JP2019102441A - Lighting device and lighting fixture - Google Patents

Abstract

To provide a lighting device or the like capable of improving sleep of a user by effectively enhancing emotions of the user and guiding the user to a meditation state.SOLUTION: A lighting device comprises: a lighting circuit disposed to supply a current to a light source unit; and a control circuit configured to perform lighting control on the lighting circuit. The lighting control includes sleep induction control. When performing the sleep induction control, the control circuit controls the lighting circuit in such a manner that a value of the current to be supplied from the lighting circuit to the light source unit is changed to be increased and decreased. In a case where a period to perform the sleep induction control is divided into multiple phases, an average value of currents supplied from the lighting circuit to the light source unit in the first phase is greater than an average value of currents supplied from the lighting circuit to the light source unit in the second phase. In the end of the sleep induction control, a value of the current to be supplied from the lighting circuit to the light source unit is controlled into a predetermined value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the field of lighting, and more particularly to a lighting device and a lighting device capable of improving the sleep of a user.

  According to a World Health Organization survey, 27% of people have sleep problems. This problem is rapidly advancing in China, and the pace of life is fast and the stress of life is more pronounced in a society. According to the latest findings, 35% to 42% of people in China suffer from sleep problems. Conventional solutions, for example, take sleep inducers, but have not completely solved this problem.

  In recent years, various methods have been proposed for improving the user's sleep with sounds and odors. However, none of the currently proposed methods have yet met the needs of people with insomnia.

  In view of this, the present invention provides a lighting device and a luminaire that can improve the sleep of the user.

  According to one aspect of the present invention, there is provided a lighting device for lighting at least one light source unit, the lighting device comprising: a lighting circuit arranged to supply a current to the light source unit; And a control circuit disposed to perform light adjustment on the light source unit by performing light adjustment control, the light adjustment control includes sleep induction control, and the lighting is performed when the sleep induction control is performed. The control circuit controls the lighting circuit so that the value of the current supplied from the circuit to the light source unit increases and decreases, and the period during which the sleep induction control is performed is divided into a plurality of sections The average value of the current supplied from the lighting circuit to the light source unit in the previous section is larger than the average value of the current supplied from the lighting circuit to the light source unit in the rear section , The value of the current supplied from the lighting circuit when the sleep induction control end to said light source unit is controlled to a predetermined value.

  According to another aspect of the present invention, there is provided a lighting apparatus as described above, and a lighting apparatus including the at least one light source unit.

  According to research, emotional instability is a factor that causes sleep problems. Using the lighting device and the lighting apparatus of the present invention to effectively improve the user's emotions and bring the user into a meditation state by changing the brightness of light emitted from the light source unit and gradually reducing the intensity. Can effectively improve sleep.

FIG. 1 is a view showing the configuration of a lighting device and a lighting fixture in a third embodiment of the present invention. FIG. 2 is a diagram showing an example of a specific waveform of current supplied from the lighting circuit to the light source unit in the first embodiment of the present invention. FIG. 3 is a diagram showing an example of a specific waveform of current supplied from the lighting circuit to the light source unit in the first embodiment of the present invention. FIG. 4 is a diagram showing an example of a specific waveform of current supplied from the lighting circuit to the light source unit in the first embodiment of the present invention. FIG. 5 is a diagram showing an example of specific time setting of the current supplied from the lighting circuit to the light source unit in the first embodiment of the present invention. FIG. 6 is a diagram showing an example of specific time setting of the current supplied from the lighting circuit to the light source unit in the first embodiment of the present invention. FIG. 7 is a view showing the relationship between the user's feeling of sleep onset, breathing frequency and sleep induction control execution time obtained by the test. FIG. 8 is a view showing the configuration of the lighting device and the lighting fixture in the third embodiment of the present invention. FIG. 9 is a view showing a specific installation position and an irradiation direction of the light source unit and the second light source unit when the lighting fixture is a hanging illumination. FIG. 10 is a view showing specific installation positions and irradiation directions of the light source unit and the second light source unit when the lighting fixture is a floor stand.

