Illumination system

Abstract

To provide an illumination system capable of achieving dimming with a lower light intensity than conventional models.SOLUTION: An illumination system S1 includes a first light source unit 11, a second light source unit 12, and a control unit 13. The first light source unit 11 emits a first illumination light. The second light source unit 12 emits a second illumination light that is less bright than the first illumination light. The control unit 13 individually controls the dimming of the first light source unit 11 and the second light source unit 12 according to one or more dimming control patterns. The dimming control pattern includes a pattern for dimming the second light source unit 12 so as to increase and decrease the second illumination light one or more times.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to lighting systems, and more particularly to lighting systems with variable light intensity. [Background technology]

[0002] As a conventional example, the lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) includes a light-emitting unit and a control unit that controls the light-emitting unit. The control unit controls the power supplied to the light-emitting unit so that the output of light emitted from the light-emitting unit is repeatedly changed between high and low in a pulsating manner.

[0003] In the above-described conventional example, the control unit can induce drowsiness in a person by alternately increasing and decreasing the output of light emitted from the light-emitting unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-17446 Summary of the Invention [Problem to be solved by the invention]

[0005] However, as in the above-described conventional example, it is not possible to dim a light output lower than the dimming lower limit of the light-emitting unit by simply increasing or decreasing the output (amount of light) of light emitted from the light-emitting unit used for main illumination.

[0006] An object of the present disclosure is to provide a lighting system that can achieve dimming with a lower light intensity than conventional lighting systems. [Means for solving the problem]

[0007] An illumination system according to one aspect of the present disclosure includes a first light source unit that emits a first illumination light, a second light source unit that emits a second illumination light having a light intensity lower than that of the first illumination light, and a controller that controls the first light source unit and the second light source unit separately according to one or more dimming control patterns, wherein the dimming control patterns include a pattern for controlling the second light source unit to increase and decrease the second illumination light one or more times. [Effects of the Invention]

[0008] The lighting system of the present disclosure has the advantage of being able to achieve dimming with a lower light intensity than conventional lighting systems. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a system configuration diagram of a lighting system according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view of a lighting device used in the lighting system. [Figure 3] FIG. 3 is a partially omitted front view of the lighting device with the cover removed. [Figure 4] FIG. 4 is a partially omitted front view of the lighting device with the cover and lens block removed. [Figure 5] FIG. 5 is a diagram showing a menu screen of a lighting control application used in the lighting system. [Figure 6] FIG. 6 is a waveform diagram for explaining the operation of the lighting system. [Figure 7] FIG. 7 is a diagram showing a menu screen of a lighting control application used in the lighting system. [Figure 8] FIG. 8 is a front view of the lighting device. [Figure 9] FIG. 9 is a diagram illustrating the difference in light color between the first illumination light and the second illumination light in the lighting system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, lighting systems according to embodiments of the present disclosure will be described in detail with reference to the drawings. However, the drawings described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0011] (1) Overview The lighting system S1 according to the embodiment includes a first light source unit 11, a second light source unit 12, and a control unit 13 (see FIG. 1).

[0012] The first light source unit 11 emits a first illumination light. The second light source unit 12 emits a second illumination light having a smaller light intensity than the first illumination light. Both the first light source unit 11 and the second light source unit 12 have variable light intensities. For example, the first light source unit 11 and the second light source unit 12 each have one or more LEDs (Light Emitting Diodes). However, the first light source unit 11 and the second light source unit 12 may have light-emitting elements other than LEDs, such as organic EL (Electro Luminescence) elements or laser diodes.

[0013] The control unit 13 controls the dimming of the first light source unit 11 and the second light source unit 12 separately according to one or more dimming control patterns. The dimming control patterns include a pattern for controlling the dimming of the second light source unit 12 so as to increase and decrease the second illumination light one or more times.

[0014] Therefore, the lighting system S1 according to the embodiment has the control unit 13 control the dimming according to a dimming control pattern that increases and decreases the second illumination light, which has a lower light intensity than the first illumination light emitted by the first light source unit 11, one or more times, thereby achieving dimming with a lower light intensity than conventional lighting systems.

[0015] (2)Details (2-1) Configuration of the lighting system according to the embodiment A lighting system S1 according to an embodiment (hereinafter simply referred to as lighting system S1) includes a first light source unit 11, a second light source unit 12, and a control unit 13 (see FIG. 1). The lighting system S1 also includes a server C1 having a storage unit 14, an operation terminal B1 having an instruction unit 15, and a sound playback unit 16. The operation terminal B1 and the server C1 are capable of bidirectional communication with the control unit 13 via a wide area communication network (Internet N1). The operation terminal B1 and the server C1 are also capable of bidirectional communication via the Internet N1.

[0016] The operation terminal B1 is, for example, a smartphone, but may also be a tablet, a notebook PC (Personal Computer), or the like.

[0017] The operation terminal B1 is equipped with a mobile device-oriented SoC (System on a Chip), a touch panel-equipped liquid crystal display, or an organic electroluminescence display. The mobile device-oriented SoC is configured by integrating a processor, a GPU (Graphics Processing Unit), a memory, a communication circuit, various sensors, etc. into a single integrated circuit. The instruction unit 15 is realized by executing a lighting control application program (hereinafter referred to as a lighting control app) described below on the SoC processor.

[0018] The operation terminal B1 performs two-way wireless communication with the control unit 13 and the server C1 via the wireless router 2. The wireless router 2 is capable of two-way communication with the server C1 via the Internet N1. That is, the operation terminal B1 can perform two-way communication with the server C1 via the Internet N1 by wirelessly communicating with the wireless router 2. However, if the distance between the operation terminal B1 and the control unit 13 is short (for example, a distance of several meters to several tens of meters), the operation terminal B1 may perform wireless communication directly with the control unit 13 without going through the wireless router 2. For example, the operation terminal B1 and the control unit 13 may perform wireless communication conforming to the BLE (Bluetooth (registered trademark) low energy) communication standard.

