JP2024088815A - Lighting control device and lighting system - Google Patents

Abstract

[Problem] To provide a lighting control device and lighting system that make it easier for a user to select a desired chromaticity than in the past. [Solution] The lighting control device is a lighting control device that displays on a touch panel a graphical user interface for controlling a lighting device equipped with a three-color LED package, and as the graphical user interface, it is possible to switch between a normal specification graphical user interface for changing the chromaticity of the light emitted by the lighting device along the blackbody radiation locus and a performance specification graphical user interface 130 that allows selection of chromaticities that do not follow the blackbody radiation locus in addition to chromaticities that follow the blackbody radiation locus, and the performance specification graphical user interface 130 has a plurality of color setting buttons 131 that correspond to a predetermined number of chromaticities when the lighting device emits light and that, when touched by the user, emit light at the corresponding chromaticity, and each of the color setting buttons 131 is at least partially colored in a color that imitates the corresponding chromaticity. [Selected Figure] Figure 5

Description

The present invention relates to a lighting control device that controls a lighting fixture equipped with three-color LED packages.

In recent years, GUIs (graphical user interfaces) have been used to control the light emitted by lighting fixtures. Patent Document 1 discloses a technique in which a chromaticity diagram is displayed as a GUI, a user selects a point on the diagram as a color coordinate, and the lighting fixture emits light with a chromaticity corresponding to the selected color coordinate.

JP 2009-117339 A

However, with the above technology, there are conceptually an infinite number of points that can be selected as color coordinates, which can lead to the problem that the user may be confused when making a selection. In addition, when a user wishes to select color coordinates that were previously selected at a later time, it is difficult to specify the same color coordinates.

In view of the above problems, the present invention aims to provide a lighting control device and a lighting system that make it easier for users to select the desired chromaticity than ever before.

In order to solve the above problems, the lighting control device of the present invention is a lighting control device that displays on a touch panel a graphical user interface for controlling a lighting device equipped with LED packages of multiple colors, and the graphical user interface can be switched between a normal graphical user interface for changing the chromaticity of the light emitted by the lighting device along the blackbody radiation locus and a performance-specific graphical user interface that allows the selection of chromaticities that do not follow the blackbody radiation locus in addition to chromaticities that follow the blackbody radiation locus, and the performance-specific graphical user interface has a plurality of color setting buttons that correspond to a predetermined number of chromaticities when the lighting device emits light and that, when touched by the user, emit light at the corresponding chromaticity, and each of the color setting buttons is at least partially colored with a color that imitates the corresponding chromaticity.

With the above-mentioned configuration, the lighting control device of the present invention has a graphical user interface for the performance specifications in which the chromaticity options are limited to a predetermined number, and each chromaticity can be recognized by an image of a color that imitates the chromaticity, allowing the user to easily select the desired chromaticity.

FIG. 1A is a diagram showing an overall configuration of a lighting system according to an embodiment of the present invention, and FIG. 1B is a diagram for explaining an LED package of a lighting fixture included in the lighting system. FIG. 2A is a block diagram showing the configuration of a lighting fixture included in the lighting system; FIG. 2B is a block diagram showing the configuration of a lighting control device included in the lighting system. 3 is a chromaticity diagram for explaining the chromaticity of a light source included in a lighting fixture. FIG. FIG. 13A is a diagram showing a GUI for editing a group, and FIG. 13B is a diagram showing a GUI for calling up a normal specification GUI and a performance specification GUI. FIG. 13 is a diagram showing a GUI for specifying the performance specifications for adjusting the brightness and color of a light. A diagram showing RGB values representing the colors of each color setting button displayed on the performance specification GUI. FIG. 13 illustrates a recommendation list GUI. FIG. 13 is a diagram showing a GUI of normal specifications for adjusting light and color. FIG. 13 illustrates a recommendation list GUI. FIG. 13 is a diagram showing a GUI for fine-tuning a color tone. A figure showing a GUI for switching between normal specifications and performance specifications in one modified example of the present invention. FIG. 13 is a diagram showing an overall configuration of a lighting system according to a modified example of the present invention.

1. First embodiment
<1.1. Configuration>
Hereinafter, a lighting system 1 according to an embodiment of the present invention will be described with reference to the drawings.

Figure 1 (a) is a diagram showing the overall configuration of a lighting system 1 according to one embodiment of the present invention. As shown in Figure 1, the lighting system 1 includes a plurality of lighting fixtures 4a, 4b, 4c, ..., 4d (hereinafter collectively referred to as "lighting fixtures 4") and a smartphone 6 as an example of a lighting control device for controlling the lighting fixtures 4.

Each of the lighting fixtures 4 and the smartphone 6 communicate with each other wirelessly. The wireless communication complies with the BLE (Bluetooth (registered trademark) Low Energy) standard, for example. The lighting fixtures 4 and the smartphone 6 form a mesh network, and even if they are outside the wireless range or if there is an obstacle and the wireless communication cannot reach them, they can communicate indirectly through the mesh network within the range of the mesh network. For example, as shown in FIG. 1(a), when the smartphone 6 cannot directly communicate with lighting fixture 4d but can directly communicate with lighting fixture 4b, it can indirectly communicate with lighting fixture 4d via lighting fixtures 4b, 4c, etc. using the mesh network.

Each of the lighting fixtures 4 includes three LED (Light Emitting Diode) packages as an example of multiple colors, and the chromaticity of the light emitted by the lighting fixture 4 changes depending on the balance of the dimming rate of each LED package (hereinafter referred to as the "package dimming rate"). That is, the smartphone 6 stores the package dimming rate of each of the three LED colors when the lighting fixture 4 is caused to emit light at a certain chromaticity. In addition, the user can specify a dimming rate for the lighting fixture 4 from 0% in an off state to 100% in a fully lit state to control the light emission state. The dimming rate specified by the user is hereinafter referred to as the "specified dimming rate". When the lighting fixture 4 is caused to emit light at a certain chromaticity, the smartphone 6 controls each LED package to emit light at a dimming rate obtained by multiplying each package dimming rate corresponding to that chromaticity by the specified dimming rate. That is, even if the specified dimming rate is changed, the chromaticity of the light emitted by the lighting fixture 4 does not change.

The smartphone 6 has a GUI that allows the user to specify the desired dimming rate and chromaticity, and notifies the lighting device 4 of a control signal corresponding to the chromaticity and specified dimming rate specified by the user, and the lighting device 4 emits light according to the notified control signal. The smartphone 6 has a GUI that makes it easier for the user to specify the selection of chromaticity than before, improving user convenience.

In the following explanation, the term "dimming rate" refers to the "specified dimming rate" unless otherwise specified.

<1.1.1. Lighting fixture 4>
Regarding the lighting fixture 4, the configuration of the lighting fixture 4a will be described below, but the other lighting fixtures 4b, 4c, . . . 4d of the lighting fixture 4 have the same configuration.

