JP7059218B2 - Lighting equipment - Google Patents

Description

The present invention relates to a lighting device.

It is known that disturbance of circadian rhythm causes symptoms such as jet lag and circadian rhythm sleep disorder. Generally, it is known that the circadian rhythm is adjusted by being exposed to light, and the light color with a wavelength of light near 480 nm is particularly effective, and such light is exposed at an appropriate time zone. It is known that this has the effect of increasing the amount of melatonin that promotes sleep and activating serotonin that promotes awakening.

Patent Document 1 describes that blue light is known to have an effect of improving biological rhythm when exposed to light containing blue during the daytime.

Japanese Unexamined Patent Publication No. 2018-78011

It is an object of the present invention to provide a lighting device that outputs light of an appropriate wavelength for adjusting a circadian rhythm.

It is a lighting device equipped with a plurality of light emitting elements and equipped with a main light source attached to a substrate so as to irradiate light downward, and the main light source can include a wavelength of 470 nm to 480 nm in the peak wavelength at the time of lighting. The output amount of the main light source having a wavelength of 470 nm to 480 nm is changed according to the time.

According to the present invention, it is possible to provide a lighting device that outputs light having an appropriate wavelength for adjusting a circadian rhythm.

It is a figure which shows the LED lighting apparatus which concerns on embodiment of this invention, and is the external perspective view which shows when it sees from the diagonally downward direction. FIG. 3 is an external perspective view showing a state when the LED lighting device is viewed from diagonally upward. It is an exploded perspective view which shows the state when the LED lighting apparatus is seen from diagonally downward. It is an exploded perspective view which shows the state when the LED lighting apparatus is seen from diagonally above. It is a central vertical sectional view of the LED lighting device. It is a perspective view which shows the LED lighting apparatus which removed the shade and cross-sectioned a part of the LED cover. It is a perspective view which shows the state when the LED lighting apparatus which cross-sectioned a part of the indirect light cover is seen from diagonally above. It is a bottom view which shows an example of the LED light source substrate. It is a perspective view which shows the state when the LED lighting apparatus which removed the indirect light cover and the sensor unit is seen from diagonally above. It is a figure which shows the wiring state of the electric wire, and is the enlarged schematic sectional view of the main part of the LED lighting apparatus which removed the indirect light cover. FIG. 5 is an enlarged view of part A in FIG. FIG. 5 is an enlarged view of part B in FIG. It is a figure which shows the transition of the lighting mode of a main light source and an indirect light source by the button operation of a remote controller. It is a block diagram of the control circuit included in the power-source board. It is a block diagram explaining the function of this invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Hereinafter, the LED lighting device (LED ceiling light) according to the embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the present embodiment, an example of the LED lighting device 1 will be described by taking a circular shape in a plan view as an example, but the shape is not limited to this, and for example, a quadrangle, a hexagon, or an octagon. It can also be applied to polygonal objects such as. Further, in the present embodiment, the LED lighting device 1 using a light emitting diode (LED) as the main light source will be described below, but the main light source is not limited to the LED.

The LED lighting device 1 shown in FIGS. 1 and 2 is, for example, via a mounting adapter (not shown) that engages with an indoor wiring fixture (not shown) such as a hook rosette or a hook ceiling provided on the ceiling surface of a house. , It is connected to an external power source and fixed at a predetermined position on the ceiling surface for use. The LED lighting device 1 is made of, for example, a round shape, a square shape, or the like (in the present embodiment, it is a round shape). In the following description, the upper side of the paper surface is the ceiling side (upper surface side) and the lower side of the paper surface is the floor side (lower surface side) based on the state in which the LED lighting device 1 is attached to the ceiling surface.

As shown in FIGS. 3 and 4, the LED lighting device 1 includes a backbone 11, an adapter receiving portion 12 (insulating plate), a power supply board 13, a heat radiating plate 14, an LED light source board 15 (first light source board), and an LED cover. It includes 16, a center cover 17, a ring member 18, a shade 19, an indirect light source substrate 20 (second light source substrate), an indirect light cover 21 (upper cover), a sensor unit 22, and the like.