[0019] Of the components of the lighting system S1, the first light source unit 11, the second light source unit 12, the control unit 13, and the sound reproducing unit 16 are provided in a lighting device A1 (see FIG. 1).

[0020] The first light source unit 11 includes, for example, an LED module having a plurality of LEDs that emit incandescent light (correlated color temperature of 3250K to 2600K) and a plurality of LEDs that emit daylight white (correlated color temperature of 5500K to 4600K). However, the first light source unit 11 may also include an LED module that emits light of a light color other than incandescent light and daylight white, for example, light of four colors: red, green, blue, and white.

[0021] The second light source unit 12 includes, for example, an LED module including one LED that emits incandescent light and one LED that emits daylight light. However, the LED module included in the second light source unit 12 may include two or more incandescent light LEDs and two or more daylight white LEDs, or may include only one or more incandescent light LEDs or daylight white LEDs. Furthermore, the LED module included in the second light source unit 12 may include one or more LEDs that emit light of a light color other than incandescent light and daylight white, for example, one or more LEDs that emit light of four colors: red, green, blue, and white.

[0022] The control unit 13 has a lighting circuit that lights up the LED modules of the first light source unit 11, a lighting circuit that lights up the LED modules of the second light source unit 12, and a control circuit that controls each lighting circuit separately to increase or decrease the current supplied to each LED module.

[0023] Each lighting circuit includes a rectifier that rectifies the AC voltage supplied from the power grid, a power factor correction circuit that boosts and smooths the pulsating voltage output from the rectifier, and two step-down chopper circuits that step down the DC voltage output from the power factor correction circuit, etc. However, the two lighting circuits may share one rectifier and one power factor correction circuit.

[0024] One of the two step-down chopper circuits in each lighting circuit supplies DC current to a plurality of LEDs that emit incandescent light, and the other supplies DC current to a plurality of LEDs that emit daylight light.

[0025] The control circuit controls each lighting circuit to individually increase or decrease the output current of these two step-down chopper circuits. As a result, the control circuit can individually adjust (dimming, color adjustment) the light intensity and light color (correlated color temperature) of the light emitted from the first light source unit 11 (hereinafter referred to as first illumination light) and the light emitted from the second light source unit 12 (hereinafter referred to as second illumination light). The control circuit also has a communication function for wireless communication with the wireless router 2. That is, the control circuit (control unit 13) can use this communication function to bidirectionally communicate with the operation terminal B1 and the server C1 via the wireless router 2. However, the control circuit (control unit 13) may also directly and bidirectionally communicate with the operation terminal B1 by wireless communication compliant with a communication standard such as BLE (Bluetooth (registered trademark) low energy).

[0026] The sound reproduction unit 16 includes a speaker unit 93 and a drive circuit that drives the speaker unit 93 to reproduce sound (voice, music, etc.). The drive circuit is configured to convert sound data output from the control circuit of the control unit 13 into an analog signal, and then drive the speaker unit 93 with a drive signal obtained by amplifying the analog signal using an amplifier to output (reproduce) sound. However, the sound reproduction unit 16 may be configured with a speaker and drive circuit provided in the operation terminal B1. Alternatively, the sound reproduction unit 16 may be a so-called wireless earphone that is wirelessly connected to the operation terminal B1.

[0027] The lighting device A1 is, for example, a so-called ceiling light installed on the ceiling of a living room of a house, but may also be a downlight embedded in the ceiling or a so-called stand light placed on a table or the like.

[0028] As shown in FIG. 2, the lighting device A1 includes a main body 90, a cover 91, a pair of panels 92, and a pair of speaker units 93.

[0029] The main body 90 is formed of a metal plate such as an aluminum plate into a long box shape with an open bottom. The main body 90 houses a first light source unit 11, a second light source unit 12, a control unit 13, etc.

[0030] The first light source unit 11 has an LED module 3 and a lens block 4 (see FIGS. 3 and 4). The LED module 3 has a long substrate 30 and a plurality of LEDs 31 mounted in a row and column on the surface (bottom surface) of the substrate 30 (see FIG. 4). The plurality of LEDs 31 includes a plurality of warm white LEDs and a plurality of daylight white LEDs.

[0031] The lens block 4 has a plurality of lenses 40 that correspond one-to-one to the plurality of LEDs 31, and a plate 41 that is formed in the shape of a long plate as a whole and that integrally joins the plurality of lenses 40 (see FIG. 3). Each lens 40 is configured to control the distribution of light emitted from a corresponding one of the LEDs 31.

[0032] The first light source unit 11 is housed in the main body 90 with the lens block 4 facing the bottom surface of the main body 90 (see FIG. 3). The control unit 13 is housed in the main body 90 between the first light source unit 11 and the inner bottom surface of the main body 90.

[0033] The second light source unit 12 has an LED module. The LED module has one warm white LED 50 and one daylight white LED 50 (see FIG. 4). These two LEDs 50 are mounted on a circuit board that constitutes a lighting circuit. However, the total number of LEDs 50 included in the LED module of the second light source unit 12 is not limited to two. The second light source unit 12 is covered with a light-transmitting portion 42 provided in the lens block 4 of the first light source unit 11 (see FIG. 3). That is, light emitted from the second light source unit 12 (second illumination light) is irradiated into the illumination space through the light-transmitting portion 42.