As shown in FIG. 2(a), the lighting device 4a includes a light source unit 40, a circuit unit 43, and a WM (wireless module) unit 44.

<Light source unit 40>
1B, the light source unit 40 includes a light source configured with an LED package 42, and a light source board 41 which is a circuit board on which the light source is arranged. Note that the light source is sufficient as long as it functions as a light source for illumination, and may be configured with a device other than an LED, such as an organic EL (Electro Luminescence) device. The light source unit 40 performs operations such as turning on and off the light source, changing the dimming rate, and changing the chromaticity (also called "color adjustment") based on the input control signal.

<LED chromaticity>
The LED package 42 uses three LEDs: a bluish-white LED 42c "Bw", a red LED 42b "R", and a yellowish-white LED 42a "Yw". Although Yw is a color close to yellow on the chromaticity diagram, it also appears to be a color close to green when the other LEDs Bw and R are turned on at the same time. Figure 3 shows the CIE 1931 chromaticity coordinates for explaining the chromaticity of these LEDs, and for reference, the line connecting the chromaticity of blackbody radiation at each color temperature (hereinafter referred to as the "blackbody radiation locus") is shown by a dashed line.

The bluish-white LED 42c, Bw, emits light with a chromaticity in the range enclosed by (0.336, 0.24), (0.352, 0.44), (0.15, 0.2), and (0.2, 0.1) in the chromaticity coordinates of Figure 3, and one example is (0.23, 0.26).

The red LED 42b R emits light with a chromaticity in the range surrounded by the chromaticity boundary line E, i.e. (0.66, 0.23), (0.423, 0.355), and (0.5, 0.5) in the chromaticity coordinates of Figure 3, and is (0.60.0.38) as an example. Please note that this is not the same as the general definition of red.

The yellow-white LED 42a, Yw, emits light with a chromaticity in the range surrounded by (0.5, 0.5), (0.423, 0.355), (0.342, 0.312), (0.352, 0.44), (0.37, 0.63) and the chromaticity boundary line E in the chromaticity coordinates of FIG. 3, and one example is (0.44, 0.47).

Within the chromaticity range of Yw, it is preferable that duv (color deviation) is in the positive range from the blackbody radiation locus at each color temperature, with duv of plus 0.03 to 0 being particularly preferable. Within the chromaticity range of Bw and R, it is particularly preferable that duv is in the range of plus 0.03 to minus 0.03 from the line connecting the chromaticities of the blackbody radiation at each color temperature.

Note that it can also be displayed using CIE1976 chromaticity coordinates (u', v') instead of CIE1931 chromaticity coordinates (x, y), and the two can be converted to each other using the conversion formulas u' = 4x/(-2x + 12y + 3), v' = 9y/(-2x + 12y + 3). It may also be displayed using other chromaticity coordinate systems.

<Circuit section 43>
The circuit section 43 includes a socket for mounting the WM section 44 , and has a function of supplying a direct current to the light source section 40 in response to a control signal received from the WM section 44 .

The circuit unit 43 converts commercial AC power to DC and has three-channel drive outputs to operate the three types of LED packages of the light source unit 40 independently, and each drive output can be controlled by an external control signal. In this embodiment, the control signal is transmitted wirelessly and received by the WM unit 44, which then sends the control signal to the circuit unit 43, which controls the circuit unit 43. The three-channel drive outputs are independently controlled by the control signal, allowing the light source unit 40 to emit light of any chromaticity surrounded by the chromaticities of the three LEDs.

<WM section 44>
The WM unit 44 is a module that performs wireless communication, and is configured as a removable stand-alone device that can be attached to and detached from the socket of the circuit unit 43. The WM unit 44 is capable of wireless communication according to a plurality of communication specifications, but is not limited to this. For example, a dedicated WM unit 44 may be prepared for each different communication specification, and the WM unit 44 corresponding to the communication protocol to be used may be attached to the socket. The WM unit 44 includes a wireless communication unit 44a and a control unit 44b.

<Wireless communication unit 44a>
The wireless communication unit 44a has a function of performing wireless communication. The wireless communication unit 44a functions as a transmitting means for transmitting information and a receiving means for receiving information. The wireless communication unit 44a holds a Media Access Control address (hereinafter referred to as a "MAC address") as an example of identification information. The MAC address is also used as an address for wireless communication.

When the wireless communication unit 44a receives communication data, if the communication data is addressed to the device itself, it notifies the control unit 44b, and if the communication data is addressed to another device, it transfers it to the other device via the mesh network.

<Control unit 44b>
The control unit 44 b includes an integrated circuit (IC) and has a function of controlling the operation of the lighting device 4 .

When the control unit 44b receives an operation instruction regarding the operation of the light source, such as turning the light source on, off, blinking, increasing the dimming rate, or decreasing the dimming rate, the control unit 44b outputs a control signal to the circuit unit 43 to perform the operation indicated by the operation instruction.

<1.1.2. Smartphone 6>
Smartphone 6 is a portable information terminal device having a rectangular plate-like appearance as shown in Fig. 1(a) and having a touch panel 65 fitted on one surface. Smartphone 6 has a function of controlling the light-emitting operation of lighting fixture 4, and displays a GUI for controlling the light-emitting operation of lighting fixture 4 on touch panel 65. Smartphone 6 determines an instruction for an operation requested by the user based on the content of the GUI displayed on touch panel 65 and a touch or gesture input (hereinafter referred to as "user input") made by the user to touch touch panel 65, and transmits a control signal based on the user input to a lighting fixture 4 to be controlled.

As shown in FIG. 2(b), the smartphone 6 includes a control unit 61, a ROM 62, a RAM 63, a wireless communication unit 64, and a touch panel 65.

<ROM62>
The ROM 62 is configured from a flash memory or the like, and holds various data including applications, programs, and image data to be displayed as a GUI.

The ROM 62 holds a correspondence table between the chromaticity when the light source unit 40 emits light and the dimming rate of each LED package 42 to achieve that chromaticity. The ROM 62 also stores the dimming rate designated by the user and information on the lighting fixtures 4 that belong to each group when the lighting fixtures 4 are divided into groups.

<RAM63>
The RAM 63 is a storage device into which the lighting control program stored in the ROM 62 is loaded.

<Touch Panel 65>
The touch panel 65 is an electronic component that combines a display unit that displays images and information constituting the GUI with an input unit that accepts user instructions, and functions as a user interface means. The display unit is, for example, a liquid crystal panel. The input unit is, for example, a touch pad. The touch panel 65 notifies the control unit 61 of the user input.