The backbone 11 is a base member obtained by processing and molding a steel plate (for example, SECC (electrogalvanized steel plate)) into a substantially circular shape, and is formed in a substantially concave shape (dish shape) so that the concave surface faces the floor side. Further, an adapter mounting hole 11a to which a mounting adapter (not shown) is locked is formed in the center of the backbone 11.
The adapter receiving portion 12 is formed of a synthetic resin having flame retardancy and electrical insulation (for example, PP: polypropylene resin, etc.), and is screw-fixed to the lower surface of the backbone 11 with a ring-shaped fixing portion 12a and the fixing portion. It has a cylindrical portion 12b extending from the inner peripheral edge portion of the 12a to the floor side (downward).
As shown in FIG. 3, the power supply board 13 has a lighting circuit board or the like including the control circuit 131 of FIG. 14, and is screwed to the backbone 11 via the adapter receiving portion 12 (insulating plate). As a result, the power supply board 13 is arranged in a heat radiating space surrounded by the backbone 11 and the heat radiating plate 14 described later in a state of maintaining electrical insulation.

Further, the power supply board 13 is electrically connected to a mounting adapter (not shown) via an electric wire 24 connected to a power supply connector 13b fixed to the lower surface of the power supply board 13. The power connector 13a is for connecting the power supply board 13, the LED light source board 15, and the indirect light source board 20 with an electric wire 23. As a result, the LED lighting device 1 is configured to be supplied with power via the indoor wiring fixture (not shown), the mounting adapter (not shown), the electric wires 23 and 24, and the power supply board 13, respectively.

As shown in FIG. 14, the control circuit 131 includes a microcontroller 1311 that controls the lighting circuit 130 and the like, a remote control signal receiving unit 1312 that receives a remote control signal, an EEPROM 1313 that records a lighting state, and the like. .. The control circuit may include a real-time clock 1314, a WiFi connection module 1315, a radio clock receiving element 1316, and the like. In addition, the WiFi connection module 1315 is connected to a local area network or the Internet.

The heat radiating plate 14 is a metal member that plays a role of radiating and cooling the heat of the power supply board 13 that generates heat during operation, the LED light source board 15 on which a plurality of LEDs are mounted, and the indirect light light source board 20. The LED of the LED element group 15b described later has a property of being vulnerable to heat. In addition, when an LED is used, it emits high-intensity light by passing a large current with a low voltage, and the heat generated by this light emission deteriorates the LED itself and surrounding members. Appropriate heat dissipation is required to achieve high reliability.

The heat radiating plate 14 is formed by processing and molding a steel plate into a substantially circular shape, and has a truncated cone-shaped substrate support portion 14a protruding toward the floor. Further, the heat radiating plate 14 is made of, for example, a metal having good thermal conductivity such as a galvanized steel plate, and is integrally formed seamlessly by squeezing to increase the strength. Further, the heat radiating plate 14 is formed to have a diameter larger than that of the backbone 11, and is attached to the backbone 11 so as to project radially outward from the backbone 11. The heat radiating plate 14 has an LED light source substrate 15 (first light source substrate) arranged on the lower surface side of the radiating plate 14 so that a plurality of LED elements (LED element group 15b) of the main light source irradiate light downward. The indirect light source substrate 20 (second light source substrate) is arranged so that the plurality of LED elements 20a of the sub-light source described later irradiate the light upward on the upper surface side of the heat radiating plate 14. Supplementally, the LED light source substrate 15 is arranged on the lower surface side of the heat radiating plate 14 so as to be along the lower surface. Further, the indirect light source substrate 20 is arranged on the upper surface side of the heat radiating plate 14 (the upper surface of the annular portion 14c described later) so as to be along the upper surface so as to suppress the height (thickness).

A circular through hole 14b is formed at the radial center of the heat radiating plate 14 at a position corresponding to the cylindrical portion 12b of the adapter receiving portion 12. Further, the outer peripheral portion of the heat radiating plate 14 has a horizontally formed circular annular portion 14c and a cover mounting portion 14e formed on the outer peripheral portion of the annular portion 14c. On the lower surface of the annular portion 14c, receivers 14d (see FIG. 3) for hooking the shade 19 described later are attached to three places at 120 ° intervals. As shown in FIG. 4, on the upper surface side of the annular portion 14c, an indirect light source substrate 20 screwed to the upper surface of the annular portion 14c and an indirect light cover 21 covering the indirect light source substrate 20 are arranged. ing.

