Illumination control method, program, illumination control system, and illumination system

Abstract

To provide an illumination control method capable of easily reproducing a path drawn by a user with illumination.SOLUTION: The illumination control method is an illumination control method executed by one or more processors. The method includes an acquisition step and a control step. In the acquisition step, trajectory data representing trajectory B1 is acquired. In the control step, a light emission pattern C1 representing a trajectory B1 is emitted from a light source 12 by controlling the light sources 12 in which multiple light-emitting elements that are arranged in an array capable of being individually controlled based on the acquired trajectory data.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a lighting control method, a program, a lighting control system, and a lighting system.

Background Art

[0002] Patent Document 1 discloses an input processing device. This input processing device includes an input member and a control processing unit. The input member has an input pad and a detection unit that detects that a finger has touched the input pad. The control processing unit inputs a character or a symbol based on an input signal obtained from the detection unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the input processing device disclosed in Patent Document 1, although the trajectory drawn by the user on the input pad can be displayed on the display, there is a problem that the trajectory cannot be reproduced by lighting.

[0005] In view of the above problems, the present invention provides a lighting control method and the like that can easily reproduce the trajectory drawn by the user by lighting.

Means for Solving the Problems

[0006] A lighting control method according to an aspect of the present invention is a lighting control method executed by one or more processors, and includes an acquisition step and a control step. In the acquisition step, trajectory data indicating a trajectory is acquired. In the control step, based on the acquired trajectory data, a light source in which a plurality of individually controllable light-emitting elements are arranged in an array is controlled, so that a light-emitting pattern indicating the trajectory is irradiated from the light source.

[0007] A program according to one aspect of the present invention causes one or more processors to execute the illumination control method.

[0008] An illumination control system according to one aspect of the present invention includes an acquisition unit and a control unit. The acquisition unit acquires trajectory data indicating a trajectory. The control unit controls a light source in which a plurality of individually controllable light-emitting elements are arranged in an array based on the trajectory data acquired by the acquisition unit, so as to irradiate a light emission pattern indicating the trajectory from the light source.

[0009] An illumination system according to one aspect of the present invention includes the illumination control system, the light source, and a housing that houses the illumination control system and the light source.

Advantages of the Invention

[0010] The illumination control method and the like of the present invention have an advantage that it is easy to reproduce a trajectory drawn by a user by illumination.

Brief Description of the Drawings

[0011]

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[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangements and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Thus, among the components in the following embodiments, components not described in the independent claims will be described as optional components.

[0013] Also, each figure is a schematic diagram and is not necessarily drawn precisely. Therefore, for example, the scales etc. in each figure do not necessarily match. Also, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping descriptions are omitted or simplified.

[0014] Also, in this specification, terms indicating the relationship between elements, terms indicating the shape of elements, and numerical ranges are not expressions representing only strict meanings, but are expressions meaning substantially equivalent ranges, for example, including differences of about several percent.

[0015] (Embodiment) [Lighting System] First, the configuration of the lighting system according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic perspective view of a lighting system 100 according to the embodiment. FIG. 2 is a schematic cross-sectional view of a first housing 111 (described later) of the lighting system 100 according to the embodiment. FIG. 3 is a block diagram showing the overall configuration including the lighting system 100 according to the embodiment.

[0016] As shown in FIGS. 1 to 3, the lighting system 100 is a lighting device 10 that houses a light source 12, a driving unit 13, a heat sink 14, a lens barrel 15, and a lighting control system 2 in a housing 11. In the embodiment, the housing 11 has a cylindrical first housing 111 that houses the light source 12 and the driving unit 13, and a rectangular parallelepiped second housing 112 that houses the lighting control system 2. Note that the housing 11 may be composed of a single housing.

[0017] The lighting device 10 is, for example, a spotlight and is attached to a wiring fixture (for example, a wiring duct or a hanging ceiling, etc.) provided on a ceiling or a wall. Note that the lighting device 10 is not limited to a spotlight and may be, for example, a downlight or a ceiling light.

[0018] The light source 12 is, for example, a light source that emits white light. The light source 12 has a plurality of light emitting elements 121 (see FIG. 3) arranged in a two-dimensional matrix. The plurality of light emitting elements 121 are regularly arranged in a matrix of M rows and N columns. Here, M and N are natural numbers of at least 2 in at least one of them. M may be equal to N, or M may not be equal to N. The arrangement intervals in the row direction and the column direction of the light emitting elements 121 may be the same or different. In the embodiment, the outer shape of the range in which the plurality of light emitting elements 121 are arranged is rectangular, but may be other shapes such as circular.

[0019] Each light emitting element 121 includes, for example, a blue light emitting element and a yellow phosphor. In each light emitting element 121, the yellow phosphor is disposed on the light emitting side (front) of the blue light emitting element. The blue light emitting element is, for example, an LED (Light Emitting Diode). More specifically, the blue light emitting element is, for example, a fine LED having a size of 100 μm × 100 μm or less. The yellow phosphor is a phosphor that is excited by blue light and emits yellow light. Each light emitting element 121 emits white light as a mixed light of blue light and yellow light. The yellow phosphor is, for example, a YAG (yttrium aluminum garnet) - based phosphor, but is not limited thereto.

[0020] Note that the yellow phosphor may be provided to cover a plurality of blue light-emitting elements. For example, for a plurality of blue light-emitting elements arranged in a two-dimensional matrix, a yellow phosphor that entirely covers the plurality of blue light-emitting elements may be arranged.

[0021] The driving unit 13 drives the light source 12. Specifically, the driving unit 13 drives each of the plurality of light-emitting elements 121 independently of each other (that is, individually) according to the control information received from the control unit 222 of the lighting control system 2 described later. As a result, the lighting, extinguishing, light-emitting intensity, light-emitting time, etc. of each of the plurality of light-emitting elements 121 are individually controlled. For example, by individually controlling the lighting and extinguishing of the plurality of light-emitting elements 121, illumination light with light and dark can be emitted for each region. Then, when the illumination light is irradiated on a wall surface, for example, a light-emitting pattern C1 (see FIG. 5) corresponding to the light and dark can be imaged on the wall surface.

