Illumination device, illumination control method, and program

Abstract

To provide an illumination device capable of easily changing the setting of the illumination pattern of an illumination device capable of illuminating in all directions, an illumination control method, and a program.SOLUTION: An illumination device 2 includes: multiple light sources 11 for illuminating in all directions; a first detection unit 21 that detects the installation posture of the illumination device 2; and a control unit 12 that changes the illumination pattern of each of the multiple light sources 11 depending on the installation posture of the illumination device 2 detected by the first detection unit 21.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present disclosure relates to a lighting device, a lighting control method, and a program. [Background technology]

[0002] Conventional Patent Document 1 discloses a transparent display in which, when the transparent display moves between a first and a second posture, the format of a character displayed on the transparent display is corrected by rotating the display by approximately 180° about a first axis. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4594096 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when the transmissive display of Patent Document 1 is applied to a lighting device capable of emitting light in all directions, the position of the lighting device becomes more complicated, making it difficult to set the light emission pattern.

[0005] In view of the above, an object of the present disclosure is to provide a lighting device, a lighting control method, and a program that can easily set the light emission pattern of a lighting device that can illuminate in all directions. [Means for solving the problem]

[0006] An illumination device according to one aspect of the present disclosure includes: 1. A lighting device, comprising: The lighting device includes a plurality of light sources that illuminate in all directions, a detection unit that detects the installation orientation of the lighting device, and a control unit that changes the light emission pattern of each of the plurality of light sources according to the installation orientation of the lighting device detected by the detection unit. The control unit controls each of the plurality of light sources so that, with respect to a light emission pattern when the lighting device emits light in a first posture and a light emission pattern when the lighting device emits light in a second posture that is an installation posture different from the first posture, when the lighting device changes from the first posture to the second posture, a light emission position of the light emission pattern when the lighting device is observed from a fixed point is maintained. do.

[0007] Also, a lighting control method according to an aspect of the present disclosure includes detecting an installation attitude of a lighting device, changing a light emission pattern of each of a plurality of light sources capable of illuminating in all directions in accordance with the installation attitude, and controlling each of the plurality of light sources such that a light emission pattern when the lighting device emits light in a first attitude and a light emission pattern when the lighting device emits light in a second attitude that is an installation attitude different from the first attitude are similar to each other. and controlling each of the plurality of light sources so that, with respect to a light emission pattern when the lighting device emits light in the first posture and a light emission pattern when the lighting device emits light in the second posture, which is an installation posture different from the first posture, when the lighting device changes from the first posture to the second posture, a light emission position of the light emission pattern when the lighting device is observed from a fixed point is maintained. do.

[0008] Moreover, a program according to an aspect of the present disclosure causes a computer to execute a lighting control method. Effect of the Invention

[0009] According to the lighting device etc. of the present disclosure, it is possible to easily set the light emission pattern of a lighting device that can illuminate in all directions. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing an illumination device according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view showing the lighting device according to the embodiment. [Diagram 3] FIG. 3 is a block diagram showing a lighting device according to an embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing the lighting device taken along line IV-IV in FIG. [Diagram 5] FIG. 5 is a flowchart showing a processing operation when initially setting the illumination device according to the embodiment. [Figure 6] FIG. 6 is a diagram showing a light emission position when setting the origin of a light source in the initial setting of a lighting device according to an embodiment. [Figure 7] FIG. 7 is a diagram showing a state in which polar coordinates within the lighting device are reset in the initial setting of the lighting device according to the embodiment. [Figure 8] FIG. 8 is a flowchart showing a processing operation when the installation attitude of the lighting device according to the embodiment is changed. [Figure 9]FIG. 9 is a diagram showing a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed. [Figure 10] FIG. 10 is a diagram showing a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed while the entire lighting device is illuminated. [Figure 11] FIG. 11 is a diagram showing a first example of a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed. [Figure 12] FIG. 12 is a diagram showing a second example of a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed. [Figure 13] FIG. 13 is a diagram showing a third example of a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed. [Figure 14] FIG. 14 is a diagram showing a fourth example of a light emission pattern that is reset when the installation attitude of the lighting device according to the embodiment is changed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component arrangements and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components that are not described in the independent claims are described as optional components.

[0012] In addition, each figure is a schematic diagram and is not necessarily illustrated precisely. In addition, in each figure, the same components are given the same reference numerals. In addition, expressions such as "approximately spherical" are used in the following embodiments. For example, "approximately spherical" does not only mean that it is completely spherical, but also means that it is substantially spherical, that is, it includes an error of, for example, about several percent. In addition, "approximately spherical" means that it is rectangular within the range in which the effects of the present disclosure can be achieved. The same applies to other expressions using "approximately".

[0013] Hereinafter, the embodiment will be specifically described with reference to the drawings.

[0014] (Embodiment) <Configuration: Lighting system 1> The configurations of the lighting device 2 and the lighting system 1 according to the present embodiment will be described.

[0015] Fig. 1 is a perspective view showing a lighting device 2 according to an embodiment. Fig. 2 is an exploded perspective view showing a lighting device 2 according to an embodiment. Fig. 3 is a block diagram showing a lighting device 2 according to an embodiment.

[0016] 1 to 3, the lighting system 1 uses a terminal device 20 in Fig. 3 to operate the terminal device 20 to set a light emission pattern of the lighting device 2, and controls the lighting device 2 based on control information for executing the set light emission pattern. That is, the lighting system 1 can control the light emission pattern of the lighting device 2 by controlling the light emission patterns of the multiple light sources 11 of the lighting device 2, such as turning on and off, lighting (illumination) direction, luminance (brightness), or light color, according to the control information.

[0017] The lighting system 1 can also acquire control information in which a light emission pattern of the lighting device 2 is set from an external device via a network, and can control the lighting device 2 based on the acquired control information, or control the lighting device 2 based on the set light emission pattern by setting the light emission pattern to the light emission pattern included in the control information. The external device is a system or terminal device other than the lighting system 1.

[0018] The lighting system 1 includes a lighting device 2 and a terminal device 20. In the present embodiment, the lighting device 2 is exemplified, but a plurality of lighting devices 2 may be used and the number of lighting devices 2 is not limited to one.