<Control Unit 61>
The control unit 61 includes a CPU (Central Processing Unit). Each function of the smartphone 6 is realized by the control unit 61 executing a lighting control program loaded from the ROM 62 and stored in the RAM 63. The control unit 61 identifies the content of a user instruction based on the GUI displayed on the touch panel 65 and a user input notified from the touch panel 65, and executes a process according to the user instruction.

<Wireless communication unit 64>
The wireless communication unit 64 is configured with a device that performs wireless communication. The wireless communication unit 64 performs wireless communication with each of the lighting fixtures 4.

In the smartphone 6, it is not necessary to store the GUI and the like in the ROM 62 in advance, and an app capable of displaying the GUI may be downloaded from a server and stored in the ROM 62. In other words, by downloading an app to a smartphone distributed on the market, the smartphone can be used as a user interface means.

1.2. GUI
Below, we will explain each of the GUIs displayed on the smartphone 6 to control each lighting fixture 4 used in the lighting system 1.

<1.2.1. Grouping GUI 110>
In the lighting system 1, the lighting fixtures 4 are divided into a plurality of groups, and the lighting fixtures 4 belonging to the same group can be dimmed and adjusted in color so as to emit light with the same dimming rate and the same chromaticity.

Figure 4(a) shows a group editing GUI 110 for associating lighting fixture 4 with a group.

The GUI 110 includes a cancel button 112a, a save button 112b, a group name display section 112c, and lighting fixture selection buttons 113, 114, ..., 115.

Each of the lighting fixture selection buttons 113, 114, ..., 115 corresponds to a lighting fixture that can communicate with the smartphone 6. The GUI 110 displays the lighting fixture selection buttons 113, 114, ..., 115 corresponding to each of the lighting fixtures 4 that can wirelessly communicate with the smartphone 6. The GUI 110 displays as many lighting fixture selection buttons as there are lighting fixtures 4 that can communicate with the smartphone 6. However, if it is not possible to display all of the lighting fixture selection buttons at once due to limitations in the size of the display area of the touch panel, a predetermined number of lighting fixture selection buttons may be displayed at a time, and the displayed lighting fixture selection buttons may be switched by scrolling or the like.

The lighting fixture selection button 113 includes a check box 113a, a lighting fixture ID 113b, and a channel number 113c.

The check box 113a is used by the user to include the lighting fixture 4 corresponding to the lighting fixture selection button 113 in a group. Each time the user touches the check box 113a, the display toggles between a checked state and an unchecked state. In the checked state, for example, a "check" mark is displayed within a rectangular frame. When the user wants to include the lighting fixture corresponding to the lighting fixture selection button 113 in a group, the user checks the check box 113a.

The lighting fixture ID 113b indicates an ID for identifying the lighting fixture corresponding to the lighting fixture selection button 113. In this embodiment, the lighting fixture ID is "ID15" as an example.

The number of channels 113c indicates the number of channels of the control signal for controlling the light source unit 40 of the lighting fixture corresponding to the lighting fixture selection button 113. An LED package of one color is controlled by a control signal of one channel, and to control an LED package of two or more colors, the same number of channels as the number of colors are required.

The save button 112b is a button for instructing the user to save the information about which lighting fixtures 4 belong to which group, which information was set using the GUI 110, and when the user touches this button, the information is stored in the ROM 62.

The cancel button 112a is a button for discarding the settings made using the GUI 110 without saving them.

Group name 112c indicates the name given to the group to be set. Group name 112c is editable, and when the user touches it, a software keyboard or the like for editing is displayed. The user uses the software keyboard to input and save the group name.

<1.2.2. Group switching GUI 120>
FIG. 4B shows a GUI 200 of normal specifications (see FIG. 8) for adjusting the brightness and color of a group, and a GUI 120 for calling up a GUI 130 of performance specifications (see FIG. 5).

The standard GUI here is a GUI that allows the user to specify a chromaticity that follows the blackbody radiation locus when specifying the chromaticity of the light emitted by the lighting fixture. The performance GUI is a GUI that allows the user to select chromaticities that do not follow the blackbody radiation locus in addition to chromaticities that follow the blackbody radiation locus when specifying the chromaticity of the light emitted by the lighting fixture. As an example, the GUI has multiple color setting buttons that correspond to multiple chromaticities when the lighting fixture 4 emits light and that, when touched by the user, emit light at the corresponding chromaticity, and each of the color setting buttons is at least partially colored in a color that mimics the corresponding chromaticity.

The GUI 120 includes a normal specification display panel 123 and a performance specification display panel 124. When the normal specification display panel 123 is touched by a user, the screen transitions to display the normal specification GUI 200 (see FIG. 8), and when the performance specification display panel 124 is touched by a user, the screen transitions to display the performance specification GUI 130 (see FIG. 5).

The standard specification display panel 123 includes a dimming rate display bar 123a, a cursor 123b, a color temperature display section 123c, and a dimming rate display section 123d.

The dimming rate display bar 123a indicates 0% at the left end and 100% at the right end, and the currently set dimming rate is indicated by the position of the cursor 123b on the dimming rate display bar 123a. The dimming rate display section 123d indicates the currently set dimming rate as a numerical value. The color temperature display section 123c indicates the color temperature of the light emitted by the light source unit 40 according to the current setting as a numerical value (for example, "4000K (Kelvin)").

The performance specification display panel 124 includes a dimming rate display bar 124a, a cursor 124b, a color temperature display section 124c, and a dimming rate display section 124d.

The dimming rate display bar 124a indicates 0% at the left end and 100% at the right end, and the currently set dimming rate is indicated by the position of the cursor 123b on the dimming rate display bar 124a. The dimming rate display section 124d indicates the currently set dimming rate as a numerical value. The color temperature display section 123c is a circular image, and its color indicates the color temperature of the light emitted by the light source unit 40 according to the current setting.

<1.2.3. Performance specification GUI 130>
FIG. 5 is a diagram showing a GUI 130 of performance specifications for adjusting the light and color.

As shown in FIG. 5, the GUI 130 includes a color selection area 131, a switching section 132, a dimming rate selection section 135, a horizontal color selection section 137, and a vertical color selection section 139.

The color selection area 131 is made up of a rectangular frame and a predetermined number (for example, 11 x 11) of circular color setting buttons 131a, 131b, 131c, 131d, ..., 131h ... (hereinafter collectively referred to as "color setting buttons 131X") arranged in a rectangular matrix.

It is desirable to limit the number of color setting buttons arranged in the color selection area 131 so that the options available to the user are not too few, but not so many that the user is confused about which one to choose. For this reason, it is desirable to have between 5 x 5 and 15 x 15 color setting buttons.

The color setting button 131X corresponds to the chromaticity of the light emitted by the light source unit 40 of the lighting device 4. By touching the color setting button 131X, the user can cause the light source unit 40 of the lighting device 4 to emit light with the chromaticity that is pre-assigned to the color setting button 131X.