[0034] The cover 91 is formed in a rectangular plate shape from a translucent synthetic resin such as acrylic resin or polycarbonate resin. The cover 91 is configured to diffuse the first illumination light emitted from the first light source unit 11 and the second illumination light emitted from the second light source unit 12. Specifically, the synthetic resin forming the cover 91 is filled with a filler having light diffusing properties, thereby imparting light diffusibility to the cover 91. The first illumination light and the second illumination light enter the cover 91 from the inner surface (top surface) of the cover 91, are diffused by the filler, and then exit the cover 91 from the outer surface (bottom surface) of the cover 91.

[0035] Each of the pair of panels 92 is formed into a rectangular plate shape using a translucent synthetic resin such as acrylic resin or polycarbonate resin. One of the pair of panels 92 is attached to each end of the main body 90 in the short direction (see FIG. 2). One longitudinal end of each panel 92 enters the main body 90 from the opening end (bottom end) of the main body 90 and faces some of the LEDs mounted on the substrate 30 of the first light source unit 11. Each panel 92 is configured to capture light emitted from some of the LEDs from the end that enters the main body 90 and guide the captured light to emit it, thereby illuminating the entire panel 92. In other words, the lighting device A1 essentially has three first light source units 11: one that emits light through the cover 91 and one that emits light from each of the pair of panels 92.

[0036] A pair of speaker units 93 are provided integrally with the main body 90, one at each end in the longitudinal direction of the main body 90 (see FIG. 2). Each speaker unit 93 is, for example, an electrodynamic speaker unit. One speaker unit 93 outputs sound from the left channel of stereo playback, and the other speaker unit 93 outputs sound from the right channel of stereo playback.

[0037] The server C1 of the lighting system S1 has a memory unit 14 (see FIG. 1). The memory unit 14 includes a non-transitory storage medium (a storage medium that retains stored content even when power is not supplied), such as a non-volatile semiconductor memory, a hard disk drive (HDD), or a solid state drive (SSD). The server C1 stores lighting control patterns, which will be described later, in the memory unit 14. The memory unit 14 stores a plurality of lighting control patterns. The server C1 is configured to transmit control data, including the lighting control patterns stored in the memory unit 14, to the control unit 13 of the lighting device A1, based on an instruction from an instruction unit 15 of the operation terminal B1.

[0038] (2-2) Operation of the lighting system according to the embodiment Next, we will explain the operation of the lighting system S1. The lighting system S1 aims to provide a lighting environment suited to the user's behavior. In the following explanation, we will assume that the user (resident) is practicing mindfulness meditation in the living room of their home. Mindfulness specifically refers to consciously creating a mental state that allows one to focus solely on the present, while calming down thoughts that tend to pop into one's mind, such as daily worries and anxieties, work, and the opinions of others. Meditation is generally used as a method for practicing mindfulness. However, mindfulness meditation is said to have the effect of improving concentration by eliminating unnecessary distractions. In addition, it is expected to improve one's physical and mental condition by freeing oneself from the burden of anxiety and stress.

[0039] First, the user launches the lighting control app installed on the operating terminal B1 (smartphone or tablet). The lighting control app displays a login screen (login screen) on the screen of the display device of the operating terminal B1 (such as the LCD display of the smartphone or tablet). When a login ID and password are entered on the login screen, the lighting control app sends the entered login ID and password to the server C1 for authentication. The server C1 compares the login ID and password received from the operating terminal B1 with the user registration information stored in the database, and if they match the user registration information, it sends a reply to the operating terminal B1 indicating that authentication has been completed.

[0040] When the lighting control app receives a reply indicating that authentication has been completed from server C1, it displays menu screen G1 on the screen of the display device of operation terminal B1 (see FIG. 5). On menu screen G1 shown in FIG. 5, "living room" is selected as the installation location of lighting device A1, and multiple buttons MB1 are displayed that are assigned one-to-one to multiple modes selectable in "living room" (lights off, mindfulness, study, meal, relaxation, etc.). On menu screen G1 shown in FIG. 5, buttons MB2 for playing, stopping, and pausing sounds (environmental sounds) used in mindfulness meditation, etc., are displayed below button MB1 on the bottom row.

[0041] When one of the buttons MB1 is touched, the lighting control app interprets this as a selection of the course assigned to the touched button MB1, and creates a control command to call the lighting control pattern corresponding to the selected course. The lighting control app then sends a packet containing the created control command to server C1 using the SoC's communication function. For example, if a user touches button MB1 corresponding to the "Mindfulness" course on menu screen G1, the lighting control app sends a packet containing a control command corresponding to the "Mindfulness" course to server C1.

[0042] The server C1 receives a packet transmitted from the operating terminal B1 by the lighting control app. In accordance with the control command contained in the received packet, the server C1 reads out a lighting control pattern and audio data corresponding to the "mindfulness" course from the data stored in the storage unit 14. The server C1 transmits the packet including the read lighting control pattern and audio data to the lighting device A1 associated with the operating terminal B1 that sent the control command. The correspondence between the operating terminal B1 and the lighting device A1 is stored in the storage unit 14 of the server C1 as user registration information.

[0043] Meanwhile, the lighting control app sends a packet containing a control command corresponding to the "Mindfulness" course to server C1, and then displays button MB2 for playing (streaming) audio data on the screen of the display device (see FIG. 5). When button MB2 for playback is touched, the lighting control app sends a packet containing a command requesting streaming of audio data to server C1.

[0044] When the server C1 receives a packet containing a command requesting streaming of audio data, it streams the audio data to the operating terminal B1 in accordance with the command contained in the packet.