[0019] [Lighting fixture 2] The lighting device 2 is arranged, for example, on a ceiling, floor, wall, desk, etc. inside a building. The external shape of the lighting device 2 is, for example, substantially spherical or substantially polyhedral. The lighting device 2 has a plurality of light sources 11. The plurality of light sources 11 are arranged throughout the lighting device 2. Therefore, the lighting device 2 can irradiate light in all directions using the plurality of light sources 11, and can illuminate all directions. Specifically, the lighting device 2 is a lighting fixture that irradiates (illuminates) light in all directions of 360° using the plurality of light sources 11 that illuminate corresponding directions. The 360° omnidirectional directions refer to all directions from the center of the lighting device 2 toward any point on the light-emitting surface 2a.

[0020] Furthermore, the lighting device 2 selectively emits light from the multiple light sources 11, thereby irradiating light in any direction centered on the lighting device 2. In other words, the illumination direction of the light emitted from the lighting device 2 is arbitrary. For example, the lighting device 2 irradiates light in all directions of 360° by simultaneously emitting light from all light sources 11, or irradiates light in only some directions by emitting light from some of the multiple light sources 11. In other words, the lighting device 2 not only irradiates light in all directions of 360°, but also irradiates light in a spot-like manner in any direction.

[0021] Furthermore, the lighting device 2 can be configured to emit light in a fixed direction by performing initial settings. In other words, if the lighting device 2 is initially set up, it can emit light in a fixed direction even if the installation posture is changed. The installation posture includes the direction, arrangement position, inclination, etc. of the lighting device 2.

[0022] Furthermore, the lighting device 2 has a dimming control function and a color adjustment control function. Specifically, the lighting device 2 changes the luminance (brightness) and light color (color temperature or color) of the emitted light. In this embodiment, the lighting device 2 changes the luminance and light color of the light for each of the multiple light sources 11.

[0023] Moreover, the lighting device 2 in this embodiment irradiates light evenly and in full color on an object such as a wall surface. For this reason, as described later, three-color light sources of RGB (Red, Green, Blue) are used as each light source 11. Moreover, the multiple light sources 11 are arranged at a high density and evenly distributed without unevenness. As a result, the lighting device 2 can perform the presentation of the space in which the lighting device 2 is arranged by controlling the light it irradiates.

[0024] Furthermore, unlike a display that displays an image, the lighting device 2 in this embodiment needs to illuminate a wall surface or the like, and therefore requires high light output from the light source 11. For this reason, the luminance per light source 11 is higher than that of an LED (Light Emitting Diode) light source used in the backlight of a liquid crystal display or an LED light source used in an LED display.

[0025] The lighting device 2 includes a housing 5, a light-transmitting section 6, a plurality of light sources 11, a first detection section 21, a second detection section 22, a control section 12, a power supply section 13, a storage section 15, and a communication section .

[0026] The housing 5 is an exterior cover having a substantially spherical or polyhedral outer shape. In the present embodiment, the housing 5 forms a polyhedral outer shape. That is, the outer surface of the housing 5 is composed of a plurality of faces. Specifically, the housing 5 forms an icosahedron outer shape with twelve vertices. That is, the outer surface of the housing 5 is composed of twenty equilateral triangular faces.

[0027] Furthermore, the housing 5 of the present embodiment is made of white or black ABS (Acrylonitrile Butadiene Styrene), PC (Poly Carbonate), or the like, and has a thickness of about 1 to 2 (mm).

[0028] As shown in Fig. 4, the housing 5 is provided with an internal space K that is hollow inside. A plurality of light sources 11, a control unit 12, a power supply unit 13, a storage unit 15, etc. are arranged in the internal space K. In other words, the internal space K is a control unit installation space for installing the plurality of light sources 11, the control unit 12, the power supply unit 13, the storage unit 15, etc. Fig. 4 is a cross-sectional view showing the lighting device 2 taken along line IV-IV in Fig. 1.

[0029] 2 and 4, the housing 5 is formed with a plurality of through holes 5a for passing light emitted from each of the plurality of light emitting elements 11a. The plurality of through holes 5a correspond one-to-one to the plurality of light emitting elements 11a, and are formed at positions facing the plurality of light emitting elements 11a. In this embodiment, three through holes 5a are formed in an equilateral triangular plane forming the outer surface of the housing 5.

[0030] A plurality of light-transmitting portions 6 are provided in each of the plurality of through holes 5a of the housing 5 to transmit light emitted from the light source 11. The plurality of light-transmitting portions 6 correspond one-to-one to the plurality of light-emitting elements 11a, and each light-transmitting portion 6 is disposed to face each light-emitting element 11a. Specifically, the plurality of light-transmitting portions 6 are provided on the corner sides of the equilateral triangle surface. Moreover, each light-transmitting portion 6 is provided to coincide with the optical axis of the corresponding light-emitting element 11a.

[0031] The light-transmitting portion 6 is made of a light-transmitting member such as a resin material having light-transmitting properties, such as a transparent resin, or a transparent glass material, and is fitted into a through hole 5a provided in the housing 5. In this embodiment, the shape of the through hole 5a when viewed from the front is circular. The light-transmitting portion 6 has a function as a lens that controls the distribution of light from the light-emitting element 11a that transmits through the light-transmitting portion 6. As an example, the light-transmitting portion 6 is a lens that diffuses and controls the distribution of light from the light-emitting element 11a that transmits through the light-transmitting portion 6. The light-transmitting portion 6 has a surface on which a plurality of minute irregularities (dots, prisms) are formed by a graining process or the like, or a dot pattern is printed on the surface. This makes it difficult to visually recognize the presence of the light-emitting element 11a inside the housing 5 from the outside through the light-transmitting portion 6.

[0032] Each of the light sources 11 is a light emitting module having at least one light emitting element 11a. In this embodiment, each of the light sources 11 has a plurality of light emitting elements 11a. Each of the light sources 11 emits light in a predetermined light emitting pattern based on control information from the control unit 12.

[0033] The multiple light sources 11 are arranged to form a substantially spherical or substantially polyhedral outer shape. In this embodiment, the multiple light sources 11 form an icosahedral outer shape with twelve vertices. In this embodiment, nineteen light sources 11 each having an equilateral triangular shape and a connection board having an equilateral triangular shape are provided. In this embodiment, the multiple light sources 11 are formed by twenty light sources 11 each having an equilateral triangular shape.

[0034] Each of the light sources 11 includes a light emitting element 11a and a substrate 11b.

