same room does not feel even when the light source is turned on, so that a comfortable sleep can be continued.

  According to the second aspect of the present invention, in addition to a light source having only a spectral component mainly in a wavelength range from 500 nm to 580 nm, a light source having a different light color such as a white fluorescent lamp is housed inside the instrument body. Therefore, only the light source having the above wavelength can be turned on at bedtime or when waking up at night, and a light bulb or a fluorescent lamp can be turned on at other times before bedtime or when waking up. For this reason, it can also be used with ordinary lighting equipment. When sleeping at night, if a light source having only a spectral component in the wavelength range from 500 nm to 580 nm is turned on, the toilet is awakened while sleeping. The light source to obtain visual information when going to the room is always lit at bedtime so that the room can be moved safely and promptly. You can continue to sleep comfortably.

  According to claim 3, by always turning on the night light while sleeping, so that only the light source of the above wavelength is always turned on at the time of sleeping or at night, it will wake up during sleeping and put it in the toilet etc. Since the light source for obtaining visual information when going to the station is always lit at bedtime, the room can be moved quickly and safely, and people who are sleeping in the same room feel even if the light source is lit Because there is not, we can continue comfortable sleep.

  According to the fourth aspect of the present invention, only the light source having only the wavelength range of 500 nm to 580 nm is turned on by detecting the movement of the person by the human sensor. As a result, the light source for obtaining visual information can be turned on automatically when waking up in the bedroom or going to the bathroom, etc., so that the room can be moved quickly and safely. Furthermore, since a person sleeping in the same room does not feel even when the light source is turned on, a comfortable sleep can be continued.

  An embodiment of the present invention will be described with reference to FIGS. In these drawings, the same or corresponding parts are denoted by the same reference numerals, and repeated descriptions are omitted or simplified.

  FIG. 1 is a schematic configuration diagram of an illuminating device 1, in which a socket 5 for connecting a power line is provided in a ceiling socket 4 disposed on a ceiling 3 in the center of a circular substrate 2, and a circuit constituting a control circuit described later in this socket 5 A circuit box 6 containing components is attached. A night light 7 is attached to the center of the circuit box 6, and a reflector 8 is arranged around the circuit box 6. Under the reflector 8, two types of light sources having different correlated color temperatures are provided on the inside. A three-wavelength daylight white fluorescent lamp 9 having a correlated color temperature of 5000K is arranged, and a three-wavelength bulb fluorescent lamp 10 having a correlated color temperature of 2800K is arranged outside. Around the substrate 2, a cover 11 that covers the entire apparatus and is light-emitting and diffuses light is attached.

  In the nightlight, as shown in FIG. 2A, the arc tube bulb 7b of the light source lamp 7a is covered with a cover 7c. The cover 7c is a filter that transmits only the wavelength range of 500 nm to 580 nm. By attaching the cover 7c to the night light, the night light can emit light only in the wavelength range of 500 nm to 580 nm. Further, as shown in FIG. 2 (b), it is allowed to configure the luminous bulb of the light source lamp 7a of the night light 7 with a colored glass 7b 'that can transmit only the wavelength range of 500 nm to 580 nm.

  Further, as shown in FIG. 2C, a green light emitting diode 7d can be disposed inside the arc tube bulb 7a of the night light 7. As shown in FIG. 3, the spectral distribution of the green light emitting diode light emission 7d has a sensitivity range of about 530 nm to 580 nm when the sensitivity at the peak wavelength is 1, and suppresses the secretion of melatonin. It can be seen that this is a wavelength range that avoids the wavelength of light that passes through the eyelid and that hardly transmits the eyelid. By using a green light emitting diode in this way, a light source that mainly emits light only in the wavelength range of 500 nm to 580 nm can be easily obtained.

  As in this embodiment, by using a light source that emits light mainly in the wavelength range of 500 nm to 580 nm for the nightlight 7, avoiding the wavelength that suppresses the secretion of melatonin, and further, the wavelength range that hardly transmits the eyelids. Since it emits light, it is possible to obtain visual information without disturbing sleep and preventing sleep of a person sleeping in the same room by emitting only this nightlight when waking up before sleeping. For this reason, it is safe to move indoors without being noticed or awakened by the partner in the room, safe when hitting the toilet etc. during sleep, and arousal can be reduced, so after use is finished It is possible to return to sleep quickly.

  Next, a second embodiment will be described with reference to FIGS. In the present embodiment, the foot lamp 12 will be described as an example. FIG. 4 is a state diagram showing how the foot lamp 12 is attached. The foot lamp 12 shown in FIG. 4 has a plurality of green light emitting diodes (LEDs) 14 and a human sensor 15 arranged on the front surface, and a pair of plug plug blades inserted into the plug insertion port 13 of the outlet on the back surface (not shown). Is arranged. The green light emitting diode 14 mainly emits light only in the wavelength range of 500 nm to 580 nm.

  A charging changeover switch 16, a lighting changeover switch 17, and a nightlight changeover switch 18 are disposed on the side surface of the foot lamp 12. And a charging device, a battery, a control circuit, etc. (not shown) are suitably accommodated in the foot lamp 12 main body.

  The foot lamp 12 is charged at normal time, for example, when connected to an outlet as shown in the figure. When the night light changeover switch is turned on, the light emitting diode 14 is turned on when the human sensor detects the human body temperature or the movement of the person, so that the foot lamp 12 can be used.

  Further, by removing the foot lamp 12 from the outlet when a power failure occurs, the charged battery can be used as a portable electric lamp as a power source.

  By using the present embodiment, a light source for obtaining visual information can be automatically turned on when waking up to sleep in a bedroom or the like in a bedroom, so that the room can be moved quickly and safely. In addition, since a person sleeping in the same room does not feel even when the light source is turned on, a comfortable sleep can be continued.

  Further, 20 in FIG. 5 is a bedside stand, and this nightlight can be the same as the nightlight of the first embodiment.

The conceptual diagram of the illuminating device of 1st embodiment of this invention. The partial cross section figure of the nightlight used for 1st embodiment of this invention. The spectral distribution map of the green light emitting diode used for 1st embodiment of this invention. The perspective view of the foot lamp of 2nd embodiment of this invention. The figure which shows the specification state of the illuminating device of 1st embodiment of this invention, and the foot lamp of 2nd embodiment. Wavelength characteristics chart of melatonin secretion suppression by light reported by Brainard et al. A transmission characteristic diagram of the human eyelid reported by Moseley MJ et al.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Illuminating device 7 ... Nightlight 9.10 ... Fluorescent lamp 12 ... Footlight

Claims (4)

An indoor lighting device that irradiates only a spectral component mainly in a wavelength range from 500 nm to 580 nm. A light source mainly having only a spectral component in a wavelength range from 500 nm to 580 nm;
An instrument body for storing a light source;
An indoor lighting device comprising: With a light source;
A nightlight mainly having only a spectral component in a wavelength range from 500 nm to 580 nm;
A fixture body that houses the light source and nightlight;
An indoor lighting device comprising: A light source mainly having only a spectral component in a wavelength range from 500 nm to 580 nm;
An instrument body for storing a light source;
A human sensor that turns on the light source when human motion is detected:
An indoor lighting device comprising:

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