The color setting button 131X corresponds to the chromaticity at which the light source unit 40 emits light, or more precisely, to a control signal output to the light source unit 40 to emit light at that chromaticity. That is, each color setting button 131X corresponds to a control signal corresponding to the current value supplied to each of the bluish-white LED 42c, red LED 42b, and yellowish-white LED 42a, and a correspondence table of these is stored in ROM 62.

When the touch panel 65 detects that the user has touched the color setting button 131X on the smartphone 6, it notifies the control unit 61 of the touched color setting button 131X. The control unit 61 refers to a correspondence table stored in ROM 62 between the chromaticity corresponding to the button and the control signal, reads out the control signal corresponding to the touched color setting button 131X, and transmits it to the lighting device 4 to be controlled using the wireless communication unit 64. The lighting device 4 that receives the control signal causes the light source unit 40 to emit light with a chromaticity corresponding to the control signal.

<Layout of color setting button 131X>
Here, the arrangement of the color setting buttons 131X in the rectangular matrix will be described. In the rectangular matrix of the color selection area 131, a color setting button 131a is arranged in the lower right corner, a color setting button 131b in the upper right corner, a color setting button 131c in the upper left corner, and a color setting button 131d in the lower left corner.

The color setting button 131a corresponds to the chromaticity coordinates of the light color when only the red LED 42b is turned on, and is associated with a control signal that turns on only the red LED 42b. When the user touches the color setting button 131a, only the red LED 42b in the light source unit 40 turns on.

The color setting button 131b corresponds to the chromaticity coordinates of the light color when only the blue-white LED 42c is turned on, and is associated with a control signal that turns on only the blue-white LED 42c. When the user touches the color setting button 131b, only the blue-white LED 42c in the light source unit 40 turns on.

The color setting button 131c corresponds to the chromaticity coordinates of the light color when only the yellow-white LED 42a is turned on, and is associated with a control signal that turns on only the yellow-white LED 42a. When the user touches the color setting button 131c, only the yellow-white LED 42a in the light source unit 40 turns on.

The color setting button 131d corresponds to the chromaticity coordinates of the midpoint between the chromaticity coordinates corresponding to the color setting button 131a and the chromaticity coordinates corresponding to the color setting button 131c, and corresponds to a control signal that turns on the red LED 42b and the yellow-white LED 42a at the same dimming rate. When the user touches the color setting button 131d, the red LED 42b and the yellow-white LED 42a in the light source unit 40 turn on at the same dimming rate.

As shown in FIG. 5, nine color setting buttons are arranged between adjacent color setting buttons located at the four corners of the rectangle in the color selection area 131. The chromaticity associated with the color setting button (for convenience, referred to as the "third color setting button") between adjacent color setting buttons (for convenience, referred to as the "first color setting button" and the "second color setting button") located at the four corners of the rectangle in the color selection area 131 corresponds to each chromaticity coordinate obtained by equally dividing (in this embodiment, by 10) the line connecting the chromaticity coordinates corresponding to the first color setting button and the chromaticity coordinates corresponding to the second color setting button on the chromaticity diagram shown in FIG. 3.

For example, as shown in FIG. 5, nine color setting buttons, including color setting button 131h, are arranged between color setting button 131a and color setting button 131b. Each color setting button corresponds to a point that divides the line connecting the chromaticity coordinates (0.60.0.38) of the red LED 42b corresponding to color setting button 131a and the chromaticity coordinates (0.23, 0.26) of the blue-white LED 42c corresponding to color setting button 131b into ten equal parts in the chromaticity coordinates of FIG. 3. Color setting button 131h corresponds to the chromaticity coordinates of the point closest to the chromaticity coordinates (0.60.0.38) among the nine points that divide the line connecting both chromaticity coordinates into ten equal parts.

Here, in the chromaticity diagram, the chromaticity near the chromaticity coordinates of the chromaticity when the red LED 42b and the yellow-white LED 42a are each turned on at the same dimming rate is easily discernible by the user. Therefore, by associating the chromaticity when the red LED 42b and the yellow-white LED 42a are each turned on at the same dimming rate with the color setting button 131d, it is possible to provide detailed options within the color selection area 131 for multiple chromaticities near the chromaticity coordinates whose differences are easily discernible by the user. Therefore, the GUI 130 is a user interface that makes it easy for the user to select the desired chromaticity.

The setting of the color setting button 131d does not necessarily have to correspond to the chromaticity when the red LED 42b and the yellow-white LED 42a are turned on at the same dimming rate. For example, if the light source unit 40 of the lighting device 4 has LED packages of four different colors instead of three colors as described above, the setting may correspond to the chromaticity when any of the four LED packages emits light, or more precisely, to the control signal output to the light source unit 40 to emit light at that chromaticity, and each of the four LED packages may correspond to a color setting button at each of the four corners of the rectangular matrix of the color selection area 131.

In addition, when the light source unit 40 includes multiple LED packages, each LED package of each color may be associated with one of the color setting buttons in the rectangular matrix of the color selection area 131.

Similarly, when the first color setting button and the second color setting button are not located at the four corners, the chromaticity of the Kth (K is any value from 1 to 9) color setting button located between the first color setting button and the second color setting button, counting from the first color setting button, corresponds to the Kth chromaticity coordinate counting from the chromaticity coordinate of the first color setting button among the chromaticity coordinates on the chromaticity diagram of the first color setting button and the chromaticity coordinates on the chromaticity diagram of the second color setting button, which are connected by a straight line and divided equally by the number of color setting buttons located between the first color setting button and the second color setting button + 1.

Each color setting button 131X is filled with the color of an image that allows the user to intuitively grasp the color of light emitted by the light source unit 40 when the color setting button 131X is touched.

Figure 6 shows the colors of the images of the color setting buttons 131X in the rectangular matrix of the color selection area 131 in RGB format. Each color setting button 131X is associated with an RGB value. Gm (m is 0 to 10) in Figure 6 indicates the horizontal position of the color setting button 131c in the upper left corner of the matrix, and Pn (n is 0 to 10) indicates the vertical position of the color setting button 131c in the upper left corner of the matrix. For example, color setting button 131h corresponds to the intersecting column of G10 and P9, and is represented by R being 255, G being 57, and B being 40.

Note that the ... in Figure 6 indicates that values actually exist in columns G2 to G8, rows P2 to P8, and parts of rows P1 and P9, but are omitted in Figure 6.

As shown in FIG. 5, the switching unit 132 includes a normal performance switching button 132a, a recommendation button 132b, and an area for displaying the group name. In the case of GUI 130, the group name is "large conference room group."

The cursor 131e is an image that surrounds the color setting button to clearly indicate which color setting button has been selected by the user's touch.

The normal performance switching button 132a is a button for switching from the display of the GUI 130 with the performance specifications to the display of the GUI 200 with the normal specifications. When touched by the user, the display switches to the GUI 200 with the normal specifications.

