Lighting control device and lighting system

Abstract

A lighting control device and a lighting system are provided that make it easier for a user to select a desired chromaticity than conventionally possible. [Solution] The lighting control device is a lighting control device that displays on a touch panel a graphical user interface for controlling lighting fixtures equipped with three-color LED packages, 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-specific graphical user interface 130 that allows selection of chromaticities that do not follow the blackbody radiation locus as well as chromaticities that follow the blackbody radiation locus, and the performance-specific graphical user interface 130 has a plurality of color setting buttons 131 that correspond to a predetermined number of chromaticities when the lighting fixture emits light, and that, when touched by the user, cause light to be emitted 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.

Description

Technical Field

[0001] The present invention relates to a lighting control device for controlling a lighting fixture including a three-color LED package.

Background Art

[0002] In recent years, a GUI (Graphical User Interface) has been used to control the light emission of lighting fixtures. Patent Document 1 discloses a technique in which a chromaticity diagram is displayed as a GUI, a user selects a color coordinate that is a point thereon, and a lighting fixture emits light having a chromaticity corresponding to the color coordinate.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above technique, there are conceptually an infinite number of points that can be selected as color coordinates, and there is a problem that the user gets lost in the selection. Also, there is a problem that it is difficult to specify the same color coordinates when the user wants to select the previously selected color coordinates later.

[0005] In view of the above problems, an object of the present invention is to provide a lighting control device and a lighting system that make it easier for a user to select a desired chromaticity than in the prior art.

Means for Solving the Problems

[0006] In order to solve the above problems, a lighting control device according to the present invention is a lighting control device that displays a graphical user interface for controlling a lighting fixture including a plurality of color LED packages on a touch panel. As the graphical user interface, there are a normal specification graphical user interface for changing the chromaticity of the light emission of the lighting fixture along the blackbody radiation locus, and an effect specification graphical user interface that enables selection of chromaticities not along the blackbody radiation locus in addition to the chromaticities along the blackbody radiation locus, and the two can be switched and displayed. The effect specification graphical user interface corresponds to each of a predetermined number of chromaticities when the lighting fixture emits light, and includes a plurality of color setting buttons that emit light at the corresponding chromaticity when touched by the user. Each of the color setting buttons is at least partially colored with a color imitating the corresponding chromaticity.

Advantages of the Invention

[0007] With the above configuration, in the graphical user interface of the effect specification of the lighting control device according to the present invention, the selectable chromaticities are limited to a predetermined number, and each chromaticity can be recognized by an image of a color imitating the chromaticity. Therefore, the user can easily select a desired chromaticity.

Brief Description of the Drawings

[0008]

Figure 1

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Figure 12

Mode for Carrying Out the Invention

[0009] <1. First Embodiment> <1.1. Configuration> Hereinafter, an illumination system 1 according to an embodiment of the present invention will be described with reference to the drawings.

[0010] FIG. 1(a) is a diagram showing the overall configuration of an illumination system 1 according to an embodiment of the present invention. As shown in FIG. 1, the illumination system 1 includes a plurality of lighting fixtures 4a, 4b, 4c, ···, 4d (hereinafter collectively referred to as "lighting fixture 4"), and a smartphone 6 as an example of an illumination control device for controlling the lighting fixture 4.

[0011] Each of the plurality of lighting fixtures 4 and the smartphone 6 communicates wirelessly with each other. The wireless communication shall comply with, for example, the BLE (Bluetooth (Registered Trademark) Low Energy) standard. The lighting fixtures 4 and the smartphone 6 form a mesh network, and each can communicate indirectly through the mesh network within the range of the mesh network even when outside the wireless reach or when there are obstacles preventing the wireless signal from reaching. For example, as shown in Fig. 1(a), when the smartphone 6 cannot directly establish wireless communication with the lighting fixture 4d but can directly establish wireless communication with the lighting fixture 4b, it can communicate indirectly with the lighting fixture 4d via the lighting fixtures 4b, 4c, etc. using the mesh network.

[0012] Each lighting fixture 4 is equipped with a three-color LED (Light Emitting Diode) package as an example of multiple colors, and the chromaticity changes when the lighting fixture 4 emits light depending on the balance of the dimming rates (hereinafter referred to as "package dimming rates") of each LED package. That is, the smartphone 6 stores the package dimming rates of each of the three-color LEDs when the lighting fixture 4 emits light at a certain chromaticity. Also, the user can control the light emission state by specifying the dimming rate from 0% (off state) to 100% (fully lit state) for the lighting fixture 4. The dimming rate specified by this user is hereinafter referred to as the "specified dimming rate". When the smartphone 6 causes the lighting fixture 4 to emit light at a certain chromaticity, it controls each LED package to emit light at a dimming rate obtained by multiplying the specified dimming rate by the package dimming rate corresponding to that chromaticity. That is, even when the specified dimming rate is changed, the chromaticity when the lighting fixture 4 emits light does not change.

[0013] The smartphone 6 is equipped with a GUI for the user to specify the desired specified dimming rate and chromaticity, notifies the lighting fixture 4 of a control signal according to the chromaticity and specified dimming rate instructed by the user, and the lighting fixture 4 emits light according to the notified control signal. The smartphone 6 is equipped with a GUI that makes it easier for the user to select chromaticity than in the past, improving the convenience for the user.

[0014] In the following description, the term "dimming rate" refers to the "specified dimming rate" unless otherwise specified.

[0015] <1.1.1. Lighting fixture 4> Hereinafter, regarding the lighting fixture 4, the configuration of the lighting fixture 4a will be described. However, the configurations of the other lighting fixtures 4b, 4c... 4d of the lighting fixture 4 are the same.

[0016] As shown in Fig. 2(a), the lighting fixture 4a includes a light source unit 40, a circuit unit 43, and a WM (Wireless Module) unit 44.

[0017] <Light source unit 40> As shown in Fig. 1(b), the light source unit 40 includes a light source composed of an LED package 42 and a light source substrate 41 which is a circuit board for arranging the light source. Note that the light source only needs to function as a lighting light source and may be composed of other than LEDs such as an organic EL (Electro Luminescence) device. The light source unit 40 performs operations such as turning on, turning off, changing the dimming rate, and changing the chromaticity (also referred to as "color tuning") of the light source based on the input control signal.