[0035] The plurality of light-emitting elements 11a are arranged substantially throughout the entire lighting device 2. That is, the plurality of light-emitting elements 11a are scattered so that the lighting device 2 can irradiate light in all directions. Each of the light-emitting elements 11a can illuminate a corresponding direction. In this embodiment, since the plurality of light-emitting elements 11a are mounted on one substrate 11b, the directions of light emitted by the light-emitting elements 11a are the same on the same substrate. Note that the directions of light emitted by each of the light-emitting elements 11a may be different. Each of the plurality of light-emitting elements 11a emits light toward the outside of the lighting device 2. Specifically, the optical axis of each of the light-emitting elements 11a is perpendicular to the mounting surface of the substrate 11b. The optical axis is a straight line along the main light emitted by each of the light-emitting elements 11a.

[0036] Each light-emitting element 11a emits light of two or more colors. Specifically, each light-emitting element 11a is an RGB three-color light source, and emits three monochromatic lights of red, blue, and green, and also emits colored light or white light obtained by modulating these three monochromatic lights.

[0037] Specifically, each light-emitting element 11a is a surface mount device (SMD) type LED element in which an LED is packaged, and includes a container (package), a plurality of LED chips mounted in the container, and a sealing member that seals the plurality of LED chips. In this embodiment, a red LED chip that emits red light, a blue LED chip that emits blue light, and a green LED chip that emits green light are mounted as the plurality of LED chips. The sealing member is a translucent insulating resin material such as silicone resin. Note that a light diffusing material such as silica and a filler may be dispersed in the sealing member.

[0038] The light emitting element 11a thus configured is mounted on the mounting surface of the substrate 11b. In this embodiment, a plurality of light emitting elements 11a are mounted on one substrate 11b. The plurality of light emitting elements 11a are arranged at regular intervals when the lighting device 2 is viewed as a whole. In this embodiment, three light emitting elements 11a are mounted on one substrate 11b. Moreover, the plurality of light emitting elements 11a are arranged at regular intervals on each substrate 11b.

[0039] The substrate 11b is a mounting substrate having a mounting surface for mounting the light emitting element 11a. Although not shown, metal wiring and a connector for power supply are provided on the mounting surface of the substrate 11b. In this embodiment, the connectors of the substrates 11b are electrically connected to each other, so that the substrates 11b are electrically connected to the control unit 12 through one wiring.

[0040] Moreover, the shape of each of the substrates 11b has rotational symmetry. That is, the shape of each of the substrates 11b is a circle, a polygon, or the like. In this embodiment, the substrate 11b has a shape corresponding to a polygonal surface constituting a part of the substantially polyhedral outer surface of the housing 5. In this embodiment, the substrate 11b is configured by substrates 11b having a regular triangular shape in a plan view. Then, a polyhedron is configured by combining a plurality of the regular triangular substrates 11b. In this way, the illumination device 2 is configured by a plurality of substrates 11b in a substantially spherical or polyhedral shape.

[0041] Each of the substrates 11b is attached to the polyhedral housing 5 with a fixing member such as a screw, and is fixed to the housing 5. In the present embodiment, the housing 5 is an icosahedron. Therefore, the housing 5 allows the arrangement of the multiple light sources 11 to be configured in an icosahedral shape.

[0042] In this embodiment, a predetermined face of the icosahedron is provided with a power supply connector for supplying power from an external power source to the power supply unit 13, a communication connector for communicating with an external device and a terminal device, and a connecting part to which a mooring fitting that functions as a mounting member for mounting the lighting device 2 to a ceiling, a wall, or the like is connected. For this reason, in this embodiment, the light source 11 is not arranged on the predetermined face. In other words, in this embodiment, the housing 5 has the multiple light sources 11 arranged on 19 faces of the icosahedron.

[0043] A plurality of light emitting elements 11a are regularly arranged on the substrate 11b. In this embodiment, the light emitting elements 11a (three in total) are mounted on each of the corners of the equilateral triangle of the substrate 11b. In this embodiment, the light sources 11 are arranged on nineteen faces of the icosahedron, and therefore the lighting device 2 uses 57 (=19 sheets×3) light emitting elements 11a.

[0044] The substrate 11b may be, for example, a metal-based substrate obtained by applying an insulating coating to a base material made of a metal material such as aluminum or copper, a ceramic substrate which is a sintered body of a ceramic material such as alumina, or a resin substrate based on a resin material. In this embodiment, a printed wiring board made of a glass epoxy board on which metal wiring is formed is used as the substrate 11b. Although the substrate 11b is a rigid substrate, it may also be a flexible substrate.

[0045] The first detection unit 21 detects the installation attitude of the lighting device 2. The first detection unit 21 outputs information indicating the detected installation attitude of the lighting device 2 to the control unit 12. Here, the installation attitude of the lighting device 2 is, for example, the inclination of the lighting device 2 based on the amount of change with respect to an initial origin that is predetermined at the time of shipment from the factory or an origin that is set in the initial settings. In addition, the installation attitude is not limited to being fixed to a ceiling, floor, wall, desk, etc., but also includes an attitude where the lighting device 2 is simply placed on a floor, desk, etc. The first detection unit 21 is an example of a detection unit.

[0046] In addition, the first detection unit 21 detects the rotational acceleration of the lighting device 2, which is the amount of change in the installation attitude of the lighting device 2. The first detection unit 21 outputs information indicating the detected rotational acceleration of the lighting device 2 to the control unit 12.

[0047] In this embodiment, the first detection unit 21 is a gyro sensor that can detect the installation attitude of the lighting device 2 and can also detect the rotation acceleration of the lighting device 2. In this embodiment, the first detection unit 21 is configured with at least two systems of detection units so as to be able to detect the amount of rotation of at least two axes in the lighting device 2. For this reason, in this embodiment, the first detection unit 21 can detect the amount of rotation of at least two orthogonal axes (for example, at least two axes of the pitch axis, roll axis, and yaw axis) in the lighting device 2. Note that the detection unit that can detect the installation attitude of the lighting device 2 and the detection unit that can detect the rotation acceleration of the lighting device 2 may be separate detection units.

[0048] The second detection unit 22 detects the orientations of the lighting device 2, east-west, north-south and up-down. The second detection unit 22 outputs information indicating the detected orientation of the lighting device 2 to the control unit 12. The second detection unit 22 is at least one of a gyro sensor and an electronic compass. In this embodiment, the orientation is, for example, the orientation of an initial origin determined in advance at the time of shipment from the factory, an origin set in the initial settings, or the like, relative to the center of the lighting device 2. The second detection unit 22 is an example of a detection unit.