[0045] The lighting control app transfers audio data streamed from the server C1 to the control unit 13 of the lighting device A1 and plays it on the sound playback unit 16 of the lighting device A1. However, the lighting control app may output sound from the speaker of the operating terminal B1 in addition to or instead of the sound playback unit 16 of the lighting device A1.

[0046] Furthermore, the lighting control application causes the control unit 13 of the lighting device A1 to control the first light source unit 11 and the second light source unit 12 based on the lighting control pattern included in the packet received from the server C1. The control unit 13 of the lighting device A1 controls the first light source unit 11 and the second light source unit 12 so as to reproduce the dimming control pattern and the color adjustment control pattern included in the lighting control pattern.

[0047] Here, the lighting control pattern corresponding to the "mindfulness" course will be described with reference to FIG.

[0048] Mindfulness mode provides a lighting environment that encourages users to practice mindfulness meditation. Mindfulness mode consists of four phases. Specifically, it is designed to use light (light and sound) to guide users through the stages of meditation, starting with "deep breathing" (phase 1) as preparation for meditation, followed by "concentration meditation" (phase 2) and "awareness meditation" (phase 3), and finally returning to normal life (phase 4). Mindfulness mode provides flickering and changing light, background music, and more, in sync with the timing and duration of the meditation.

[0049] In the first phase, the control unit 13 controls the first light source unit 11 to slowly increase or decrease the warm light (e.g., the first illumination light of incandescent color) with a relatively large amplitude in order to encourage deep and slow breathing and regulate breathing (see FIG. 6). That is, the color adjustment control pattern in the first phase is a pattern in which the light color of the first illumination light is controlled to a relatively low color temperature (e.g., incandescent color). In addition, the dimming control pattern in the first phase is a pattern in which the first illumination light is gradually increased or decreased in a continuous, constant wave pattern.

[0050] In the second phase, the control unit 13 controls the second light source unit 12 to increase or decrease the warm, weak light more slowly with a relatively small amplitude in order to change the breathing to a natural pace for the user and direct attention to the areas where breathing is most noticeable, such as the chest and abdomen (see FIG. 6). That is, the color adjustment control pattern in the second phase is a pattern in which the light color of the second illumination light is controlled to a relatively low color temperature (for example, warm white). In addition, the dimming control pattern in the second phase is a pattern in which the second illumination light is gradually increased or decreased in a continuous, constant wave pattern.

[0051] In the third phase, the control unit 13 controls the first light source unit 11 to randomly and quickly increase and decrease the warm light in order to allow the user to broaden their attention panoramicly while paying attention to their breathing (see FIG. 6). That is, in this pattern, the light color of the first illumination light in the third phase is controlled to a relatively low color temperature (for example, warm white). In addition, the dimming control pattern in the third phase is a pattern in which the first illumination light is randomly and quickly increased and decreased.

[0052] In the fourth phase, in order to allow the user to return to their normal life, the control unit 13 controls the first light source unit 11 to change the light color from warm, weak light to bright white light and then further increase the white light (see FIG. 6). That is, the color adjustment control pattern in the fourth phase is a pattern in which the light color of the first illumination light is gradually increased (changing from incandescent white to daylight white). Also, the dimming control pattern in the fourth phase is a pattern in which the light intensity of the first illumination light is gradually increased, the light intensity of the first illumination light is kept constant for a predetermined time, and then the first illumination light is increased relatively suddenly.

[0053] Here, when dimming control is performed using only one light source unit (first light source unit 11) as in the conventional example, the amount of light emitted from the light source unit may not be sufficiently reduced. In contrast, lighting system S1 sets the amount of second illumination light emitted from second light source unit 12 lower than the amount of first illumination light emitted from first light source unit 11, thereby achieving dimming at a lower amount of light than conventional dimming (dimming of only first light source unit 11). Therefore, lighting system S1 can dimming control the second illumination light to an amount of light lower than the lower limit of dimming of the first illumination light in the second phase, further enhancing the effect of mindfulness meditation on the user.

[0054] Thus, by controlling the dimming of the second light source unit 12, the lighting system S1 can produce lighting effects in a darker environment than when controlling the dimming of only the first light source unit 11, thereby allowing people in the lighting space to relax and feel at ease.

[0055] The lighting control application is configured to accept setting inputs for the light intensity and light color of each of the first and second lighting lights in the dimming control pattern and the color adjustment control pattern via the input device (touch panel) of the operation terminal B1.

[0056] FIG. 7 shows a menu screen G2 for receiving and registering setting inputs, displayed on the screen of the display device of the operating terminal B1. This menu screen G2 has multiple buttons MB3 and two sliders MS1 and MS2. In the center of the menu screen G2, multiple buttons MB3 for selecting the light source (first light source unit 11, second light source unit 12) to be set are displayed. These multiple buttons MB3 include four buttons MB3 ("Center," "Panel 1," "Panel 2," and "Both Panels") corresponding to the three types of first light source unit 11 (cover 91 and pair of panels 92) and one button MB3 ("Night Light") corresponding to the second light source unit 12. In the lighting system S1, the second light source unit 12 is used as a night light that is turned on while sleeping, so the lighting control app assigns the name "Night Light" to the one button MB3 corresponding to the second light source unit 12.

[0057] Also, located below the center of the menu screen G2 are two buttons MB3 ("white light" and "warm light") and one slider MS2 for color adjustment control, and one slider MS1 for dimming control. To set the color of the first illumination light, the user touches one of the four buttons MB3 ("center," "panel 1," "panel 2," or "both panels"), and then touches either the "white" or "warm" button MB3, or moves the slider MS2 left or right to adjust the color of the first illumination light. To set the intensity of the first illumination light, the user touches one of the four buttons MB3 ("center," "panel 1," "panel 2," or "both panels"), and then moves the slider MS1 left or right to adjust the intensity of the first illumination light. Furthermore, when setting the light color of the second illumination light, the user touches the "Night Light" button MB3, and then touches either the "White" or "Warm" button MB3, or operates the slider MS2 left and right to adjust the light color of the second illumination light. When setting the light intensity of the second illumination light, the user touches the "Night Light" button MB3, and then operates the slider MS1 left and right to adjust the light intensity of the second illumination light.