[0018] <Chromaticity of LED> As the LED package 42, three types are used: a blue-white LED 42c "Bw", a red LED 42b "R", and a yellow-white LED 42a "Yw". Note that although Yw is a color close to yellow on the chromaticity diagram, when Bw and R are lit simultaneously, it also appears as a color close to green. Fig. 3 is the CIE1931 chromaticity coordinates for explaining the chromaticity of these LEDs, and the line connecting the chromaticities of blackbody radiation at each color temperature (hereinafter referred to as the "blackbody radiation locus") is shown by a dashed line for reference.

[0019] Bw, which is the blue-white LED 42c, emits light with a chromaticity in the range surrounded by (0.336, 0.24), (0.352, 0.44), (0.15, 0.2), and (0.2, 0.1) on the chromaticity coordinates of Fig. 3, and is, for example, (0.23, 0.26).

[0020] R, which is the red LED 42b, emits light at chromaticities within the range enclosed by the chromaticity boundary line E and the points (0.66, 0.23), (0.423, 0.355), and (0.5, 0.5) in the chromaticity coordinates of FIG. 3, and is, for example, (0.60, 0.38). Note that this is not the same as the general definition of red.

[0021] Yw, which is the yellow-white LED 42a, emits light at chromaticities within the range enclosed by the chromaticity boundary line E and the points (0.5, 0.5), (0.423, 0.355), (0.342, 0.312), (0.352, 0.44), and (0.37, 0.63) in the chromaticity coordinates of FIG. 3, and is, for example, (0.44, 0.47).

[0022] Within the chromaticity range of Yw, it is preferable that the duv (color deviation) be within the range where it is positive from the blackbody radiation locus at each color temperature, and it is particularly preferable that duv be from +0.03 to 0. Among the chromaticity ranges of Bw and R, it is particularly preferable that duv be within the range from +0.03 to -0.03 from the line connecting the chromaticities of the blackbody radiation at each color temperature.

[0023] Note that it can also be expressed in terms of the chromaticity coordinates (u', v') in CIE1976 instead of the chromaticity coordinates (x, y) in CIE1931, and the two can be mutually converted by the conversion formula u' = 4x / (-2x + 12y + 3), v' = 9y / (-2x + 12y + 3). It may also be expressed in other chromaticity coordinate systems.

[0024] <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.

[0025] The circuit unit 43 converts commercial AC power into DC power and has three-channel drive outputs for independently operating three types of LED packages in the light source unit 40. Each drive output can be controlled by an external control signal. In this embodiment, the control signal is wirelessly transmitted and received by the WM unit 44. The WM unit 44 sends the control signal to the circuit unit 43, and the circuit unit 43 is controlled. By independently controlling the three-channel drive outputs with the control signal, the light source unit 40 can emit light at an arbitrary chromaticity surrounded by the chromaticities of the three LEDs.

[0026] <WM unit 44> The WM unit 44 is a module that performs wireless communication. It is configured as a detachable single device and is detachable from the socket of the circuit unit 43. Although the WM unit 44 is assumed to be capable of wireless communication according to a plurality of communication specifications, it is not limited thereto. For example, dedicated WM units 44 may be prepared for different communication specifications, and the WM unit 44 corresponding to the communication protocol to be used may be mounted on the socket. The WM unit 44 includes a wireless communication unit 44a and a control unit 44b.

[0027] <Wireless communication unit 44a> The wireless communication unit 44a has a function of performing wireless communication. The wireless communication unit 44a functions as a transmission means for transmitting information and a reception means for receiving information. The wireless communication unit 44a holds a Media Access Control address (hereinafter referred to as "MAC address") as an example of identification information. The MAC address is also used as an address for wireless communication.

[0028] When the wireless communication unit 44a receives communication data, if the communication data is addressed to its own device, 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.

[0029] <Control unit 44b> The control unit 44b includes an IC (Integrated Circuit) and has a function of controlling the operation of the lighting fixture 4.

[0030] When the control unit 44b receives an operation instruction regarding the operation of the light source, such as turning on, turning off, flashing, increasing the dimming rate, or decreasing the dimming rate of the light source, it outputs a control signal for causing the circuit unit 43 to perform the operation indicated by the operation instruction.

[0031] <1.1.2. Smartphone 6> The smartphone 6 is a portable information terminal device having a rectangular plate-like appearance as shown in Fig. 1(a), with a touch panel 65 fitted on one surface. The smartphone 6 has a function of controlling the light emission operation of the lighting fixture 4, and displays a GUI such as for controlling the light emission operation of the lighting fixture 4 on the touch panel 65. Based on the content of the GUI displayed on the touch panel 65 and the touch and gesture input (hereinafter referred to as "user input") to the touch panel 65 performed by the user, the smartphone 6 determines an instruction for the operation requested by the user, and transmits a control signal based on the user input to the control target among the lighting fixtures 4.

[0032] 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.

[0033] <rom62> The ROM 62 is composed of a flash memory or the like and holds various data in addition to application, program, and image data to be displayed as a GUI.

[0034] 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 for realizing the chromaticity. Further, the ROM 62 stores the designated dimming rate specified by the user and information on the lighting fixtures belonging to each group when the lighting fixture 4 is divided into groups.

[0035] <ram63> The RAM 63 is a storage device into which the lighting control program stored in the ROM 62 is loaded.

[0036] <Touch panel 65> The touch panel 65 is an electronic component that combines a display unit for displaying images and information constituting the GUI and an input unit for receiving user instructions, and functions as user interface means. The display unit is configured by, for example, a liquid crystal panel. Also, the input unit is, for example, a touch pad. The touch panel 65 notifies the control unit 61 of user input.

[0037] <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 the lighting control program loaded from the ROM 62 and stored in the RAM 63. The control unit 61 identifies the content of the user instruction based on the GUI displayed on the touch panel 65 and the user input notified from the touch panel 65, and executes processing according to the user instruction.

[0038] <Wireless communication unit 64> The wireless communication unit 64 is composed of a device that performs wireless communication. The wireless communication unit 64 performs wireless communication with each of the lighting fixtures 4.