[0049] The control unit 12 is a control circuit that controls each part of the lighting device 2. The control unit 12 performs various controls, for example, by a processor executing a program stored in the storage unit 15. The processor is configured by an MPU (Micro Processing Unit), a CPU (Central Processing Unit), a DSP (Digital Signal Processor), a GPU (Graphical Processing Unit), a SOC (System on a Chip), or the like.

[0050] Furthermore, the control unit 12 controls the plurality of light sources 11 according to the light emission pattern by executing the light emission pattern stored in the storage unit 15. Specifically, the control unit 12 controls the light emission pattern of the light emitted by each light source 11 so as to light up in a light emission pattern according to control information acquired from the storage unit 15 or an external device. That is, the control unit 12 individually controls the light emission pattern of the light emitted by all the light sources 11 included in the lighting device 2. For example, the control unit 12 controls the turning on and off (on and off), changing the brightness, or changing the light color according to the light emission pattern of each light source 11.

[0051] Here, the control information includes luminance information indicating the luminance of light emitted by a specific light source 11 among the multiple light sources 11 to be controlled, and color information indicating the color of light emitted by the light source 11. The control information also includes identifiers of the light sources 11 to be caused to emit light, periods during which the light sources 11 emit light for each identifier, etc.

[0052] Furthermore, the control unit 12 changes the light emission pattern of each of the multiple light sources 11, which is a change in light emission over time, in accordance with the installation attitude of the lighting device 2 detected by the first detection unit 21. In other words, the control unit 12 changes the light emission pattern of each of the multiple light sources 11 in accordance with the change in the installation attitude of the lighting device 2.

[0053] Specifically, when the control unit 12 changes the installation posture of the lighting device 2 after installing the lighting device 2 and performing initial settings, the control unit 12 changes the light emission pattern of each of the multiple light sources 11 according to the changed installation posture. More specifically, the control unit 12 changes the light emission pattern of each of the multiple light sources 11 based on the installation posture of the lighting device 2 indicated in the information acquired from the first detection unit 21. For example, the control unit 12 controls the multiple light sources 11 to illuminate with a first light emission pattern when the lighting device 2 is in a first posture, and to illuminate with a second light emission pattern that is different from the first posture when the installation posture of the lighting device 2 changes to a second posture that is different from the first posture.

[0054] That is, the control unit 12 controls each of the multiple light sources 11 so that the light emission pattern when the lighting device 2 emits light in a first position and the light emission pattern when the lighting device 2 emits light in a second position that is a different position from the first position are maintained to be similar. For this reason, the control unit 12 controls the multiple light sources 11 so that the light emission position is substantially maintained (unchanged) when the lighting device 2 is observed from a fixed point even if the installation position of the lighting device 2 changes. Therefore, originally, when the installation position of the lighting device changes, the direction in which light is irradiated changes, and the like, so the illumination state on the irradiation surface also changes. However, in the lighting device 2 of this embodiment, the light emission pattern is maintained even if the installation position changes, so the illumination state on the irradiation surface does not substantially change.

[0055] Furthermore, the control unit 12 predicts the amount of change in the light emission pattern of each of the multiple light sources 11 according to the rotational acceleration detected by the first detection unit 21, and controls the light emission pattern of each of the multiple light sources 11.

[0056] Specifically, when the lighting device 2 changes from the first attitude to the second attitude, the control unit 12 can estimate that the lighting device 2 is changing from the first attitude to the second attitude based on the rotational acceleration indicated in the information acquired from the first detection unit 21. For this reason, the control unit 12 controls each of the multiple light sources 11 so as to maintain a light emission pattern similar to the light emission pattern when the lighting device 2 emits light in the first attitude and the second attitude when observed from a fixed point, even if the attitude of the lighting device 2 changes rapidly.

[0057] Furthermore, the control unit 12 sets a preset initial value according to the orientation of the lighting device 2 detected by the second detection unit 22. Specifically, the control unit 12 controls each of the multiple light sources 11 so as to maintain the light emission pattern based on the set origin of the lighting device 2 and the orientation of the lighting device 2 indicated in the information acquired from the second detection unit 22.

[0058] In this embodiment, the control unit 12 is a control circuit having a long plate shape, and is arranged in the housing 5 so as to be in a vertical position relative to a predetermined surface on which the power supply connector and the like are provided. Specifically, the control unit 12 is arranged in a position standing up substantially vertically relative to the predetermined surface. This makes it possible to arrange the control unit 12 so as not to compress the electronic components that constitute the control unit 12, while suppressing an increase in the area of ​​the board that constitutes the control unit 12, compared to a case in which the control unit 12 is arranged substantially parallel to the predetermined surface.

[0059] The power supply unit 13 has a function of supplying power to each unit of the lighting device 2. The power supply unit 13 is, for example, a power supply circuit in which a plurality of electronic components are mounted on a printed circuit board. The power supply unit 13 generates, for example, drive power for causing each of the plurality of light sources 11 to emit light. Specifically, the power supply unit 13 generates drive power for causing the light sources 11 to emit light, and supplies this drive power to each of the light sources 11. In other words, the power supply unit 13 converts commercial AC power into DC power, and supplies this DC power to each of the light sources 11 as drive power for causing the light sources 11 to emit light, causing the light sources 11 to emit light.

[0060] The communication unit 14 has a function of communicating with the terminal device 20. Specifically, the communication unit 14 receives an instruction for performing initial settings from the terminal device 20, and receives control information for controlling the light emission pattern of the lighting device 2 from the terminal device 20. The instruction and control information received by the communication unit 14 are output to the control unit 12. The communication method used by the communication unit 14 is, for example, a wide area network (WAN), a local area network (LAN), power line communication, infrared communication, short-distance wireless communication (e.g., Bluetooth (registered trademark) communication), or a mobile communication for a mobile phone.

[0061] The storage unit 15 stores the orientation of the lighting device 2 indicated at the origin set in the initial setting, the light emission pattern of the multiple light sources 11, and the like. The light emission pattern is stored in the storage unit 15 by being set by the terminal device 20 or obtained from an external device. The storage unit 15 also periodically stores control information and the like obtained by the control unit 12. The storage unit 15 includes, for example, a primary storage device such as a RAM (Random Access Memory) and a ROM (Read Only Memory). The storage unit 15 may also include a secondary storage device such as an HDD (Hard Disk Drive) and an SSD (Solid State Drive), and a tertiary storage device such as an optical disk and an SD card.