[0022] As described above, in the embodiment, since the driving unit 13 drives each of the plurality of light-emitting elements 121 independently of each other, it is not necessary to provide a liquid crystal device or a DMD (Digital Mirror Device) in the housing 11 like a general projector, and it is easy to realize miniaturization of the lighting device 10.

[0023] The driving unit 13 is realized by, for example, an ASIC (Application Specific Integrated Circuit). The driving unit 13 supplies a PWM (Pulse Width Modulation) modulated current to each of the plurality of light-emitting elements 121. Then, the driving unit 13 can change the light-emitting intensity of each light-emitting element 121 and realize a dimming function by adjusting the pulse width of the current supplied to each light-emitting element 121. Note that the dimming method is not limited to the PMW modulation method, and may be another modulation method such as an amplitude modulation or phase modulation method.

[0024] In the embodiment, the drive unit 13 is mounted together with the light source 12 on one substrate (not shown). The substrate is, for example, a rigid substrate, but may also be a flexible substrate. The substrate is provided with, for example, pattern wirings for supplying current from the drive unit 13 to each of a plurality of light emitting elements 121. Note that the substrate on which the drive unit 13 is mounted and the substrate on which the light source 12 is mounted may be separate from each other.

[0025] The heat sink 14 is made of, for example, metal and is integrally provided on the metal housing 11 (here, the first housing 111). On one surface of the heat sink 14, the substrate on which the light source 12 and the drive unit 13 are mounted is directly or indirectly fixed via an insulating member or the like. Thereby, the heat sink 14 and the substrate are thermally connected, and the heat generated by the light source 12 and the drive unit 13 is dissipated through the heat sink 14. For fixing the heat sink 14 to the substrate, fixing members such as an adhesive or a screw are used.

[0026] The lens barrel 15 is an optical member including one or more lenses 151. In the embodiment, the lens barrel 15 adds a predetermined optical effect to the light emitted from the light source 12 so that the light emission pattern C1 based on the illumination light forms an image on the wall surface located in the front and emits the light forward.

[0027] In the embodiment, the lens barrel 15 has a lens barrel main body and one or more lenses 151 (here, two lenses 151) fixed to the lens barrel main body. Note that the number, shape, outer diameter, etc. of the lenses 151 included in the lens barrel 15 are appropriately determined, for example, according to the functions required for the lens barrel 15. In the embodiment, the lens barrel 15 is movable in the front-rear direction with respect to the light source 12 (the position in the front-rear direction can be adjusted). Thereby, according to the distance between the illumination device 10 and the wall surface irradiated with the illumination light, the position of the lens barrel 15 can be adjusted so that the light emission pattern C1 based on the illumination light forms an image on the wall surface. That is, in the embodiment, the illumination device 10 can adjust the focus of the light emission pattern C1 based on the illumination light.

[0028] [Illumination control system] Next, the lighting control system 2 according to the embodiment will be described with reference to FIG. 3. As shown in FIG. 3, the lighting control system 2 includes a communication unit 21, a processing unit 22, a storage unit 23, and a power supply unit 24. Note that the lighting control system 2 only needs to include the processing unit 22 (an acquisition unit 221 and a control unit 222, which will be described later), and does not necessarily need to include the communication unit 21, the storage unit 23, and the power supply unit 24.

[0029] The communication unit 21 communicates with a control terminal 3, which will be described later. In the embodiment, the communication unit 21 communicates with the control terminal 3 wirelessly. Specifically, the communication unit 21 communicates with the control terminal 3 via a wireless LAN (Local Area Network) using Wi-Fi (registered trademark). The communication unit 21 is realized by, for example, an antenna and a wireless processing circuit that processes a signal received by the antenna.

[0030] The processing unit 22 is realized by, for example, an LSI (Large Scale Integration) which is an integrated circuit (IC: Integrated Circuit). Note that the integrated circuit is not limited to the LSI, and may be a dedicated circuit or a general-purpose processor. In the embodiment, the processing unit 22 is a microcontroller. The microcontroller includes, for example, a non-volatile memory in which a program is stored, a volatile memory which is a temporary storage area for executing the program, an input / output port, and a processor for executing the program. Further, the processing unit 22 may be a programmable FPGA (Field Programmable Gate Array), or a reconfigurable processor in which the connection and setting of circuit cells in the LSI can be reconfigured. The functions executed by the processing unit 22 may be realized by software or hardware.

[0031] In the embodiment, the processing unit 22 has a function as an acquisition unit 221 and a function as a control unit 222. That is, the lighting control system 2 according to the embodiment includes the acquisition unit 221 and the control unit 222.

[0032] The acquisition unit 221 acquires trajectory data indicating a trajectory B1 (see FIGS. 4 and 5). Here, the trajectory B1 is a figure drawn by the user, for example, when user A1 (see FIG. 5) moves a part of his own body (for example, a finger). In other words, the trajectory data is data indicating a figure drawn by hand by user A1. In the embodiment, the acquisition unit 221 acquires the trajectory data by detecting the trajectory B1 drawn by user A1 at the control terminal 3 having the detection unit 32 that detects the movement of the finger of user A1. More specifically, when the control terminal 3 detects the trajectory B1, the trajectory data indicating the trajectory B1 is transmitted from the control terminal 3 to the communication unit 21 of the lighting control system 2. Then, the acquisition unit 221 acquires the trajectory data received by the communication unit 21.

