Lighting devices and lighting systems

Abstract

To provide a lighting device and a lighting system capable of unifying appearance of a plurality of light irradiation regions by the light radiated on an irradiation surface as a whole.SOLUTION: A lighting device 10 includes a first light source part and a second light source part (first lighting device 10a and second lighting devices 10b, 10c) capable of outputting light that is radiated to an irradiation surface R. Also, a first distance L1 which is a distance between a first light irradiation region which is a region of the irradiation surface R where the light outputted from the first light source part is radiated and the first light source part is longer than a second distance L2 which is a distance between a second light irradiation region which is a region of the irradiation surface R where the light outputted from the second light source part is radiated and the second light source part. Also, a light distribution angle of the first light source part is smaller than a light distribution angle of the second light source part. Then, the first light irradiation region and the second light irradiation region change dynamically.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a lighting device and a lighting system.

Background Art

[0002] Patent Document 1 discloses a conventional guidance presentation system. The guidance presentation system includes an entrance / exit lighting device and a display shelf lighting device that guide human behavior by means of a presentation using irradiation light.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a conventional guidance presentation system, when a plurality of lighting devices such as an entrance / exit lighting device and a display shelf lighting device are gathered and arranged side by side in one place, if each of the plurality of lighting devices irradiates light at different locations on the irradiation surface, the shape of the light irradiation area irradiated by the lighting devices at both ends will be different from the shape of the light irradiation area irradiated by the intermediate lighting device existing between the lighting devices at both ends. Also, since the distance from the lighting devices at both ends to the light irradiation area on the irradiation surface is different from the distance from the intermediate lighting device to the light irradiation area on the irradiation surface, when the brightness of the light output by each of the plurality of lighting devices is the same, the brightness of the light irradiation area by the light irradiated by the lighting devices at both ends will be darker than the brightness of the light irradiation area by the light irradiated by the intermediate lighting device. For this reason, in a conventional guidance presentation system, there are cases where a presentation by a plurality of lighting devices cannot be appropriately performed.

[0005] Therefore, an object of the present disclosure is to provide a lighting presentation system that can globally unify the appearance of a plurality of light irradiation areas formed by the light irradiated on the irradiation surface. [Means for solving the problem]

[0006] A lighting device according to one aspect of the present disclosure comprises a first light source unit and a second light source unit capable of outputting light to irradiate an irradiated surface, wherein the first distance, which is the distance between the first light irradiation region (the area of ​​the irradiated surface irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region (the area of ​​the irradiated surface irradiated by light output from the second light source unit) and the second light source unit, the beam angle of the first light source unit is smaller than the beam angle of the second light source unit, and the size and brightness of the first light irradiation region and the size and brightness of the second light irradiation region are similar. The output of the first light source and the second light source so that the output of the first light source unit is in that state. It changes dynamically.

[0007] A lighting device according to one aspect of the present disclosure comprises a first light source unit and a second light source unit capable of outputting light to irradiate an irradiated surface, wherein the first distance, which is the distance between the first light irradiation region (the area of ​​the irradiated surface irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region (the area of ​​the irradiated surface irradiated by light output from the second light source unit) and the second light source unit, the amount of light output from the first light source unit is greater than the amount of light output from the second light source unit, and the size and brightness of the first light irradiation region and the size and brightness of the second light irradiation region are similar. The output of the first light source and the second light source so that the output of the first light source unit is in that state. It changes dynamically.

[0008] A lighting device according to one aspect of the present disclosure comprises a first light source unit and a second light source unit capable of outputting light to irradiate an irradiated surface, wherein the first distance, which is the distance between the first light irradiation region (the area of ​​the irradiated surface irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region (the area of ​​the irradiated surface irradiated by light output from the second light source unit) and the second light source unit, the peak luminous intensity of the light output from the first light source unit is greater than the peak luminous intensity of the light output from the second light source unit, and the size and brightness of the first light irradiation region and the size and brightness of the second light irradiation region are similar. The output of the first light source and the second light source so that the output of the first light source unit is in that state. It changes dynamically.

[0009] Furthermore, a lighting system according to one aspect of this disclosure comprises a lighting device and a control unit that outputs a control signal for controlling the lighting device. [Effects of the Invention]

[0010] According to the lighting device and the like of this disclosure, the appearance of multiple light-illuminated areas on the illuminated surface can be unified overall. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a block diagram showing a lighting system according to an embodiment. [Figure 2] Figure 2 is a schematic diagram showing the case where each of multiple lighting devices illuminates the surface. [Figure 3A] Figure 3A shows the case where light irradiated onto the surface transitions linearly when each of multiple lighting devices irradiates the surface with light. [Figure 3B] Figure 3B shows the case where light irradiated onto an illumination surface transitions in a planar manner when each of multiple lighting devices irradiates the surface with light. [Figure 4A] Figure 4A is a diagram showing the control signal of the control unit according to the embodiment. [Figure 4B] Figure 4B shows another control signal in the control unit according to the embodiment. [Figure 5] Figure 5 is a block diagram showing a lighting system relating to other modifications. [Figure 6] Figure 6 is another block diagram showing a lighting system related to other modifications. [Figure 7] Figure 7 is another block diagram showing a lighting system related to other modifications. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components, as well as the steps and the order of the steps shown in the following embodiments are merely examples and are not intended to limit the present disclosure.

[0013] 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, the same reference numerals are given to substantially the same configurations, and overlapping explanations are omitted or simplified.