[0058] The lighting control app transmits a packet including the dimming control and color adjustment control settings set in the above-described procedure to server C1. Then, upon receiving the packet transmitted from operation terminal B1, server C1 stores the dimming control and color adjustment control settings contained in the packet as a lighting control pattern in storage unit 14. However, the lighting control app may transmit the dimming control and color adjustment control settings directly to control unit 13 of lighting device A1 via wireless communication.

[0059] Thus, in the lighting system S1, the control unit 13 can adjust at least one of the maximum and minimum values ​​of the second illumination light in the dimming control pattern based on an external instruction (the lighting control setting content transmitted from the lighting control app) during the above-mentioned mindfulness meditation, etc. As a result, the lighting system S1 can expand the setting content of the dimming control pattern.

[0060] (2-3) Other advantages of the lighting system according to the embodiment In the lighting system S1, the second radiation surface 120 from which the second light source unit 12 emits the second illumination light is smaller than the first radiation surface 110 from which the first light source unit 11 emits the first illumination light (see FIG. 8). The second radiation surface 120 is the area inside the larger circle in FIG. 8. The first radiation surface 110 is the entire front surface (lower surface) of the cover 91 of the lighting device A1.

[0061] Therefore, in the lighting system S1, the second radiation surface 120 of the second light source unit 12 is smaller than the first radiation surface 110 of the first light source unit 11, so by dimming the second lighting light, it is possible to create lighting effects that evoke the light emitted by fireflies, the flickering of a candle flame, fireworks, the twinkling of stars, etc.

[0062] Here, in the lighting system S1, the area of ​​the range where the luminance of the second radiation surface 120 is at least half of the luminance at the maximum point of the luminance of the second radiation surface 120 (the center of the smaller circle in FIG. 8) is less than half the area of ​​the first radiation surface 110 (see FIG. 8). Note that the "luminance" referred to here is a measurement value measured, for example, from a position 2 meters away from the first radiation surface 110 and the second radiation surface 120 within a 2-degree field of view.

[0063] The lighting system S1 has the advantage of being able to more effectively create lighting effects that evoke the glow of fireflies, the flickering of a candle flame, fireworks, twinkling stars, and the like.

[0064] Furthermore, the lighting system S1 can make the light color of the second illumination light different from the light color of the first illumination light. That is, since the first light source unit 11 and the second light source unit 12 are each configured to change the correlated color temperature within a range from warm white to daylight white, the light color of the first illumination light and the light color of the second illumination light can be adjusted to different light colors.

[0065] FIG. 9 is a diagram showing the locus Z1 of blackbody radiation, five types of light source colors (daylight (D), neutral white (N), white (W), warm white (WW), and incandescent (L)), and the chromaticity range of each light source color on an xy chromaticity diagram. In FIG. 9, the elliptical region W1 that overlaps with the correlated color temperature of daylight white is a region that is expressed as 10 SDCM (Standard Deviation Color Matching). In this embodiment, "different light colors" means that the color matching standard deviation exceeds 10 SDCM.

[0066] Thus, the lighting system S1 has the advantage that by making the light color of the second lighting light different from the light color of the first lighting light, it is possible to create a lighting effect with the second lighting light that has a different atmosphere from the lighting effect created by the first lighting light.

[0067] 6, the lighting system S1 causes the control unit 13 to control the color of each of the first light source unit 11 and the second light source unit 12 according to one or more color adjustment control patterns. Therefore, the lighting system S1 has the advantage of being able to perform a wider variety of lighting effects.

[0068] Furthermore, the lighting system S1 sets the color temperature or correlated color temperature of the second lighting light to 3500K or less, so that the light color reminiscent of a candle flame and fireworks can be used to create a lighting effect that relaxes people in the lighting space and gives them a sense of comfort or calm.

[0069] Furthermore, in the lighting system S1, the control unit 13 outputs sound from a speaker (e.g., the speaker unit 93 of the lighting device A1) when controlling the second light source unit 12 for dimming control or color adjustment, or dimming control and color adjustment, thereby creating not only a visual effect through lighting effects but also an auditory effect through sound.

[0070] The lighting system S1 further includes a storage unit 14 that stores dimming control patterns and / or color adjustment control patterns, and an instruction unit 15 that instructs the control unit 13 to reproduce the dimming control patterns and / or color adjustment control patterns read from the storage unit 14 (see FIG. 1). In this embodiment, the server C1 includes the storage unit 14, but, for example, the lighting device A1 or the operation terminal B1 may also include the storage unit 14. Furthermore, instead of the operation terminal B1 including the instruction unit 15, a so-called infrared remote control that transmits a control signal to the lighting device A1 using infrared rays as a medium may also include the instruction unit 15.

[0071] Thus, the lighting system S1 includes the memory unit 14 and the instruction unit 15, and can cause the control unit 13 to reproduce a lighting control pattern selected from pre-prepared lighting control patterns (dimming control patterns and / or color adjustment control patterns). As a result, the lighting system S1 can be made easier to use.