As shown in FIGS. 5, 11 and 12, the cover mounting portion 14e is a portion to which the indirect light cover 21 is mounted, and is formed so as to expand substantially in a tapered shape on the outer peripheral portion of the heat radiating plate 14. An indirect light source substrate 20 is mounted in a ring shape on the annular portion 14c (the outer peripheral portion of the heat sink 14) above the cover mounting portion 14e, and a large number of LED elements 20a as sub-light sources are arranged.

As shown in FIGS. 6 and 10, the electric wire insertion hole 14f is composed of a through hole formed in the outer peripheral wall of the storage recess 14h formed in a recess shape inclined so as to expand upward. A plurality of electric wires 23 are wired in the electric wire insertion hole 14f. The electric wire insertion hole 14g is composed of a through hole formed in the annular portion 14c, and the electric wire 23 drawn out from the electric wire insertion hole 14f is wired. The storage recess 14h is a storage space in which the power supply board 13 to which the electric wire 23 is connected is installed.

The LED light source substrate 15 (first light source substrate) is a ring-shaped wiring board 15a arranged on the lower surface side of the backbone 11 with a heat sink 14 interposed therebetween, and one surface side (floor surface side) of the wiring board 15a. It is configured to include a main light source LED element group 15b in which a plurality of LEDs arranged concentrically are mounted by soldering or the like. The details of the LED element group 15b will be described later.

The wiring substrate 15a is formed by, for example, forming an insulating layer, a copper foil pattern, or the like on a substantially annular metal plate made of an aluminum alloy, or a flat plate of a resin having good thermal conductivity (for example, a polyimide resin or the like). It is configured by forming a copper foil pattern, solder resist, etc. on it. Further, the wiring board 15a is screwed to the heat radiating plate 14.

In the present embodiment, by providing the backbone 11 having the above-mentioned configuration and the heat sink 14, the volume of the heat dissipation space is increased (the amount of air in the heat dissipation space is increased), and the power supply board 13 and the LED light source board are provided. The heat dissipation efficiency of 15 is improved. As a result, the luminous efficiency of the LED element group 15b can be increased.

The LED light source substrate 15 shown in FIGS. 3 and 8 shows an example of an LED arrangement pattern for 18 tatami mats. As shown in FIG. 8, the LED element group 15b includes a plurality of daylight color LEDs (Light Emitting Diodes) 15b1 that emit light of daylight color (D color) and a plurality of light bulb colors that emit light of light bulb color (L color). A main light source is configured by including LEDs 15b2, a plurality of blue LEDs 15b3 that emit blue light, and LEDs 15b4 for security lights. Further, at the outer peripheral end of the LED light source substrate 15, a substantially arc-shaped protruding piece 15c formed so as to project outward, and an electric wire insertion hole 15d (see FIG. 4) formed at the base end of the protruding piece 15c. It has three connector portions 15e (see FIG. 6) mounted on the projecting piece 15c and connected to the electric wire 23.

The daylight color LED 15b1 has a peak wavelength of 430 nm to 460 nm, and is formed in a plurality of rows (for example, 9 rows) concentrically from the outer peripheral side to the inner peripheral side.

The light bulb color LED 15b2 has a peak wavelength of 550 nm to 650 nm, and is arranged so as to sandwich the daylight color LED 15b1 in each row arranged in a plurality of concentric rows. That is, the light bulb color LEDs 15b2 are arranged in each concentric row with two daylight color LEDs 15b1 sandwiched in the circumferential direction. The light bulb color LEDs 15b2 in the second row from the inner peripheral side are arranged with one or two daylight color LEDs 15b1 sandwiched between them. Further, the daylight color LED 15b1 and the light bulb color LED 15b2 are arranged at equal intervals or substantially equal intervals in the circumferential direction in each concentric row.

The blue LED 15b3 has a peak wavelength of 470 nm to 480 nm, and is circularly spaced in the circumferential direction between the daylight color LEDs 15b1 arranged in a plurality of concentric rows and the outermost circumference and the innermost circumference of the light bulb color LED 15b2. They are arranged in a ring. In the embodiment of FIG. 8, the rows in which the daylight color LEDs 15b1 and the light bulb color LEDs 15b2 are arranged are arranged in 5 rows concentrically on the inner peripheral side of the blue LEDs 15b3 arranged in an annular shape, and 4 concentrically on the outer peripheral side. It is arranged in columns.