[0014] (Embodiment) <Configuration and Function: Lighting System 1> The lighting system 1 according to the following embodiment will be described.

[0015] FIG. 1 is a block diagram showing the lighting system 1 according to the embodiment.

[0016] As shown in FIG. 1, in the lighting system 1, by adjusting the lighting mode of the light emitted from the lighting device 10, a person existing in a predetermined area can be guided. For example, the lighting system 1 of the present embodiment can guide a person in a predetermined direction, gather the people guided in a predetermined direction within a predetermined area, or guide and disperse the people gathered within a predetermined area by adjusting the lighting mode.

[0017] For example, as is known as the savannah effect, it is known that a person is induced to a brighter place rather than a darker place. Therefore, in the lighting system 1, by transitioning to bright light, it is possible to act on a person's emotions and guide the person.

[0018] Such a lighting system 1 is used in places where it is necessary to guide a large number of people, such as parks, amusement parks, stations, large facilities, etc.

[0019] As shown in Figures 1 and 2, the lighting system 1 comprises a lighting support 40, a plurality of lighting devices 10, a control unit 20, and a power supply unit 30. Figure 2 is a schematic diagram showing the case where each of the plurality of lighting devices 10 irradiates the illumination surface R with light.

[0020] [Illumination support 40] The lighting support 40 includes a base 41, a support column 42, and a lighting mounting section 43.

[0021] The base 41 is installed on the ground and can support the support column 42. The support column 42 is a long rod. One end of the support column 42 is connected to the base 41, and the other end is connected to the lighting mounting section 43. The lighting mounting section 43 is connected to the support column 42. Multiple lighting devices 10 are attached to the lighting mounting section 43. Specifically, the lighting mounting section 43 can accommodate multiple lighting devices 10 arranged horizontally. The lighting mounting section 43 or the base 41 may house a control unit 20, a power supply unit 30, etc.

[0022] [Lighting device 10] Each of the multiple lighting devices 10 is, for example, an outdoor lighting device such as a streetlamp, or a facility lighting device installed inside a facility. Each of these multiple lighting devices has a housing, a light source 11, a light emission control circuit, an optical lens 12, etc. In this embodiment, the optical lenses 12a to 12c, which will be described later, are sometimes collectively referred to as the optical lens 12.

[0023] The housing is a cylindrical housing that contains the light source, light emission control circuit, optical lens 12, etc. The light source 11 is a light-emitting module on which multiple LED (Light Emitting Diode) elements are mounted. Each of the multiple LED elements includes a red LED chip, a blue LED chip, and a green LED chip. The light emission control circuit independently controls each LED chip, so that each of the multiple lighting devices 10 outputs light to the illumination surface R and irradiates the illumination surface R with light. In other words, the lighting device 10 has a dimming function and a color adjustment function. The optical lens 12 is a translucent optical element that can control the light distribution of the light output by the light source 11. The light that passes through the optical lens 12 is light-distributed and irradiated onto the illumination surface R. The light source 11 may be an example of a light source unit. Also, the lighting device 10 may be an example of a light source unit.

[0024] When the lighting device 10 receives a control signal from the control unit 20, it lights up in a lighting mode corresponding to the control signal. For example, as a dimming function, the lighting device 10 can adjust the brightness of the light emitted by the light source 11 in multiple stages, thereby making the emitted light dimmer or brighter. In other words, the lighting device 10 can periodically fluctuate the brightness of the emitted light.

[0025] Furthermore, the lighting device 10 has a color temperature adjustment function that allows it to emit white light ranging from low color temperatures such as incandescent light to high color temperatures such as warm white, neutral white, or daylight. In other words, the lighting device 10 can periodically fluctuate the hue of the emitted light. For example, in lighting effects, the lighting device 10 periodically changes the color temperature so as to repeatedly increase or decrease the redness of the emitted light.

[0026] Furthermore, the lighting device 10 may change the color of the emitted light by changing the wavelength of the emitted light as part of the lighting effect.

[0027] Furthermore, each of the multiple lighting devices 10 is arranged in a straight line on the lighting mounting section 43 of the lighting support 40, so as to be approximately parallel to the horizontal plane. Figure 2 illustrates a case where four lighting devices 10 are mounted on the lighting mounting section 43 of the lighting support 40. Note that the number of lighting devices 10 mounted on the lighting mounting section 43 may be three or fewer, or five or more. Also, each of the multiple lighting devices 10 may be mounted on the lighting mounting section 43 in a straight line, so as to be approximately parallel to the horizontal plane.

[0028] Specifically, we will explain using the first lighting device 10a, the two second lighting devices 10b and 10c, and the third lighting device 10d from the multiple lighting devices 10 shown in Figure 2 as examples. In this embodiment, four lighting devices are shown as examples of the multiple lighting devices 10, but there may be three or fewer lighting devices, or five or more lighting devices.

[0029] In a configuration of multiple lighting devices 10 arranged in a straight line, the lighting devices 10 positioned at both ends are the first lighting device 10a and the third lighting device 10d. The first lighting device 10a is positioned at one end, and the third lighting device 10d is positioned at the other end. In addition, two or more second lighting devices 10b, 10c may be positioned between the first lighting device 10a and the third lighting device 10d. In this embodiment, two second lighting devices 10b, 10c are shown as an example, but there may be one or three or more. In other words, in this embodiment, the first lighting device 10a, the second lighting devices 10b, 10c, and the third lighting device 10d can output light so that light is irradiated to three or more locations on the illumination surface R. The first lighting device 10a is an example of a first light source unit. The second lighting devices 10b, 10c are examples of second light source units. The third lighting device 10d is an example of a third light source unit.