[0072] Furthermore, in the lighting system S1, the control unit 13 may control the dimming of the first light source unit 11 at least one of a stage before controlling the dimming of the second light source unit 12 and a stage after controlling the dimming of the second light source unit 12. For example, when the first light source unit 11 is turned off and the second light source unit 12 is turned on from a state in which the light amount of the first illumination light is large (high), the sudden change in brightness may cause discomfort.

[0073] Thus, the lighting system S1 can suppress changes in brightness (difference in light intensity between the first illumination light and the second illumination light) by causing the control unit 13 to perform dimming control on the first light source unit 11 at least in one of a stage before dimming control on the second light source unit 12 and a stage after dimming control on the second light source unit 12. As a result, the lighting system S1 can suppress discomfort caused by a sudden change in brightness.

[0074] Furthermore, in the lighting system S1, the control unit 13 may control the color of the first light source unit 11 at least one of a stage before controlling the color of the second light source unit 12 and a stage after controlling the color of the second light source unit 12. For example, when the correlated color temperature of the first illumination light is increased and the first light source unit 11 is turned off and the correlated color temperature of the second illumination light is reduced, the sudden change in light color may cause discomfort.

[0075] Thus, the lighting system S1 can suppress changes in light color (correlated color temperature of the first illumination light and the second illumination light) by causing the control unit 13 to control the color of the first light source unit 11 at least one of a stage before controlling the color of the second light source unit 12 and a stage after controlling the dimming of the second light source unit 12. As a result, the lighting system S1 can suppress discomfort caused by a sudden change in light color.

[0076] (3) Variations Next, several modified examples of the lighting system S1 according to the embodiment will be described. However, the basic configuration of the lighting system S1 of each modified example described below is common to the basic configuration of the lighting system S1 according to the embodiment. Therefore, the same reference numerals will be used to designate components that are common to the basic configuration of the lighting system S1 according to the embodiment, and illustrations and descriptions thereof will be omitted as appropriate. In the following description, "substantially common configuration" means a configuration that is slightly different in shape, size, etc., but has the same function.

[0077] (3-1) Variation 1 The lighting system S1 of the first modification is characterized in that the control unit 13 performs dimming control and / or color adjustment control according to a schedule.

[0078] The lighting control app displays a menu screen for setting a schedule on the screen of the display device of the operation terminal B1. On the schedule setting menu screen, for example, it is possible to set lighting control patterns (dimming control patterns and / or color adjustment control patterns) for at least one of the first light source unit 11 and the second light source unit 12 for multiple time periods from wake-up time to bedtime and during sleep on weekdays from Monday to Friday and on weekends from Saturday to Sunday.

[0079] The lighting control app transmits schedule data set on the menu screen to server C1 using the communication function of operation terminal B1. Server C1 stores the schedule data received from operation terminal B1 in storage unit 14. Server C1 then transmits a lighting control pattern corresponding to the set day of the week and time of day to control unit 13 of lighting device A1 based on the schedule data stored in storage unit 14. As a result, lighting system S1 of modification 1 can cause control unit 13 to perform dimming control and / or color adjustment control in accordance with the schedule.

[0080] Therefore, the lighting system S1 of variant 1 causes the control unit 13 to perform dimming control and / or color adjustment control according to a schedule, so that, for example, lighting control is performed automatically when going to bed, thereby preventing unnecessary lights from being forgotten to be turned off, and improving usability.

[0081] (3-2) Variation 2 The lighting system S1 of the second modification is characterized by including an image display unit that displays images, a diffuser that diffuses fragrance, and a fan that blows air.

[0082] The video display unit may be a display device of a smartphone or tablet that is the operation terminal B1, or may be a so-called smart TV that has a communication function.

[0083] The lighting system S1 of variant 2, when controlling the dimming and / or color adjustment of the first light source unit 11 and the second light source unit 12, can relax people in the lighting space and give them a sense of ease or calm by displaying an image on the image display unit, diffusing a fragrance with the diffuser, or blowing air with the fan.

[0084] (3-3) Variation 3 In the lighting system S1 of the modified example 3, the second light source unit 12 includes one or more LEDs 31 among the plurality of LEDs 31 included in the LED module of the first light source unit 11. In other words, the lighting system S1 of the modified example 3 is characterized in that the first light source unit 11 and the second light source unit 12 share one or more LEDs 31.

[0085] Therefore, the lighting system S1 of the third modification includes one or more LEDs of the plurality of LEDs 31 of the first light source unit 11 in the second light source unit 12, which increases the variety of locations where the second light source unit 12 can be installed. As a result, the lighting system S1 of the third modification can produce lighting effects that evoke the light emitted by fireflies, fireworks, twinkling stars, etc.

[0086] (3-4) Variation 4 The lighting system S1 of the fourth modification is characterized by including a plurality of second light source units 12. For example, the lighting system S1 of the fourth modification has one or more second light source units 12 arranged at each of both ends and the center in the longitudinal direction of the main body 90 of the lighting device A1.

[0087] Therefore, since the lighting system S1 of the fourth modification includes a plurality of second light source units 12, it is possible to perform lighting effects that evoke the image of, for example, the light emitted by fireflies, fireworks, twinkling stars, and the like.

[0088] (4) Summary An illumination system (S1) according to a first aspect of the present disclosure includes a first light source unit (11), a second light source unit (12), and a control unit (13). The first light source unit (11) emits a first illumination light. The second light source unit (12) emits a second illumination light having a lower intensity than the first illumination light. The control unit (13) controls the dimming of the first light source unit (11) and the second light source unit (12) separately according to one or more dimming control patterns. The dimming control patterns include a pattern for dimming the second light source unit (12) to increase and decrease the second illumination light one or more times.