[0033] Based on the trajectory data acquired by the acquisition unit 221, the control unit 222 controls the light source 12 in which a plurality of individually controllable light emitting elements 121 are arranged in an array, so as to irradiate a light emission pattern C1 indicating the trajectory B1 from the light source 12. Hereinafter, the control by the control unit 222 will be specifically described with reference to FIG. 4. FIG. 4 is an explanatory diagram of the control by the control unit 222 of the lighting control system 2 according to the embodiment. In FIG. 4, the grid represents a plurality of light emitting elements 121 arranged in a two-dimensional array. Also, the grid shown in FIG. 4 generally matches the size of the image including the trajectory B1 indicated by the trajectory data. In other words, the control unit 222 normalizes the image so that the two-dimensional array in which the plurality of light emitting elements 121 are arranged generally matches the size of the image including the trajectory B1 indicated by the trajectory data. Thereby, each of the plurality of pixels included in the image and the plurality of light emitting elements 121 in the two-dimensional array correspond one-to-one. For example, the pixel at the upper left corner of the image corresponds to the light emitting element 121 at the upper left corner in the two-dimensional array.

[0034] The control unit 222 determines the light emission pattern C1 based on the trajectory data. Specifically, the control unit 222 identifies two or more light emitting elements 121 respectively corresponding to two or more pixels constituting the trajectory B1 in the above image. Further, the control unit 222 determines the luminance of each of the two or more light emitting elements 121 based on the pixel values of the two or more pixels. Then, the control unit 222 generates control information based on the identified two or more light emitting elements 121 and the luminance of each of the two or more light emitting elements 121.

[0035] The control information includes information regarding the lighting, extinguishing, and light emission intensity of each of the plurality of light emitting elements 121. For example, the light emission intensity can be represented by an 8-bit numerical value in the range from 0% (extinguished) to 100% (lit at the highest light emission intensity). The control unit 222 generates array data including data representing the light emission intensity of each light emitting element 121 in 8 bits for each row of the plurality of light emitting elements 121 as the control information. Here, the control unit 222 generates array data in which the light emission intensity of the two or more light emitting elements 121 becomes a value greater than 0% and the light emission intensity of the remaining light emitting elements 121 becomes 0% as the control information.

[0036] Then, the control unit 222 outputs the generated control information to the driving unit 13. The driving unit 13 individually drives the plurality of light emitting elements 121 according to the received control information. Here, the driving unit 13 lights only the two or more light emitting elements 121 and extinguishes the remaining light emitting elements 121. Thereby, the light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12, and the illumination light irradiated from the light source 12 is irradiated onto, for example, a wall surface, so that the light emission pattern C1 can be imaged on the wall surface.

[0037] The storage unit 23 is a storage device that stores computer programs and the like executed by the processing unit 22. The storage unit 23 is realized by, for example, a semiconductor memory.

[0038] The power supply unit 24 supplies power for operation to the lighting control system 2 and the drive unit 13. The power supply unit 24 has, for example, an AC-DC converter circuit, converts the AC power supplied from the commercial power supply 4 into DC power, and supplies the converted DC power to each part of the lighting control system 2 and the drive unit 13.

[0039] [Control terminal] Next, the control terminal 3 according to the embodiment will be described. The control terminal 3 is a portable terminal such as a smartphone or a tablet terminal, for example. In the embodiment, the control terminal 3 is a tablet terminal. Note that the control terminal 3 may be a device fixed to a wall or the like, or a device such as a desktop or laptop personal computer.

[0040] As shown in FIG. 3, the control terminal 3 includes a display unit 31, a detection unit 32, a processing unit 33, and a transmission unit 34.

[0041] The display unit 31 displays the locus B1 drawn by the user A1. The display unit 31 is realized by, for example, a liquid crystal display panel or an organic EL (Electroluminescence) display panel. In the embodiment, the display unit 31 is realized by a touch panel display having a touch sensor as the detection unit 32.

[0042] The detection unit 32 detects the movement of the user A1. In the embodiment, the detection unit 32 is the touch sensor as described above, and detects the movement of the finger of the user A1 who touches the display unit 31. Note that the detection unit 32 may detect the movement of the user A1 by detecting an input using a pointing device such as a pen or a mouse by the user A1. Further, the detection unit 32 may detect the movement of the user A1 in space by, for example, a gyro sensor or the like. In this case, the control terminal 3 may not have the display unit 31 for drawing the locus B1.

[0043] The processing unit 33 is realized by, for example, an LSI which is an integrated circuit. Note that the integrated circuit is not limited to the LSI, and may be a dedicated circuit or a general-purpose processor. In the embodiment, the processing unit 33 is a microcontroller. The microcontroller includes, for example, a non-volatile memory in which a program is stored, a volatile memory which is a temporary storage area for executing the program, an input / output port, a processor for executing the program, and the like. Further, the processing unit 33 may be a programmable FPGA or a reconfigurable processor in which the connection and setting of circuit cells in the LSI can be reconfigured. The functions executed by the processing unit 33 may be realized by software or by hardware.

[0044] In the embodiment, the processing unit 33 executes a process (transmission step) of converting the point group data indicating the locus B1 drawn by the user A1 detected by the detection unit 32 into an image, and causing the transmission unit 34 to transmit the converted image as locus data to the communication unit 21 of the lighting control system 2. Further, the processing unit 33 executes a process (drawing step) of causing the display unit 31 to draw the locus B1 drawn by the user A1 detected by the detection unit 32.

[0045] The transmission unit 34 communicates with the lighting system 100 (lighting device 10). In the embodiment, the transmission unit 34 communicates with the lighting device 10 wirelessly. Specifically, the transmission unit 34 communicates with the lighting device 10 by BLE (Bluetooth (registered trademark) Low Energy). The transmission unit 34 is realized by, for example, an antenna and a wireless processing circuit that processes a signal received by the antenna.

[0046] FIG. 5 is a diagram showing a usage example of the control terminal 3 according to the embodiment. In FIG. 5, the area surrounded by the broken line represents the irradiable range of the light source 12. As shown in FIG. 5, when the user A1 draws an arbitrary-shaped locus B1 on the display unit 31 with the control terminal 3, a light emission pattern C1 indicating the locus B1 is irradiated from the light source 12 in real time following the input of the locus B1 by the user A1. Thereby, it is as if the user A1 directly draws the locus B1 on the wall surface, and the light emission pattern C1 based on the illumination light is imaged on the wall surface.