[0030] Furthermore, each of the multiple lighting devices 10 is mounted on the lighting mounting section 43 of the lighting support 40 so that the emitted light can be directed to different locations on the illumination surface R. In this case, the first lighting device 10a, the two second lighting devices 10b and 10c, and the third lighting device 10d are each mounted on the lighting mounting section 43 so as to have different directions of light output. Alternatively, the two second lighting devices 10b and 10c may each be mounted on the lighting mounting section 43 so as to have different directions of light output, or they may be mounted on the lighting mounting section 43 so as to have the same direction of light output. Here, the direction of light output is the direction along the optical axis of the light emitted by the lighting device 10, that is, the direction of the main light.

[0031] Furthermore, the light emitted from three or more locations on the illumination surface R by multiple lighting devices forms three or more light-irradiated areas, and these three or more light-irradiated areas may be arranged in a straight line. Specifically, when the first lighting device 10a outputs light, it irradiates the first light-irradiated area on the illumination surface R with the output light. When the second lighting devices 10b and 10c output light, they irradiate two second light-irradiated areas on the illumination surface R with the output light. When the third lighting device 10d outputs light, it irradiates a third light-irradiated area on the illumination surface R with the output light. The first light-irradiated area, the two second light-irradiated areas, and the third light-irradiated area may be arranged in a straight line in this order. In this embodiment, the two second light-irradiated areas may be called the second A light-irradiated area and the second B light-irradiated area.

[0032] Furthermore, the first light irradiation area, the second light irradiation area, and the third light irradiation area are all different locations on the irradiation surface R. In Figure 2, the first illumination device 10a, the two second illumination devices 10b and 10c, and the third illumination device 10d are arranged in this order, so the first light irradiation area, the two second light irradiation areas, and the third light irradiation area are also arranged in this order. In the first light irradiation area, the two second light irradiation areas, and the third light irradiation area, two adjacent light irradiation areas may partially overlap.

[0033] Furthermore, when light emitted from each of the multiple lighting devices 10 is irradiated onto the illumination surface R, the light irradiated onto the illumination surface R may transition in a linear fashion. In other words, the light irradiation area changes dynamically between the first light irradiation area and the second light irradiation area (two adjacent light irradiation areas). In this embodiment, the light irradiation area between the first light irradiation area and the third light irradiation area changes dynamically. In this case, the lighting system 1 is designed so that the light irradiated onto the illumination surface R moves continuously in a linear fashion by having each of the multiple lighting devices 10 emit light.

[0034] Here, we will explain how the light irradiated onto the irradiation surface R transitions in a linear fashion.

[0035] Figure 3A shows the case where the light irradiated onto the illumination surface R in Figure 2 transitions linearly when each of the multiple lighting devices 10 irradiates the illumination surface R. Figure 3A illustrates the case where multiple lighting systems 1 are used. Examples of multiple lighting systems 1 include a first lighting system 1a, a second lighting system 1b, and a third lighting system 1c.

[0036] The first illumination system 1a illuminates the first light-illuminated area A1, the second A light-illuminated area A2a, the second B light-illuminated area A2b, and the third light-illuminated area A3. The second illumination system 1b illuminates the first light-illuminated area B1, the second A light-illuminated area B2a, the second B light-illuminated area B2b, and the third light-illuminated area B3. The third illumination system 1c illuminates the first light-illuminated area C1, the second A light-illuminated area C2a, the second B light-illuminated area C2b, and the third light-illuminated area C3. As described above, the first light-illuminated areas A1, B1, C1, the second A light-illuminated areas A2a, B2a, C2a, the second B light-illuminated areas A2b, B2b, C2b, and the third light-illuminated areas A3, B3, C3 are arranged in this order.

[0037] For example, in the first stage of Figure 3A, the first light-irradiated areas A1, B1, and C1 have the third brightest illuminance, which is the first illuminance.

[0038] Next, in the second stage, the first light-irradiated areas A1, B1, and C1 become the second brightest (second illuminance), while the second A light-irradiated areas A2a, B2a, and C2a become the third brightest (first illuminance).

[0039] Next, in the third stage, the first light-irradiated areas A1, B1, and C1 reach the brightest illuminance level (3rd illuminance), the second A light-irradiated areas A2a, B2a, and C2a reach the 2nd illuminance level, and the second B light-irradiated areas A2b, B2b, and C2b reach the 1st illuminance level.

[0040] Next, in the fourth stage, the first light irradiation areas A1, B1, and C1 become the second illuminance, the second A light irradiation areas A2a, B2a, and C2a become the third illuminance, the second B light irradiation areas A2b, B2b, and C2b become the second illuminance, and the third light irradiation areas A3, B3, and C3 become the first illuminance.

[0041] Next, in the fifth stage, the first light irradiation area A1, B1, and C1 will have the first illuminance, the second A light irradiation area A2a, B2a, and C2a will have the second illuminance, the second B light irradiation area A2b, B2b, and C2b will have the third illuminance, and the third light irradiation area A3, B3, and C3 will have the second illuminance.

[0042] Next, in the sixth stage, the second A light irradiation area A2a, B2a, and C2a will have the first illuminance, the second B light irradiation area A2b, B2b, and C2b will have the second illuminance, and the third light irradiation area A3, B3, and C3 will have the third illuminance.