When the user touches the recommendation button 132b, a GUI 150 (see FIG. 7) that displays a recommendation list is displayed as a pop-up. Note that the GUI 150 does not necessarily have to be displayed as a pop-up, and may be displayed by switching to the display of the GUI 150.

The dimming rate selection section 135 is a UI that allows the user to specify a desired dimming rate, and includes a dimming rate bar 135a, a dimming rate display mark 135b, a dimming rate value display section 135c, an increase button 135d, a decrease button 135e, a rapid increase button 135f, and a rapid decrease button 135g.

When the user specifies a dimming ratio using the dimming ratio selection unit 135, the smartphone 6 notifies the lighting device 4 to be controlled of the specified dimming ratio, and the lighting device 4 causes the light source unit 40 to emit light at the specified dimming ratio.

As shown in FIG. 5, the dimming rate bar 135a is an image showing dimming rates from 0 to 100%, and the position where the dimming rate display mark 135b is arranged on the dimming rate bar 135a indicates the dimming rate that is set. FIG. 5 shows an example where the dimming rate is 77%. The position of the dimming rate display mark 135b on the dimming rate bar 135a can be changed by the user touching the dimming rate bar 135a, or by the user touching and dragging the dimming rate display mark 135b to change its position on the dimming rate bar 135a.

The dimming rate value display unit 135c displays the set dimming rate value numerically and also functions as a UI for changing the dimming rate.

Specifically, when the user touches the dimming rate value display section 135c, a software keyboard for inputting a numerical value is displayed. The user can specify the dimming rate by inputting the value of the dimming rate using the software keyboard, and the specified dimming rate is displayed as a numerical value on the dimming rate value display section 135c.

Here, when the user changes the dimming rate by moving the dimming rate display mark 135b, the dimming rate displayed by the dimming rate value display unit 135c also changes accordingly, and when the dimming rate is changed using the dimming rate value display unit 135c, the position of the dimming rate display mark 135b on the dimming rate bar 135a changes accordingly to indicate the specified dimming rate.

The increase button 135d, the decrease button 135e, the rapid increase button 135f, and the rapid decrease button 135g increase the dimming rate set in the dimming rate value display unit 135c by 1%, decrease the dimming rate by 1%, increase the dimming rate by 10%, and decrease the dimming rate by 10%, respectively.

The color selection unit 137 is a UI for changing the color setting button specified in the color selection area 131 to the color setting button adjacent in the horizontal direction. When the color setting button specified by the color selection unit 137 is changed, the light source unit 40 of the lighting device 4 emits light with the chromaticity indicated by the changed color setting button, in the same way as when the color setting button 131X is touched by the user as described above.

The color selection section 137 includes a horizontal position display section 137a, a decrease button 137b, and an increase button 137c.

The horizontal position display section 137a shows the horizontal position of the selected color setting button in the color selection area 131.

The decrease button 137b and the increase button 137c are buttons that respectively select the color setting button to the left and the color setting button to the right of the currently selected color setting button.

Each time the user touches the decrease button 137b, the color setting button to the left of the currently selected color setting button is selected, the position of the cursor 131e decreases by 1 in the horizontal direction so as to surround the selected color setting button, and in conjunction with this, the value displayed by the horizontal position display section 137a decreases by 1.

In addition, each time the user touches the increment button 137c, the color setting button to the right of the currently selected color setting button is selected, the position of the cursor 131e increases by 1 in the horizontal direction so as to surround the selected color setting button, and in conjunction with this, the value displayed by the horizontal position display section 137a increases by 1.

The color selection unit 139 is a UI portion for changing the color setting button specified in the color selection area 131 to the color setting button above or below in the vertical direction. When the color setting button specified by the color selection unit 139 is changed, the light source unit 40 of the lighting device 4 emits light with the chromaticity indicated by the changed color setting button, in the same way as when the color setting button 131X is touched by the user as described above.

The color selection section 139 includes a vertical position display section 139a, a decrease button 139c, and an increase button 139b.

The vertical position display section 139a shows the vertical position of the cursor 131e of the selected color setting button in the color selection area 131.

The decrease button 139c and the increase button 139b are buttons that respectively select the color setting button below and the color setting button above the currently selected color setting button.

Each time the user touches the decrease button 139c, the color setting button below the currently selected color setting button is selected, the position of the cursor 131e decreases by 1 in the vertical direction so as to surround the selected color setting button, and in conjunction with this, the number displayed by the vertical position display section 139a decreases by 1.

In addition, each time the user touches the increment button 139b, the color setting button above the currently selected color setting button is selected, the position of the cursor 131e is incremented by 1 in the vertical direction so as to surround the selected color setting button, and in conjunction with this, the value displayed by the vertical position display section 139a is incremented by 1.

1.2.4. Recommendation List GUI 150
The recommendation list GUI 150 is a GUI that presents several chromaticities that are recommended for selection by the user and allows the user to select them. Since the options are narrowed down in advance, the user can easily select a chromaticity without the burden of selecting one from a large number of options.

As shown in FIG. 7, GUI 150 includes panels 151a to 151h (hereinafter collectively referred to as "panel 151"), a cancel button 153a, and a confirm button 153b.

The panels 151a to 151h are each associated with a chromaticity and dimming ratio when the light source unit 40 emits light, or more precisely, a control signal to be output to the light source unit 40 to emit light at that chromaticity and dimming ratio. In addition, it is preferable that the panels 151a to 151h correspond to a chromaticity associated with one of the color selection buttons in the color selection area 131.

When the user touches any of the panels 151a to 151h, the corresponding control signal is sent to the lighting fixture 4 to be controlled. The lighting fixture 4 that receives the control signal causes the light source unit 40 to emit light with a chromaticity and dimming rate according to the control signal. At this time, the dimming rate and chromaticity specified by the user are not stored, and the state is one in which the dimming rate and chromaticity have been temporarily changed to the specified dimming rate and chromaticity (preview state). When the confirm button 153b is touched in the preview state, the specified dimming rate and chromaticity are stored. When the cancel button 153a is touched, the dimming rate and chromaticity are returned to the stored previous preview state, the display of the GUI 150 disappears, and the display of the original GUI 130 is restored.

When the user touches any of panels 151a to 151h, that panel is selected by the user, and the panel's color changes, for example by going dark, to clearly indicate which panel is selected. When the user touches a selected panel again in a selected state, the panel is deselected. Each time the user touches a panel, it toggles between the selected state and the deselected state.

The panel 151a includes a color display section 151aa, a horizontal coordinate section 151ab, a vertical coordinate section 151ac, a dimming ratio section 151ad, and a color description section 151ae.

The color display section 151aa is a circular painted image that represents the chromaticity of the light emitted by the light source section 40 when the panel 151a is touched, in an image color that the user can intuitively grasp.