[0039] In the smartphone 6, it is not necessary to pre-store the GUI etc. in the ROM 62, and it may be possible to download an app capable of GUI display from the server and store it in the ROM 62. That is, by downloading an app to a smartphone distributed in the market, this smartphone can be used as user interface means.

[0040] <1.2.GUI> Hereinafter, each GUI displayed on the smartphone 6 for controlling each lighting fixture 4 used in the lighting system 1 will be described.

[0041] <1.2.1. Grouping GUI 110> In the lighting system 1, the lighting fixtures 4 are divided into a plurality of groups, and the dimming and color control can be performed so that the lighting fixtures 4 belonging to the same group emit light with the same dimming rate and the same chromaticity.

[0042] Fig. 4(a) shows a group editing GUI 110 for belonging the lighting fixture 4 to a certain group.

[0043] The GUI 110 includes a cancel button 112a, a save button 112b, a group name display section 112c, lighting fixture selection buttons 113, 114, ···, 115.

[0044] The lighting fixture selection buttons 113, 114, ···, 115 each correspond to a lighting fixture that can communicate with the smartphone 6. In the GUI 110, the lighting fixture selection buttons 113, 114, ···, 115 corresponding to each of the lighting fixtures 4 that can wirelessly communicate with the smartphone 6 are displayed. Although the number of lighting fixture selection buttons corresponding to the lighting fixtures 4 that can communicate with the smartphone 6 is displayed on the GUI 110, when all the lighting fixture selection buttons cannot be displayed at once due to the limitation of the size of the display portion of the touch panel, they may be displayed in a predetermined number at a time, and the lighting fixture selection buttons to be displayed may be switched by scrolling or the like.

[0045] The lighting fixture selection button 113 includes a check box 113a, a lighting fixture ID 113b, and a channel number 113c.

[0046] The check box 113a is used for the user to make the lighting fixture 4 corresponding to the lighting fixture selection button 113 belong to a group. Each time the check box 113a is touched by the user, the display toggles between the checked state and the unchecked state. In the checked state, for example, a mark of "レ" is displayed within the rectangular frame. The user checks the check box 113a when wanting to include the lighting fixture corresponding to the lighting fixture selection button 113 in the group.

[0047] The lighting fixture ID 113b indicates the ID for identifying the lighting fixture corresponding to the lighting fixture selection button 113. In the present embodiment, as an example, the ID of the lighting fixture is "ID15".

[0048] The number of channels 113c indicates the number of channels of the control signal for controlling the light source unit 40 included in the lighting fixture corresponding to the lighting fixture selection button 113. A single-color LED package is controlled by a one-channel control signal, and for controlling an LED package of two or more colors, the same number of channels as the number of colors is required.

[0049] The save button 112b is a button for instructing to save information on which lighting fixtures 4 to belong to the group, which has been set using the GUI 110. When touched by the user, the information is stored in the ROM 62.

[0050] The cancel button 112a is a button for discarding the content set using the GUI 110 without saving it.

[0051] The group name 112c represents the name given to the group to be set. The group name 112c is editable. When touched by the user, a software keyboard or the like for editing is displayed. The user inputs and saves the group name using the software keyboard.

[0052] <1.2.2. Group switching GUI 120> FIG. 4(b) shows a GUI 120 for calling the normal-specification GUI 200 (see FIG. 8) and the effect-specification GUI 130 (see FIG. 5) for performing dimming and color adjustment for the group.

[0053] Here, the normal-specification GUI is a GUI that allows the user to specify a chromaticity along the blackbody radiation locus when specifying the chromaticity related to the light emission of the lighting fixture. The effect-specification GUI is a GUI that allows the user to select not only the chromaticity along the blackbody radiation locus but also chromaticities not along it when specifying the chromaticity related to the light emission of the lighting fixture. As an example, it corresponds to each of a plurality of chromaticities when the lighting fixture 4 emits light, and includes a plurality of color setting buttons that emit light with the corresponding chromaticity when touched by the user. Each of the color setting buttons is at least partially colored with a color imitating the corresponding chromaticity.

[0054] The GUI 120 includes a normal-specification display panel 123 and an effect-specification display panel 124. When touched by the user, the normal-specification display panel 123 performs a screen transition to display the normal-specification GUI 200 (see FIG. 8), and when touched by the user, the effect-specification display panel 124 performs a screen transition to display the effect-specification GUI 130 (see FIG. 5).

[0055] The normal-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.

[0056] The left end of the dimming rate display bar 123a represents 0%, and the right end represents 100%. The currently set dimming rate is represented by the position of the cursor 123b on the dimming rate display bar 123a. Also, the dimming rate display section 123d indicates the currently set dimming rate numerically. 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 numerically (for example, "4000K (Kelvin)").

[0057] The effect-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.

[0058] The dimming rate display bar 124a represents 0% at the left end and 100% at the right end, and the currently set dimming rate is represented by the position of the cursor 123b on the dimming rate display bar 124a. Further, the dimming rate display unit 124d indicates the currently set dimming rate numerically. The color temperature display unit 123c is a circular image, and its color represents the color temperature of the light emitted by the light source unit 40 according to the current setting.

[0059] <1.2.3. Production Specification GUI130> FIG. 5 is a diagram showing a GUI 130 of a production specification for performing dimming and color adjustment.

[0060] As shown in FIG. 5, the GUI 130 includes a color selection area 131, a switching unit 132, a dimming rate selection unit 135, a horizontal color selection unit 137, and a vertical color selection unit 139.

[0061] The color selection area 131 has a predetermined number (for example, 11×11) of circular color setting buttons 131a, 131b, 131c, 131d, ···, 131h··· (hereinafter collectively referred to as "color setting button 131X") arranged in a rectangular matrix within a rectangular frame.

[0062] The number of color setting buttons arranged in the color selection area 131 is desirably such that the number of options available for the user is not too few and not too many so that the user does not get confused about which one to choose. For this reason, the number of color setting buttons is desirably about 5×5 or more and 15×15 or less.