The LED element group 15b shown in FIG. 8 is composed of, for example, 275 daylight color LEDs 15b1, 142 light bulb color LEDs 15b2, and 41 blue LEDs 15b3. The number of blue LEDs 15b3 is preferably about 10% of the total number of daylight color LEDs 15b1 and light bulb color LEDs 15b2.

The heat sink 14 and the LED light source substrate 15 are reflectively coated with a white paint that reflects light from the LED element group 15b toward the floor.

The LED cover 16 has a function of guiding the luminous flux emitted from the plurality of LED element groups 15b to the surface side (floor side), a function of pressing the LED light source substrate 15 so as to be in close contact with the heat sink 14, and a main light source. It has a function of covering the entire lower surface side of the LED element group 15b.

The LED cover 16 is integrally molded by injection molding or the like using, for example, a resin having translucency and electrical insulation such as polystyrene (PS), polycarbonate (PC), and acrylic (PMMA). In particular, it is preferable to use polystyrene in terms of transparency, cost and moldability. Further, the material used for the LED cover 16 is not limited to resin as long as it has translucency and electrical insulation, and may be glass or the like.

As shown in FIG. 6, the LED cover 16 has a substantially circular LED cover portion 16a that covers the entire light emitting surface (the surface on which the LED element group 15b is mounted) of the LED light source substrate 15, and the outside of the LED cover portion 16a. Containing a cylindrical wall portion 16b extending from the peripheral edge portion toward the back surface side (ceiling side), a brim portion 16c protruding radially outward from the upper end (rear surface side) of the wall portion 16b, and an LED light source substrate 15. It has a substrate storage portion 16d and a light source.

Further, in the LED cover 16, the LED cover portion 16a is screw-fixed to the substrate support portion 14a of the heat-dissipating plate 14, and the brim portion 16c is screw-fixed to the annular portion 14c of the heat-dissipating plate 14.

The wall portion 16b is formed so as to extend in a direction substantially orthogonal to the LED cover portion 16a. Further, a notch (not shown) is formed in the wall portion 16b so that the heat in the LED cover 16 can be released to the outside. The opening area of the notch is set to a size that the user's finger cannot insert. This makes it possible to prevent the user from directly touching the LED light source substrate 15 with his / her hand (finger).

The brim portion 16c is a fixing portion for fixing the LED cover 16 to the heat radiating plate 14 on the outer peripheral side of the LED light source substrate 15. The brim portion 16c extends along the circumferential direction and is formed by being divided into three parts. The substrate accommodating portion 16d is formed in a state of being inclined and recessed from the brim portion 16c, and the LED light source substrate 15 is horizontally arranged on the inner bottom portion thereof to accommodate the LED element group 15b.

FIG. 6 is a perspective view showing an example of a state in which the LED cover 16 having a partial cross section is attached to the lower side of the LED light source substrate 15. The LED of the LED element group shown in FIG. 8 is configured to emit light to the floor side through the corresponding plurality of dome-shaped portions 16a2 in the LED cover 16 shown in FIG. In the present embodiment, one set of LEDs is housed in one dome-shaped portion 16a2, but the number of LEDs housed in the dome-shaped portion 16a2 is not limited to this. For example, for example, of the set of two LEDs arranged in one dome-shaped portion 16a2, one is a daylight color LED15b1 and the other is a light bulb color LED15b2.

The center cover 17 is a member that covers a mounting adapter (not shown) exposed in the center of the main body of the apparatus, and is formed of, for example, a flame-retardant synthetic resin (for example, PP: polypropylene resin). Further, the center cover 17 is formed in a disk shape and is detachably attached to the LED cover 16.

The ring member 18 is configured such that the inner peripheral side of the ring portion is held on the outer peripheral side of the shade 19 made of a translucent material, and the outer peripheral side of the ring portion protrudes outward from the outer peripheral side of the shade 19. The ring member 18 is made of a light-transmitting material.