[0043] Thus, for example, the brightest light of the third illuminance shining on the illumination surface R in Figure 2 appears to transition linearly from left to right. Furthermore, the speed at which the light transitions linearly may be similar to the speed at which a person walks (a speed of several kilometers per hour).

[0044] Furthermore, when light emitted from each of the multiple lighting devices 10 is irradiated onto the irradiation surface R, the light irradiated onto the irradiation surface R may transition in a planar manner. In other words, the first light irradiation region, the second light irradiation region, and the third light irradiation region, which is the region of the irradiation surface irradiated by light emitted from the third light source unit, may be distributed in a planar manner. In this case, each of the multiple lighting devices 10 emits light to create the effect that the light irradiated onto the irradiation surface R moves in a planar manner.

[0045] Here, we will explain how the light irradiated onto the irradiation surface R transitions in a linear fashion.

[0046] Figure 3B shows the case where the light irradiated onto the irradiation surface R transitions in a planar manner when each of the multiple lighting devices 10 irradiates the irradiation surface R with light. In Figure 3B, the lighting system 1 illuminates the first light irradiation areas A1, B1, C1, the second A light irradiation area A2a, B2a, C2a, the second B light irradiation area A2b, B2b, C2b, and the third light irradiation areas A3, B3, C3.

[0047] For example, the first light irradiation area A1, the second A light irradiation area A2a, the second B light irradiation area A2b, and the third light irradiation area A3 are arranged horizontally in this order. The same applies to the other light irradiation areas B1-B3 and C1-C3. Also, the first light irradiation areas A1, B1, and C1 are arranged vertically in this order. The same applies to the other light irradiation areas A2a, A2b, B2a, B2b, C2a, C2b, A3, B3, and C3.

[0048] For example, in the first stage of Figure 3B, the first light irradiation area A1, the second A light irradiation area A2a, the second B light irradiation area A2b, and the third light irradiation area A3 all have the third brightest illuminance (first illuminance).

[0049] Next, in the second stage, the first light-irradiated area A1, the second A light-irradiated area A2a, the second B light-irradiated area A2b, and the third light-irradiated area A3 reach the second brightest illuminance, while the first light-irradiated area B1, the second A light-irradiated area B2a, the second B light-irradiated area B2b, and the third light-irradiated area B3 reach the third brightest illuminance.

[0050] Next, in the third stage, the first light irradiation area A1, the second A light irradiation area A2a, the second B light irradiation area A2b, and the third light irradiation area A3 reach the brightest third illuminance, the first light irradiation area B1, the second A light irradiation area B2a, the second B light irradiation area B2b, and the third light irradiation area B3 reach the second illuminance, and the first light irradiation area C1, the second A light irradiation area C2a, the second B light irradiation area C2b, and the third light irradiation area C3 reach the first illuminance.

[0051] Next, in the fourth stage, the first light irradiation area A1, the second A light irradiation area A2a, the second B light irradiation area A2b, and the third light irradiation area A3 are at the second illuminance level, the first light irradiation area B1, the second A light irradiation area B2a, the second B light irradiation area B2b, and the third light irradiation area B3 are at the third illuminance level, and the first light irradiation area C1, the second A light irradiation area C2a, the second B light irradiation area C2b, and the third light irradiation area C3 are at the second illuminance level.

[0052] Next, in the fifth stage, the first light irradiation area A1, the second A light irradiation area A2a, the second B light irradiation area A2b, and the third light irradiation area A3 are at the first illuminance level, the first light irradiation area B1, the second A light irradiation area B2a, the second B light irradiation area B2b, and the third light irradiation area B3 are at the second illuminance level, and the first light irradiation area C1, the second A light irradiation area C2a, the second B light irradiation area C2b, and the third light irradiation area C3 are at the third illuminance level.

[0053] Next, in the sixth stage, the first light irradiation area B1, the second A light irradiation area B2a, the second B light irradiation area B2b, and the third light irradiation area B3 are at the first illuminance, while the first light irradiation area C1, the second A light irradiation area C2a, the second B light irradiation area C2b, and the third light irradiation area C3 are at the second illuminance.

[0054] In Figure 3B, the light irradiated onto the illumination surface R is shown as transitioning planarly from the illumination system 1 in a predetermined direction only; however, the example in Figure 3B is not limited to this. For example, the light may transition radially from the illumination system 1, or it may transition in a way that converges towards the illumination system 1. Furthermore, the light irradiated onto the illumination surface R may transition freely.

[0055] As shown in Figures 1 and 2, the first distance L1, which is the distance between the first light irradiation region (the area of ​​the irradiation surface R illuminated by light output from the first illumination device 10a) and the first illumination device 10a, is different from the second distance L2, which is the distance between the second light irradiation region (the area of ​​the irradiation surface R illuminated by light output from the second illumination devices 10b and 10c) and the second illumination device. Because the first illumination device 10a and the third illumination device 10d are located at the ends of a plurality of illumination devices 10 arranged in a straight line, the first distance L1 is longer than the second distance L2.

[0056] In this embodiment, the first illumination device 10a is used as an example of the first light source, and the two second illumination devices 10b and 10c are used as an example of the second light source. However, the third illumination device 10b may also be used as an example of the first light source. In this case as well, the third distance, which is the distance between the third light irradiation area and the third illumination device 10d, will be longer than the second distance L2.