[0063] The color setting button 131X is associated with the chromaticity of the light emitted by the light source unit 40 of the lighting fixture 4. The user can cause the light source unit 40 of the lighting fixture 4 to emit light at the chromaticity pre-associated with the color setting button 131X by touching the color setting button 131X.

[0064] The color setting button 131X is associated with the chromaticity when the light source unit 40 emits light. More precisely, it is associated with the control signal output to the light source unit 40 for emitting light at that chromaticity. That is, each color setting button 131X is associated with a control signal corresponding to the current value supplied to each of the blue-white LED 42c, red LED 42b, and yellow-white LED 42a, and these correspondence tables are stored in the ROM 62.

[0065] In the smartphone 6, when the touch panel 65 detects that the user has touched the color setting button 131X, it notifies the control unit 61 of the touched color setting button 131X. The control unit 61 refers to the correspondence table of the chromaticity and the control signal corresponding to the button stored in the ROM 62, reads out the control signal corresponding to the touched color setting button 131X, and transmits it to the lighting fixture 4 to be controlled using the wireless communication unit 64. The lighting fixture 4 that has received the control signal causes the light source unit 40 to emit light at the chromaticity corresponding to the control signal.

[0066] <Arrangement of the color setting button 131X> Here, the arrangement of each color setting button 131X in the rectangular matrix will be described. In the rectangular matrix of the color selection area 131, the color setting button 131a is arranged at the lower right corner, the color setting button 131b is arranged at the upper right corner, the color setting button 131c is arranged at the upper left corner, and the color setting button 131d is arranged at the lower left corner.

[0067] The color setting button 131a corresponds to the chromaticity coordinates of the light color when only the red LED 42b is lit, and is associated with the control signal for lighting 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 lights up.

[0068] The color setting button 131b corresponds to the chromaticity coordinates of the light color when only the blue-white LED 42c is lit, and is associated with the control signal for lighting 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 lights up.

[0069] The color setting button 131c corresponds to the chromaticity coordinates of the light color when only the yellow-white LED 42a is lit, and is associated with a control signal for lighting 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 lights up.

[0070] 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 is associated with a control signal for lighting 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 light up at the same dimming rate.

[0071] As shown in FIG. 5, nine color setting buttons are arranged between adjacent ones of the 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 (conveniently referred to as the "third color setting button") between adjacent ones (conveniently referred to as the "first color setting button" and the "second color setting button") of the color setting buttons 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, dividing into 10 equal parts) the straight 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.

[0072] For example, as shown in FIG. 5, nine color setting buttons including the color setting button 131h are arranged between the color setting button 131a and the color setting button 131b. Each color setting button corresponds to each point obtained by dividing the straight line connecting the chromaticity coordinates (0.60, 0.38) of the red LED 42b corresponding to the color setting button 131a and the chromaticity coordinates (0.23, 0.26) of the blue-white LED 42c corresponding to the color setting button 131b into 10 equal parts in the chromaticity coordinates of FIG. 3. The 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 obtained by dividing the straight line connecting both chromaticity coordinates into 10 equal parts.

[0073] Here, in the chromaticity diagram, when the red LED 42b and the yellow-white LED 42a are each lit at the same dimming rate, the chromaticity near the chromaticity coordinates of the chromaticity is easily recognizable as a difference to the user. Therefore, by associating the chromaticity when the red LED 42b and the yellow-white LED 42a are each lit at the same dimming rate with the color setting button 131d, it is possible to finely provide options within the color selection area 131 for a plurality of chromaticities near the chromaticity coordinates where the user can easily recognize the difference. For this reason, the GUI 130 is a user interface that makes it easy for the user to select a desired chromaticity.

[0074] Note that the setting of the color setting button 131d does not necessarily have to be associated with the chromaticity when the red LED 42b and the yellow-white LED 42a are each lit at the same dimming rate. For example, when the light source unit 40 of the lighting fixture 4 includes LED packages of four different colors instead of three colors as described above, the chromaticity when any one of the four-color LED packages emits light, more precisely, the control signal output to the light source unit 40 to emit light at that chromaticity, may be associated, and each of the four-color LED packages may correspond to each of the color setting buttons at the four corners in the rectangular matrix of the color selection area 131.

[0075] Also, when the light source unit 40 includes a plurality of LED packages, each of the LED packages of each color may be associated with any one of the color setting buttons in the rectangular matrix of the color selection area 131.

[0076] 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 one of 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, is obtained by connecting the chromaticity coordinates on the chromaticity diagram of the chromaticity of the first color setting button and the chromaticity coordinates on the chromaticity diagram of the chromaticity of the second color setting button with a straight line, and dividing them equally by the number of color setting buttons located between the first color setting button and the second color setting button + 1. It corresponds to the Kth chromaticity coordinate counted from the chromaticity coordinate of the first color setting button among the chromaticity coordinates.

[0077] When the color setting button 131X is touched, the light color emitted by the light source unit 40 is filled with the color of an image that can be intuitively grasped by the user.

[0078] FIG. 6 shows the colors of the images of the color setting buttons 131X in the rectangular matrix of the color selection area 131, represented in RGB format. An RGB value is associated with each of the color setting buttons 131X. In FIG. 6, Gm (m is 0 to 10) represents which color setting button it is in the horizontal direction with respect to the color setting button 131c at the upper left corner of the matrix, and Pn (n is 0 to 10) represents which color setting button it is in the vertical direction with respect to the color setting button 131c at the upper left corner of the matrix. For example, the color setting button 131h corresponds to the intersection of the columns of G10 and P9, and is represented by R being 255, G being 57, and B being 40.

[0079] Note that the... in FIG. 6 indicates that there are actually numerical values in the columns of G2 to G8, the rows of P2 to P8, and part of the rows of P1 and P9, etc., but they are omitted in FIG. 6.

[0080] As shown in FIG. 5, the switching unit 132 includes a normal effect switching button 132a, a recommended button 132b, and an area for displaying the group name. In the case of the GUI 130, the group name is "Large Conference Room Group".

[0081] The cursor 131e is an image that surrounds the color setting button selected by the user's touch to clarify it.

[0082] The normal effect switching button 132a is a button for switching the display from the GUI 130 with the effect specification to the display of the GUI 200 with the normal specification. When touched by the user, the display switches to the GUI 200 with the normal specification.