The horizontal coordinate section 151ab represents the horizontal position of the color selection button in the color selection area 131 to which the panel 151a is associated, and corresponds to Gm described above.

The vertical coordinate section 151ac represents the vertical position of the color selection button in the color selection area 131 to which the panel 151a is associated, and corresponds to Pn described above.

The dimming rate section 151ad represents the dimming rate when the light source section 40 emits light when the panel 151a is touched.

The color description section 151ae is a section that describes the color displayed in the color display section 151aa by comparing it to objects or phenomena with similar colors so that people can easily recognize it.

Note that panels 151b to 151h have the same configuration as panel 151a.

<1.2.5. Standard specification GUI 200>
The normal specification means that the chromaticity when the light source unit 40 emits light is changed between a chromaticity corresponding to a low color temperature and a chromaticity corresponding to a high color temperature along the blackbody locus. The smartphone 6 holds a database in the ROM 62 that associates each color temperature with a chromaticity, and can convert between color temperature and chromaticity.

Figure 8 shows a standard GUI 200 for adjusting brightness and color.

As shown in FIG. 8, the GUI 200 includes a color selection area 201, a switching section 202, a dimming rate selection section 205, a color temperature selection section 207, a preview button 203a, and a decision button 203b.

The user can use the color selection area 201 and the color temperature selection section 207 to specify the color temperature at which the light source unit 40 emits light, and can use the color selection area 201 and the dimming rate selection section 205 to specify the dimming rate at which the light source unit 40 emits light.

Here, the light source unit 40 of the lighting fixture 4 does not immediately emit light with the dimming ratio and color temperature specified by the user. When the preview button 203a is touched, the light source unit 40 emits light with the specified dimming ratio and color temperature. At this time, the dimming ratio and color temperature specified by the user are not stored, and the state is a state (preview state) in which the dimming ratio and color temperature are temporarily changed to the specified dimming ratio and color temperature. When the decision button 203b is touched in the preview state, the specified dimming ratio and color temperature are stored, and a control signal for emitting light with the dimming ratio and color temperature corresponding to the position of the cursor 201a is transmitted from the smartphone 6 to the lighting fixture 4 to be controlled, and the lighting fixture 4 emits light from the light source unit 40 with the received dimming ratio and color temperature. On the other hand, when the preview button 203a is touched in the preview state, the dimming ratio and color temperature are returned to the stored dimming ratio and color temperature before the preview state.

The color selection area 201 is a rectangular color selection area, with the left side as you face the page corresponding to a low color temperature and the right side as you face the page corresponding to a high color temperature, and is colored with colors that represent the color temperatures diagrammatically.

As an example, the color selection area 201 is colored dark orange on the left side as you face the paper, and dark blue on the right side as you face the paper, with a gradation from dark orange to light orange, light blue, and dark blue.

The cursor 201a indicates the dimming rate at which the light source unit 40 emits light depending on the vertical position of the color selection area 201, and indicates the color temperature at which the light source unit 40 emits light depending on the horizontal position of the color selection area 201. When the user touches within the color selection area 201, the cursor 201a is displayed at that position.

The dimming rate selection section 205 is a UI that allows the user to specify a desired dimming rate, and includes a dimming rate bar 205a, a dimming rate display mark 205b, a dimming rate value display section 205c, an increase button 205d, a decrease button 205e, a rapid increase button 205f, and a rapid decrease button 205g.

When a dimming ratio is specified by the user using the dimming ratio selection unit 205, the smartphone 6 notifies the lighting device 4 to be controlled of the specified dimming ratio, and the lighting device 4 causes the light source unit 40 to emit light at the specified dimming ratio.

As shown in FIG. 8, the dimming rate bar 205a is an image showing a dimming rate of 0 to 100%, and the position where the dimming rate display mark 205b is arranged on the dimming rate bar 205a indicates the dimming rate to be set. In FIG. 8, a dimming rate of 80% is shown as an example. The position of the dimming rate display mark 205b on the dimming rate bar 205a can be changed by the user touching the dimming rate bar 205a, or by the user touching and dragging the dimming rate display mark 205b.

The dimming rate value display unit 205c is a UI that displays the currently specified dimming rate value as a number, and also functions as a UI for changing the dimming rate.

Specifically, when the user touches the dimming rate value display section 205c, a software keyboard for inputting a numerical value is displayed. The user can specify the dimming rate by inputting a value for the dimming rate using the software keyboard, and the specified dimming rate is displayed as a numerical value on the dimming rate value display section 205c.

Here, when the user changes the dimming rate by moving the dimming rate display mark 205b, the dimming rate displayed by the dimming rate value display unit 205c also changes accordingly, and when the dimming rate is changed using the dimming rate value display unit 205c, the position of the dimming rate display mark 205b on the dimming rate bar 205a changes accordingly to indicate the specified dimming rate.

The increase button 205d, the decrease button 205e, the rapid increase button 205f, and the rapid decrease button 205g increase the dimming rate by 1% when the light source unit 40 emits light, decrease the dimming rate by 1%, increase the dimming rate by 10%, and decrease the dimming rate by 10%, respectively.

The color temperature selection unit 207 is a UI for increasing or decreasing the selected color temperature. When the color temperature specified by the color temperature selection unit 207 is changed, the light source unit 40 of the lighting device 4 emits light with a chromaticity that corresponds to the changed color temperature.

The color temperature selection section 207 includes a color temperature bar 207a, a color temperature display mark 207b, a color temperature value display section 207c, an increase button 207d, a decrease button 207e, a rapid increase button 207f, and a rapid decrease button 207g.

The color temperature bar 207a is a UI that indicates color temperatures between 1800K and 12000K, and the position of the color temperature display mark 207b on the color temperature bar 207a indicates the specified color temperature. In FIG. 8, as an example, a case where the specified color temperature 80 is 5000K is shown. The position of the color temperature display mark 207b on the color temperature bar 207a can be changed by the user touching the color temperature bar 207a, or by the user touching and dragging the color temperature display mark 207b.

The color temperature value display unit 207c displays the currently specified color temperature value as a number.

The increase button 207d, the decrease button 207e, the rapid increase button 207f, and the rapid decrease button 207g increase the color temperature when the light source unit 40 emits light by 1%, decrease the color temperature by 1%, increase the color temperature by 10%, and decrease the color temperature by 10%, respectively.

The position of the dimming rate display mark 205b on the dimming rate bar 205a, the vertical position of the cursor 201a in the color selection area 201, and the value of the dimming rate value display section 205c, which indicate the dimming rate, are linked, so that if any one of them is changed, the others also change to indicate the same dimming rate.