[0057] Furthermore, when each of the multiple lighting devices 10 is normally lit in a manner that does not cause the light irradiated onto the irradiation surface R to shift, the first light irradiation area, the two second light irradiation areas, and the third light irradiation area are each set to be equivalent in size (area), brightness, and shape.

[0058] Specifically, because the first distance L1 is longer than the second distance L2, the beam angle of the first illumination device 10a is set to be smaller than the beam angles of the two second illumination devices 10b and 10c. In other words, the optical lens 12a of the first illumination device 10a and the optical lens 12c of the third illumination device 10d, each positioned at both ends, can control the beam angle of the light output from the light source 11 more effectively than the optical lenses 12b of the two second illumination devices 10b and 10c. As a result, even if the first distance L1 is longer than the second distance L2, the sizes of the first light-illuminated area and the third light-illuminated area can be set to be equivalent to the sizes of the two second light-illuminated areas.

[0059] Here, the beam angle is the angle at which the lighting device 10 emits light, and is specifically defined using the 1 / 2 beam angle. The 1 / 2 beam angle is the interior angle in the direction of irradiation of light with half the maximum luminous intensity, centered on the optical axis that has the maximum luminous intensity of the light emitted by the lighting device 10.

[0060] Furthermore, the beam angles of the optical lens 12a of the first illumination device 10a and the optical lens 12c of the third illumination device 10d may be the same or different. In other words, in the first illumination device 10a, the two second illumination devices 10b and 10c, and the third illumination device 10d, the beam angle of the light output from at least one of the illumination devices 10 located at both ends, the first illumination device 10a and the third illumination device 10d, may be smaller than the smallest beam angle among the beam angles of the light output from each of the remaining illumination devices 10 of the first illumination device 10a, the two second illumination devices 10b and 10c, and the third illumination device 10d.

[0061] Furthermore, in the first lighting device 10a, the two second lighting devices 10b and 10c, and the third lighting device 10d, the beam angle of the light output from the first lighting device 10a and the third lighting device 10d, located at both ends, is 7 degrees or more and less than 36 degrees. Also, in the first lighting device 10a, the two second lighting devices 10b and 10c, and the third lighting device 10d, the beam angle of the light output from the two second lighting devices 10b and 10c, located in the center, is 14 degrees or more and less than 53 degrees.

[0062] Furthermore, since the first distance L1 is longer than the second distance L2, the amount of light output from the first illumination device 10a and the third illumination device 10d may be set to be greater than that of the two second illumination devices 10b and 10c. For example, the optical lens 12a of the first illumination device 10a and the optical lens 12c of the third illumination device 10d may be controlled to have a narrower light distribution angle than the optical lens 12b of the two second illumination devices 10b and 10c, so that the brightness of the light in the first light-illuminated area, the two second light-illuminated areas, and the third light-illuminated area are equal. Also, the output of the light source 11 of the first illumination device 10a and the third illumination device 10d may be greater than the output of the light source 11 of the two second illumination devices 10b and 10c, so that the brightness of the light in the first light-illuminated area, the two second light-illuminated areas, and the third light-illuminated area are equal. Here, the output of the light source 11 is the central luminous intensity of the light output by the light source 11.

[0063] Furthermore, the peak luminous intensity of the light output from the first illumination device 10a and the third illumination device 10d may be greater than the peak luminous intensity of the light output from the two second illumination devices 10b and 10c. This may result in the brightness of the light in the first light-irradiated area, the two second light-irradiated areas, and the third light-irradiated area being equal.

[0064] Furthermore, since the optical lenses 12 of the first illumination device 10a, the two second illumination devices 10b and 10c, and the third illumination device 10d are all similar in shape, the light distribution can be controlled so that the shapes of the first light irradiation area, the two second light irradiation areas, and the third light irradiation area are all equivalent.

[0065] [Control Unit 20] The control unit 20 can control the multiple lighting devices 10 individually or collectively. The control unit 20 outputs a control signal that can control each of the multiple lighting devices 10, which are capable of outputting light, so that light is irradiated to two or more locations on the illumination surface R. The control signal is a dynamic output signal that periodically increases or decreases so that the output of the multiple lighting devices 10 changes. In other words, the control unit 20 controls the multiple lighting devices 10 to illuminate in a predetermined manner indicated by the control signal.

[0066] Control signals are illustrated in Figures 4A and 4B. Figure 4A shows the control signals of the control unit 20 according to the embodiment. Figure 4B shows another control signal in the control unit 20 according to the embodiment.

[0067] Specifically, as shown in Figure 4A, the control signal for one period T1 may be a dynamic output signal consisting of a waveform signal that increases only twice and a waveform signal that decreases only once. Also, as shown in Figure 4B, the control signal for one period T2 may be a dynamic output signal consisting of a waveform signal that increases only three times and a waveform signal that decreases only twice. In other words, the control signals for one period T1 and T2 are composed of signals that combine a waveform signal that increases one or more times and a waveform signal that decreases one or more times. Note that the control signals also include signals that turn the output of the light source 11 OFF or ON.

[0068] Note that the control signals shown in Figures 4A and 4B are merely examples, and the control signals are not limited to this embodiment.

[0069] Furthermore, the phases of the control signals transmitted to each of the multiple lighting devices 10 are not the same. Specifically, the control unit 20 transmits control signals with different phases to each of the multiple lighting devices 10. In other words, the control unit 20 transmits control signals as shown in Figures 3A and 3B to each of the multiple lighting devices 10 with different phases.