[0083] When the recommended button 132b is touched by the user, a GUI 150 (see FIG. 7) that displays the recommended list pops up and is displayed. Note that the GUI 150 does not necessarily have to pop up and be displayed, and may be switched to and displayed instead of popping up.

[0084] The dimming rate selection unit 135 is a UI for 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 unit 135c, an increase button 135d, a decrease button 135e, a rapid increase button 135f, and a rapid decrease button 135g.

[0085] When the user specifies a dimming rate using the dimming rate selection unit 135, the smartphone 6 notifies the lighting fixture 4, which is the control target, of the specified dimming rate, and the lighting fixture 4 causes the light source unit 40 to emit light at the specified dimming rate.

[0086] As shown in FIG. 5, the dimming rate bar 135a is an image indicating a dimming rate from 0 to 100%, and indicates the dimming rate set by the position where the dimming rate display mark 135b is arranged on the dimming rate bar 135a. 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 the dimming rate display mark 135b and dragging it to change the position on the dimming rate bar 135a.

[0087] The dimming rate value display unit 135c numerically displays the value of the set dimming rate and also functions as a UI for changing the dimming rate.

[0088] Specifically, when the user touches the dimming rate value display unit 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 unit 135c.

[0089] 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 in conjunction. When the dimming rate is changed using the dimming rate value display unit 135c, in conjunction therewith, the position of the dimming rate display mark 135b on the dimming rate bar 135a changes to indicate the specified dimming rate.

[0090] The increase button 135d, the decrease button 135e, the rapid increase button 135f, and the rapid decrease button 135g each 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.

[0091] The color selection unit 137 is a UI for changing the color setting button specified in the color selection area 131 to the adjacent color setting button 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 fixture 4 emits light according to the chromaticity indicated by the changed color setting button, similar to when the color setting button 131X is touched by the user as described above.

[0092] The color selection unit 137 includes a horizontal position display unit 137a, a decrease button 137b, and an increase button 137c.

[0093] The horizontal position display unit 137a indicates the horizontal position of the selected color setting button in the color selection area 131.

[0094] The decrease button 137b and the increase button 137c are buttons for selecting the color setting button immediately to the left and immediately to the right of the currently selected color setting button, respectively.

[0095] Each time the user touches the decrease button 137b, the color setting button immediately to the left of the currently selected color setting button is selected, the position of the cursor 131e surrounding the selected color setting button decreases by 1 in the horizontal direction, and in conjunction therewith, the numerical value displayed by the horizontal position display unit 137a decreases by 1.

[0096] Also, every time the user touches the increase button 137c, the color setting button immediately to the right of the currently selected color setting button is selected, the position of the cursor 131e surrounding the selected color setting button increases by 1 in the horizontal direction, and in conjunction therewith, the numerical value displayed by the horizontal position display unit 137a increases by 1.

[0097] The color selection unit 139 is a UI part for changing the color setting button specified in the color selection area 131 to the upper or lower color setting button 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 fixture 4 emits light according to the chromaticity indicated by the changed color setting button, in the same manner as when the color setting button 131X is touched by the user as described above.

[0098] The color selection unit 139 includes a vertical position display unit 139a, a decrease button 139c, and an increase button 139b.

[0099] The vertical position display unit 139a indicates the vertical position of the cursor 131e of the selected color setting button in the color selection area 131.

[0100] The decrease button 139c and the increase button 139b are buttons for selecting the lower color setting button and the upper color setting button of the currently selected color setting button, respectively.

[0101] Every 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 surrounding the selected color setting button decreases by 1 in the vertical direction, and in conjunction therewith, the numerical value displayed by the vertical position display unit 139a decreases by 1.

[0102] Also, every 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 surrounding the selected color setting button increases by 1 in the vertical direction, and in conjunction with this, the numerical value displayed by the vertical position display section 139a increases by 1.

[0103] <1.2.4. Recommended List GUI 150> The recommended list GUI 150 is a GUI that presents several color tones recommended for the user to select and makes them selectable. By pre-filtering the options, the user can easily select a color tone without the burden of choosing one from a large number of options.

[0104] As shown in FIG. 7, the GUI 150 includes panels 151a to 151h (hereinafter collectively referred to as "panel 151"), a cancel button 153a, and a decision button 153b.

[0105] Panels 151a to 151h are each associated with the color tone and dimming rate when the light source unit 40 emits light, more precisely, the control signal output to the light source unit 40 to emit light at that color tone and dimming rate. Also, it is desirable that panels 151a to 151h correspond to the color tones associated with any of the color selection buttons in the color selection area 131.

[0106] When the user touches any of panels 151a to 151h, the associated control signal is transmitted to the lighting fixture 4 that is the control target. The lighting fixture 4 that has received the control signal causes the light source unit 40 to emit light at the color tone and dimming rate according to the control signal. At this time, the dimming rate and color tone specified by the user are not stored, but are in a temporarily changed state (preview state) to the specified dimming rate and color tone. When the decision button 153b is touched in the preview state, the specified dimming rate and color tone are stored. When the cancel button 153a is touched, it returns to the dimming rate and color tone before the preview state that was stored, the display of the GUI 150 disappears, and the display returns to the original GUI 130.

[0107] Also, when the user touches any of the panels 151a to 151h, the selected state by the user is set, and it is made clear which panel is selected, for example, by changing the color of the panel by dimming. When touching the selected panel again in the selected state, the selection is canceled. Each time the user touches a panel, the selection state and the cancellation state toggle.

[0108] Panel 151a includes a color display section 151aa, a horizontal coordinate section 151ab, a vertical coordinate section 151ac, a dimming rate section 151ad, and a color explanation section 151ae.

[0109] The color display section 151aa is a circularly painted image that represents the chromaticity when the light source section 40 emits light in a color that the user can intuitively understand when the panel 151a is touched.

[0110] 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.

[0111] 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.

[0112] The dimming rate section 151ad represents the dimming rate when the light source section 40 emits light when the panel 151a is touched.

[0113] The color explanation section 151ae is a section that describes the color displayed in the color display section 151aa by comparing it to objects, phenomena, etc. of similar colors so that people can easily recognize it.