[0089] The lighting system (S1) according to the first aspect has the control unit (13) control the dimming according to a dimming control pattern that increases and decreases the second lighting light, which has a lower light intensity than the first lighting light emitted by the first light source unit (11), one or more times, thereby achieving dimming with a lower light intensity than conventional lighting systems.

[0090] An illumination system (S1) according to a second aspect of the present disclosure can be realized by combining it with the first aspect. In the illumination system (S1) according to the second aspect, it is preferable that the second radiation surface (120) from which the second light source unit (12) emits the second illumination light is smaller than the first radiation surface (110) from which the first light source unit (11) emits the first illumination light.

[0091] The lighting system (S1) according to the second aspect can produce lighting effects that evoke the image of the light emitted by fireflies, the flickering of a candle flame, fireworks, twinkling stars, etc. by adjusting the second lighting light.

[0092] An illumination system (S1) according to a third aspect of the present disclosure can be realized in combination with the second aspect. In the illumination system (S1) according to the third aspect, it is preferable that the area of ​​a range where the brightness of the second radiation surface (120) is at least half of the brightness at the maximum point of the brightness of the second radiation surface (120) is not more than half the area of ​​the first radiation surface (110).

[0093] The lighting system (S1) according to the third aspect can more effectively perform lighting effects that evoke the light emitted by fireflies, the flickering of a candle flame, fireworks, twinkling stars, and the like.

[0094] An illumination system (S1) according to a fourth aspect of the present disclosure can be realized by combining it with any one of the first to third aspects. In the illumination system (S1) according to the fourth aspect, it is preferable that the control unit (13) adjusts at least one of the maximum value and the minimum value of the second illumination light in the dimming control pattern based on an external instruction.

[0095] The lighting system (S1) according to the fourth aspect can expand the settings of the dimming control pattern.

[0096] An illumination system (S1) according to a fifth aspect of the present disclosure can be realized by combining it with any of the first to fourth aspects. In the illumination system (S1) according to the fifth aspect, it is preferable that the light color of the second illumination light is different from the light color of the first illumination light.

[0097] The lighting system (S1) according to the fifth aspect can use the second lighting light to create a lighting effect with a different atmosphere from that created by the first lighting light.

[0098] An illumination system (S1) according to a sixth aspect of the present disclosure can be realized by combining with the fifth aspect. In the illumination system (S1) according to the sixth aspect, it is preferable that the control unit (13) controls the color of the second light source unit (12) according to one or more color adjustment control patterns.

[0099] The lighting system (S1) according to the sixth aspect can perform a wider variety of lighting effects.

[0100] An illumination system (S1) according to a seventh aspect of the present disclosure can be realized by combining with the fifth or sixth aspect. In the illumination system (S1) according to the seventh aspect, it is preferable that the color temperature or correlated color temperature of the second illumination light is 3500 K or less.

[0101] The lighting system (S1) according to the seventh aspect can perform lighting effects that relax people in the lighting space and give them a sense of ease or calmness, for example, by using light colors that evoke the image of candle flames and fireworks.

[0102] An illumination system (S1) according to an eighth aspect of the present disclosure can be realized by combining it with any one of the first to seventh aspects. In the illumination system (S1) according to the eighth aspect, it is preferable that the control unit (13) outputs sound from the speaker (speaker unit 93) when controlling the dimming of the second light source unit (12).

[0103] The lighting system (S1) according to the eighth aspect can create not only visual effects through lighting effects but also auditory effects through sounds.

[0104] An illumination system (S1) according to a ninth aspect of the present disclosure can be realized by combining with any one of the sixth to eighth aspects. In the illumination system (S1) according to the ninth aspect, it is preferable that the control unit (13) outputs sound from the speaker when controlling the color of the second light source unit (12).

[0105] The lighting system (S1) according to the ninth aspect can create not only visual effects through lighting effects but also auditory effects through sounds.

[0106] A lighting system (S1) according to a tenth aspect of the present disclosure can be realized by combining it with any one of the first to ninth aspects. The lighting system (S1) according to the tenth aspect preferably further includes a memory unit (14) that stores a dimming control pattern, and an instruction unit (15) that instructs the control unit (13) to reproduce the dimming control pattern read from the memory unit (14).

[0107] The lighting system (S1) according to the tenth aspect includes a storage unit (14) and an instruction unit (15), and can cause the control unit (13) to reproduce a dimming control pattern selected from among prepared dimming control patterns. As a result, the lighting system (S1) according to the tenth aspect can be made easier to use.

[0108] An illumination system (S1) according to an eleventh aspect of the present disclosure can be realized by combining it with any one of the sixth to tenth aspects. Preferably, the illumination system (S1) according to the eleventh aspect further includes a storage unit (14) that stores a color adjustment control pattern, and an instruction unit (15) that instructs the control unit (13) to reproduce the color adjustment control pattern read from the storage unit (14).

[0109] The lighting system (S1) according to the eleventh aspect includes a storage unit (14) and an instruction unit (15), and can cause the control unit (13) to reproduce a color adjustment control pattern selected from pre-prepared color adjustment control patterns. As a result, the lighting system (S1) according to the eleventh aspect can be made easier to use.

[0110] A lighting system (S1) according to a twelfth aspect of the present disclosure can be realized by combining it with any of aspects 1 to 11. In the lighting system (S1) according to the twelfth aspect, it is preferable that the control unit (13) performs dimming control according to a schedule.

[0111] The lighting system (S1) according to the twelfth aspect can improve usability by automatically controlling lighting when going to bed, for example, thereby preventing unnecessary lighting from being forgotten to be turned off.

[0112] A lighting system (S1) according to a thirteenth aspect of the present disclosure can be realized by combining it with any one of aspects six to eleven. In the lighting system (S1) according to the thirteenth aspect, it is preferable that the control unit (13) performs color adjustment control according to a schedule.