[0070] Furthermore, the period of each control signal output to each of the multiple lighting devices 10 may be the same. In other words, the control signal waveform shown in Figure 4A may be output to each of the multiple lighting devices 10 with different phases. The same applies to the case shown in Figure 4B.

[0071] Furthermore, the periods of the control signals output to each of the multiple lighting devices 10 may be different. In other words, the control signal with the waveform shown in Figure 4A may be output to each of the multiple lighting devices 10 at different periods. The same applies to the case shown in Figure 4B. Moreover, the control signal with the waveform shown in Figure 4A may be output to one of the multiple lighting devices 10, and the control signal with the waveform shown in Figure 4B may be output to another of the multiple lighting devices 10.

[0072] [Power supply section 30] The power supply unit 30 has the function of supplying power to the multiple lighting devices 10 and the control unit 20. The power supply unit 30 is, for example, a power supply circuit in which multiple electronic components are mounted on a printed circuit board. The power supply unit 30 generates, for example, the driving power to make each of the multiple light sources 11 emit light. Specifically, the power supply unit 30 generates the driving power to make the light sources 11 emit light and supplies this driving power to each of the light sources 11. In other words, the power supply unit 30 converts commercial AC power into DC power and supplies this DC power to each of the light sources 11 as driving power to make the light sources 11 emit light, causing the light-emitting elements of the light sources 11 in Figure 2 to emit light.

[0073] <Effects and Effects> Next, the effects and benefits of the lighting device 10 and lighting system 1 in this embodiment will be described.

[0074] As described above, the lighting device 10 of this embodiment includes a first light source unit and a second light source unit (a first lighting device 10a, a second lighting device 10b, and / or a second lighting device 10c) that can output light to irradiate the irradiation surface R. Furthermore, the first distance L1, which is the distance between the first light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance L2, which is the distance between the second light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the second light source unit) and the second light source unit. Also, the beam angle of the first light source unit is smaller than the beam angle of the second light source unit. And the first light irradiation region and the second light irradiation region change dynamically.

[0075] For example, if the first distance is longer than the second distance, even if the shape of the light-illuminated area produced by the light emitted from the first lighting device 10a and the second lighting device 10b is the same, the irradiation angles of the light irradiated onto the illumination surface R from the first lighting device 10a and the second lighting device 10b are different. As a result, the size, shape, and brightness of the first light-illuminated area may differ from those of the second light-illuminated area. In this case, the changes in the size, shape, and brightness of the light-illuminated area may prevent the desired lighting effect from being achieved.

[0076] However, according to this embodiment, when the first distance L1 is longer than the second distance L2, the beam angle of the first illumination device 10a can be made smaller than the beam angle of the second illumination device 10b. Therefore, the size and brightness of the first light-irradiated area can be made the same as the size and brightness of the second light-irradiated area. In other words, according to this embodiment, the size and brightness of multiple light-irradiated areas caused by light irradiated onto the illumination surface R can be made uniform.

[0077] Furthermore, by making the beam angle of the first illumination device 10a smaller than that of the second illumination device 10b, the first light-irradiated area is less likely to become larger, thus reducing the change in the outline of the light in the first light-irradiated area. In addition, the outline of the light-irradiated area can be changed between the first and second light-irradiated areas. In other words, according to this embodiment, the outline of the light-irradiated area can be unified overall while changing the shape of the outlines of multiple light-irradiated areas by the light irradiated onto the illumination surface R to some extent. That is, the shapes of the first to third light-irradiated areas shown in Figure 2 can be made equivalent.

[0078] Therefore, with this lighting device 10, the appearance of multiple light-illuminated areas on the illumination surface R can be unified overall.

[0079] In particular, with this lighting device 10, by providing multiple light sources, there is no need to install a drive mechanism in the light source to change the direction of the light emitted by the light source itself. Therefore, the increase in manufacturing costs of the lighting device 10 can be suppressed. In addition, there is no need to supply power to the drive mechanism. Furthermore, since there is no need to provide a drive mechanism, the frequency of maintenance of the lighting device 10 can also be suppressed. As a result, the increase in manufacturing costs of the lighting device 10 can be suppressed.

[0080] Furthermore, since the lighting device 10 does not have a drive mechanism, the shape of the multiple light-illuminated areas on the illumination surface R does not easily change. For example, the shape of the light-illuminated area on the illumination surface R does not easily change from a perfect circle to an ellipse.

[0081] Furthermore, the lighting device 10 of this embodiment includes a first light source unit and a second light source unit that can output light to irradiate the irradiation surface R. The first distance L1, which is the distance between the first light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance L2, which is the distance between the second light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the second light source unit) and the second light source unit. The amount of light output from the first light source unit is greater than that from the second light source unit. The first light irradiation region and the second light irradiation region change dynamically.

[0082] According to this, if the first distance L1 is longer than the second distance L2, the amount of light output from the first illumination device 10a can be greater than that from the second illumination device 10b. Therefore, the brightness of the first light-irradiated area can be made the same as the brightness of the second light-irradiated area. In other words, according to this embodiment, the brightness of multiple light-irradiated areas due to the light irradiated onto the illumination surface R can be made uniform.

[0083] Therefore, with this lighting device 10, the appearance of multiple light-illuminated areas on the illumination surface R can be unified overall.

