JP2015162300A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly convenient lighting fixture with a low cost structure, which can shorten the sleep onset latency and prompt pleasant sleep.SOLUTION: A lighting fixture 10 includes a main light source 29, a sub-light source 30 and a control unit. The main light source 29 generates light containing blue light. The sub-light source 30 generates light in which the ratio of blue light is smaller than that of the main light source 29. The control unit lowers the optical output of the whole lighting fixture, including the light of the main light source 29 and the light of the sub-light source 30, gradually by lowering the brightness of the main light source 29 from the lighting state of the main light source 29 and sub-light source 30, and increasing the ratio of the light of the sub-light source 30 in the optical output of the whole lighting fixture.

Description

  Embodiments described herein relate generally to a lighting apparatus that performs lighting suitable for falling asleep.

  Conventionally, there is a luminaire using a plurality of LEDs having different color temperatures as a light source. Such a luminaire is configured to manually adjust the color temperature to an arbitrary color temperature or automatically adjust the color temperature to a preset color temperature according to the scene.

  The illumination light from the luminaire contains blue light, and even when bedtime is near, if the proportion of blue light contained in the illumination light is large, the melatonin secretion of people in the lighting environment is suppressed, The sleep latency is long and it may be difficult to sleep well.

JP 2011-14341 A

  The problem to be solved by the present invention is to provide a lighting device that is highly convenient while having a structure with reduced cost, that has a short sleep onset latency, and that can have a good sleep.

  The lighting fixture of the embodiment includes a main light source, a sub light source, and a control unit. The main light source generates light including blue light. The sub-light source generates light with a lower proportion of blue light than the main light source. The control unit gradually decreases the brightness of the main light source from the lighting state of the main light source and the sub light source, and gradually decreases the light output of the entire device including the light of the main light source and the light of the sub light source. Increasing the proportion of light from the sub-light source in the light output.

  According to the present invention, by gradually dimming so as to effectively reduce the proportion of blue light that suppresses melatonin secretion in the light output of the entire instrument, it is expected to shorten sleep onset latency and promote good sleep. it can.

It is a bottom view of the lighting fixture which shows 1st Embodiment. It is sectional drawing of a lighting fixture same as the above. It is a perspective view of the lighting fixture which shows 2nd Embodiment. It is a graph which shows the comparison of the deep sleep time of a lighting fixture same as the above. It is a graph which shows the comparison of the sleep latency of a lighting fixture same as the above. It is sectional drawing of the lighting fixture which shows 3rd Embodiment. It is a bottom view of the lighting fixture which shows 4th Embodiment. It is the bottom view which changed the light source unit of the lighting fixture same as the above.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 and 2.

  The luminaire 10 is, for example, a round ceiling light, and is attached to a hook ceiling body 12 installed on the ceiling 11 via an adapter 13.

  The lighting fixture 10 includes a fixture body 16, a first light emitting module 17 and a second light emitting module 18 attached to the lower surface of the fixture body 16, a lighting circuit 19 disposed in the fixture body 16, and a lower surface of the fixture body 16. Has an overlying shade 20.

  The appliance main body 16 has a disc shape, and an attachment portion 23 attached to the adapter 13 is formed at the center, and a storage portion 24 for storing the lighting circuit 19 is formed at the top.

  Each of the light emitting modules 17 and 18 includes a substrate 27 and a plurality of light emitting elements 28 mounted on the surface of the substrate 27. The substrate 27 is divided into a plurality of pieces in the circumferential direction, for example, and is combined in a ring shape in the circumferential direction by being installed in the instrument body 16. As the light emitting element 28, for example, a surface mount type SMD package type LED element is used. The plurality of light emitting elements 28 are arranged on the surface of the substrate 27 in, for example, two rows along the circumferential direction.

  The light emitting element 28 of the first light emitting module 17 is, for example, a light source that emits light having a day white color temperature (5000K) used for normal illumination, or light having a day white color temperature (5000K). Two types of light sources are included: a light source that emits light and a light source that emits light of the color temperature of the light bulb (2700 K). In this embodiment, the light emitting element 28 of the first light emitting module 17 is the main light source 29 that is also the first light source.