  Hereinafter, exemplary embodiments, features and aspects of the present invention will be described in detail with reference to the drawings. The drawings included in and forming a part of the specification illustrate, together with the specification, exemplary embodiments, features, and aspects of the present invention and are provided to illustrate the principles of the present invention. The same reference numerals in the drawings indicate elements having the same or similar functions. Aspects of the embodiments are illustrated in the drawings and need not be drawn to scale unless otherwise indicated.

  The term "exemplary" is used herein to mean "serving as an example, example or illustration." Any embodiment described herein as "exemplary" is not to be construed as preferred or advantageous over other embodiments.

  Also, in the following description of the specific embodiments, numerous specific details are set forth in order to provide a better description of the present invention. Those skilled in the art should understand that, regardless of these specific details, the present invention may be practiced as well. In some embodiments, methods, means, elements and circuits well known to those skilled in the art are not described in detail to clarify the spirit of the present invention.

Example 1
FIG. 1 shows a luminaire according to a first embodiment of the present invention. The lighting apparatus 1 includes a lighting device 2 and a light source unit 3. The lighting device 2 supplies a current to the light source unit 3 to light the light source unit 3. The lighting device 2 is a control circuit that performs dimming on the light source unit 3 by performing dimming control on the lighting circuit 21 and the lighting circuit 21 for receiving electric power from the external power supply 4 and supplying current to the light source unit 3 Including 31.

  The power supply 4 may be an AC power supply such as a commercial power supply, or may be a DC power supply such as a battery. The configuration of the lighting circuit 21 differs depending on the type of the power supply 4. When the power supply 4 is an AC power supply, the lighting circuit 21 may include a rectifying and smoothing circuit or a power conversion circuit. The rectifying and smoothing circuit may include a rectifying circuit and a smoothing capacitor. Preferably, the rectifier circuit may include a diode bridge. The rectifier circuit is provided to perform full-wave rectification on AC power supplied from an AC power supply. The smoothing capacitor is provided to perform smoothing (removal of ripples) on a pulsating voltage (pulsating current) obtained by full-wave rectifying the rectification circuit. The power conversion circuit may include a step-down chopper circuit (step-down DC / DC converter), and may convert the power output from the rectifying and smoothing circuit to output a current necessary for the light source unit 3 to operate. When the power supply 4 is a DC power supply, the lighting circuit 21 includes, for example, a DC / DC converter of a step-up chopper circuit, a step-down chopper circuit or a step-up / step-down chopper circuit. It may output the current necessary to operate.

  The control circuit 31 performs switch control on a switch connected in series to the light source unit 3 in the lighting circuit 21 and changes the value of the current output from the lighting circuit 21 to the light source unit 3 to control light adjustment to the light source unit 3. You may go.

  The light source unit 3 may include one or more series and / or parallel connected LEDs (light emitting diodes). The intensity of light emitted from the light source unit 3 and the magnitude of the current value supplied from the lighting circuit 2 to the light source unit 3 are in direct proportion, and when the current value supplied from the lighting circuit 21 to the light source unit 3 is smaller than a predetermined value, the light source unit 3 does not emit light.

  Here, the above content is only an exemplary description of the configuration of the lighting device and the lighting apparatus of the present invention. The configuration of the lighting device and the lighting fixture of the present invention is not limited to the above contents, and those skilled in the art may use any suitable type of configuration known.

  Hereinafter, the sleep induction control which is the point of the present invention will be described. When a corresponding instruction from the outside is received or a predetermined condition is satisfied (for example, the user reaches a predetermined time), the value of the current supplied from the lighting circuit 21 to the light source unit 3 increases and decreases. As performed, the control circuit 31 can control the lighting circuit 21. If the period for performing sleep induction control is divided into a plurality of sections, the current supplied from the lighting circuit 21 in the previous section to the light source unit 3 The average value of the current is larger than the average value of the current supplied from the lighting circuit 21 to the light source unit 3 in the rear section, and the value of the current supplied from the lighting circuit 21 to the light source unit 3 at the end of sleep induction control is controlled to a predetermined value. Be done.