[0084] Furthermore, the lighting device 10 of this embodiment includes a first light source unit and a second light source unit (a first lighting device 10a, a second lighting device 10b, and / or a second lighting device 10c) that can output light to irradiate the irradiation surface R. The first distance L1, which is the distance between the first light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the first light source unit) and the first light source unit, is longer than the second distance L2, which is the distance between the second light irradiation region (the area of ​​the irradiation surface R irradiated by light output from the second light source unit) and the second light source unit. The peak luminous intensity of the light output from the first light source unit is greater than the peak luminous intensity of the light output from the second light source unit. The first light irradiation region and the second light irradiation region change dynamically.

[0085] According to this, if the peak luminous intensity of the light output from the first illumination device 10a is greater than the peak luminous intensity of the light output from the second illumination device 10b, the amount of light output from the first illumination device 10a can be greater than that from the second illumination device 10b. Therefore, the brightness of the first light-irradiated area can be made the same as the brightness of the second light-irradiated area. In other words, according to this embodiment, the brightness of multiple light-irradiated areas due to the light irradiated onto the irradiation surface R can be made uniform.

[0086] Therefore, with this lighting device 10, the appearance of multiple light-illuminated areas on the illumination surface R can be unified overall.

[0087] Furthermore, the lighting device 10 of this embodiment further includes a third light source unit (third lighting device 10d) capable of outputting light that irradiates the irradiation surface R. The first light irradiation area, the second light irradiation area, and the third light irradiation area, which is the area of ​​the irradiation surface R irradiated by the light output from the third light source unit, are arranged in a straight line. The first light source unit, the second light source unit, and the third light source unit are also arranged in a straight line. In the first light source unit, the second light source unit, and the third light source unit, the beam angle of the light output from at least one of the first and third light source units located at both ends is smaller than the smallest beam angle among the beam angles of the light output from each of the remaining light source units of the first, second, and third light source units.

[0088] According to this, the beam angle of the light output from at least one of the first and third illumination devices 10a and 10d located at both ends can be set to the smallest beam angle. Therefore, the size and brightness of the light-illuminated area irradiated with light of the smallest beam angle, which is at least one of the first and third light-illuminated areas, can be made the same as the size and brightness of the second light-illuminated area.

[0089] Furthermore, it is possible to reduce the change in the shape of the light in the light-irradiated area where the light with the smallest beam angle is irradiated. In other words, according to this embodiment, it is possible to make the shape of the light irradiated onto the irradiation surface R uniform in multiple light-irradiated areas.

[0090] Therefore, with this lighting device 10, the appearance of multiple light-illuminated areas on the illumination surface R can be unified overall.

[0091] Furthermore, the lighting system 1 of this embodiment includes a lighting device 10 and a control unit 20 that outputs a control signal for controlling the lighting device 10.

[0092] This lighting system 1 also produces the same effects as described above.

[0093] In particular, with this lighting system 1, by providing multiple lighting devices 10, there is no need to install a drive mechanism in the light source unit to change the direction of the light emitted by the lighting devices 10 themselves. Therefore, the increase in manufacturing costs of the lighting system 1 can be suppressed. Also, since there is no drive mechanism, there is no need to supply power to the drive mechanism. Furthermore, since there is no drive mechanism, the increase in the frequency of maintenance of the lighting system 1 can also be suppressed. As a result, the increase in manufacturing costs of the lighting system 1 can be suppressed.

[0094] Furthermore, the lighting device 10 of this embodiment is further equipped with a third light source unit that can output light to be irradiated onto the irradiation surface R. The first light irradiation region, the second light irradiation region, and the third light irradiation region, which is the region of the irradiation surface R irradiated by the light output from the third light source unit, are distributed in a planar manner.

[0095] According to this, it is possible to guide people by using lighting effects that either disperse people gathered in a designated area or gather people in a designated area.

[0096] Furthermore, in the lighting device 10 of this embodiment, the beam angle of the light output from each of the light sources located at both ends of the first, second, and third light sources is 7 degrees or more and less than 36 degrees, and the beam angle of the light output from each of the light sources located in the center (second lighting devices 10b and 10c) of the first, second, and third light sources is 14 degrees or more and less than 53 degrees.

[0097] According to this, the size, shape, and brightness of the first, second, and third light-irradiated areas can be made equal. Therefore, people are less likely to feel discomfort from the light irradiated onto the irradiation surface R.

[0098] (Other variations, etc.) Although the present disclosure has been described above based on embodiments, the present disclosure is not limited to these embodiments.

[0099] For example, in the lighting device 10e and lighting system 1e of this embodiment, Figure 6 is another block diagram showing a lighting system 1e according to another modified example. As shown in Figure 6, the lighting system 1e may be provided with one lighting device 10e. Also, one lighting device 10e of the lighting system 1e may have multiple light sources 11. Therefore, the lighting system 1e is not limited to having multiple lighting devices 10e.

[0100] Furthermore, in the lighting device 10f and lighting system 1f of this embodiment, Figure 7 is another block diagram showing a lighting system 1f according to another modified example. As shown in Figure 7, the lighting system 1f may be provided with one lighting device 10f. Also, one lighting device 10f of the lighting system 1f may have multiple light sources 11, lighting devices 10f, and a power supply unit 30. Therefore, the lighting system 1f is not limited to having multiple lighting devices 10f.