[0113] The lighting system (S1) according to the thirteenth aspect can improve usability by automatically controlling lighting when going to bed, for example, thereby preventing unnecessary lighting from being forgotten to be turned off.

[0114] An illumination system (S1) according to a fourteenth aspect of the present disclosure can be realized by combining with any one of aspects 1 to 13. In the illumination system (S1) according to the fourteenth aspect, it is preferable that the control unit (13) controls the dimming of the first light source unit (11) at least one of a stage before controlling the dimming of the second light source unit (12) and a stage after controlling the dimming of the second light source unit (12).

[0115] The lighting system (S1) according to the fourteenth aspect can suppress the change in brightness (the difference in the amount of light between the first illumination light and the second illumination light) and thereby suppress the discomfort caused by a sudden change in brightness.

[0116] An illumination system (S1) according to a fifteenth aspect of the present disclosure can be realized by combining with any one of aspects six to eleven. In the illumination system (S1) according to the fifteenth aspect, it is preferable that the control unit (13) controls the color of the first light source unit (11) at least one of a stage before controlling the color of the second light source unit (12) and a stage after controlling the color of the second light source unit (12).

[0117] The lighting system (S1) according to the fifteenth aspect can suppress changes in light color (correlated color temperatures of the first illumination light and the second illumination light), thereby preventing a sudden change in light color from causing discomfort.

[0118] An illumination system (S1) according to a sixteenth aspect of the present disclosure can be realized by combining with any one of the first to fifteenth aspects. In the illumination system (S1) according to the sixteenth aspect, the first light source unit (11) preferably has a plurality of light-emitting elements (LEDs 31). The second light source unit (12) preferably includes one or more light-emitting elements from the plurality of light-emitting elements.

[0119] In the lighting system (S1) according to the sixteenth aspect, one or more of the light-emitting elements of the first light source unit (11) is included in the second light source unit (12), which increases the variety of installation locations for the second light source unit (12). As a result, the lighting system (S1) according to the sixteenth aspect can produce lighting effects that evoke the light emitted by fireflies, fireworks, twinkling stars, etc.

[0120] An illumination system (S1) according to a seventeenth aspect of the present disclosure can be realized by combining with any one of aspects 1 to 16. In the illumination system (S1) according to the seventeenth aspect, it is preferable that the illumination system (S1) includes a plurality of second light source units (12).

[0121] The lighting system (S1) according to the seventeenth aspect can produce lighting effects that evoke the image of the light emitted by fireflies, fireworks, twinkling stars, and the like. [Explanation of symbols]

[0122] S1 Lighting System 11 1st light source section 12 Second light source section 13 Control Unit 14 Storage section 15 Instruction section 31 LED (light emitting element) 93 Speaker unit (speaker) 110 First radiation surface 120 Second radiation surface

Claims

1. a first light source unit that emits a first illumination light; a second light source unit that emits second illumination light having a light amount smaller than that of the first illumination light; a control unit that controls the dimming of the first light source unit and the second light source unit separately according to one or more dimming control patterns; Equipped with the dimming control pattern includes a pattern for dimming the second light source unit so as to increase and decrease the second illumination light one or more times; Lighting system.

2. a second radiation surface from which the second light source unit emits the second illumination light is smaller than a first radiation surface from which the first light source unit emits the first illumination light; 10. The lighting system of claim 1.

3. an area of ​​a range where the luminance of the second radiation surface is equal to or greater than half of the luminance at the maximum point of the luminance of the second radiation surface is equal to or less than half of the area of ​​the first radiation surface; 3. The lighting system of claim 2.

4. the control unit adjusts at least one of a maximum value and a minimum value of the second illumination light in the dimming control pattern based on an external instruction. A lighting system according to any one of claims 1 to 3.

5. the color of the second illumination light is different from the color of the first illumination light; A lighting system according to any one of claims 1 to 3.

6. the control unit controls the color of the second light source unit according to one or more color adjustment control patterns; 6. The lighting system of claim 5.

7. The color temperature or correlated color temperature of the second illumination light is 3500 K or less.

6. The lighting system of claim 5.

8. the control unit controls the second light source unit to output a sound from a speaker when controlling the dimming of the second light source unit. A lighting system according to any one of claims 1 to 3.

9. the control unit controls the second light source unit to output a sound from a speaker when controlling the color of the second light source unit to be adjusted.

7. The lighting system of claim 6.

10. a storage unit that stores the dimming control pattern; an instruction unit that instructs the control unit to reproduce the dimming control pattern read from the storage unit; Further comprising: A lighting system according to any one of claims 1 to 3.

11. a storage unit that stores the color matching control pattern; an instruction unit that instructs the control unit to reproduce the color matching control pattern read from the storage unit; Further comprising:

7. The lighting system of claim 6.

12. The control unit performs the dimming control according to a schedule. A lighting system according to any one of claims 1 to 3.

13. The control unit performs the color matching control according to a schedule.

7. The lighting system of claim 6.

14. the control unit controls the dimming of the first light source unit at least one of a stage before controlling the dimming of the second light source unit and a stage after controlling the dimming of the second light source unit. A lighting system according to any one of claims 1 to 3.

15. the control unit controls the color of the first light source unit in at least one of a stage before controlling the color of the second light source unit and a stage after controlling the color of the second light source unit.

7. The lighting system of claim 6.

16. the first light source unit has a plurality of light-emitting elements, the second light source unit includes one or more of the plurality of light-emitting elements, A lighting system according to any one of claims 1 to 3.

17. A plurality of the second light source units are provided. A lighting system according to any one of claims 1 to 3.

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