[0047] In the example shown in FIG. 5, the light-emitting pattern C1 showing the entire trajectory B1 drawn by the user A1 is imaged on the wall surface. Actually, even while the user A1 is drawing the trajectory B1, the light-emitting pattern C1 showing the trajectory B1 up to the drawn portion is imaged on the wall surface.

[0048] Here, in the embodiment, the processing unit 33 reduces the delay time from when the control terminal 3 receives the input of the trajectory B1 by the user A1 until the light source 12 irradiates the illumination light by executing the following first process and second process. That is, in the embodiment, the processing unit 33 executes a process of irradiating the light-emitting pattern C1 showing the trajectory B1 drawn by the user A1 from the light source 12 to the wall surface or the like with as little delay as possible.

[0049] In the first process, in the transmission step, the processing unit 33 compresses the image showing the trajectory B1 and transmits the compressed image as trajectory data to the illumination system 100 (illumination device 10). Then, the processing unit 33 time-divisionally controls the process of detecting the trajectory B1 drawn by the user A1 (detection step) and the above transmission step according to the time required for each process. For example, the processing unit 33 executes the detection step at a speed of 60 times per second, while executing the transmission step at a speed of 10 times per second. As a result, compared with the case where the execution speed of the detection step is adjusted to the execution speed of the transmission step, an event such as the input of the trajectory B1 by the user A1 not being received during the standby time from when the processing unit 33 executes the transmission step until the next transmission step is executed, for example, the trajectory B1 not being displayed on the display unit 31 and being locked does not occur. Therefore, by the processing unit 33 executing the first process, it becomes easier for the user A1 to smoothly input the trajectory B1, and it becomes less likely for the user A1 to feel stress.

[0050] Here, in the first process, the detection step and the transmission step are executed so that the interval for transmitting the trajectory data to the lighting system 100 (lighting device 10) is constant. For example, when the time required for the process becomes excessive and the interval is likely to be disrupted in either the detection step or the transmission step, the processing unit 33 abandons the process and executes the next process. Note that the scheduling for executing the detection step and the transmission step can be implemented using an API (Application Programming Interface) such as requestAnimationFrame in the Web browser provided in the control terminal 3, for example.

[0051] Also, in the first process, the processing unit 33 selects an optimal compression format from among RLE (Run Length Encoding), PNG (Portable Network Graphics), GIF (Graphics Interchange Format), JPEG (Joint Photographic Experts Group), or SVG (Scalable Vector Graphics), etc. as the compression format used when compressing the image. Here, the optimal compression format is a compression format that minimizes the sum of the time required to transmit the trajectory data and the time required to decode the trajectory data in the lighting control system 2. By selecting the optimal compression format in this way, the data volume of the trajectory data to be transmitted can be reduced, making it easier to reduce the delay time.

[0052] In the second process, in the transmission step, the processing unit 33 obtains the trajectory data by converting the data obtained by thinning out some points from the point cloud data indicating the trajectory B1 into an image, or by converting only the trajectory B1 drawn on the display unit 31 into an image. In the former process, for example, a process of thinning out points that are less likely to visually affect the user A1 is executed from the perspective of the image resolution. By performing the above preprocessing before converting the data into an image in this way, the data volume of the trajectory data to be transmitted can be reduced, making it easier to reduce the delay time.

[0053] In the embodiment, the processing unit 33 executes all of the above-described processing. However, even if the processing unit 33 only executes at least one of the first processing and the second processing, an effect of reducing the delay time can be expected.

[0054] [Operation] Hereinafter, the operation of the lighting control system 2 according to the embodiment will be described. First, a basic operation example of the lighting control system 2 according to the embodiment will be described with reference to FIG. 6. FIG. 6 is a flowchart showing a basic operation example of the lighting control system 2 according to the embodiment.

[0055] First, the acquisition unit 221 of the lighting control system 2 acquires trajectory data indicating the trajectory B1 (S1). In the embodiment, as already described, when the control terminal 3 detects the trajectory B1 drawn by the user A1, the trajectory data indicating the trajectory B1 is transmitted from the control terminal 3 to the communication unit 21 of the lighting control system 2. Then, the acquisition unit 221 acquires the trajectory data received by the communication unit 21.

[0056] Next, the control unit 222 of the lighting control system 2 controls the light source 12 based on the trajectory data acquired by the acquisition unit 221, so that the light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12 (S2). In the embodiment, as already described, the control unit 222 determines the light emission pattern C1 based on the trajectory data acquired by the acquisition unit 221, generates control information, and outputs the generated control information to the drive unit 13. The drive unit 13 individually drives a plurality of light emitting elements 121 included in the light source 12 according to the received control information. As a result, the light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12, and the illumination light irradiated from the light source 12 is irradiated onto, for example, a wall surface, so that the light emission pattern C1 forms an image on the wall surface.

[0057] Hereinafter, while the user is drawing the trajectory B1 on the control terminal 3, the above steps S1 and S2 are repeatedly executed.

[0058] Next, operation examples other than the basic operation example of the lighting control system 2 according to the embodiment will be described. The first to third operation examples described below can all be executed after the basic operation example is executed, that is, when the light emission pattern C1 indicating the locus B1 is irradiated on a wall surface or the like.

[0059] FIG. 7 is a diagram showing a first operation example of the lighting control system 2 according to the embodiment. In the first operation example, the control unit 222 of the lighting control system 2 (in the control step) causes the light source 12 to irradiate a light emission pattern C1 indicating a locus B1 in which at least a part is dimmed or erased according to a predetermined condition. In the example shown in FIG. 7, a part of the light emission pattern C1 imaged on the wall surface is erased according to a predetermined condition. In FIG. 7, the pattern indicated by the dotted line represents the light emission pattern C1 before erasure.

[0060] Here, the predetermined condition includes, for example, the elapsed time from the time when the light source 12 irradiates the light emission pattern C1. Specifically, the control unit 222 executes a process of sequentially erasing the light emission pattern C1 irradiated from the light source 12 according to the elapsed time from the oldest part of the irradiation timing from the light source 12. Thereby, the light emission pattern C1 imaged on the wall surface is gradually erased.