[0062] [Terminal device 20] By accepting an operational input from a user, the terminal device 20 can set a light source 11 that serves as an origin among the multiple light sources 11 of the lighting device 2 so that the light emission pattern is maintained even if the attitude of the lighting device 2 changes.

[0063] Furthermore, the terminal device 20 generates control information for controlling the light emission pattern, such as on / off, brightness, light color, light emission period, and blinking, for each of the multiple light sources 11 by receiving an operation input from the user. Specifically, the terminal device 20 displays a setting screen for setting the light emission pattern of the lighting device 2 on the display unit, thereby receiving the operation input from the user, and generates control information in which the light emission pattern of the lighting device 2 based on the received operation input is set. As a result, the terminal device 20 changes the light emission pattern of the lighting device 2 by transmitting the control information to the lighting device 2.

[0064] The terminal device 20 is a device capable of controlling the lighting device 2. For example, the terminal device 20 is a mobile terminal such as a smartphone or a tablet terminal operated by a user. The terminal device 20 is not limited to a mobile terminal, and may be a stationary terminal such as a desktop personal computer. The terminal device 20 may be a terminal capable of operating devices other than the lighting device 2, or may be a terminal such as a dedicated remote control that operates only the lighting device 2.

[0065] <Processing Operation> Next, the processing operations of the lighting device 2, the lighting control method, and the program according to the present embodiment will be described.

[0066] [Example 1] In this operation example, a case where the user performs initial settings on the lighting device 2 after the lighting device 2 has been placed in a predetermined installation posture will be described with reference to FIGS.

[0067] Fig. 5 is a flowchart showing a processing operation when initially setting the lighting device 2 according to the embodiment. Fig. 6 is a diagram showing a state where the origin of the light source 11 is set in the initial setting of the lighting device 2 according to the embodiment. Fig. 7 is a diagram showing a state where the polar coordinates in the lighting device 2 are reset in the initial setting of the lighting device 2 according to the embodiment.

[0068] First, the user operates the terminal device 20 to start up the lighting device 2 in order to perform an initial setting of the lighting device 2. As shown in FIG. 5, the second detection unit 22 detects the up-down position (orientation) of the lighting device 2 (S11). That is, the second detection unit 22 detects the up-down position of the lighting device 2 arranged in a predetermined installation posture. The second detection unit 22 outputs information indicating the detected up-down position of the lighting device 2 to the control unit 12. The control unit 12 stores the acquired information indicating the up-down position of the lighting device 2 in the storage unit 15.

[0069] Next, the control unit 12 of the lighting device 2 causes the light source 11 at the initial origin to emit light (S12). The light source 11 at the initial origin is an origin that is preset in the initial state. For example, the initial origin is an origin that is determined in advance when the lighting device 2 is shipped from the factory. The initial origin may be set on a surface opposite to a predetermined surface on which a power supply connector and the like are provided. For example, when the lighting device 2 is installed so as to be suspended, the control unit 12 may automatically set the initial origin so that the light source 11 located vertically below becomes the origin.

[0070] Next, the user sets the origin of the lighting device 2 by operating the terminal device 20. The lighting device 2 of the present embodiment sets the origin, which is the direction of illumination of the lighting device 2, as the initial setting of the lighting device 2. The user then operates the terminal device 20 to set the light source 11 to be the origin among the multiple light sources 11 in the lighting device 2. For example, the user operates the terminal device 20, and the lighting device 2 receives control information from the terminal device 20 according to the user's operation. As a result, the control unit 12 switches the light source 11 to be emitted from among the multiple light sources 11 according to the received control information. As shown in FIG. 6, for example, the user operates the up-down switching button on the terminal device 20 to change the position (dot hatching) of the light source 11 that emits light along the direction indicated by the dashed arrow, and the user operates the left-right switching button to change the position of the light source 11 that emits light along the direction indicated by the dashed arrow. The switching of the light source 11 to be emitted is performed until the user sets the origin.

[0071] When the user sets the origin by operating the terminal device 20, the control unit 12 changes the origin to the one specified by the user by storing origin setting information, which is information indicating the origin set by the user, in the memory unit 15 (S13).

[0072] Next, when the control unit 12 changes the origin to the one designated by the user, it resets the polar coordinates within the lighting device 2 (S14).

[0073] Specifically, the control unit 12 assigns the positions of the multiple light sources 11 provided in the lighting device 2 to virtual polar coordinates by regarding the lighting device 2 in FIG. 7A as a polar coordinate system as shown in FIG. 7B. As shown in FIG. 7A and FIG. 7B, the initial origin is indicated by dotted hatching (latitude, longitude)=(0,0), and the origin set by the user is indicated by oblique hatching (latitude, longitude)=(40,20). An offset value of the origin set by the user relative to the initial origin is determined so that the origin set by the user (40,20) coincides with the initial origin (0,0). In this way, the control unit 12 resets the origin set by the user. As a result, the origin set by the user becomes the origin set by the initial setting.

[0074] Then, the initial setting of the lighting device 2 is completed.

[0075] This makes it possible to grasp the amount of change in the installation attitude of the lighting device 2, etc., based on the upper and lower positions of the lighting device 2 and the origin specified by the user relative to the center of the lighting device 2. Therefore, even if multiple lighting devices 2 are installed with different installation attitudes and orientations, by making the initial settings of this operation example, it is possible to standardize the light emission patterns, such as the irradiation directions, of all the multiple lighting devices 2 by making the polar coordinates of all the multiple lighting devices 2 common.

[0076] [Example 2] In this operation example, a case where the installation attitude of the lighting device 2 has changed will be described with reference to FIGS.

[0077] Fig. 8 is a flowchart showing a processing operation when the installation attitude of the lighting device 2 according to the embodiment changes. Fig. 9 is a diagram showing a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment changes.

[0078] First, as shown in Fig. 8, the first detection unit 21 detects a change in the installation posture of the lighting device 2 (S21). That is, the first detection unit 21 detects a change in the installation posture when the lighting device 2, which has been arranged in a first posture as a predetermined installation posture, changes to a second posture different from the first posture. Naturally, the lighting device 2 is in an activated state.

[0079] Next, the first detection unit 21 detects an amount of rotation corresponding to a change in the installation attitude of the lighting device 2 (S22). The first detection unit 21 outputs information indicating the detected amount of rotation of the lighting device 2 to the control unit 12. The control unit 12 stores the obtained information indicating the amount of rotation of the lighting device 2 in the storage unit 15.

