JP6340648B2 - Lighting system - Google Patents

Description

  The present invention relates to an illumination system that mainly realizes an illumination environment suitable for sleeping.

  Conventionally, it is known that the sleep promoting hormone “melatonin” secreted from the brain at night is suppressed by light, and a lighting device that promotes a comfortable sleep by reducing the secretion suppression is known ( For example, see Patent Document 1). In this type of lighting device, since the secretion of melatonin is suppressed by light in the color temperature range of 3000K or more, when the user goes to bed, light is irradiated in the low color temperature region of 3000K or less, thereby suppressing melatonin secretion. To reduce.

  In addition, light-colored orange and red LEDs are used to illuminate pink-orange light, and the dimming rate is gradually adjusted and darkened at bedtime to lower the user's arousal level and promote an increase in melatonin secretion. There is known a lighting device that promotes a good sleep (see, for example, Patent Document 2).

JP 2007-029336 A JP 2013-191512 A

  However, the sleep wake-up rhythm of a person is not only different for each user, but can be changed for each user according to daytime activities. In the lighting device, since the influence of daytime activities on the sleep wakefulness rhythm of a person is not considered, an appropriate lighting environment is not always obtained in the period before and after going to bed.

  This invention solves the said subject, and it aims at providing the lighting system which can implement | achieve the appropriate lighting environment in the period before and behind bedtime according to the activity during the daytime.

  In order to solve the above-described problems, the present invention provides an illumination system including an illumination device in which a dimming rate or color temperature of illumination light is variable, and a control unit that controls lighting of the illumination device. A measurement unit that measures the concentration level during the day and outputs an input signal indicating the concentration level, and a control that sets a lighting pattern of the lighting device before and after the user goes to bed based on the input signal received from the measurement unit And an arithmetic unit that generates a signal.

  According to the present invention, since the dimming rate and the color temperature during sleep are controlled as one index of the user's daytime concentration level, an appropriate lighting environment in the period after going to bed can be realized.

The conceptual diagram which shows the example of application of the illumination system which concerns on one Embodiment of this invention. The block block diagram of the illumination system. (A) is a figure which shows the fall of the concentration degree with time, (b) is a figure which shows the change with time of the concentration degree by concentration degree maintenance control. The figure which shows the example of the lighting pattern in the said illumination system. The conceptual diagram which shows the application example of the illumination system which concerns on the modification of the said embodiment. The figure which shows the example of a display of the terminal used with the said illumination system. The figure which shows the example of a display of the terminal used with the said illumination system.

  An illumination system 10 according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the lighting system 10 of the present embodiment relates to a lighting device 1 (ceiling light 1a in the illustrated example) provided mainly in a bedroom BR in a user M's residence, and a lighting pattern of the ceiling light 1a of the user M. A terminal SP that transmits input information to the lighting device 1.

  Lighting of the ceiling light 1a may be controlled by a control signal output from a dedicated light controller LC installed in the bedroom BR, or may be controlled by a control signal transmitted from the terminal SP. Further, the control signal may be output from the terminal SP to the ceiling light 1a via the light controller LC. In addition, the illuminating device 1 of this embodiment may be implement | achieved as illuminating devices other than the ceiling light 1a, and should just irradiate illumination light around the sleeping position (bed BD) of the user M in bedroom BD. . The illuminating device 1 may be implemented as, for example, a base light, a down light, a desk light, a bracket, or the like other than the illustrated ceiling light.

  The terminal SP is an information communication terminal such as a smartphone or a tablet terminal carried by the user M, and is carried by the user M and carried to the workplace WP. The terminal SP is connected to the server 11 on the cloud via the Internet IT. In addition, the lighting system 10 includes a lighting device 1 (desk light 1b in the illustrated example) installed in the workplace WP. In addition to the desk light 1b, a general-purpose base light 1c that illuminates the inside of the workplace WP is installed in the workplace WP. In the illumination system 10, a concentration degree measuring unit, which will be described later, is incorporated in the illumination device 1 that can identify the individual user M and acquire the biological information thereof. As the lighting device 1 in which the measuring unit is incorporated, a desk light 2b arranged on a personal desk is more suitable than a base light 1c that illuminates a wide space where many people are present.