[0061] Further, the predetermined condition includes, for example, receiving an input for designating a location of the locus B1 to be dimmed or erased at the control terminal 3. Specifically, the user A1 operates the control terminal 3, designates a part of the locus B1 drawn on the display unit 31, and inputs an instruction to erase the designated location. Then, the control unit 222 executes a process of erasing the designated location of the light emission pattern C1 irradiated from the light source 12. Thereby, the designated location of the light emission pattern C1 imaged on the wall surface is erased.

[0062] FIG. 8 is a diagram showing a second operation example of the lighting control system 2 according to the embodiment. In the second operation example, the control unit 222 of the lighting control system 2 enlarges (or reduces) the light emission pattern C1. In the example shown in FIG. 8, the light emission pattern C1 imaged on the wall surface is enlarged. In FIG. 8, the pattern indicated by the dotted line represents the light emission pattern C1 before enlargement. Specifically, the user A1 operates the control terminal 3 and inputs an enlargement by, for example, pinching out the locus B1 drawn on the display unit 31. Then, the control unit 222 executes a process of enlarging the light emission pattern C1 irradiated from the light source 12. As a result, the light emission pattern C1 imaged on the wall surface is enlarged.

[0063] FIG. 9 is a diagram showing a third operation example of the lighting control system 2 according to the embodiment. In the third operation example, the control unit 222 of the lighting control system 2 moves the light emission pattern C1 from the original position to a predetermined position. In FIG. 9, the pattern indicated by the dotted line represents the light emission pattern C1 before movement. Specifically, the user A1 operates the control terminal 3 and inputs a movement to a predetermined position by, for example, dragging the locus B1 drawn on the display unit 31. Then, the control unit 222 executes a process of moving the light emission pattern C1 irradiated from the light source 12 from the original position to a predetermined position. As a result, the light emission pattern C1 imaged on the wall surface moves from the original position to a predetermined position.

[0064] As in the above-described first to third operation examples, the acquisition unit 221 of the lighting control system 2 according to the embodiment (in the acquisition step) acquires the parameter by receiving an input for specifying a parameter related to the locus B1 at the control terminal 3. Then, the control unit 222 (in the control step) irradiates the light emission pattern C1 from the light source 12 based on the acquired parameter. Here, the parameter includes at least one of, for example, the line type of the locus B1, the shape of the locus B1, the luminance of the locus B1, the position of the locus B1, and the size of the locus B1.

[0065] For example, in the first operation example, an input for designating and deleting a part of the locus B1 corresponds to designating a parameter related to the luminance of a part of the locus B1. Also, for example, in the second operation example, an input for enlarging or reducing the locus B1 corresponds to designating a parameter related to the size of the locus B1. Also, for example, in the third operation example, an input for moving the locus B1 to a predetermined position corresponds to designating a parameter related to the position of the locus B1.

[0066] In addition to the above-described first to third operation examples, when, for example, the user A1 operates the control terminal 3 and inputs to group a plurality of loci B1 drawn on the display unit 31 into one group, the control unit 222 may execute a process of treating a plurality of light emission patterns C1 respectively corresponding to these plurality of loci B1 as one object. Also, when, for example, the user A1 operates the control terminal 3 and inputs to copy the locus B1 drawn on the display unit 31, the control unit 222 may further irradiate the light emission pattern C1 identical to the light emission pattern C1 corresponding to the locus B1 from the light source 12.

[0067] Also, for example, when the user A1 operates the control terminal 3 and inputs to deform or change the color of at least a part of the locus B1 drawn on the display unit 31 over time, the control unit 222 may irradiate from the light source 12 a light emission pattern C1 indicating the locus B1 in which the specified at least a part deforms or changes color over time.

[0068] When, for example, vibrating the light emission pattern C1 indicating the locus B1 which is a character, a light emission pattern indicating an object that is relatively easy to vibrate, such as tofu or pudding, and that the user A1 can easily associate with vibration may be arranged beside the light emission pattern C1 indicating the locus B1 and irradiated from the light source 12. Also, the light emission pattern indicating the object may be irradiated from the light source 12 after erasing the light emission pattern C1 indicating the locus B1. In this case, it becomes easier for the user A1 to recognize that the locus B1 which is a character is vibrating.

[0069] [Advantages] The advantages of the lighting control system 2 (lighting control method) according to the embodiment will be described below. As described above, in the lighting control system 2 according to the embodiment, the light emission pattern C1 indicating the acquired locus B1 is irradiated from the light source 12 in which a plurality of individually controllable light emitting elements 121 are arranged in an array. Therefore, in the lighting control system 2 according to the embodiment, for example, when the user A1 draws the locus B1 using the control terminal 3, the locus data indicating the locus B1 is acquired and the light emission pattern C1 indicating the locus B1 is irradiated from the light source 12. Thus, there is an advantage that it is easy to reproduce the locus B1 drawn by the user A1 by lighting. And if the lighting control system 2 according to the embodiment is used by, for example, an artist, there is an advantage that it is easy to realize various effects.

[0070] Further, in the lighting control system 2 according to the embodiment, since the light emission pattern C1 is irradiated from the light source 12 in which a plurality of individually controllable light emitting elements 121 are arranged in an array, it is easy to irradiate light only to the portion corresponding to the locus B1 on the wall surface, for example. For this reason, the lighting control system 2 according to the embodiment has an advantage that it is easy to increase the contrast between the area of the locus B1 and the area other than the locus B1 as compared with a device such as a projector that irradiates light also to the area other than the locus B1 on the wall surface. Also, the lighting control system 2 according to the embodiment has an advantage that the shadow caused by the irradiation of the illumination light is more likely to be a natural shadow as compared with a device such as a projector. Also, the lighting control system 2 according to the embodiment has an advantage that it requires approximately the same power consumption as a general lighting device. Furthermore, the lighting control system 2 according to the embodiment has an advantage that it is easy to change the irradiation range without moving the light source 12 itself.

[0071] [Other Modifications, etc.] As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment.