[0080] Next, the control unit 12 resets the polar coordinates of the illumination device 2 based on the information indicating the amount of rotation (S23), and updates the light emission pattern to the reset one (S24).

[0081] Specifically, the control unit 12 resets the polar coordinates of the lighting device 2 by performing affine transformation on the light source 11 in the second posture (after resetting) corresponding to the light source 11 in the first posture (before resetting) based on the information indicating the amount of rotation. For example, as shown in a and b of Fig. 9, if the light source 11 (called the first light source) located at (latitude, longitude) = (40, 20) of the lighting device 2 is emitting light when the lighting device 2 is in the first posture, the control unit 12 turns off the first light source and causes the light source 11 (called the second light source) that is the same as or closest to the first light source located at (latitude, longitude) = (40, 20) in the first posture to emit light, as shown in c and d of Fig. 9. That is, the control unit 12 causes the first light source located at (latitude, longitude)=(40,20) of the lighting device 2 to emit light in the first posture, and when the lighting device 2 changes to the second posture, it turns off the first light source located at (latitude, longitude)=(40,20) of the lighting device 2 shown by the two-dot chain line, and causes the second light source located at (latitude, longitude)=(30,35) of the lighting device 2 to emit light. As a result, even if the installation posture of the lighting device 2 changes, the control unit 12 changes the light source 11 that emits light on the lighting device 2, thereby controlling the multiple light sources 11 so that the light-emitting position is substantially maintained when the lighting device 2 is observed from a fixed point. As a result, the lighting device 2 can continue to irradiate light in the same orientation (direction).

[0082] With this lighting device 2, when the lighting device 2 is observed from a fixed point, even if the installation attitude of the lighting device 2 is changed, the light emission pattern can be maintained (the light emission pattern does not change substantially).

[0083] For example, a state in which the light emission pattern is maintained even if the installation attitude of the lighting device 2 is changed in a state in which the entire lighting device 2 is illuminated will be described with reference to Fig. 10. Fig. 10 is a diagram showing a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment is changed in a state in which the entire lighting device 2 is illuminated.

[0084] In the lighting device 2 of FIG. 10a, when observed from a fixed point, the frame A1 of the dotted and dashed line emits blue light as indicated by the diagonal hatching, the frame A2 of the dotted and dashed line emits green light as indicated by the checkered hatching, and the frame A3 of the dotted and dashed line emits red light as indicated by the dotted hatching.

[0085] Even when the installation posture of the lighting device 2 in FIG. 10a is changed by rotating clockwise as shown in FIG. 10b, the lighting device 2 in FIG. 10b emits blue light as shown by the diagonal hatching in the frame A1 of the two-dot chain line, emits green light as shown by the grid-like hatching in the frame A2 of the two-dot chain line, and emits red light as shown by the dotted hatching in the frame A3 of the two-dot chain line.

[0086] In other words, when observed from a fixed point, the lighting device 2 in the installation posture shown in FIG. 10a and the lighting device 2 in the installation posture shown in FIG. 10b realize substantially the same emission pattern within frames A1, A2, and A3 in FIG. 10a and b.

[0087] <Lighting pattern> With this lighting device 2, for example, the following light emission patterns can be realized.

[0088] [Lighting pattern example 1] FIG. 11 is a diagram showing a first example of a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment is changed.

[0089] 11A and 11B show an example of a lighting device 2 mounted on a long stand that is installed on a floor and extends vertically. The lighting device 2 is provided on the stand so as to be rotatable about an axis in the vertical direction.

[0090] When the control unit 12 acquires information indicating the rotation direction of the lighting device 2 detected by the first detection unit 21, the control unit 12 controls the multiple light sources 11 to change the light emission pattern of the lighting device 2 according to the rotation direction indicated in the information.

[0091] For example, when the lighting device 2 rotates counterclockwise as shown by the arrow a in FIG. 11, it emits light at a low color temperature such as warm white or lower, and when the lighting device 2 rotates clockwise as shown by the arrow b in FIG. 11, it emits light at a high color temperature such as daylight white or higher. The lighting device 2 may emit light at a low color temperature such as warm white or lower when it rotates clockwise, and emit light at a high color temperature such as daylight white or higher when it rotates counterclockwise. In the present embodiment, daylight white is emitted at a color temperature of about 6500K, and warm white is emitted at a color temperature of about 2700K. The color temperatures exemplified in the present embodiment are merely examples, and are not limited to the numerical values, warm white, and daylight white in the present embodiment, and warm white and daylight white may be used. The control unit 12 may control the multiple light sources 11 so that the color temperature gradually increases or decreases as the rotation angle of the lighting device 2 increases.

[0092] [Lighting pattern example 2] FIG. 12 is a diagram showing a second example of a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment is changed.

[0093] 12a and 12b show an example of a lighting device 2 attached to a stand extending in a direction perpendicular to a wall surface extending along a vertical direction (horizontal direction). The lighting device 2 is provided so as to be rotatable about an axis in the horizontal direction.

[0094] Even in this case, when the control unit 12 acquires information indicating the rotation direction of the lighting device 2 detected by the first detection unit 21, the control unit 12 controls the multiple light sources 11 to change the light emission pattern of the lighting device 2 according to the rotation direction indicated in the information.

[0095] For example, in this lighting device 2, when rotated counterclockwise as seen facing the lighting device 2 as shown by the arrow a in Fig. 12, light distribution is controlled to provide a narrow angle light distribution, and when rotated clockwise as seen from the stand side as shown by the arrow b in Fig. 12, light distribution is controlled to provide a wide angle light distribution. Note that the lighting device 2 may also control light distribution to provide a narrow angle light distribution when rotated clockwise as seen facing the lighting device 2, and to provide a wide angle light distribution when rotated counterclockwise as seen facing the lighting device 2. Note that the light distribution control may be realized by a drive mechanism that changes the relative distance between the light-emitting element 11a and the light-transmitting portion 6 and a control unit 12 that controls the drive mechanism.

[0096] Note that the configurations shown in the light emission pattern example 1 may be combined to simultaneously execute the light emission pattern examples 1 and 2. For example, when the lighting device 2 is simply placed on a desk, the color temperature of the light emitted by the multiple light sources 11 may be changed by rotating the lighting device 2 clockwise or counterclockwise around the vertical axis, and the light distribution may be controlled to provide a narrow-angle light distribution or a wide-angle light distribution by rotating the lighting device 2 clockwise or counterclockwise around the horizontal axis.