[0114] Note that the panels 151b to 151h also have the same configuration as the panel 151a.

[0115] <1.2.5. Normal Specification GUI200> The normal specification means changing the chromaticity when the light source unit 40 emits light between the chromaticity corresponding to a low color temperature and the chromaticity corresponding to a high color temperature along the blackbody locus. The smartphone 6 holds in the ROM 62 a database associating each color temperature with the chromaticity, and can mutually convert the color temperature and the chromaticity.

[0116] FIG. 8 is a diagram showing a GUI 200 of the normal specification for performing dimming and color adjustment.

[0117] As shown in FIG. 8, the GUI 200 includes a color selection area 201, a switching unit 202, a dimming rate selection unit 205, a color temperature selection unit 207, a preview button 203a, and a determination button 203b.

[0118] The user can specify the color temperature when the light source unit 40 emits light using the color selection area 201 and the color temperature selection unit 207, and can specify the dimming rate when the light source unit 40 emits light using the color selection area 201 and the dimming rate selection unit 205.

[0119] Here, the light source unit 40 of the lighting fixture 4 does not immediately emit light according to the dimming rate and color temperature specified by the user. When the preview button 203a is touched, it emits light at the specified dimming rate and color temperature. At this time, the dimming rate and color temperature specified by the user are not stored, but are in a state temporarily changed to the specified dimming rate and color temperature (preview state). When the determination button 203b is touched in the preview state, the specified dimming rate and color temperature are stored, and a control signal for emitting light at the dimming rate 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 causes the light source unit 40 to emit light at the received dimming rate and color temperature. On the other hand, when the preview button 203a is touched in the preview state, it returns to the dimming rate and color temperature before the stored preview state.

[0120] The color selection area 201 is a rectangular color selection area, with the left side facing the paper corresponding to a low color temperature, the right side facing the paper corresponding to a high color temperature, and is colored with a color that schematically represents the color temperature.

[0121] As an example, the color selection area 201 is painted with a dark orange color on the left side facing the paper surface and a dark blue color on the right side facing the paper surface, and is colored so as to gradate from the dark orange color to a light orange color, a light blue color, and a dark blue color.

[0122] The cursor 201a indicates the dimming rate when the light source unit 40 emits light according to the vertical position of the color selection area 201, and indicates the color temperature when the light source unit 40 emits light according to 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.

[0123] The dimming rate selection unit 205 is a UI for 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 unit 205c, an increase button 205d, a decrease button 205e, a rapid increase button 205f, and a rapid decrease button 205g.

[0124] When the user specifies the dimming rate using the dimming rate selection unit 205, the smartphone 6 notifies the lighting fixture 4 whose control target is the specified dimming rate, and the lighting fixture 4 causes the light source unit 40 to emit light at the specified dimming rate.

[0125] As shown in FIG. 8, the dimming rate bar 205a is an image indicating 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 set dimming rate. In FIG. 8, as an example, a dimming rate of 80% is shown. 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 dragging while touching the dimming rate display mark 205b.

[0126] The dimming rate value display unit 205c is a UI that numerically displays the value of the currently specified dimming rate, and also functions as a UI for changing the dimming rate.

[0127] 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 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 205c.

[0128] Here, when the user changes the dimming ratio by moving the dimming ratio display mark 205b, the dimming ratio displayed by the dimming ratio value display unit 205c also changes in tandem, and when the dimming ratio is changed using the dimming ratio value display unit 205c, the position of the dimming ratio display mark 205b on the dimming ratio bar 205a changes in tandem to indicate the specified dimming ratio.

[0129] The increase button 205d, the decrease button 205e, the rapid increase button 205f, and the rapid decrease button 205g respectively 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%.

[0130] Color temperature selection unit 207 is a UI for increasing or decreasing the selected color temperature. When the color temperature specified by color temperature selection unit 207 is changed, light source unit 40 of lighting device 4 emits light with a chromaticity corresponding to the changed color temperature.

[0131] 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.

[0132] The color temperature bar 207a is a UI that indicates a color temperature range from 1800K to 12000K, and the color temperature indicated is the one corresponding to the position where the color temperature display mark 207b is arranged on the color temperature bar 207a. 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 dragging while touching the color temperature display mark 207b.

[0133] The color temperature value display section 207c numerically displays the value of the currently specified color temperature.

[0134] The increase button 207d, decrease button 207e, rapid increase button 207f, and rapid decrease button 207g respectively 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%.

[0135] Note that the position of the dimming rate display mark 205b on the dimming rate bar 205a indicating the dimming rate, the vertical position in the color selection area 201 of the cursor 201a, and the numerical value of the dimming rate value display section 205c are interlocked, and when any one of them is changed, the others also change to show the same dimming rate.

[0136] Also, the position of the color temperature display mark 207b on the color temperature bar 207a indicating the color temperature, the horizontal position in the color selection area 201 of the cursor 201a, and the numerical value of the color temperature display section 207c are interlocked, and when any one of them is changed, the others also change to show the same color temperature.

[0137] As shown in FIG. 8, the switching section 202 includes a normal effect switching button 202a, a recommended button 202b, and an area for displaying the group name. In the case of the GUI 200, the group name is "Large Conference Room Group".

[0138] The normal switching button 202a is a button for switching from the normal specification GUI to the rendering specification GUI. When touched by the user, the display switches to the rendering specification GUI 130.

[0139] When the recommended button 202b is touched by the user, the GUI 250 (see FIG. 9) that displays the recommended list is displayed.

[0140] When the detail button 202c is touched by the user, the GUI 280 (see FIG. 10) for fine-tuning the color tone is displayed.

[0141] <1.2.6. Recommended list GUI 250> The recommended list GUI 250 is a GUI that presents several color temperatures recommended for the user to select and makes them selectable. By pre-filtering the options, the user can easily select the color temperature without the burden of choosing one from a large number of options.

[0142] As shown in FIG. 9, the GUI 250 includes panels 251a to 251h (hereinafter collectively referred to as "panel 251"), a cancel button 253a, and a decision button 253b.

[0143] Panels 251a to 251h are each associated with the color temperature and dimming rate when the light source unit 40 emits light, more precisely, the control signal output to the light source unit 40 to emit light at that color temperature and dimming rate.