  As verification by the actual user test, by making the current value increase and decrease change, it causes the light and dark change of the light emitted from the light source unit, stabilizes human emotions, and enters the sleep state more easily You can In addition, the average value of the current supplied from the lighting circuit 21 to the light source unit 3 continues to be reduced, and the user is maintained by reducing the value of the current to a relatively low predetermined value at the end of sleep induction control. It is possible to avoid waking up surprised by the sudden change of light intensity when it is already in a light sleep state.

  Examples of the current supplied from the lighting circuit 21 to the light source unit 3 at the time of sleep induction control are as shown by FIGS. The horizontal axes of FIGS. 2, 3 and 4 indicate time, the origin is the time to start the execution of sleep induction control, and the vertical axis indicates the current value, which is shown as a ratio to the maximum current value. In FIG. 2, the current changes sinusoidally, and the maximum value and the minimum value of the current of the later sine waveform are both smaller than the maximum value and the minimum value of the previous sine waveform, and after the minimum value reaches 0, it is the minimum If the value remains zero, the maximum value of the current of each waveform continues to decrease until the current value drops to zero.

  In FIG. 3, the current changes sinusoidally, and the minimum value of the current of each waveform maintains zero, and the maximum value of the current of each waveform continues to decrease until the current value drops to zero.

  In FIG. 4 the current likewise varies sinusoidally, but the variation pattern differs in three sections. In the first section, the minimum value of the current of each waveform maintains 10%, and the maximum value continues to decrease. Within the second interval, the maximum and minimum values of the current of each waveform both decrease until the minimum value drops to 0 with respect to the previous waveform. In the third section, the minimum value of the current of each waveform is maintained at 0, and the maximum value of the current of each waveform continues to decrease until the current value drops to 0.

  As can be seen by comparing the examples of FIGS. 2, 3 and 4, the current shown by FIG. 2 can further intensify the light emitted from the light source unit 3 at the same time as sleep induction control, It is not so clear as in FIGS. 3 and 4 and the light emitted from the light source unit 3 in the late stage of sleep induction control is weak. Although the current shown by FIG. 3 can draw the user's attention more effectively by causing the strongest light-dark change, the time period in which the light source unit 3 is turned off appears from the previous period, which is inconvenient and the previous period The change in brightness is too large and may stimulate some users. The current shown by FIG. 4 has similar disadvantages to the example of FIG. 3, but is slightly improved over the example of FIG.

  When executing the sleep induction control so that the control program corresponding to FIGS. 2 and 3 is stored in advance in the control circuit 31 and the lighting circuit 21 supplies the current corresponding to the light source unit 3, the control program It may be performed automatically. Furthermore, the user can operate the lighting device 1 such that the user selects the waveform of the current supplied at the time of sleep induction control among the current waveforms shown in, for example, FIGS. May be provided. For example, the current waveform shown in FIG. 2 is stored in advance as a “slow” pattern, the current waveform shown in FIG. 3 is stored in advance as a “strong” pattern, and the current waveform shown in FIG. You may memorize. The user may select one of the patterns according to his / her needs.

  The user may further edit the current waveform with the controller, and set a desired waveform shape, maximum value and minimum value, time length, and the like. After the user completes the editing, the control circuit 31 controls the lighting circuit 21 based on the pattern in which the user editing is completed so that the current output from the lighting circuit 21 matches the current waveform in which the user editing is completed. It is also good.