[0097] [Lighting pattern example 3] FIG. 13 is a diagram showing a third example of a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment is changed.

[0098] The lighting device 2 in FIG. 13 is placed on a desk or a floor, and is provided so as to be freely rotatable. Numbers are assigned to the surfaces of the housing 5 of the lighting device 2. In addition, in the lighting device 2 of the light emission pattern example 3, the light sources 11 are arranged on all of the twenty faces. As described above, in this embodiment, since the lighting device 2 is an icosahedron, the light emission pattern is changed according to the number assigned to the face (the face perpendicular to the vertical direction) located at the top of the housing 5. The light emission patterns corresponding one-to-one to the twenty faces are stored in the storage unit 15 in advance. The control unit 12 estimates the face located at the top from the installation posture of the lighting device 2 based on the up-down direction and the set origin. The control unit 12 controls the multiple light sources 11 to emit light in the light emission pattern associated with the face located at the top.

[0099] FIG. 13a illustrates an example of an emission pattern when the surface marked with No. 2 is located at the top. In No. 2, the light sources 11 located vertically higher emit a darker red light, and the light sources 11 located vertically lower emit light that changes from red to yellow. FIG. 13b illustrates an example of an emission pattern when the surface marked with No. 16 is located at the top. In No. 16, the light sources 11 located vertically higher emit a blue light, and the light sources 11 located vertically lower emit a green light.

[0100] [Lighting pattern example 4] FIG. 14 is a diagram showing a fourth example of a light emission pattern that is reset when the installation attitude of the lighting device 2 according to the embodiment is changed.

[0101] The lighting device 2 in FIG. 14 is also placed on a desk or a floor, etc., and is provided so as to be freely rotatable.

[0102] Fig. 14A illustrates an example of light emission in the first position, and Fig. 14B illustrates an example of light emission in a randomly selected light emission pattern when the position is changed from the first position to the second position.

[0103] When the control unit 12 acquires information indicating the rotation of the lighting device 2 detected by the first detection unit 21, the control unit 12 randomly selects a light emission pattern from among the multiple light emission patterns stored in the storage unit 15 according to the rotation direction indicated by the information. The control unit 12 controls the multiple light sources 11 to emit light in the selected light emission pattern.

[0104] That is, in Light Emission Pattern Example 3, the light emission patterns are linked to the numbers that are split into pieces on the surface located at the top of the housing 5, but there is no such link in Light Emission Pattern Example 4. In Light Emission Pattern Example 4, even if the device is displaced from the first position to the second position and then returned from the second position to the first position, the light emission pattern in the first position before the displacement may differ from the light emission pattern in the first position after the displacement.

[0105] For this reason, with this lighting device 2, once the installation attitude of the lighting device 2 is changed, even if the orientation and installation attitude of the lighting device 2 are returned to the same, the lighting device 2 will not necessarily emit light in the same light emission pattern.

[0106] <Action and effect> Next, the effects of the lighting device 2, the lighting control method, and the program in the present embodiment will be described.

[0107] As described above, the lighting device 2 of this embodiment includes a plurality of light sources 11 that provide illumination in all directions, a first detection unit 21 that detects the installation attitude of the lighting device 2, and a control unit 12 that changes the emission pattern of each of the plurality of light sources 11 according to the installation attitude of the lighting device 2 detected by the first detection unit 21.

[0108] This makes it possible to change the light emission pattern of each of the multiple light sources 11 so as to follow the change in the installation posture of the lighting device 2. For example, when the lighting device 2 is observed from a fixed point, the light emission pattern can be prevented from changing even if the installation posture of the lighting device 2 is changed. In other words, with this lighting device 2, even if the installation posture of the lighting device 2 is changed, the light emission pattern can be automatically changed according to the installation posture.

[0109] In addition, in a conventional lighting device, if the attitude of the lighting device changes, the light emission pattern when the lighting device is observed from a fixed point changes, so it is necessary to reset the light emission pattern of the lighting device. However, in the present embodiment, the user is unlikely to need to reset the light emission pattern in response to a change in the attitude of the lighting device 2, so the effort required for setting is unlikely to increase.

[0110] Therefore, with this lighting device 2, it is possible to easily change the settings of the light emission pattern of the lighting device 2 that can provide illumination in all directions.

[0111] In particular, since the light emission pattern of each of the multiple light sources 11 can be changed depending on the installation posture, interactive operation can be performed by moving the lighting device 2.

[0112] Furthermore, with this lighting device 2, a user is unlikely to notice a change in the lighting pattern when observing the lighting device 2 from a fixed point, so it is possible to realize a lighting pattern that is unlikely to give the user a sense of incongruity.

[0113] In addition, the lighting control method of the present embodiment detects the installation posture of the lighting device 2, changes the light emission pattern of each of the multiple light sources 11 capable of omnidirectional illumination according to the installation posture, and controls each of the multiple light sources 11 so that the light emission pattern when the lighting device 2 emits light in a first posture and the light emission pattern when the lighting device 2 emits light in a second posture, which is an installation posture different from the first posture, maintain similar light emission patterns.

[0114] This lighting control method also provides the same effects as those described above.

[0115] Moreover, the program of the present embodiment causes a computer to execute a lighting control method.

[0116] This program also provides the same effects as those described above.

[0117] Furthermore, in the lighting device 2 of this embodiment, the control unit 12 controls each of the multiple light sources 11 to maintain an emission pattern similar to the emission pattern when the lighting device 2 emits light in a first posture and the emission pattern when the lighting device 2 emits light in a second posture, which is an installation posture different from the first posture.

[0118] According to this, when the lighting device 2 illuminates an irradiation surface with a predetermined light emission pattern, even if the installation posture of the lighting device 2 suddenly changes, the light emission pattern irradiated onto the irradiation surface can be maintained substantially the same before and after the change in the installation posture.

[0119] Furthermore, the lighting device 2 of the present embodiment includes a second detection unit 22 that detects a rotational acceleration of the lighting device 2. Then, the control unit 12 predicts an amount of change in the light emission pattern of each of the multiple light sources 11 according to the rotational acceleration detected by the second detection unit 22, and controls the light emission pattern of each of the multiple light sources 11.

[0120] For example, when a lighting device is quickly rotated, if the rotation calculation of the light emission pattern is performed after detecting the installation attitude of the lighting device, control of the light emission patterns of the multiple light sources may be delayed.