In addition, the position of the color temperature display mark 207b on the color temperature bar 207a, the horizontal position of the cursor 201a in the color selection area 201, and the numerical value of the color temperature display section 207c, which indicate the color temperature, are linked, so that changing any one of them also changes the others to indicate the same color temperature.

As shown in FIG. 8, the switching unit 202 includes a normal performance switching button 202a, a recommendation button 202b, and an area for displaying the group name. In the case of GUI 200, the group name is "large conference room group."

The normal performance switching button 202a is a button for switching from the normal specification GUI to the performance specification GUI. When touched by the user, the display switches to the performance specification GUI 130.

When the user touches the recommendation button 202b, a GUI 250 (see FIG. 9) is displayed that displays a recommendation list.

When the user touches the Details button 202c, a GUI 280 (see Figure 10) is displayed for fine-tuning the color.

1.2.6. Recommendation List GUI 250
The recommendation list GUI 250 is a GUI that presents several color temperatures that are recommended for the user to select and allows the user to select one. Since the options are narrowed down in advance, the user can easily select a color temperature without the burden of selecting one from a large number of options.

As shown in FIG. 9, GUI 250 includes panels 251a to 251h (hereinafter collectively referred to as "panel 251"), a cancel button 253a, and a decision button 253b.

Panels 251a to 251h are each associated with a color temperature and dimming rate at which the light source unit 40 emits light, or more precisely, a control signal that is output to the light source unit 40 to emit light at that color temperature and dimming rate.

When the user touches any of the panels 251a to 251h, the corresponding control signal is sent to the lighting fixture 4 to be controlled. The lighting fixture 4 that receives the control signal causes the light source unit 40 to emit light at a color temperature and dimming rate according to the control signal. At this time, the dimming rate and color temperature specified by the user are not stored, and the state is a preview state in which the dimming rate and color temperature are temporarily changed to the specified dimming rate and color temperature. When the confirm button 253b is touched in the preview state, the specified dimming rate and color temperature are stored. When the cancel button 253a is touched, the dimming rate and color temperature are returned to the stored previous preview state, the display of the GUI 250 disappears, and the display of the original GUI 200 is restored.

In addition, when the user touches any of panels 251a to 251h, it is selected by the user, and the panel's color changes, for example by going dark, to clearly indicate which panel has been selected.

When a panel is selected, touching it again will deselect it. Each time the user touches the panel, it toggles between selected and deselected states.

The panel 251a includes a color display section 251aa, a dimming ratio section 251ab, and a color description section 251ac.

The color display section 251aa is an image that indicates the color temperature emitted by the light source section 40 as a numerical value within a rectangular area when the panel 251a is touched, and is painted in a color that allows the user to intuitively grasp the color temperature.

The dimming rate section 251ab represents the dimming rate when the light source section 40 emits light when the panel 251a is touched.

The color description section 251ac is a section that describes the color displayed in the color display section 251aa by comparing it to objects or phenomena with similar colors so that people can easily recognize it.

Note that panels 251b to 251h have the same configuration as panel 251a.

<1.2.7. Color Tint Adjustment GUI 280>
The color fine-tuning GUI 280 is a GUI for fine-tuning the color of the currently specified color, and can change the Duv (color deviation) of the color indicated by the cursor 201a of the normal specification GUI 200. Here, Duv indicates how far the color is above or below the blackbody radiation locus, and if the color deviation is shifted upward (plus), the light color appears greenish, and if it is shifted downward (minus), the light color appears reddish purple.

GUI 280 includes color buttons 281a to 281e, a cancel button 283b, and a confirm button 283a.

The color buttons 281a to 281h correspond to a control signal that increases Duv by 6, a control signal that increases Duv by 3, a control signal that does not increase or decrease Duv, a control signal that decreases Duv by 3, and a control signal that decreases Duv by 6, respectively.

When the user touches any of the panels 281a to 281h, the Duv of the color emitted by the lighting fixture 4 changes according to the control signal associated with the touched panel, but this Duv is not stored. When the decision button 283a is touched, the Duv is stored, and when the cancel button 283b is touched, the lighting returns to the originally stored Duv.

When the user touches an area on the touch panel 65 other than the area where the color fine-tuning GUI 280 is displayed, the display of GUI 280 disappears and the display returns to the original GUI 200.

Note that the color fine-tuning GUI 280 is called up from the normal specification GUI 200, but this is not limited to the above, and it may be possible to call it up from other GUIs that select chromaticity, such as the rendering specification GUI 130.

3. Modifications
Although the embodiment of the lighting device according to the present invention has been described above, the description of the above embodiment should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims, not by the above embodiment. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims. The exemplified lighting device can be modified as follows, and the present invention is of course not limited to the lighting device as shown in the above embodiment.

(1) In the above embodiment, switching between the display of GUI 130 with the performance specifications and the display of GUI 200 with the normal specifications was performed using the normal performance switching button 132a provided on GUI 130 and the normal performance switching button 202a provided on GUI 200, but this is not limited to this and may be performed in other ways. For example, a selection GUI 300 for selecting the display of GUI 130 and GUI 200, as shown in FIG. 11, may be used.

The GUI 300 includes a normal specification selection button 301a, a performance specification selection button 301b, a cancel button 303a, a normal specification GUI thumbnail image 305a, and a performance specification GUI thumbnail image 305b.

When the user touches the normal specification selection button 301a, GUI 200 is displayed. When the user touches the performance specification selection button 301b, GUI 130 is displayed. The cancel button 303a is a button for hiding the display of GUI 300.

The normal specification GUI reduced image 305a is a reduced image of the normal specification GUI 130, and is an image that allows the user to recognize what kind of GUI will be displayed when the normal specification selection button 301a is touched.

The performance specification GUI thumbnail image 305b is a thumbnail image of the performance specification GUI 200, and is an image that allows the user to recognize what kind of GUI will be displayed when the performance specification selection button 301b is touched.

(2) In the above embodiment, the lighting system 1 has multiple lighting fixtures that are directly controlled by the smartphone 6, but this is not limited to the above, and the lighting fixtures may be indirectly controlled. For example, as shown in FIG. 12, the lighting system 1 may be configured as a lighting system 501 that includes a gateway 508, which is a control device that is constantly powered.

In this way, even if the smartphone 6 cannot directly send a control signal to the lighting fixture 4, such as when the smartphone 6 is taken out and not within the communication range of the lighting fixture 4, the gateway 508 can store a dimming and color adjustment change schedule and send control signals for dimming and color adjustment to each lighting fixture 4 according to the schedule, thereby dimming and adjusting the color of the lighting fixture 4. When creating a change schedule to be stored in the gateway 508, the user can use the GUI described above to set the chromaticity, color temperature, and dimming rate of the light emitted by the lighting fixture 4 for each time period.

(3) In the above embodiment, the lighting fixture 4 may be attached to a ceiling, a wall, or under a shelf. In addition, multiple lighting fixtures 4 may be connected together.