  As mentioned above, the current waveform shown by FIGS. 2-4 is an illustration only, and this invention is not limited to this. In each of FIGS. 2 to 4, the current may change sinusoidally, and thereby the intensity of light emitted from the light source unit may be changed smoothly to weaken the stimulus given to the user due to the rapid change of light. However, the current supplied from the lighting circuit 21 to the light source unit 3 may be changed to increase and decrease in other waveform shapes (for example, triangular wave shape, trapezoidal wave shape, etc.). Also, the present invention does not require that the waveform shape of the current be the same throughout the sleep induction control period. For example, the current may be designed to change in the shape of a triangular wave in the early period of sleep induction control, and may be designed to change in the shape of sine wave in the late period of sleep induction control.

  In Figures 2-4, the current value of each waveform continues to drop relative to the previous waveform. However, the present invention is not limited to this, and the current may be provided so as to repeat a plurality of cycles with the same waveform and then decrease.

  In FIGS. 2 to 4, variation ranges of various currents such as (100% to 50%), (100% to 0%), and (100% to 10%) are illustrated. However, the present invention is not limited to this. As well known to those skilled in the art, the larger the current change width, the clearer the light / dark change of the light of the light source unit can be drawn and the user's attention can be drawn, but at the same time the light / dark change of the light of the light source unit is too large Stimulate the user. Therefore, the change width of the current may be selected according to the actual situation.

  Hereinafter, the setting of the time length of the current change will be described with reference to FIGS. As shown in FIGS. 5 and 6, when performing sleep induction control, even if the induction time zone in the change of the current supplied from the lighting circuit 21 to the light source unit 3 is set within the range of 3 seconds to 3.75 seconds. Preferably, the induction time is the time when the current increases from the minimum to the maximum (as shown by FIG. 6) or the time when the current increases from the minimum to the maximum and then decreases to the minimum (FIG. 5). (Indicated by).

  This is provided based on the breathing frequency of the person. A person's breathing frequency is usually 16 to 20 times / minute. As a test verification, when a person senses a change in light and dark, the time to complete an unconsciously one breath is usually increased from the time the light changes from dark to bright (the current increases from the minimum value to the maximum value) For example, after the current increases from the minimum value to the maximum value, for example, a time zone, for example, the time zone in which the current value is 0% to 100% as shown in FIGS. It is adjusted to be the same as the time zone for reducing to the minimum value, for example, the time zone in which the current value shown by FIGS.

  When the time for light to change from dark to light or the time for light to change from dark to light and again for 3 seconds, it is possible to lead the person's breathing frequency to 20 / min. When the time for light to change from dark to light or the time for light to change from dark to light and again dark is 3.75 seconds, the respiration frequency of a person can be derived to 16 times / minute.

  Therefore, by setting the induction time zone in the change of the current supplied from the lighting circuit 21 to the light source unit 3 within the range of 3 seconds to 3.75 seconds, the human breathing frequency is within 16 to 20 times / minute. The value may be led and stabilized to further enhance the sleep induction effect.

  In addition, in order to further enhance the sleep induction effect, the color temperature of the light emitted by the light source unit 3 may be set to 3000 K or less. As is well known to those skilled in the art, a person has different psychological sensations for light of different color temperatures, and different color temperatures to be applied to different scenes are identified as verification by test. For example, light with a color temperature of 6200 K makes people stay awake, and is usually applied to scenes such as learning, breakfast, lunch, getting up, light with a color temperature of 5000 K usually produces food, work, clothes, etc. Applied to the scene, color temperature is applied to the scene such as gathering, etc, the light of 3500K is usually applied to the scene such as dinner, reading etc, the color temperature is applied to the scene such as Is usually applied to scenes such as before bedtime. By setting the color temperature of the light emitted by the light source unit 3 to 3000 K or less, the user can be more easily put in a relaxed state, and the sleep induction effect can be further enhanced.

  The inventor has tested the user's actual feel for the luminaire of the present invention. The test results are shown by FIG. As the sleep induction control execution time is extended, the user's drowsiness is enhanced and the user's breathing frequency is reduced. When the sleep induction control execution time is extended to a certain length, the user can almost certainly enter the sleep state smoothly. This fully demonstrates the effectiveness of the lighting device and lighting device of the present invention for improving sleep. According to the test result, the sleep induction control time may be set to 30 minutes or more.