  The light emitting element 28 of the second light emitting module 18 is, for example, a light source that emits light having a light bulb color temperature, a light source that emits orange or red light, or both light sources having different light colors. Is used. The light emitting element 28 of the second light emitting module 18 is the sub light source 30 that is also the second light source.

  The main light source 29 and the sub light source 30 have a relationship in which the ratio of blue light contained in the light emitted from the sub light source 30 is smaller than the ratio of blue light contained in the light emitted from the main light source 29.

  The main light source 29 is disposed on the peripheral side of the instrument main body 16, and the auxiliary light source 30 is disposed on the center side of the instrument main body 16.

  Further, the lighting circuit 19 rectifies and smoothes AC power from a commercial AC power source, converts the DC power into predetermined DC power by the switching operation of the switching element, and outputs it to the light source, and ON / OFF of the switching element of the converter 33 It has the control part 34 which controls. The lighting circuit 19 can individually control at least lighting, dimming, and extinguishing of the main light source 29 and the sub light source 30. When the main light source 29 includes light sources having different color temperatures, lighting, dimming, and extinguishing of the light sources having different color temperatures can be individually controlled.

  The control unit 34 adjusts the brightness of the main light source 29 gradually from the lighting state of the main light source 29 and the sub light source 30, and includes the light of the main light source 29 and the light of the sub light source 30. There is a pleasant sleep toning control mode in which the overall light output is gradually reduced and the ratio of the light of the secondary light source 30 to the light output of the entire instrument is increased.

  Furthermore, in the pleasant sleep toning control mode, when the main light source 29 is dimmed to a dimming lower limit value that lowers to a predetermined brightness, dimming is performed so that the brightness of the sub-light source 30 is gradually lowered. When the main light source 29 is dimmed to the dimming lower limit value so as to decrease to a predetermined brightness, the main light source 29 is turned off and the dimming is performed so that the brightness of the sub light source 30 is gradually decreased. Also good.

  Such a pleasant sleep toning control mode is set by a user's operation before going to bed, or is automatically set when a predetermined time comes by setting a timer.

  Then, when all the lighting fixtures 10 are turned on, the light emitted from the main light source 29 and the sub light source 30 passes through the shade 20 and is irradiated to the illumination space.

  When the light sleep toning control mode is set before going to bed in the full lighting state of the lighting fixture 10, first the light is adjusted so that the brightness of the main light source 29 is gradually reduced, and the light of the main light source 29 and the sub-light source 30 Gradually lower the light output of the entire instrument including light. Thereby, the ratio of the light of the sub-light source 30 included in the light output of the entire instrument increases, and as a result, the ratio of the blue light included in the light output of the entire instrument decreases. Further, the peripheral side of the luminaire 10 is dimmed, and the center side is illuminated with light of the color temperature of the auxiliary light source 30.

  When the main light source 29 is dimmed to a dimming lower limit value that reduces the brightness to a predetermined level, dimming is performed so that the brightness of the sub light source 30 is gradually reduced. At this time, the main light source 29 may be in a dimming state at the dimming lower limit or may be turned off.

  It should be noted that the sub-light source 30 may be automatically turned off when the sub-light source 30 is dimmed to a dimming lower limit value that decreases to a predetermined brightness.

  According to the lighting device 10 of the present embodiment configured as described above, the sleep latency is shortened by gradually dimming so as to effectively reduce the blue light that suppresses melatonin secretion in the light output of the entire device. And you can expect a good night's sleep.

  Further, when the main light source 29 is lowered to a predetermined brightness, it is expected that the sleep sleep latency can be shortened more effectively and a good sleep can be achieved by gradually reducing the brightness of the sub-light source 30.

  In addition, since the main light source 29 is disposed on the peripheral side of the instrument body 16 and the sub-light source 30 is disposed on the center side of the instrument body 16, the light emission area is reduced by dimming the main light source 29. Can produce.