  As shown in FIG. 2, the ceiling light 1a transmits and receives a predetermined communication signal between the light source 2a that emits illumination light, the control unit 3a that controls lighting of the light source 2a, and the terminal SP (or the controller LC). The transmission / reception part 4a and the sensor part 5a which detects presence and operation | movement of a surrounding person are provided. The ceiling light 1a further includes an optical member that is provided in the light emission direction of the light source 2a to control the light distribution, and a diffusion member (cover) that diffuses and emits the light emitted from the optical member (any) (Not shown).

  The light source 2a is composed of LED groups 21 and 22 each composed of a plurality of LEDs. Among these, one LED group 21 is composed of LED chips that emit light of relatively high color temperature, and the other LED group 22 is composed of LED chips that emit light of relatively low color temperature. The In addition, the LED group may be a fluorescent lamp type LED lighting device in which LEDs are built.

  The LED of the light source 2a is configured as an LED package by covering with a wavelength conversion member that converts the wavelength of light emitted from the LED chip. For example, a GaN-based blue LED chip that emits blue light is used as the LED chip, and the wavelength conversion member can emit light of daylight white or light bulb color to the translucent resin material for sealing. For this purpose, a phosphor mixed with the phosphor is used. In addition, the color temperature of the light which the light source 2 irradiates should just be a daylight color-light bulb color (color temperature 7100K-2600K). For the LED group 21 that emits light having a relatively high color temperature, for example, an LED chip that emits daylight color light having a color temperature of about 6500K is preferably used. For the LED group 22 that emits light having a relatively low color temperature, for example, an LED chip that emits light bulb color light having a color temperature of about 2700K is preferably used. By controlling the dimming ratio of the LED group 21 and the LED group 22, the light source 2 can appropriately change the color temperature of the irradiated light.

  The control unit 3a performs dimming control of each light source 2a by, for example, PWM (Pulse Width Modulation) control or analog dimming control. The control unit 3a is realized by the microcomputer 31. The dimming ratio means the ratio of luminance to the maximum luminance of each light source 2a. For example, the dimming ratio when the control unit 3 performs dimming control of the light source 2a by PWM control is the duty ratio of the PWM signal. It is determined by the ratio. In addition, the control unit 3 includes a timer 32 that measures time, and a memory 33 that stores data such as a dimming ratio of the light source 2a with respect to the time counted by the timer 32, past illumination information, and the like.

  The transmission / reception unit 4a performs communication using infrared communication, Bluetooth (registered trademark), ZigBee (registered trademark), which is one of WPAN (Wireless Persona1 Area Network) standards, and other communication methods. In addition, the illumination light communication which superimposes a communication signal on illumination light by converting the lighting frequency of the light source 3 as the transmission / reception part 4 may be used.

  The sensor unit 5a is configured by, for example, a motion sensor, and detects body movements during sleeping such as a sleeping person (user M (see also FIG. 1)) and detects the depth of sleep of the user M. Further, the sleep time of the user M can be detected from the movement of the user M. The sensor 5 may have a separate structure from the lighting device 1.

  The terminal SP includes an input unit 12 for setting a lighting mode of the ceiling light 1a at bedtime, a display unit 13 for displaying input contents, and a transmission / reception unit 14 (terminal transmission / reception unit) for communicating with the ceiling light 1a. And comprising. The input unit 12 is an input interface and includes, for example, a push button switch, a touch panel, and the like. The transmission / reception unit 14 communicates with the transmission / reception unit 4 on the ceiling light 1a side using a communication method such as infrared communication. In addition, the transmission / reception unit 14 is connected to the Internet IT by a wireless LAN such as WiFi (registered trademark), a wide area high-speed Internet such as WiMAX, or a communication method conforming to various communication standards such as CDMA2000, W-CDMA, and LEE. Communicate with. In addition, the terminal SP includes a control unit 15 that includes a CPU 15a, a timer 15b, and a memory 15c that control each of the above components.