As shown in FIG. 5 (also as shown in FIGS. 3 and 4), the LED cover portion 16a has a circular through hole 16a1 formed in the central portion in the radial direction. In the LED cover portion 16a, a dome-shaped portion 16a2 is formed at a position corresponding to each of the LED element group 15b (daylight color LED15b1, light bulb color LED15b2, blue LED15b3) of the LED light source substrate 15. The dome-shaped portion 16a2 has a lens function, and is a member that diffuses light flux from the daylight color LED 15b1, the light bulb color LED 15b2, and the blue LED 15b3.

The shade 19 is a translucent cover made of a resin (for example, acrylic, polystyrene, etc.) having translucency (including transparent, translucent, or milky white), and is configured in a dome shape. The shade 19 diffuses the luminous flux emitted from the light source (LED element group 15b) to reduce the glare when the user directly looks at the LED lighting device 1, or the shade 19 in the space where the LED lighting device 1 is installed. It plays a role in making the brightness uniform. The shade 19 is detachably engaged and held by the receiver 14d of the heat sink 14.

As shown in FIG. 9, the indirect light source substrate 20 (second light source substrate) is arranged on the outer peripheral portion on the upper surface side of the heat radiating plate so as to irradiate light from the entire position of the outer peripheral portion. The indirect light source substrate 20 is configured by arranging and connecting three substantially fan-shaped substrates in a C shape, and a plurality of LED elements 20a as sub-light sources are mounted. In FIG. 9, 168 LED elements 20a are mounted. The LED element 20a may be a combination of a plurality of types of LED elements that each output different wavelengths, or a part or all of them may be an auxiliary light source that provides a wavelength similar to that of the blue LED 15b3, for example. Alternatively, it may be used as an auxiliary light source that outputs a wavelength of 650 nm or more, which has a longer peak wavelength than the light bulb color LED 15b2. The indirect light source board 20 includes a board connection connector 20b provided at the end in the circumferential direction, a board connection wire 20c wired between the connectors 20b, a power supply connection wire 23, and this wire. It includes a wiring notch 20e for inserting the 23 and a connector 20d for connecting a power supply attached in the vicinity of the wiring notch 20e (in this example, the indirect light source board 20 has an arcuate 3). It is composed of two boards connected together). The indirect light source substrate 20 is screwed and arranged on the annular portion 14c of the peripheral portion on the upper surface side of the heat radiating plate 14.

Therefore, as shown in FIGS. 11 and 12, the LED element 20a is arranged so as to irradiate light from the position of the entire peripheral portion on the upper surface side of the heat radiating plate 14. Further, the LED element 20a is arranged on the outer peripheral side of the outer peripheral portion of the LED light source substrate 15.

On the upper side of the indirect light source substrate 20 (second light source substrate), an indirect light cover 21 (upper cover) made of an annular translucent resin that covers the indirect light source substrate 20 from above is provided (upper cover). See Figure 3). The indirect light cover 21 has a reflecting portion 21a, 21b that reflects the light radiated from the LED element 20a of the sub-light source, a substrate accommodating portion 21c that covers the upper surface of the indirect light light source substrate 20, and a substrate accommodating portion 21c on the upper surface side. The formed mountain-shaped portion 21d, the inner edge portion 21e formed on the inner edge of the indirect light cover 21 (see FIGS. 3, 4, and 7), and the outer edge portion 21f formed on the outer peripheral portion of the mountain-shaped portion 21d. ,have.

As shown in FIG. 11, the reflective portion 21a is composed of a substantially annular projecting piece formed so as to project downward from the inner surface (ceiling surface) of the mountain-shaped portion 21d, and is radiated from the LED element 20a on the outer surface. It is formed so as to reflect light toward the outer periphery. Further, as shown in FIG. 12, the reflective portion 21b is composed of a substantially annular thick portion formed downward from the inner surface (ceiling surface) of the mountain-shaped portion 21d, and radiates from the LED element 20a on the outer wall surface. It is formed so as to reflect the generated light toward the outer peripheral direction. By attaching a reflective sheet or the like having a high reflectance to the outer peripheral surface of the wall of the reflecting portion or by painting a reflective material that reflects light, light can be emitted to the outer peripheral portion more efficiently. The reflective portions 21a and 21b formed in a substantially annular shape when viewed from the bottom surface are formed in a concave shape (substantially C-shaped) in order to avoid the reflection portions 21a and 21b where the sensor unit 22 is arranged. ing.