[0144] When the user touches any of the panels 251a to 251h, the associated control signal is transmitted to the lighting fixture 4 that is the control target. The lighting fixture 4 that has received the control signal causes the light source unit 40 to emit light at a color temperature and dimming rate corresponding to the control signal. At this time, the dimming rate and color temperature specified by the user are not stored, and the state is temporarily changed to the specified dimming rate and color temperature (preview state). When the determination 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 before the preview state that was stored are restored, the display of the GUI 250 disappears, and the display returns to the original GUI 200 display.

[0145] Also, when the user touches any of the panels 251a to 251h, the state selected by the user is set, and it is made clear which panel was selected, such as by the color of the panel changing due to dimming.

[0146] When touching the selected panel again in the selected state, the selection is cancelled. Each time the user touches the panel, the selection state and the cancellation state toggle between each other.

[0147] Panel 251a includes a color display section 251aa, a dimming rate section 251ab, and a color explanation section 251ac.

[0148] The color display section 251aa is an image in which the color temperature at which the light source unit 40 emits light when the panel 251a is touched is numerically described within a rectangular area and the color temperature is painted in the color of an image that allows the user to intuitively grasp it.

[0149] The dimming rate section 251ab represents the dimming rate when the light source unit 40 emits light when the panel 251a is touched.

[0150] The color explanation section 251ac is a section that describes the color displayed in the color display section 251aa by comparing it to objects, phenomena, etc. of similar colors that are easily recognizable by people.

[0151] Note that the panels 251b to 251h also have the same configuration as the panel 251a.

[0152] <1.2.7. Hue Fine - Tuning GUI 280> The hue fine - tuning GUI 280 is a GUI for finely adjusting the hue of the currently specified color. For the color indicated by the cursor 201a of the normal - specification GUI 200, the Duv (color deviation) can be changed. Here, Duv represents how far away from the black - body radiation locus it is. When the color deviation shifts upward (plus), the light color looks green - tinged, and when it shifts downward (minus), it looks red - purple - tinged.

[0153] The GUI 280 includes hue buttons 281a to 281e, a cancel button 283b, and a determination button 283a.

[0154] The hue buttons 281a to 281h are respectively associated with a control signal that increases Duv by 6, a control signal that increases Duv by 3, a control signal that does not change Duv, a control signal that decreases Duv by 3, and a control signal that decreases Duv by 6.

[0155] 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 determination button 283a is touched, the Duv is stored, and when the cancel button 283b is touched, it returns to the light emission with the originally stored Duv.

[0156] When the user touches an area outside the area where the hue fine - tuning GUI 280 is displayed on the touch panel 65, the display of the GUI 280 disappears and returns to the display of the original GUI 200.

[0157] Note that the hue fine - tuning GUI 280 was supposed to be called from the normal - specification GUI 200, but it is not limited to this, and it may be called from other GUIs for selecting chromaticity, such as the production - specification GUI 130.

[0158] <3. Modification Example> As described above, the embodiments of the lighting fixture according to the present invention have been described. However, the description of the above embodiments should be considered as illustrative in all respects and not restrictive. The scope of the present invention is indicated not by the above embodiments but by the claims. Furthermore, it is intended that the scope of the present invention includes all modifications within the meaning and scope equivalent to the claims. It is also possible to modify the illustrated lighting fixture as follows, and it goes without saying that the present invention is not limited to the lighting fixture as shown in the above embodiments.

[0159] (1) In the above embodiment, the switching between the display of the GUI130 of the effect specification and the display of the GUI200 of the normal specification was performed using the effect / normal switching button 132a provided in the GUI130 and the effect / normal switching button 202a provided in the GUI200. However, it is not limited to this, and other methods may be used. For example, as shown in FIG. 11, a selection GUI300 for selecting the display of the GUI130 and the GUI200 may be used.

[0160] The GUI300 includes a normal specification selection button 301a, an effect specification selection button 301b, a cancel button 303a, a normal specification GUI reduced image 305a, and an effect specification GUI reduced image 305b.

[0161] When the normal specification selection button 301a is touched by the user, the GUI200 is displayed. When the effect specification selection button 301b is touched by the user, the GUI130 is displayed. The cancel button 303a is a button for canceling the display of the GUI300.

[0162] The normal specification GUI reduced image 305a is a reduced image of the normal specification GUI130 and is an image for allowing the user to recognize what GUI will be displayed when the normal specification selection button 301a is touched.

[0163] The production specification GUI reduced image 305b is a reduced image of the production specification GUI 200, and is an image for allowing the user to recognize what GUI will be displayed when the production specification selection button 301b is touched.

[0164] (2) In the above-described embodiment, in the lighting system 1, a plurality of lighting fixtures are directly controlled by the smartphone 6. However, the present invention is not limited to this, and indirect control may be employed. For example, as shown in FIG. 12, the configuration of the lighting system 1 may be a lighting system 501 including a gateway 508 which is a control device that is constantly powered on.

[0165] By doing so, even when the smartphone 6 is taken out and is not within the communication range of the lighting fixture 4, that is, in a case where the smartphone 6 cannot directly transmit a control signal to the lighting fixture 4, the gateway 508 stores the dimming and color adjustment change schedules, and transmits control signals for dimming and color adjustment to each lighting fixture 4 according to the schedules, so that the dimming and color adjustment of the lighting fixture 4 can be performed. When creating a change schedule to be stored in the gateway 508, the user can set the chromaticity, color temperature, and dimming rate of the light emission for each time zone of the lighting fixture 4 using the GUI described above.

[0166] (3) In the above-described embodiment, the lighting fixture 4 may be attached to the ceiling, or may be attached to a wall surface, under a shelf, or the like. Further, a configuration in which a plurality of lighting fixtures 4 are connected may be employed.

[0167] (4) In the above-described embodiment, an LED is used as the light source. However, the present invention is not limited to this, and other light sources may be employed. For example, an organic EL or an organic LED (Organic Electroluminescence or Organic Light Emitting Diode), a field emission display, or the like may be used.

[0168] (5) The above-described embodiment and each modification may be partially combined.