  The desk light 1b of the workplace WP includes a light source 2b that emits illumination light, a control unit 3b that controls lighting of the light source 2b, and a transmission / reception unit that transmits and receives a predetermined communication signal between the terminal SP (or the controller LC). 4b. The desk light 1b includes a measuring unit 6b that measures the concentration level of the user M during the day and outputs an input signal indicating the concentration level. The control unit 3b includes a microcomputer, a memory, a timer, and the like, similar to the ceiling light 1a. The input signal measured by the measuring unit 6b is transmitted from the transmitting / receiving unit 4b to the transmitting / receiving unit 14 of the terminal SP. And in terminal SP, CPU15a (arithmetic part) produces | generates the control signal which sets the lighting pattern of the ceiling light 1a before and after bedtime of the user M based on the received input signal.

  In addition, the desk light 1b includes a concentration level maintaining control unit 34 that changes the dimming rate or the color temperature in the short term according to the user's concentration level as one configuration of the control unit 3b. As shown in FIG. 3 (a), an experiment was conducted in which a certain healthy person was engaged in intellectual production activities for a predetermined time. As a result, in many subjects, the concentration decreased during continuous work for 2 hours. It was done. Further, as shown in FIG. 3B, when a working time of about 2 hours is assumed, the concentration maintenance control for changing the light control rate or the color temperature in the short term is performed three times, and the subject is stimulated with light. By giving, it was shown that the fall of the concentration degree was suppressed over the working time of 2 hours.

  By this concentration level maintenance control, the user M can reduce the concentration level and can maintain a higher concentration level. As the light stimulus for suppressing the reduction of the concentration level is received, the concentration level of the user M is maintained and the user M is engaged in the work with a high concentration level, but the fatigue of the user M is accumulated. Because of this, deep sleep is necessary on such days. Therefore, in the illumination system 10, the number of times of the light stimulation is handled as one index of the degree of concentration. For example, if the daily work time is 8 hours and the concentration reduction is suppressed for 80% or more of the total work time, the concentration degree is “high”, and the concentration is 50% or more. “Medium” is set, and the concentration level of less than 50% is set to “Low”. The measuring unit 6b transmits this concentration level as an input signal to the terminal SP. Thus, by measuring the concentration level from the time when the concentration level maintenance control is performed, the concentration level can be easily quantified.

  Note that the degree of concentration may be measured based on the number of times the degree-of-concentration maintenance control is performed. In this case, for example, if the number of times the concentration level maintenance control is performed per work time per day is 12 times or more, the concentration level is “high”, 8 times or more is set to “medium”, and less than 7 times. Is the concentration level “low”. In this way, the degree of concentration can be easily measured.

  The CPU 15a (arithmetic unit) of the terminal SP that has received the input signal from the measuring unit 6b generates a control signal for setting the lighting pattern of the ceiling light 1a before and after the user M goes to bed based on the input signal. The generation of the control signal in the CPU 15a is performed by executing a predetermined application downloaded to the memory 33. And in the ceiling light 1a which received the said control signal from the transmission / reception part 14 of the terminal SP via the transmission / reception part 4, the control part 3a is light of the high color temperature and low color temperature of the light source 2 based on the received control signal. Each of the LED groups 21 and 22 that emit light is determined, and the light source 2a is controlled to light for a predetermined time according to each input signal according to the time of the timer 32.

  FIG. 4 shows a lighting pattern of the ceiling light 1a. When the input signal indicates the high degree of concentration, it is necessary to prompt the user M to fall asleep. Therefore, the light control rate (rH) is relatively low and the color temperature (tH) is low. For example, by setting the light control rate to 30% or less and the color temperature to 3000 K or less, the user M's melatonin secretion is promoted. Further, the irradiation time by the low light control / low color temperature is set to a relatively long time from the lighting start time T1 before bedtime to the lighting end time T2H before bedtime. This promotes the secretion of melatonin by the user M who goes to bed, and the user M who works at a high concentration level during the day can sleep comfortably. In addition, by shortening the gradual increase light period during which the gradual increase light is emitted during the period from the sleep control lighting time T2H to the extinguishing time T3 (lighting period after going to bed), consumption of unnecessary power after going to bed is suppressed.