The substrate accommodating portion 21c is formed of a chevron portion 21d and a flat annular portion formed on the inner peripheral portion side of the chevron portion 21d. The mountain-shaped portion 21d is a portion that forms a space for forming the reflecting portions 21a and 21b between the upper surface of the indirect light source substrate 20 and the lower surface of the indirect light cover 21. The mountain-shaped portion 21d is formed in a mountain-shaped (triangular shape) with the upper surface viewed vertically, and is formed in a state of bulging upward.

As shown in FIG. 7, the inner edge portion 21e is formed so as to be formed on the inner peripheral portion of the inner edge portion of the indirect light source substrate 20. As shown in FIGS. 11 and 12, the outer edge portion 21f is formed downward from the outer peripheral portion of the mountain-shaped portion 21d, and is arranged so as to cover the outer peripheral surface of the cover mounting portion 14e of the heat radiating plate 14. ing.

As shown in FIGS. 3 and 4, the sensor unit 22 changes the power supplied to the LED element group 15b according to the brightness of the environment (space) in which the LED lighting device 1 is installed, for example, to illuminate the LED. It provides a function to obtain a constant illuminance under the device 1. It also detects the illuminance under the LED lighting device 1. The sensor unit 22 is attached to the upper part of the C-shaped notch formed portion of the indirect light source substrate 20.

[Action]
Next, the operation of the LED lighting device 1 according to the embodiment of the present invention will be described with reference to FIGS. 5, 11 and 12, mainly with reference to each figure.

The LED lighting device 1 shown in FIGS. 1 and 2 operates by being supplied with electric power from a power source and a power supply circuit (not shown). The power supply circuit has a function of adjusting the power of the power supply to a predetermined voltage or current. Further, the LED lighting device 1 has a function of receiving a signal (for example, infrared light) output from the remote controller by the light receiving unit (not shown) and transmitting the received signal to the control unit (not shown).

Further, the lighting circuit shown in the figure has a function of driving a daylight color LED 15b1, a light bulb color LED 15b2, and a blue LED 15b3 based on a control signal received from the control unit. Further, the lighting circuit (not shown) has a function of individually changing the drive current for driving the daylight color LED 15b1, the light bulb color LED 15b2, and the blue LED 15b3 based on the control signal received from the control unit.

The remote controller (not shown) has a function of outputting a set signal by operating a button. For example, as a lighting mode, a full light mode, a brightness up mode, a blue LED addition mode, and a brightness up mode are used. It can be set to + blue LED addition mode or the like. By the way, when adjusting the circadian rhythm in the daytime, if you press a predetermined button on the remote control, the brightness of the daylight color LED15b1 and the bulb color LED15b2 will increase, and the blue LED15b3 will light up to add blue-green light, making it even brighter. , Realizes a natural light that is closer to sunlight. This adjusts the circadian rhythm to the daytime state. Further, the indirect light (open light) mode relating to the lighting and extinguishing of a large number of LED elements 20a on the indirect light light source substrate 20 described below can also be set by pressing a predetermined button on the remote controller. In the indirect light (open light) mode, the lighting state can be changed arbitrarily each time the button is pressed. For example, in the case of operation when the main light source is lit, only the main light source is lit → main light source + indirect light is lit → only indirect light is lit → main The lighting state can be selected, such as lighting only the light source (see FIG. 13). Further, by combining the lighting mode and the indirect light mode, it is possible to select a lighting state more suitable for the LED lighting device 1.

Further, the upper surface side of the heat radiation plate 14 is provided with a translucent indirect light cover 21 that covers the indirect light source substrate 20 from above, and the indirect light cover 21 is a plurality of LED elements on the indirect light source substrate 20. It has reflecting portions 21a and 21b that reflect the light radiated from the 20a in the outer peripheral direction. Therefore, the light emitted from the LED element 20a is reflected in the outer peripheral direction by the reflecting portions 21a and 21b of the indirect light cover 21, so that the outer peripheral direction (lateral direction) is irradiated to brightly illuminate the entire room. Can be done. When the LED element 20a is combined with an LED element of a type that outputs a wavelength different from that of the main light source, it is possible to change the color temperature only for the light emitted in the outer peripheral direction.

[Description of operation]
Next, the operation of the function for adjusting the circadian rhythm (biological rhythm or circadian rhythm) of the human body (hereinafter referred to as this function), which is a feature of the lighting device of the present embodiment, will be described with reference to FIG.