[0072] In the above embodiment, the processing unit 33 of the control terminal 3 converts the point cloud data indicating the trajectory B1 detected by the detection unit 32 into an image and transmits the converted image to the lighting system 100. However, the present invention is not limited to this. For example, the processing unit 33 of the control terminal 3 may execute a process (transmission step) of transmitting the point cloud data indicating the trajectory B1 detected by the detection unit 32 to the lighting system 100 without converting it into an image. In this case, the control unit 222 of the lighting control system 2 may convert the received point cloud data into an image and irradiate the light source 12 with a light emission pattern C1 indicating the trajectory B1 based on the converted image. In this aspect, similar to the embodiment, an effect of reducing the delay time from when the input of the trajectory B1 is received until the light source 12 irradiates light can be expected.

[0073] In the above embodiment, the control unit 222 of the lighting control system 2 may perform anti-aliasing processing on the trajectory data acquired by the acquisition unit 221. In this case, since the edges in the image indicated by the trajectory B1 are less prominent, the outline of the light emission pattern C1 is likely to be smoother.

[0074] In the above embodiment, the processing unit 33 of the control terminal 3 may cause the display unit 31 to draw a grid. In this aspect, it becomes easier for the user A1 to draw the trajectory B1 on the display unit 31. Further, the control unit 222 of the lighting control system 2 may irradiate the light source 12 with a grid pattern corresponding to the grid drawn on the display unit 31 in addition to the light emission pattern C1. In this aspect, it becomes easier for the user A1 to draw the trajectory B1 while looking at a wall surface or the like without looking at the display unit 31 of the control terminal 3.

[0075] In the above embodiment, the light source 12 is a light source that emits white light. However, the present invention is not limited to this. For example, the light source 12 may be a light source that emits light of a color other than white. Further, the light source 12 is not limited to a light source that emits monochromatic light, and may be a light source 12 having a color mixing function capable of emitting various colors of light under the control of the lighting control system 2.

[0076] In the above-described embodiment, the light source 12 to be controlled by the lighting control system 2 is one, but it may be plural. In this case, since the light emission patterns respectively emitted from the plurality of light sources 12 can be irradiated onto a wall surface or the like as one light emission pattern C1, it is possible to irradiate the light emission pattern C1 showing a relatively large locus B1.

[0077] In the above-described embodiment, the plurality of light emitting elements 121 included in the light source 12 can all adjust the light emission intensity, but it is not limited thereto. For example, the plurality of light emitting elements 121 can all be controlled only to turn on and off, and the light emission intensity during lighting may always be constant.

[0078] In the above-described embodiment, the heat sink 14 is provided integrally with the housing 11, but it is not limited thereto. For example, the heat sink 14 may be a separate body from the housing 11 and may be fixed to the housing 11 by a predetermined means (for example, welding, adhesion, or fastening with bolts). In this case, the housing 11 may be made of, for example, resin.

[0079] In the above-described embodiment, the wireless communication between the lighting device 10 and the control terminal 3 may be short-range wireless communication such as ZigBee (registered trademark) or BLE (Bluetooth (registered trademark) Low Energy), for example. Also, the wireless communication method (communication standard) may be communication via a wide-area communication network such as the Internet. Further, the communication between the lighting device 10 and the control terminal 3 may be wired communication. The wired communication is, for example, power line carrier communication (PLC) or communication using a wired LAN.

[0080] In the above-described embodiment, the control terminal 3 is not included in the components of the lighting system 100, but it may be included in the components of the lighting system 100.

[0081] In the above embodiment, the lighting control system 2 is the processing unit 22 provided in the lighting device 10, but it is not limited thereto. For example, the lighting control system 2 may be the processing unit 33 provided in the control terminal 3. Further, the lighting control system 2 may be composed of the processing unit 33 provided in the control terminal 3 and the processing unit 22 provided in the lighting device 10.

[0082] Also, in the above embodiment, the series of processes executed by the lighting control system 2 is not limited to the processing unit 22 provided in the lighting device 10 and the processing unit 33 provided in the control terminal 3, and may be executed by an external device other than the lighting device 10 and the control terminal 3, for example. In this case, the external device may be equipped with, for example, an AI (Artificial Intelligence) model, and the above series of processes may be executed by the AI model. In this aspect, since the computational load on the processing unit 22 provided in the lighting device 10 or the processing unit 33 provided in the control terminal 3 can be reduced, an effect of reducing the delay time from when the input of the locus B1 is received until the light source 12 emits light can be expected as compared with the case where the above series of processes are executed by the processing units 22 and 33.

[0083] Also, in the above embodiment, the process executed by a specific processing unit may be executed by another processing unit. Also, the order of a plurality of processes may be changed, or a plurality of processes may be executed in parallel.

[0084] Also, in the above embodiment, the lighting system 100 is realized as one lighting device 10, but it is not limited thereto. For example, the lighting system 100 may be realized as a plurality of devices.

[0085] Also, for example, the processes described in the above embodiment may be realized by centralized processing using a single device (system), or may be realized by distributed processing using a plurality of devices. Also, the processor that executes the program corresponding to the processes described in the above embodiment may be singular or plural. That is, centralized processing or distributed processing may be performed.

[0086] Also, in the above embodiment, all or part of the components such as the control unit 222 may be configured by dedicated hardware, or may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU (Central Processing Unit) or a processor reading and executing a software program recorded on a recording medium such as an HDD (Hard Disk Drive) or a semiconductor memory.

[0087] Also, components such as the control unit 222 may be configured by one or more electronic circuits. Each of the one or more electronic circuits may be a general-purpose circuit or a dedicated circuit.

[0088] One or more electronic circuits may include, for example, semiconductor devices, ICs, or LSIs, etc. The IC or LSI may be integrated on one chip or on a plurality of chips. Here, although it is called an IC or an LSI, the name may change depending on the degree of integration, and it may be called a system LSI, a VLSI (Very Large Scale Integration), or a ULSI (Ultra Large Scale Integration). Also, an FPGA programmed after the manufacture of the LSI can be used for the same purpose.