  Further, when the input signal indicates the degree of concentration “low”, the light control rate (rL) is relatively high and the color temperature (tL) is high. For example, the light control rate is set to 70% or more, and the color temperature is set to 3000K or more. As a result, an illumination environment in which reading, etc. is easy for the user M who has a low degree of concentration during the day at bedtime is created. On the other hand, the user M is prompted to fall asleep by shortening the irradiation time from the lighting start time T1 before bedtime to the lighting end time T2L before bedtime. Further, the gradually increasing light period from the lighting end time T2L before bedtime to the turn-off time T3 is lengthened. As described above, when the lighting end time T2L before going to bed approaches, the user M can fall asleep comfortably by lowering the dimming rate and the color temperature and increasing the gradually increasing light period. Further, when the input signal indicates “medium” concentration, the dimming rate (rM) and the color temperature (tM) are set to an intermediate level between the two lighting patterns.

  Thus, since the lighting system 10 controls the dimming rate and the color temperature during sleep as one index of the daytime concentration of the user M, it is possible to realize an appropriate lighting environment in the period before and after going to bed. it can.

  In addition, the control unit 3a does not necessarily determine the lighting pattern depending only on the control signal from the terminal SP. Preferably, the lighting end time T2 before bedtime and the turn-off time T3 are detected by the sensor unit 5a. It changes suitably according to the user's M sleep state made. Thereby, a more suitable illumination environment can be realized by the period before and after sleeping.

  In the lighting system 10, a calculation unit that generates a control signal for setting the lighting pattern of each lighting device 1 from the degree of concentration of the user M is incorporated in a terminal SP (information equipment terminal) connected to the Internet IT. . Since the terminal SP is brought into both the bedroom BD and the workplace WP, it is accompanied by a special input operation or the like as an index for controlling the daytime concentration of the user M at the workplace WP in the lighting environment in the bedroom BR. And can be used easily.

  Next, an illumination system according to a modification of the above embodiment will be described with reference to FIGS. In the illumination system according to this modification, the measurement unit measures the degree of concentration from the biological signal of the user M. Specifically, as shown in FIG. 5, the daytime activity state of the user M is monitored by the camera 7 provided in the personal computer PC used in the workplace WP, and the biological signal of the user M is obtained from the activity state. Then, the measuring unit 6pc (see also FIG. 6) built in the personal computer PC measures the concentration degree from the obtained biological signal. As with the terminal SP, the personal computer PC further includes a CPU 3pc, a transmission / reception unit 4pc, an input unit 12pc including an interface such as a keyboard and a mouse, and a display unit 13pc such as a monitor.

  For example, the camera 7 captures the movement of the eyes of the user M facing the personal computer PC, and measures the degree of concentration of the user M from the ratio of the time during which the eyes of the user M are moving within a predetermined period. In addition, the concentration level of the user M can be measured from the work operation of the user M such as the number of operations of the input unit 12c.

  Further, when the user M is outdoors without the desk light 1b and the personal computer PC described above, the user M's biological body is counted by counting the number of steps of the user M using the acceleration sensor 5sp built in the terminal SP. It is also possible to collect the signals and measure the concentration level of the user M by the measuring unit 6sp. Further, the CPU 15sp (arithmetic unit) of the terminal SP may output an input signal by the operation of the user M.

  Further, when the terminal SP is a wearable terminal such as a watch-type terminal or a spectacle-type terminal, for example, a sensor for measuring a pulse rate (not shown) or a sensor for measuring an electroencephalogram is mounted on the terminal and the measured pulse rate is measured. The degree of concentration of the user M can also be measured from the number and brain waves. In addition, not only these but the arbitrary methods which can measure the biometric signal of the user M may be employ | adopted. In addition, a plurality of biological signals described above may be combined to calculate a concentration level. In this way, the measurement accuracy of the degree of concentration can be improved.

  Further, the calculation unit is not limited to the CPU 15 pc of the terminal SP, and may be placed in the server 11 on the cloud, for example. In this case, the arithmetic unit can output a control signal via the Internet IT and the terminal 11 to a control unit that controls lighting of a plurality of lighting devices 1 having different installation locations. For example, lighting devices (in the example shown, brackets 1d and downlights 1e) installed in hotel guest rooms GR1 and GR2 (see FIG. 5) correspond to the lighting system 10 as with the ceiling light 1a described above. And In this case, the user M can appropriately illuminate not only in the bedroom BR at home but also in a place before and after sleep using the concentration degree during the day as an index at any place where there is a lighting device compatible with this system, such as a lodging place. You can get the environment.