FIG. 15 shows a control block diagram.
The lighting instruction is judged from the button press of the remote control or the power is turned on to the power supply board, and the function operation start instruction is received from S001 and S001 to judge the validity and invalidity of this function, and the current time is acquired. Determine the dimming amount of the main light source according to S003, determine the toning amount of the main light source according to the current time from S002. Determine the dimming amount of the sub light source according to the current time from S004, S002. Determine the toning amount of the sub light source according to the current time from S005 and S002. Determine the blue output degree of the main light source from the toning amount of the main light source from S006 and S003 and the toning amount of the main light source from S004. Determine the degree of output of the bulb color of the main light source from the dimming amount of the main light source from S007 and S003 and the toning amount of the main light source from S004. Determining the output degree of neutral white of the main light source from the toning amount of the light source S010 to determine the blue output degree of the sub light source from the dimming amount of the sub light source from S009 and S005 and the toning amount of the sub light source from S006. , Determines the output degree of the bulb color of the sub-light source from the dimming amount of the sub-light source from S005 and the toning amount of the sub-light source from S006. It is composed of S012, which determines the degree of neutral white output of the secondary light source from the amount of toning. The block shown in FIG. 15 is repeatedly executed, and dimming and toning are performed immediately.

In order to adjust the circadian rhythm of the human body, it is necessary to irradiate light of the appropriate wavelength at the appropriate time. Therefore, from the current time, it is determined how much blue is output, how much light bulb color is output, and how much daylight color is output.

First, this function starts operation when the S001 receives a lighting instruction by pressing the corresponding button on the remote controller or turning on the power to the power supply board.

Next, in S002, the current time is acquired by the real-time clock 1314.

The current time may be acquired by the radio clock receiving element 1316, or the current time may be acquired by connecting to a local area network or the Internet via a WiFi connection module 1315 and synchronizing with a time server or another device. You may. Alternatively, the current time may be acquired by radio waves from a mobile phone network or GPS satellites. If the information on the current time is held in the remote controller, the information on the current time may be included in the remote controller signal and obtained from the remote controller signal receiving unit 1312. In addition, since the real-time clock 1314 may shift due to long-term operation, communication processing is performed from the local area network or the Internet via a remote control or the WiFi connection module 1315, and the time is adjusted to obtain the real-time clock. You may reset the time. A wireless module or the like may be directly connected to the real-time clock 1314 to automatically set the time.
Alternatively, the time until the start or the end of the blue output increase may be instructed from the remote controller by the relative time from the current time without acquiring the current time.

Based on the current time, S003 determines the dimming amount of the main light source, S004 determines the dimming amount of the main light source, S005 determines the dimming amount of the sub light source, and S006 determines the dimming amount of the sub light source. Here, the dimming amount is a parameter indicating the brightness of the entire light source, and the toning amount is a parameter indicating the ratio of the output of blue, light bulb color, and neutral white. Here, in the daytime (for example, between 3:00 am and 15:00), the main light source is set to a brighter dimming amount, and the output of the blue LED 15b3 and the LED element 20a of the sub light source is adjusted to increase the blue output. Find the amount. On the contrary, during the nighttime (for example, from 15:00 to 27:00 (3:00 am the next day)), the brightness of the main light source is reduced from the daytime to the daylight color LED15b1, the blue LED15b3, and the secondary light source LED. A toning amount is obtained that reduces the output of a light source that contributes to the peak wavelength of blue such as the output of the element 20a and increases the output of a light source having a long peak wavelength such as the light bulb color LED 15b2. In particular, since the blue LED 15b3 may break the circadian rhythm by outputting at night, it is desirable to completely stop the output.

In addition, the period for increasing the blue output, the period for decreasing the blue output, or the period for increasing the light bulb color output may be fixed to the time specific to the lighting device, or the time of the season, weather, or sunrise / sunset. It may vary depending on such conditions, or it may be freely set by the user of the lighting device.

Further, the degree of output of each of the blue, light bulb color, and neutral white of the main light source and the sub light source may be set to a ratio peculiar to the lighting device, or may be freely set by the user of the lighting device. If the user of the lighting device can freely set it, the setting may be restricted so as not to disturb the circadian rhythm by making a setting such as outputting a large amount of blue color at night.