(4) In the above embodiment, an LED is used as the light source, but this is not limiting and other light sources may be used. For example, an organic electroluminescence (EL) or organic LED (organic electroluminescence or organic light emitting diode), a field emission display, etc. may be used.

(5) The above-described embodiments and variations may be partially combined.

4. Extraction of inventions
The configuration of a lighting fixture according to one embodiment of the present invention, as well as modifications and effects thereof, will be described below.

(1) A lighting control device according to one embodiment of the present invention is a lighting control device that displays on a touch panel a graphical user interface for controlling a lighting device having LED packages of multiple colors, and the graphical user interface can be switched between a normal graphical user interface for changing the chromaticity of the light emitted by the lighting device along the blackbody radiation locus and a performance-specific graphical user interface that allows the selection of chromaticities that do not follow the blackbody radiation locus in addition to chromaticities that follow the blackbody radiation locus, and the performance-specific graphical user interface has a plurality of color setting buttons that correspond to a predetermined number of chromaticities when the lighting device emits light and that, when touched by a user, cause the corresponding chromaticity to be emitted, and each of the color setting buttons is at least partially colored with a color that imitates the corresponding chromaticity.

With the above-mentioned configuration, the lighting control device of the present invention has a graphical user interface for the performance specifications in which the chromaticity options are limited to a predetermined number, and each chromaticity can be recognized by an image of a color that imitates the chromaticity, allowing the user to easily select the desired chromaticity.

(2) The three color LED packages may be a red LED package, a yellow-white LED package, and a blue-white LED package, and in the graphical user interface of the performance specifications, the plurality of color setting buttons may be arranged in a rectangle, and at the three corners of the rectangle, a color setting button for causing only the red LED package to emit light, a color setting button for causing only the yellow-white LED package to emit light, and a color setting button for causing only the blue-white LED package to emit light may be arranged.

With this configuration, instead of having the user select the chromaticity within a triangle connecting the color coordinates of the three-color LED packages on a chromaticity diagram, the user can simply select one of the color setting buttons arranged in a rectangle, making it easy for the user to understand and select the desired chromaticity.

(3) In addition, a color setting button for causing only the red LED package and the yellow-white LED package to emit light at the same dimming rate may be provided at corners other than the three corners of the rectangle.

With this configuration, the chromaticity when the red LED package and the yellow-white LED package are made to emit light at the same dimming rate, which makes it easy for users to recognize differences in chromaticity, is included as a choice, making it easier for users to select the desired chromaticity.

(4) In addition, in the normal specification graphical user interface and the performance specification graphical user interface, a graphical user interface showing multiple options for the value to be changed for changing the value of the color deviation related to the light emission of the lighting device may be displayed.

This configuration allows the user to easily adjust the chromaticity they have selected to something closer to their desired one.

(5) A lighting system according to one embodiment of the present invention is a lighting system including a lighting fixture and a lighting control device, the lighting control device displays a graphical user interface for controlling a lighting fixture having a three-color LED package on a touch panel, and the graphical user interface can be switched between a normal graphical user interface for changing the chromaticity of the light emitted by the lighting fixture along the blackbody radiation locus and a performance-specification graphical user interface that allows the selection of chromaticities that do not follow the blackbody radiation locus in addition to chromaticities that follow the blackbody radiation locus, the performance-specification graphical user interface includes a plurality of color setting buttons that correspond to a predetermined number of chromaticities when the lighting fixture emits light and that, when touched by a user, emit light at the corresponding chromaticity, and each of the color setting buttons is at least partially colored with a color that imitates the corresponding chromaticity.

With this configuration, the chromaticity options in the graphical user interface for the performance specifications are limited to a predetermined number, and each chromaticity can be recognized by an image of a color that mimics the chromaticity, allowing the user to easily select the desired chromaticity.

Reference Signs List 1, 501 Lighting system 4, 4a, 4b, 4c, 4d Lighting equipment 6 Smartphone 40 Light source unit 41 Light source board 42 LED package 42a Yellow-white LED
42b Red LED
42c Blue-white LED
43 Circuit section 44 WM section 44a Wireless communication section 44b Control section 61 Control section 62 ROM
63 RAM
64 Wireless communication unit 65 Touch panel 110, 120, 130, 150, 200, 250, 280, 300 GUI
131, 201 Color selection area 131a, 131b, 131c, 131d, 131h Color setting button 131e, 201a Cursor 132 Switching section 137, 139 Color selection section 151a-151h, 251a-251h Panel 153b, 203b Confirmation button 202 Switching section 205 Dimming rate selection section 207 Color temperature selection section 508 Gateway

Claims (5)

A lighting control device that displays a graphical user interface on a touch panel for controlling a lighting device having a multi-color LED package,
the multi-color LED packages are a red LED package, a yellow-white LED package, and a bluish-white LED package;
the graphical user interface includes color setting buttons arranged in a rectangular matrix having five or more color setting buttons in each row and column, the color setting buttons causing the lighting device to emit light with a corresponding chromaticity when touched by a user;
At three corners of the rectangle, a color setting button for causing only the red LED package to emit light, a color setting button for causing only the yellow-white LED package to emit light, and a color setting button for causing only the bluish-white LED package to emit light are arranged,
A color setting button for causing the red LED package and the yellowish white LED package to emit light at the same dimming rate is disposed in a corner diagonally opposite to the color setting button for causing the bluish white LED package to emit light. 2. The lighting control device according to claim 1, wherein among three adjacent color setting buttons, the center color setting button corresponds to chromaticity coordinates on a line connecting the chromaticity coordinates corresponding to the color setting buttons on both sides. The lighting control device according to claim 1 , wherein the graphical user interface displays a graphical user interface showing a plurality of options for a value to be changed for changing the value of the color deviation related to the light emission of the lighting device. The lighting control device according to claim 1 , wherein the number of color setting buttons arranged in the rectangle is 15 or less vertically and 15 or less horizontally. A lighting system including a lighting fixture and a lighting control device,
the lighting control device displays, on a touch panel, a graphical user interface for controlling a lighting device including a plurality of color LED packages;
the multi-color LED packages are a red LED package, a yellow-white LED package, and a bluish-white LED package;
the graphical user interface includes color setting buttons arranged in a rectangular matrix having five or more color setting buttons in each row and column, the color setting buttons causing the lighting device to emit light with a corresponding chromaticity when touched by a user;
At three corners of the rectangle, a color setting button for causing only the red LED package to emit light, a color setting button for causing only the yellow-white LED package to emit light, and a color setting button for causing only the bluish-white LED package to emit light are arranged,
a color setting button for causing only the red LED package and the yellowish white LED package to emit light is disposed in a corner diagonally opposite to the color setting button for causing the bluish white LED package to emit light.