  In addition, the user provides an execution time for sleep guidance control based on the user's own experience of using the operation unit, and after the sleep guidance control is finished, the light source unit 3 is completely turned off or keeps on with low brightness etc. It may be provided in

(Example 2)
The second embodiment differs from the first embodiment in that the induction time zone of the current supplied from the lighting circuit 21 to the light source unit 3 during sleep induction control is not constant but gradually extends. Assuming that the total execution time of sleep induction control is 30 minutes, the induction time zone is 5 minutes with 3 seconds, and the induction time zone is 3.16 seconds with 5 minutes, and the induction time zone is 3.33 seconds with 5 minutes It may be provided to execute for 5 minutes with 3.53 seconds for the induction period and 10 minutes for 3.75 seconds for the induction period, and then to terminate the sleep induction control.

  Further, a transition time zone may be provided between set values of different induction time zones, and the induction time zone may be gradually extended within the transition time zone. For example, a transition time zone of 1 minute is provided between the induction time zone of 3 seconds and the induction time zone of 3.16 seconds, and within the transition time zone, the induction time zone follows a certain length, for example 3. It gradually extends from 3 seconds to 3.16 seconds according to the order of 04 seconds, 3.08 seconds, 3.12 seconds, 3.16 seconds.

  As mentioned above, an induction period of 3 seconds can lead a person's respiratory frequency to 20 / min and an induction period of 3.16 seconds can lead a person's respiratory frequency to 19 / min An induction period of 3.33 seconds can lead a person's respiratory frequency to 18 breaths / minute, and an induction period of 3.53 seconds can lead a person's respiratory frequency to 17 breaths / minute, 3 An induction period of 75 seconds can lead a person's respiratory frequency to 16 breaths / minute.

  As verified by the test, a person is in a lower respiratory frequency as they are in a relaxed state, and in a sleep state, the respiratory frequency is usually a minimum value of 16 / min. By gradually extending the induction period as described above, the user's breathing frequency is gradually reduced to allow the user to enter sleep more quickly.

  The above contents are merely examples, and the present invention is not limited thereto. The time of each step may be provided arbitrarily, and may be the same or different. The transition time zone may or may not be provided. A change pattern of the length of the transition time zone and the induction time zone may be provided arbitrarily. Further, the present invention is not limited to setting all the five induction time zones, but may include only a part of them. For example, the induction time zones may be sequentially 3 seconds, 3.33 seconds, 3.75. It may be set to seconds.

(Example 3)
A luminaire 11 according to an embodiment of the invention is shown in FIG. Unlike the first embodiment, the luminaire 11 further includes a second light source unit 5. The second light source unit 5 is turned on in response to the current supplied from the lighting circuit 21. The color temperature of the light of the second light source unit 5 may be set higher than that of the light source unit 3. Thus, by accommodating the light guiding unit 3 capable of performing sleep guidance control in one lighting fixture 11 and having a low color temperature and the second light source unit 5 having a high color temperature as general lighting, it is possible to perform one lighting Sleep guidance and general lighting can be realized at the same time using the lighting fixture 11, and space can be saved effectively.

  In order to reduce the influence on the sleep guidance control of the light source unit 3 by the second light source unit 5, the second light source unit 5 is provided in the light-off state when the light source unit 3 performs the sleep guidance control, The illumination directions of the light source unit 3 and the second light source unit 5 may be set to different directions, as shown by FIG.

  For example, as shown in FIG. 9, when the lighting fixture 11 is attached to the ceiling hanging light, the light source unit 3 is attached to the outer periphery of the lighting fixture 11, and the radiation direction of the light source unit 3 is set upward, ie, in the ceiling direction. It is conceivable to attach the second light source unit 5 to the central part of the lighting fixture 11 and set the irradiation direction of the second light source unit 5 downward, that is, in the floor direction.