The degree of output of blue, light bulb color, and neutral white may be changed in two patterns, daytime (for example, 3:00 am to 15:00) and nighttime (for example, 15:00 to 27:00), and it has more detailed stages. You may let me.

When changing the degree of output of blue, light bulb color, and neutral white, the degree may be switched instantly, or it may be output gradually over a period of 1 to 5 seconds or more, such as 10 minutes. The degree of may be changed.
The dimming amount and toning amount of the main light source and the sub light source obtained according to the time are passed to S007 to S012.
The lighting circuit of the blue LED15b3 is driven by the blue output degree of the main light source obtained in S007, and the lighting circuit of the light source color LED15b2 is driven by the light bulb color output degree of the main light source obtained in S008. The lighting circuit of the daylight color LED15b1 is driven by the output degree of the neutral white color, the blue output degree of the sub light source obtained in S010, the bulb color output degree of the sub light source obtained in S011, and the sub light source obtained in S012. The lighting circuit of the LED element 20a of the secondary light source is driven by the output degree of neutral white. Therefore, it is possible to provide a lighting device that outputs light having an appropriate wavelength for adjusting the circadian rhythm.

1 LED lighting device 13 Power supply board 130 Lighting circuit 131 Control circuit 1311 Microcontroller 1312 Remote control signal receiver 1313 EEPROM
1314 Real-time clock 1315 WiFi connection module 1316 Radio clock receiver element 15 LED light source board (first light source board)
15b LED element group (LED element)
15b1 daylight LED
15b2 light bulb color LED
15b3 blue LED
20,20A Indirect light source board (second light source board)
20a LED element S001 Validity / invalidity determination means for functional operation S002 Means for acquiring the current time S003 Means for determining the dimming amount of the main light source S004 Means for determining the toning amount of the main light source S005 Determining the dimming amount of the sub light source S006 Means for determining the toning amount of the sub light source S007 Means for determining the blue output degree of the main light source S008 Means for determining the light bulb color output degree of the main light source S009 Means for determining the daylight color output degree of the main light source S010 Means for determining the blue output degree of the sub light source S011 Means for determining the light bulb color output degree of the sub light source S012 Means for determining the daylight color output degree of the sub light source

Claims (8)

It is a lighting device equipped with multiple light emitting elements and equipped with a main light source attached to a substrate so as to irradiate light downward.
The main light source can include a wavelength of 470 nm to 480 nm in the peak wavelength at the time of lighting, and has a plurality of daylight color LEDs that emit daylight color light, a plurality of light bulb color LEDs that emit light bulb color, and a plurality of light bulb color LEDs. Equipped with multiple blue LEDs that emit blue light,
The daylight LED has a peak wavelength of 430 nm to 460 nm and has a peak wavelength of 430 nm to 460 nm.
The light bulb color LED has a peak wavelength of 550 nm to 650 nm.
The blue LED has a peak wavelength of 470 nm to 480 nm.
When the current time is in the daytime, the output of the blue LED is adjusted to increase the output amount of the main light source having a wavelength of 470 nm to 480 nm.
When the current time is in the specified period of night, the brightness of the main light source is set to a dimming amount lower than that of the daytime, the output of the daylight color LED is reduced, and the output of the light bulb color LED is increased. The lighting device is characterized in that the output of the blue LED is completely stopped to reduce the output amount of the main light source having a wavelength of 470 nm to 480 nm. The lighting device according to claim 1 .
Has a means of communication with external devices,
A lighting device characterized in that the current time is acquired by using the communication means. The lighting device according to claim 2 .
The lighting device is characterized in that the communication means is a connection with another device including a server on the Internet. The lighting device according to claim 2 .
A lighting device characterized in that the communication means is a connection with another device on a local area network. The lighting device according to claim 2 .
The communication means is a lighting device characterized by being connected to an operation interface capable of recording a time for operating the lighting device. The lighting device according to claim 2 .
The communication means is a lighting device characterized by having the same standard radio waves as a radio clock. The lighting device according to claim 2 .
The communication means is a lighting device characterized by being radio waves of a mobile phone network. The lighting device according to claim 2 .
The communication means is a lighting device characterized by being radio waves from GPS satellites.

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