  In addition, when the lighting fixture 10 includes two types of light emitting elements 28 that emit light having a daylight white color temperature and light emitting elements 28 that emit light having a light bulb color temperature, light having a daylight white color temperature is emitted. The light-emitting element 28 that emits light may be the main light source 29, and the light-emitting element 28 that emits light having a light bulb color temperature may be the sub-light source 30, so that the pleasant sleep toning control mode may be performed before going to bed.

  Next, FIGS. 3 to 5 show a second embodiment. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and the description of the structure and effect is abbreviate | omitted.

  In FIG. 3, the lighting fixture 10 includes a light source unit 40 that is detachably attached to the fixture body 16.

  The instrument body 16 includes an adapter 13 at the center of the instrument body 16 and is attached to the hooking sealing body 12 via the adapter 13. The adapter 13 includes a connector portion 41 that is detachably attachable to the light source unit 40 and mechanically and electrically connected thereto.

  The light source unit 40 includes a light emitting element 42 and a lighting circuit 43 that controls the lighting of the light emitting element 42. The light source unit 40 includes a connector portion 44 that is detachably attached to the connector portion 41 of the adapter 13 and mechanically and electrically connected thereto.

  The instrument body 16 includes, for example, a light emitting element 28 having a correlated color temperature of 2700K and a light emitting element 28 having a 5000K color, and the lighting circuit 19 can perform toning control within a color temperature range of 2700K to 5000K.

  The light source unit 40 includes, for example, a red light emitting element 28 having a peak wavelength of 630 nm and a blue light emitting element 28 having a peak wavelength of 480 nm, and is mixed with red light, blue light, and red light and blue light from the lighting circuit 43. Toning control can be performed in the color gamut of magenta light.

  By independent control of the lighting circuit 19 of the fixture body 16 and the lighting circuit 43 of the light source unit 40, the color temperature can be arbitrarily controlled by the fixture body 16 side and the light source unit 40, respectively.

  By cooperative control of the lighting circuit 19 of the fixture body 16 and the lighting circuit 43 of the light source unit 40, for example, the 2700K light-emitting element 28 of the fixture body 16 and the red light-emitting element 42 of the light source unit 40 are turned on at the same time. Is changed, light having a color temperature lower than that of the light-emitting element 28 of 2700 K of the instrument body 16 can be reproduced. Similarly, by simultaneously lighting the 5000K light emitting element 28 of the instrument body 16 and the blue light emitting element of the light source unit 40, light having a higher color temperature can be reproduced.

  In the present embodiment, the light emitting element 28 of the instrument body 16 and the blue light emitting element 42 of the light source unit 40 are the main light sources 29, and the red light emitting element 28 of the light source unit 40 is the sub light source 30.

  And also in the lighting fixture 10 configured in this way, the blue light that suppresses the melatonin secretion in the light output of the entire fixture is effectively reduced by the pleasant sleep toning control mode that controls the main light source 29 and the auxiliary light source 30. By fading gradually, the sleep latency can be shortened and a good sleep can be expected.

  The measurement results of the effect of the pleasant sleep toning control mode are shown in FIGS. FIG. 4 shows the total time of deep sleep, and FIG. 5 shows the sleep latency from the floor to sleep. In the time zone from the evening to bedtime and in the time zone from bedtime to going out, the measurement was performed for the case where the color temperature of the illumination light was kept constant at 6500K and for the case where the pleasant sleep toning control mode was performed. .

  As shown in FIG. 4, regarding deep sleep time, it can be seen that deep sleep is longer and sleeps well in the case of executing the sleep toning control mode. In addition, as shown in FIG. 5, it can be seen that the sleep sleep latency is shorter in the case where the sleep sleep toning control mode is executed, and the sleep sleep latency is shorter.

  Therefore, the sleep toning latency can be shortened and the sleep can be improved by gradually dimming the blue light to effectively reduce the melatonin secretion in the light output of the whole instrument by the sleep toning control mode. I can expect.

  In addition, a sleep function can be easily added by simply attaching the light source unit 40 to the instrument body 16.

  Next, FIG. 6 shows a third embodiment. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and the description of the structure and effect is abbreviate | omitted.