  As shown in FIG. 10, when the luminaire 11 is a floor stand, the light source unit 3 is attached to the outer periphery of the luminaire 11, and the irradiation direction of the light source unit 3 is set downward, that is, the floor direction. It is conceivable to attach the unit 5 to the central part of the luminaire 11 and to set the irradiation direction of the second light source unit 5 upward, that is, toward the ceiling.

  By setting the irradiation direction of the light source unit 3 as described above, when the user lays on the bed and tries to go to bed, it is possible to more clearly see the change in light and dark of the light emitted from the light source unit 3. The effect of the sleep induction control of unit 3 can be intensified.

  The setting positions of the light source unit 3 and the second light source unit 5 and the setting of the irradiation direction are merely examples, and the present invention is not limited thereto. The installation positions and the irradiation directions of the light source unit 3 and the second light source unit 5 may be set according to the specific configuration and the installation position of the lighting fixture 11.

  Although the embodiments of the present invention have been described above, the above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is for the purpose of best explaining principle of each embodiment, practical application or technical improvement of technology in the market, or for one skilled in the art to understand each embodiment disclosed by the text. It is.

Claims (10)

A lighting device for lighting at least one light source unit, comprising:
The lighting device is
A lighting circuit arranged to supply a current to the light source unit;
And a control circuit disposed to perform light adjustment on the light source unit by performing light adjustment control on the lighting circuit.
The dimming control includes sleep induction control,
When performing the sleep induction control, the control circuit controls the lighting circuit such that the value of the current supplied from the lighting circuit to the light source unit increases and decreases.
When the period for performing sleep induction control is divided into a plurality of sections, the average value of the current supplied from the lighting circuit to the light source unit in the previous section is the average of the current supplied from the lighting circuit to the light source unit in the rear section The value of the current supplied from the lighting circuit to the light source unit at the end of the sleep induction control is controlled to a predetermined value, which is larger than the value. The lighting device according to claim 1, wherein when performing the sleep induction control, the value of the current supplied from the lighting circuit to the light source unit changes in a sine wave form in at least a part of the section. When performing the sleep induction control, the induction time zone in the change of the current supplied from the lighting circuit to the light source unit is in the range of 3 seconds to 3.75 seconds, and the induction time zone is the minimum current The lighting device according to claim 1 or 2, which is a time zone increasing to the maximum value or a time zone decreasing to the minimum value after the current increases from the minimum value to the maximum value. When performing the sleep induction control, the control circuit controls the lighting circuit such that any two adjacent sections of the plurality of sections satisfy any one of the following two conditions: Do,
The maximum value and the minimum value of the current supplied from the lighting circuit to the light source unit in the previous section are both greater than the maximum value and the minimum value of the current supplied from the lighting circuit to the light source unit in the rear section, and The maximum value of the current supplied from the lighting circuit to the light source unit is larger than the maximum value of the current supplied from the lighting circuit to the light source unit in the rear section, and is supplied from the lighting circuit in the front section and the rear section to the light source unit The lighting device according to any one of claims 1 to 3, wherein the minimum value of the current flow is the same. The lighting device according to claim 3, wherein the induction time zone extends stepwise within a range of 3 seconds to 3.75 seconds in a period in which the sleep induction control is performed. The lighting device according to claim 5, wherein the induction time zone in the entire sleep induction control includes a plurality or all of 3 seconds, 3.16 seconds, 3.33 seconds, 3.53 seconds, and 3.75 seconds. The lighting device according to any one of claims 1 to 6, wherein the predetermined value is a value which can not light the light source unit. A lighting fixture comprising the lighting device according to any one of claims 1 to 7, and the at least one light source unit. The light fixture according to claim 8, wherein the color temperature of the at least one light source unit is 3000 K or less. The luminaire further comprises a second light source unit which receives the current supplied from the lighting circuit and whose color temperature is higher than the color temperature of the at least one light source unit,
The lighting device according to claim 8, wherein an irradiation direction of the at least one light source unit is different from an irradiation direction of the second light source unit.

Images