  Next, an illumination system according to another modification of the above embodiment will be described with reference to FIG. In the illumination system according to this modification, the measurement unit and the calculation unit described above are incorporated in the illumination device. Specifically, as illustrated in FIG. 7, the lighting device 1 f includes a sensor unit 5 f for acquiring the activity information of the user M, and a measurement unit that detects the degree of concentration of the user M from the acquired information of the sensor unit 5 f. 6f. In addition, a CPU 31f that functions as a calculation unit is incorporated in the control unit 3f that controls the lighting of the light source 2f. In addition, the illuminating device 1f also has the transmission / reception part 4f which communicates with terminal SP and transmits / receives the control information.

  The sensor unit 5f is, for example, a heat ray sensor, and acquires biological information such as movement and operation of the user M, respiration, and body temperature. The measurement unit 6f measures the degree of concentration of the user M using the information obtained by the sensor unit 5f as an input signal. Further, the CPU 31f determines the lighting pattern of the light source 2f based on the control signal output from the measuring unit 6f as shown in FIG.

  According to this configuration, the above-described lighting system 10 can be operated mainly by only the lighting device 1f, so that no network or inter-device communication is required, and a simple system can be designed. In addition, for example, during holidays, the concentration level of the user M who spends a lot of daytime in the bedroom BR shown in FIG. 1 can be measured, and in the period before and after sleep using the concentration level as an index. Appropriate lighting environment can be realized.

  Since the transmission / reception unit 14 of the terminal SP is connected to the server 11 via the Internet IT, the lighting system 10 can be connected to various networks and cloud systems. For example, information can be compared between other users. You can also refer to it. In addition, for example, a service for setting a target value and providing advice regarding lighting information such as setting the color temperature in the sleep control mode described above can be introduced.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. In the above-described embodiment, the configuration example in which the body movement of the user M is detected by the sensor 5 to determine the sleep and wake-up of the user M has been described. However, the sensor 5 is not necessarily limited to the motion sensor. The operation of M can also be detected. Moreover, in the said embodiment, although the structure which used LED for each light source was shown, it replaced with LED and the module comprised by solid light emitting elements other than LED, such as an organic EL element (OLED) or an inorganic EL element, was used. May be.

DESCRIPTION OF SYMBOLS 1 Illuminating device 1a Ceiling light 1b Desk light 11 Terminal 14 Transmission / reception part 15 Control part Transmission / reception part 16a Microcomputer (information extraction part)
2a, 2f Light source 3a, 3f Control unit 34 Concentration maintenance unit 6b, 6sp Measurement unit CPU calculation unit

Claims (8)

An illumination system comprising: an illumination device in which a dimming rate or color temperature of illumination light is variable; and a control unit that controls lighting of the illumination device,
A measurement unit that measures the concentration level of the user during the day and outputs an input signal indicating the concentration level, and sets a lighting pattern of the lighting device before and after the user goes to bed based on the input signal received from the measurement unit And an arithmetic unit that generates a control signal to perform the illumination system.   The lighting system according to claim 1, wherein the lighting pattern lowers the dimming rate or the color temperature when the degree of concentration indicated by the input signal is high. The lighting device includes a concentration maintenance control unit that changes the dimming rate or the color temperature in the short term according to the user's concentration,
The lighting system according to claim 1, wherein the measurement unit measures the concentration level according to the number of executions of the concentration level maintenance control.   The lighting system according to any one of claims 1 to 3, wherein the measurement unit measures the concentration degree from a biological signal of a user.   The lighting system according to claim 1, wherein the calculation unit outputs the input signal by a user operation.   The lighting system according to claim 1, wherein the calculation unit is incorporated in an information equipment terminal connected to the Internet.   The lighting system according to claim 6, wherein the calculation unit outputs the control signal via the Internet to a control unit that controls lighting of a plurality of lighting devices having different installation locations.   The lighting system according to claim 1, wherein the measurement unit and the control unit are incorporated in the lighting device.

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