[0101] Furthermore, in the lighting device 10 and lighting system 1g of this embodiment, Figure 8 is another block diagram showing a lighting system 1g according to other modifications. As shown in Figure 8, the lighting system 1g may be provided with a plurality of lighting devices 10a1, 10b1, and 10c1. Also, the plurality of lighting devices 10a1, 10b1, and 10c1 of the lighting system 1g may each have one or more light sources 11 and lighting devices 10a1, 10b1, and 10c1.

[0102] Furthermore, the control units included in the lighting device and lighting system in this embodiment are typically implemented as LSIs, which are integrated circuits. These may be individually integrated into a single chip, or some or all of them may be integrated into a single chip.

[0103] Furthermore, integrated circuit implementation is not limited to LSIs; it may also be achieved using dedicated circuits or general-purpose processors. Field-Programmable Gate Arrays (FPGAs), which can be programmed after LSI manufacturing, or reconfigurable processors, which allow for the reconfiguration of the connections and settings of circuit cells within the LSI, may also be used.

[0104] In the above embodiment, each component may be implemented by dedicated hardware or by executing a software program suitable for each component. Each component may also 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.

[0105] Furthermore, all figures used above are illustrative to illustrate the present disclosure, and the embodiments of this disclosure are not limited to the figures exemplified.

[0106] Furthermore, the division of functional blocks in the block diagram is just one example; multiple functional blocks can be implemented as a single functional block, a single functional block can be divided into multiple parts, or some functions can be moved to other functional blocks. In addition, the functions of multiple functional blocks with similar functions can be processed in parallel or time-sharing by a single piece of hardware or software.

[0107] Furthermore, the order in which each step in the flowchart is performed is illustrative for the purpose of specifically illustrating this disclosure, and may be in a different order. Also, some of the above steps may be performed simultaneously (in parallel) with other steps.

[0108] Furthermore, this disclosure also includes forms obtained by applying various modifications to the embodiments that a person skilled in the art could conceive of, and forms realized by arbitrarily combining the components and functions of the embodiments without departing from the spirit of this disclosure. [Explanation of symbols]

[0109] 1, 1e, 1f, 1g lighting system 1a First lighting system 1b Second lighting system 1c Third lighting system 10, 10a1, 10b1, 10c1, 10e, 10f Lighting device (light source section) 10a 1st lighting device (1st light source section) 10b, 10c 2nd lighting device (2nd light source section) 10d Third lighting device (third light source section) 11 Light source (light source section, first light source section, second light source section, third light source section) 20 Control Unit A1, B1, C1 1st light irradiation area A2a, B2a, C2a Second A Irradiation Field (Second Irradiation Field) A2b, B2b, C2b Second light irradiation area (Second light irradiation area) A3, B3, C3 Third Light Irradiation Area

Claims

1. It comprises a first light source unit and a second light source unit that can output light to be irradiated onto the illumination surface, The first distance, which is the distance between the first light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the first light source unit, and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the second light source unit, and the second light source unit. The beam angle of the first light source is smaller than the beam angle of the second light source. The output of the first light source and the second light source is dynamically changed so that the size and brightness of the first light-irradiated area and the size and brightness of the second light-irradiated area are similar. Lighting device.

2. It comprises a first light source unit and a second light source unit that can output light to be irradiated onto the illumination surface, The first distance, which is the distance between the first light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the first light source unit, and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the second light source unit, and the second light source unit. The amount of light output from the first light source is greater than the amount of light output from the second light source. The output of the first light source and the second light source is dynamically changed so that the size and brightness of the first light-irradiated area and the size and brightness of the second light-irradiated area are similar. Lighting device.

3. It comprises a first light source unit and a second light source unit that can output light to be irradiated onto the illumination surface, The first distance, which is the distance between the first light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the first light source unit, and the first light source unit, is longer than the second distance, which is the distance between the second light irradiation region, which is the area of ​​the irradiation surface irradiated with light output from the second light source unit, and the second light source unit. The peak luminous intensity of the light output from the first light source is greater than the peak luminous intensity of the light output from the second light source. The output of the first light source and the second light source is dynamically changed so that the size and brightness of the first light-irradiated area and the size and brightness of the second light-irradiated area are similar. Lighting device.

4. Furthermore, it includes a third light source unit that can output light irradiated onto the aforementioned irradiation surface, The first light irradiation region, the second light irradiation region, and the third light irradiation region, which is the area of ​​the irradiation surface irradiated by light output from the third light source unit, are arranged in a straight line. The first light source unit, the second light source unit, and the third light source unit are arranged in a straight line, In the first, second, and third light sources, the beam angle of light output from at least one of the first and third light sources located at both ends is smaller than the smallest beam angle among the beam angles of light output from each of the remaining light sources of the first, second, and third light sources. A lighting device according to any one of claims 1 to 3.

5. Furthermore, it includes a third light source unit that can output light irradiated onto the aforementioned irradiation surface, The first light irradiation region, the second light irradiation region, and the third light irradiation region, which is the region of the irradiation surface irradiated by light output from the third light source unit, are distributed in a planar manner. A lighting device according to any one of claims 1 to 3.

6. In the first light source unit, the second light source unit, and the third light source unit, the beam angle of the light output from each of the light sources located at both ends is 7 degrees or more and less than 36 degrees. In the first light source unit, the second light source unit, and the third light source unit, the beam angle of the light emitted from each of the light sources located in the center is 14 degrees or more and less than 53 degrees. The lighting device according to claim 4.

7. A lighting device according to any one of claims 1 to 6, The system includes a control unit that outputs a control signal for controlling the aforementioned lighting device. Lighting system.

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