[0089] Also, the overall or specific aspects of the present invention may be realized by a system, a device, a method, an integrated circuit, or a computer program. Alternatively, it may be realized by a computer-readable non-transitory recording medium such as an optical disk, an HDD, or a semiconductor memory on which the computer program is stored. Also, it may be realized by any combination of a system, a device, a method, an integrated circuit, a computer program, and a recording medium.

[0090] In addition, forms obtained by applying various modifications that occur to those skilled in the art to the above-described embodiments, and forms realized by arbitrarily combining the components and functions in the above-described embodiments without departing from the spirit of the present invention are also included in the present invention.

[0091] (Summary) As described above, the lighting control method according to the first aspect is a lighting control method executed by one or more processors, and includes an acquisition step (S1) and a control step (S2). In the acquisition step, trajectory data indicating trajectory B1 is acquired. In the control step, based on the acquired trajectory data, the light source 12 in which a plurality of individually controllable light emitting elements 121 are arranged in an array is controlled, so that a light emission pattern C1 indicating trajectory B1 is irradiated from the light source 12.

[0092] According to such a lighting control method, for example, when user A1 draws trajectory B1 using control terminal 3, trajectory data indicating the trajectory B1 is acquired and the light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12. Therefore, there is an advantage that it is easy to reproduce the trajectory B1 drawn by user A1 by lighting.

[0093] Further, for example, in the lighting control method according to the second aspect, in the first aspect, in the acquisition step, trajectory data is acquired by detecting the trajectory drawn by user A1 with the control terminal 3 having the detection unit 32 that detects the movement of user A1.

[0094] According to such a lighting control method, since the light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12 in real time following the input of the trajectory B1 by user A1, there is an advantage that it is easy to realize lighting that makes it feel as if user A1 directly draws the trajectory B1 on a wall surface or the like.

[0095] Further, for example, in the lighting control method according to the third aspect, in the second aspect, the control terminal 3 executes a drawing step of causing the display unit 31 included in the control terminal 3 to draw the trajectory B1.

[0096] According to such a lighting control method, since the trajectory B1 drawn by user A1 is drawn on the display unit 31, there is an advantage that it is easy for user A1 to grasp what kind of trajectory B1 is drawn.

[0097] Also, for example, in the lighting control method according to the fourth aspect, in the second or third aspect, the control terminal 3 further executes a transmission step of compressing an image showing the trajectory B1 and transmitting the compressed image as trajectory data to the lighting system 100 (lighting device 10) having the light source 12. The detection step and the transmission step are time-divisionally controlled according to the time required for each process.

[0098] According to such a lighting control method, there is an advantage that it is easy to reduce the delay time from when the control terminal 3 receives the input of the trajectory B1 by user A1 until the light source 12 irradiates illumination light. Also, according to such a lighting control method, an event such as the input of the trajectory B1 by user A1 not being received during the standby time from when the transmission step is executed until the next transmission step is executed does not occur, making it easier for user A1 to smoothly input the trajectory B1 and making it less likely for user A1 to feel stressed.

[0099] Also, for example, in the lighting control method according to the fifth aspect, in the fourth aspect, the detection step and the transmission step are executed so that the interval for transmitting the trajectory data to the lighting system 100 (lighting device 10) is constant.

[0100] According to such a lighting control method, for example, in either the detection step or the transmission step, if the time required for the process becomes excessive and the above interval is likely to be disrupted, the process is discarded and the next process is executed, so there is an advantage that the above delay time can be further easily reduced.

[0101] Further, for example, in the lighting control method according to the sixth aspect, in the fourth or fifth aspect, in the transmission step, trajectory data is obtained by converting data obtained by thinning out some points from the point group data indicating the trajectory B1 into an image, or by converting only the trajectory B1 drawn on the display unit 31 into an image.

[0102] According to such a lighting control method, since the data amount of the trajectory data to be transmitted can be reduced, there is an advantage that it is easy to reduce the above-mentioned delay time.

[0103] Further, for example, in the lighting control method according to the seventh aspect, in the second or third aspect, the control terminal 3 further executes a transmission step of transmitting the point group data indicating the trajectory B1 to the lighting system 100 (lighting device 10) having the light source 12. In the control step, the received point group data is converted into an image, and a light emission pattern C1 indicating the trajectory B1 is irradiated from the light source 12 based on the converted image.

[0104] According to such a lighting control method, since the process of converting the point group data into an image does not need to be performed by the control terminal 3, there is an advantage that it is easy to reduce the above-mentioned delay time.

[0105] Further, for example, in the lighting control method according to the eighth aspect, in any one of the second to seventh aspects, in the acquisition step, the parameter regarding the trajectory B1 is acquired by receiving an input for designating the parameter at the control terminal 3. In the control step, a light emission pattern C1 is irradiated from the light source 12 based on the acquired parameter.

[0106] According to such a lighting control method, since the light emission pattern C1 can be changed by designating the parameter regarding the trajectory B1 drawn by the user A1, there is an advantage that the light emission pattern C1 can be adjusted without the user A1 drawing the trajectory B1 again.

[0107] Further, for example, in the lighting control method according to the ninth aspect, in the eighth aspect, the parameter includes at least one of the line type of the locus B1, the shape of the locus B1, the luminance of the locus B1, the position of the locus B1, and the size of the locus B1.

[0108] According to such a lighting control method, there is an advantage that at least one of the line type, shape, luminance, position, and size of the light emission pattern C1 indicating the locus B1 drawn by the user A1 can be adjusted.

[0109] Further, for example, in the lighting control method according to the tenth aspect, in any one of the second to ninth aspects, in the control step, the light source 12 irradiates the light emission pattern C1 indicating the locus B1 in which at least a part is dimmed or erased according to a predetermined condition.

[0110] According to such a lighting control method, since at least a part of the light emission pattern C1 is dimmed or erased, there is an advantage that it is easy to prevent the space where the light emission pattern C1 is irradiated from becoming too bright.