  The luminaire 10 includes a light-emitting element 50 for indirect illumination for indirectly illuminating the surface of the ceiling 11 in addition to the light-emitting element 28 that is a main light source disposed on the lower surface of the fixture body 16. The light emitting element 50 emits light with a smaller proportion of blue light than the light emitting element 28.

  In the present embodiment, the light emitting element 28 that is the main light source disposed on the lower surface of the instrument body 16 is the main light source 29, and the light emitting element 50 for indirect illumination is the sub light source 30.

  And also in the lighting fixture 10 configured in this way, the blue light that suppresses the melatonin secretion in the light output of the entire fixture is effectively reduced by the pleasant sleep toning control mode that controls the main light source 29 and the auxiliary light source 30. By fading gradually, the sleep latency can be shortened and a good sleep can be expected.

  When the main light source 29 is dimmed by the light emitting element 28 arranged on the lower surface of the appliance body 16 by the sleep toning control mode, the ratio of indirect illumination increases compared to direct illumination, so the glare decreases, More effectively, it can be expected that the sleep latency is shortened and a good sleep is achieved.

  Next, FIGS. 7 to 8 show a fourth embodiment. In addition, the same code | symbol is used about the same structure as 1st Embodiment, and the description of the structure and effect is abbreviate | omitted.

  The lighting fixture 10 includes a rectangular fixture body 16 and a plurality of light source units 60 arranged in a matrix on the fixture body 16.

  The light source unit 60 of the lighting fixture 10 shown in FIG. 7 includes, as the light emitting elements 61, a light emitting element having a correlated color temperature of 2700K (L color) and a daylight color (D color) light emitting element having a correlated color temperature of 6500K. These light emitting elements 61 are arranged in a matrix. Then, the toning control can be performed by the lighting circuit 19 in the color temperature range of 2700K to 5000K.

  The light source unit 60 at the center of the instrument body 16 is configured to be detachable from the instrument body 16 and can be exchanged.

  The lighting fixture 10 shown in FIG. 8 shows an example in which only the light source unit 60a at the center of the fixture body 16 is replaced. The central light source unit 60a includes, for example, red (R), green (G), and blue (B) light emitting elements 62, and the light emitting elements 62 are arranged in a matrix.

  Further, by adding the central light source unit 60a, for example, the light of the daylight color (D color) and the blue (B) light emitting element 62 can emit light at the same time to reproduce light having a high color temperature. Similarly, light having a low color temperature can be reproduced by causing the light emitting element 61 of the light bulb color (L color) and the light emitting element 62 of red (R) to emit light simultaneously.

  In the present embodiment, the daylight color (D color) light emitting element 61 and the green (G) and blue color (B) light emitting element 62 are the main light sources 29, and the light bulb color (L color) light emitting element 61 and the red color (L color). The secondary light source 30 is the light emitting element 62 of R).

  And also in the lighting fixture 10 configured in this way, the blue light that suppresses the melatonin secretion in the light output of the entire fixture is effectively reduced by the pleasant sleep toning control mode that controls the main light source 29 and the auxiliary light source 30. By fading gradually, the sleep latency can be shortened and a good sleep can be expected.

  Moreover, a simple sleep function can be easily added only by attaching the light source unit 60a to the instrument body 16.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
16 Instrument body
29 Main light source
30 Secondary light source
34 Control unit
40 Light source unit
60a Light source unit

Claims (3)

A main light source that generates light including blue light;
A sub-light source that generates light having a lower proportion of blue light than the main light source;
The brightness of the main light source is gradually decreased from the lighting state of the main light source and the sub light source, and the light output of the entire instrument including the light of the main light source and the light of the sub light source is gradually decreased. A control unit for increasing the proportion of light of the sub-light source in the light output of;
The lighting fixture characterized by comprising. The lighting apparatus according to claim 1, wherein when the main light source is reduced to a predetermined brightness, the control unit gradually decreases the brightness of the sub-light source. An instrument body in which the main light source is disposed;
A light source unit having the auxiliary light source and detachably attached to the instrument body;
The lighting fixture according to claim 1, further comprising:

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