[0169] <4. Extraction of the Invention> Hereinafter, as another embodiment of the present invention, the configuration of the lighting fixture, its modification examples, and effects will be described.

[0170] (1) The lighting control device according to an embodiment of the present invention is a lighting control device that displays a graphical user interface for controlling a lighting fixture including a plurality of color LED packages on a touch panel, and as the graphical user interface, a normal specification graphical user interface for changing the chromaticity of the light emission of the lighting fixture along the blackbody radiation locus, and in addition to the chromaticity along the blackbody radiation locus, an effect specification graphical user interface that enables selection of chromaticity not along the locus can be switched and displayed. The effect specification graphical user interface corresponds to each of a predetermined number of chromaticities when the lighting fixture emits light, and includes a plurality of color setting buttons that cause the lighting fixture to emit light with the corresponding chromaticity when touched by the user. Each of the color setting buttons is at least partially colored with a color imitating the corresponding chromaticity.

[0171] With the above configuration, the lighting control device according to the present invention has a limited number of selectable chromaticities in the effect specification graphical user interface, and each chromaticity can be recognized by an image of a color imitating the chromaticity. Therefore, the user can easily select a desired chromaticity.

[0172] (2) Further, the three-color LED packages are a red LED package, a yellow-white LED package, and a blue-white LED package. In the effect specification graphical user interface, the plurality of color setting buttons are arranged in a rectangular shape, and color setting buttons for causing only the red LED package to emit light, color setting buttons for causing only the yellow-white LED package to emit light, and color setting buttons for causing only the blue-white LED package to emit light are arranged at three corners of the rectangle.

[0173] According to this configuration, instead of selecting the chromaticity inside the triangle formed by connecting the color coordinates of the three-color LED packages in the chromaticity diagram, the user only needs to select one color setting button from the color setting buttons arranged in a rectangle. Therefore, it is easy for the user to understand and they can easily select the desired chromaticity.

[0174] (3) Also, color setting buttons for causing only the red LED package and the yellow-white LED package to emit light at the same dimming rate may be arranged at corners other than the three corners of the rectangle.

[0175] According to this configuration, since the chromaticity when the red LED package and the yellow-white LED package emit light at the same dimming rate, which is easy for the user to recognize the difference in chromaticity, is included in the options, it becomes easier for the user to select the desired chromaticity.

[0176] (4) Also, in the normal-specification graphical user interface and the effect-specification graphical user interface, a graphical user interface showing a plurality of options for values to be changed for changing the value of the color deviation related to the light emission of the lighting fixture may be displayed.

[0177] According to this configuration, the chromaticity once selected by the user can be easily made closer to the desired one.

[0178] (5) The lighting system according to an 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 equipped with a three-color LED package on a touch panel. As the graphical user interface, a normal-specification graphical user interface for changing the chromaticity of the light emission of the lighting fixture along the blackbody radiation locus and an effect-specification graphical user interface that enables selection of chromaticities not along the blackbody radiation locus in addition to the chromaticity along the blackbody radiation locus can be switched and displayed. The effect-specification graphical user interface corresponds to a predetermined number of chromaticities when the lighting fixture emits light, and includes a plurality of color setting buttons that cause the lighting fixture to emit light with the corresponding chromaticity when touched by the user. Each of the color setting buttons is at least partially colored with a color imitating the corresponding chromaticity.

[0179] According to this configuration, in the effect-specification graphical user interface, the selectable chromaticities are limited to a predetermined number, and each chromaticity can be recognized by an image of a color imitating the chromaticity. Therefore, the user can easily select a desired chromaticity.

Explanation of Reference Numerals

[0180] 1, 501 Lighting system 4, 4a, 4b, 4c, 4d Lighting fixture 6 Smartphone 40 Light source unit 41 Light source substrate 42 LED package 42a Yellow-white LED 42b Red LED 42c Blue-white LED 43 Circuit unit 44 WM unit 44a Wireless communication unit 44b Control unit 61 Control unit 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 part 137, 139 Color selection part 151a - 151h, 251a - 251h Panel 153b, 203b Decision button 202 Switching part 205 Dimming rate selection part 207 Color temperature selection part 508 Gateway

Claims

1. A lighting control device that displays a graphical user interface for controlling a lighting fixture having a plurality of color LED packages on a touch panel, The plurality of color LED packages are a red LED package, a yellow-white LED package, and a blue-white LED package, When the graphical user interface is touched by a user, color setting buttons for causing the lighting fixture to emit light at corresponding chromaticities are arranged in a rectangular matrix in which the vertical number and the horizontal number are each 5 or more, At three corners of the rectangle, there are arranged 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, At a corner diagonally located from the color setting button for causing only the blue-white LED package to emit light, there is arranged a color setting button for causing only the red LED package and the yellow-white LED package to emit light Lighting control device.

2. Among three adjacent color setting buttons, the middle color setting button corresponds to a chromaticity coordinate on a straight line connecting the chromaticity coordinates corresponding to each of the two adjacent color setting buttons The lighting control device according to claim 1.

3. In the graphical user interface, a graphical user interface showing a plurality of options for values to be changed for changing the value of the color deviation related to the light emission of the lighting fixture is displayed The lighting control device according to claim 1.

4. The color setting buttons arranged in the rectangle have a vertical number and a horizontal number of 15 or less each The lighting control device according to claim 1.

5. A lighting system including a lighting fixture and a lighting control device, The lighting control device displays a graphical user interface for controlling the lighting fixture including a plurality of color LED packages on a touch panel, The plurality of color LED packages are a red LED package, a yellow-white LED package, and a blue-white LED package, When the graphical user interface is touched by a user, color setting buttons for causing the lighting fixture to emit light at corresponding chromaticities are arranged in a rectangular matrix in which the vertical number and the horizontal number are each 5 or more, At three corners of the rectangle, there are arranged color setting buttons for causing only the red LED package to emit light, color setting buttons for causing only the yellow-white LED package to emit light, and color setting buttons for causing only the blue-white LED package to emit light, At a corner diagonally located from the color setting button for causing only the blue-white LED package to emit light, there is arranged a color setting button for causing only the red LED package and the yellow-white LED package to emit light Lighting system.

Images