[0111] Further, for example, in the lighting control method according to the eleventh aspect, in the tenth aspect, the predetermined condition includes the elapsed time from the time when the light source 12 irradiates the light emission pattern C1.

[0112] According to such a lighting control method, since the light emission pattern C1 is gradually dimmed or erased as time passes, there is an advantage that it is easy to perform a momentary effect such as a fireworks display.

[0113] Further, for example, in the lighting control method according to the twelfth aspect, in the tenth or eleventh aspect, the predetermined condition includes receiving an input for designating a portion of the locus B1 to be dimmed or erased at the control terminal 3.

[0114] According to such a lighting control method, since the portion designated by the user A1 in the light emission pattern C1 can be dimmed or erased, there is an advantage that it is easy for the user A1 to irradiate the desired light emission pattern C1 from the light source 12.

[0115] Further, for example, in the lighting control method according to the 13th aspect, in any one of the 2nd to 12th aspects, in the control step, a light emission pattern C1 showing a locus B1 that is at least partially deformed or discolored over time is irradiated from the light source 12.

[0116] According to such a lighting control method, since at least a part of the light emission pattern C1 is deformed or discolored over time, there is an advantage that it is easy to perform various effects.

[0117] Further, for example, the program according to the 14th aspect causes one or more processors to execute the lighting control method according to any one of the 1st to 13th aspects.

[0118] According to such a program, there is an advantage that the same effect as that of any one of the 1st to 12th lighting control methods can be achieved.

[0119] Further, for example, the lighting control system 2 according to the 15th aspect includes an acquisition unit 221 and a control unit 222. The acquisition unit 221 acquires locus data indicating the locus B1. The control unit 222 controls the light source 12 in which a plurality of light emitting elements 121 that can be individually controlled are arranged in an array based on the locus data acquired by the acquisition unit 221, so as to irradiate the light source 12 with a light emission pattern C1 showing the locus B1.

[0120] According to such a lighting control system 2, for example, when the user A1 draws the locus B1 using the control terminal 3, the locus data indicating the locus B1 is acquired and the light emission pattern C1 showing the locus B1 is irradiated from the light source 12. Therefore, there is an advantage that it is easy to reproduce the locus B1 drawn by the user A1 by lighting.

[0121] Further, for example, the lighting system 100 according to the 16th aspect includes the lighting control system 2 according to the 15th aspect, a light source 12, and a housing 11 that houses the lighting control system 2 and the light source 12.

[0122] According to such an illumination system 100, for example, when user A1 draws a locus B1 using the control terminal 3, locus data indicating the locus B1 is acquired and a light emission pattern C1 indicating the locus B1 is irradiated from the light source 12. Thus, there is an advantage that the locus B1 drawn by user A1 can be easily reproduced by illumination.

Explanation of Reference Numerals

[0123] 100 Illumination system 11 Housing 12 Light source 121 Light emitting element 2 Illumination control system 221 Acquisition unit 222 Control unit 3 Control terminal 31 Display unit 32 Detection unit A1 User B1 Locus C1 Light emission pattern

Claims

1. A lighting control method executed by one or more processors, comprising: an acquisition step of acquiring trajectory data indicating a trajectory; a control step of controlling a light source in which a plurality of individually controllable light emitting elements are arranged in an array based on the acquired trajectory data, so as to irradiate a light emission pattern indicating the trajectory from the light source; A lighting control method.

2. In the acquisition step, the trajectory data is acquired by detecting the trajectory drawn by the user at a control terminal having a detection unit that detects the movement of the user. The lighting control method according to Claim 1.

3. The control terminal executes a drawing step of drawing the trajectory on a display unit included in the control terminal. The lighting control method according to Claim 2.

4. The control terminal further executes a transmission step of compressing an image indicating the trajectory and transmitting the compressed image as the trajectory data to a lighting system having the light source, wherein the detection step of detecting the trajectory drawn by the user and the transmission step are time-divisionally controlled according to the time required for each process. The lighting control method according to Claim 2 or 3.

5. The detection step and the transmission step are executed such that the interval for transmitting the trajectory data to the lighting system is constant. The lighting control method according to Claim 4.

6. In the transmission step, the trajectory data is acquired by converting data obtained by thinning out some points from the point cloud data indicating the trajectory into an image, or by converting only the trajectory drawn on the display unit into the image. The lighting control method according to Claim 4.

7. The control terminal further executes a transmission step of transmitting point cloud data indicating the trajectory to a lighting system having the light source, and in the control step, the received point cloud data is converted into an image, and a light emission pattern indicating the trajectory is irradiated from the light source based on the converted image. The lighting control method according to Claim 2 or 3.

8. In the acquisition step, an input for specifying a parameter related to the trajectory is received at the control terminal to acquire the parameter, and in the control step, the light emission pattern is irradiated from the light source based on the acquired parameter. The lighting control method according to Claim 2 or 3.

9. The parameter includes at least one of the line type of the locus, the shape of the locus, the luminance of the locus, the position of the locus, and the size of the locus. The lighting control method according to claim 8.

10. In the control step, the light source irradiates the light emission pattern indicating the locus in which at least a part thereof is dimmed or erased according to a predetermined condition. The lighting control method according to claim 2 or 3.

11. The predetermined condition includes the elapsed time since the light source irradiated the light emission pattern. The lighting control method according to claim 10.

12. The predetermined condition includes receiving an input for designating a location of the locus to be dimmed or erased at the control terminal. The lighting control method according to claim 10.

13. In the control step, the light source irradiates the light emission pattern indicating the locus in which at least a part thereof is deformed or discolored as time elapses. The lighting control method according to claim 2 or 3.

14. One or more processors, Cause the lighting control method according to claim 1 to be executed. Program.

15. An acquisition unit that acquires locus data indicating a locus, A control unit that controls a light source in which a plurality of light emitting elements that can be individually controlled are arranged in an array based on the locus data acquired by the acquisition unit, and irradiates the light source with a light emission pattern indicating the locus. Lighting control system.

16. The lighting control system according to claim 15, The light source, A housing that houses the lighting control system and the light source. Lighting system.

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