[0121] However, according to the present embodiment, the amount of rotation can be read ahead (predicted) from the rotation acceleration of the lighting device 2 and the time required to calculate the rotation acceleration. This makes it possible to control the light emission patterns of the multiple light sources 11 based on the predicted amount of rotation, thereby preventing delays in the control of the light emission patterns of the multiple light sources 11. As a result, it is possible to realize a light emission pattern that is unlikely to give a sense of discomfort to the user.

[0122] Furthermore, the lighting device 2 of the present embodiment includes a second detection unit 22 that detects the orientations of the lighting device 2, east-west, north-south and up-down. The control unit 12 then sets a preset initial value according to the orientation of the lighting device 2 detected by the second detection unit 22.

[0123] This makes it possible to determine in which direction the lighting device 2 faces when the lighting device 2 is in its initial state. Therefore, regardless of the installation posture and orientation of the lighting device 2, the initial settings of the lighting device 2 can be appropriately set.

[0124] In the lighting device 2 of the present embodiment, the second detection unit 22 is at least one of a gyro sensor and an electronic compass.

[0125] According to this, if the second detection unit 22 is at least one of a gyro sensor and an electronic compass, it is possible to accurately grasp the direction and installation attitude of the lighting device 2. Therefore, even if the installation attitude of the lighting device 2 is changed, the light emission pattern set for the lighting device 2 can be maintained.

[0126] In particular, if the second detection unit 22 is an electronic compass, the origin set in the initial setting can be kept stored even when the lighting device 2 is powered off. Even when the lighting device 2 is powered off and moved to another location, the orientation of the lighting device is stored, so there is no need to set the origin of the lighting device 2 again. This makes it difficult to increase the processing load due to the initial setting of the lighting device 2 and the effort required for the user to set it up.

[0127] Moreover, the lighting device 2 of this embodiment includes a storage unit 15 that stores the light emission patterns of the multiple light sources 11. Then, the control unit 12 executes the light emission pattern stored in the storage unit 15.

[0128] According to this, by storing the light emission pattern, it becomes possible to realize the light emission pattern that has been set once.

[0129] (Other variations) Although the lighting device, lighting control method, and program according to the present disclosure have been described based on the above-mentioned embodiments, the present disclosure is not limited to these embodiments. As long as the modifications do not deviate from the spirit of the present disclosure, modifications that a person skilled in the art may make to the embodiments may also be included in the scope of the present disclosure.

[0130] For example, each unit included in the lighting device, the lighting control method, and the program according to the above-described embodiments is typically realized as an LSI, which is an integrated circuit. These units may be individually implemented as single chips, or some or all of them may be included in a single chip.

[0131] The integrated circuit is not limited to an LSI, but may be realized by a dedicated circuit or a general-purpose processor. A field programmable gate array (FPGA) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connections and settings of the circuit cells inside the LSI may also be used.

[0132] In each of the above embodiments, each component may be implemented by dedicated hardware or by executing a software program suitable for each component. Each component may be implemented by a program execution unit such as a CPU or processor reading and executing a software program recorded on a storage medium such as a hard disk or semiconductor memory.

[0133] Furthermore, all the numbers used above are merely examples for the purpose of specifically explaining the present disclosure, and the embodiments of the present disclosure are not limited to the numbers exemplified.

[0134] In addition, the division of functional blocks in the block diagram is an example, and multiple functional blocks may be realized as one functional block, one functional block may be divided into multiple blocks, or some functions may be transferred to another functional block. Furthermore, the functions of multiple functional blocks having similar functions may be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

[0135] In addition, the order in which each step is performed in the flowchart is merely for illustrative purposes and may be other than the above. In addition, some of the steps may be performed simultaneously (in parallel) with other steps.

[0136] In addition, the present disclosure also includes forms obtained by applying various modifications to the above-described embodiments that a person skilled in the art may conceive, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present disclosure. [Explanation of symbols]

[0137] 2. Lighting equipment 11 Light source 12 Control section 15 Storage section 21 First detection unit (detection unit) 22 Second detection unit (detection unit)

Claims

1. A lighting device, comprising: A plurality of light sources that illuminate in all directions; A detection unit that detects an installation attitude of the lighting device; a control unit that changes a light emission pattern of each of the plurality of light sources in response to the installation attitude of the lighting device detected by the detection unit, The control unit controls each of the plurality of light sources so that, with respect to a light emission pattern when the lighting device emits light in a first posture and a light emission pattern when the lighting device emits light in a second posture that is an installation posture different from the first posture, when the lighting device changes from the first posture to the second posture, a light emission position of the light emission pattern when the lighting device is observed from a fixed point is maintained. Lighting equipment.

2. The control unit controls each of the plurality of light sources so that a light emission pattern when the lighting device emits light in the first posture and a light emission pattern when the lighting device emits light in the second posture, which is an installation posture different from the first posture, are maintained similar to each other.

10. The lighting device of claim 1.

3. A detection unit for detecting a rotational acceleration of the lighting device, The control unit predicts an amount of change in the light emission pattern of each of the plurality of light sources in response to the rotation acceleration detected by the detection unit, and controls the light emission pattern of each of the plurality of light sources.

3. The lighting device according to claim 1 or 2.

4. A detection unit is provided for detecting each of the azimuth directions of the lighting device, the azimuth directions being east-west, north-south, up-down, and down-up. The control unit sets a preset initial value according to the orientation of the lighting device detected by the detection unit. The lighting device according to any one of claims 1 to 3.

5. The detection unit is at least one of a gyro sensor and an electronic compass. The lighting device according to any one of claims 1 to 4.

6. a storage unit that stores the light emission patterns of the plurality of light sources; The control unit executes the light emission pattern stored in the storage unit. The lighting device according to any one of claims 1 to 5.

7. Detect the installation position of the lighting device, The light emission pattern of each of the multiple light sources capable of illuminating in all directions is changed according to the installation position, controlling each of the plurality of light sources such that a light emission pattern when the lighting device emits light in a first posture and a light emission pattern when the lighting device emits light in a second posture that is an installation posture different from the first posture are maintained similar to each other; With regard to a light emission pattern when the lighting device emits light in the first posture and a light emission pattern when the lighting device emits light in the second posture, which is an installation posture different from the first posture, when the lighting device changes from the first posture to the second posture, each of the plurality of light sources is controlled so that a light emission position of the light emission pattern when the lighting device is observed from a fixed point is maintained. Lighting control methods.

8. A method for causing a computer to execute the lighting control method according to claim 7. program.

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