JP2023175507A - Notification light source device and lighting system - Google Patents

Abstract

To provide a notification light source device capable of making signal light conspicuous so as not to disturb the lighting environment due to a lighting device for the base, and a lighting system.SOLUTION: A notification light source device 30 has a light source that emits signal light that changes color based on at least one of the internal conditions of the indoor space where the lighting device 20 is placed and external conditions of the indoor space. The notification light source device 30 satisfies -35≤color deviation≤35 in the color deviation of the signal light emitted by the light source with respect to the blackbody locus on the xy chromaticity diagram.SELECTED DRAWING: Figure 3

Description

The present disclosure relates to a notification light source device and a lighting system.

Conventionally, techniques for changing the color of light emitted by lighting according to temperature are known.

For example, Patent Document 1 discloses a network system. This network system controls the lighting equipment corresponding to a plurality of temperature sensors to emit warm color light when the temperature from each of the plurality of temperature sensors is high. and a controller for controlling the lighting fixture corresponding to the temperature sensor to emit cool color light when the temperature from each temperature sensor is low.

Patent No. 5624429

However, in conventional network systems, when a network system is used together with a base lighting device that illuminates an indoor space, the color of the light emitted by the conventional lighting device changes depending on the temperature, which changes the lighting environment by the base lighting device. It may get disrupted.

Therefore, an object of the present disclosure is to provide a notification light source device and a lighting system that can make signal light stand out without disturbing the lighting environment caused by the base lighting device.

One aspect of the notification light source device according to the present disclosure emits signal light whose color changes based on at least one of the internal conditions of an indoor space in which the lighting device is placed and the external conditions of the indoor space. The notification light source device has a light source that emits light, and the color deviation of the signal light that the light source emits with respect to the black body locus on the xy chromaticity diagram satisfies -35≦color deviation≦35.

Further, one aspect of the lighting system according to the present disclosure includes a notification light source device and a base lighting device that illuminates the indoor space, and the color deviation of the signal light emitted by the notification light source device and the The Δ color deviation, which is the difference from the color deviation of the light emitted by the lighting device, satisfies Δ color deviation≦20.

Further, one aspect of the lighting system according to the present disclosure includes a notification light source device and a base lighting device that illuminates the indoor space, and has a color temperature that is a reciprocal of the color temperature of the signal light emitted by the notification light source device. The Δmired value, which is the difference between the indicated mired value and the mired value indicated by the reciprocal of the color temperature of the light emitted by the lighting device, satisfies Δmired value≦63.

Further, one aspect of the lighting system according to the present disclosure includes a notification light source device and a base lighting device that illuminates the indoor space, and has a color temperature that is a reciprocal of the color temperature of the signal light emitted by the notification light source device. The Δmired value, which is the difference between the indicated mired value and the mired value indicated by the reciprocal of the color temperature of the light emitted by the lighting device, satisfies Δmired value≦13.

According to the present disclosure, it is possible to make the signal light stand out without disturbing the lighting environment provided by the base lighting device.

FIG. 1 is a schematic diagram showing a lighting system according to an embodiment. FIG. 2 is a block diagram showing a lighting system according to an embodiment. FIG. 3 is an xy chromaticity diagram. FIG. 4 is an xy chromaticity diagram illustrating color tones. FIG. 5 is an xy chromaticity diagram showing the range of 50 steps of the MacAdam ellipse. FIG. 6 is an xy chromaticity diagram showing the range of 25 steps of the MacAdam ellipse. FIG. 7 is a diagram showing the chromaticity range of the LED light source color according to JIS Z9112. FIG. 8 is a block diagram showing a lighting system according to another modification. FIG. 9 is a block diagram showing another lighting system according to another modification.

Embodiments of the present disclosure will be described below. Note that the embodiments described below each represent a specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components, etc. shown in the following embodiments are merely examples and do not limit the present disclosure. Therefore, components in the following embodiments that are not described in the independent claims will be described as arbitrary components.

Furthermore, each figure is a schematic diagram and is not necessarily strictly illustrated. In each figure, substantially the same components are denoted by the same reference numerals, and overlapping explanations may be omitted or simplified.

(Embodiment)
<Configuration: Lighting system 1>
First, the configuration of the lighting system 1 according to the first embodiment will be explained using FIGS. 1 to 3.

FIG. 1 is a schematic diagram showing a lighting system 1 according to an embodiment. FIG. 2 is a block diagram showing the lighting system 1 according to the embodiment. FIG. 3 is an xy chromaticity diagram.

As shown in FIG. 1, the lighting system 1 is capable of illuminating indoor spaces such as conference rooms, offices, and rest rooms. Specifically, the lighting system 1 includes a lighting device 20 and a notification light source device 30. Note that the lighting device 20 does not need to be included as a component of the lighting system 1. In this case, the lighting device 20 does not need to include the first control section 22 as a component, and the first control section 22 may or may not be included as a component of the lighting system 1. .

[Lighting device 20]
The lighting device 20 is a base lighting fixture that can illuminate an indoor space by emitting light. For example, the lighting device 20 can illuminate an indoor space by being installed on a structure such as a ceiling, a wall, or a floor. The lighting device 20 is, for example, a pendant light, a ceiling light, a stand light, or the like. FIG. 1 illustrates a case where a plurality of lighting devices 20 are installed on the ceiling.

As shown in FIGS. 1 and 2, the lighting device 20 includes a first light source 21, a first control section 22, and a first power supply section 23.

The first light source 21 emits light with which the lighting device 20 illuminates the indoor space. The first light source 21 can illuminate the indoor space by emitting white light, for example.

The first light source 21 includes a substrate and one or more light emitting elements mounted on the substrate.

The substrate is, for example, a wiring board on which a predetermined pattern of wiring is formed. As the substrate, a resin substrate, a ceramic substrate, a metal substrate coated with an insulating film, or the like can be used.

The light emitting element is an LED element composed of LEDs. The light emitting element is, for example, an individually packaged surface mount device (SMD) type LED element, which includes a container (package) made of resin or the like, and an LED chip (bare chip) placed in the container. , and a sealing member for sealing the LED chip. Specifically, the light emitting element is an SMD type white LED element that emits white light. In this case, a blue LED chip that emits blue light when energized is used as the LED chip, and a silicone resin containing a yellow phosphor such as YAG (phosphor-containing silicone resin) is used as the sealing member filled in the container. resin) is used. Further, the light emitting element may be a COB (Chip On Board) type LED module which is an LED chip (bare chip).

The first light source 21 emits light using power supplied from the first power supply section 23 . The first power supply unit 23 is configured, for example, by a circuit board on which a plurality of circuit components are mounted, receives commercial AC power, converts it into predetermined power (for example, DC power), and supplies the power to the first light source. 21. As a result, the light emitting element of the first light source 21 emits light. The first power supply unit 23 is built into the lighting device 20, but may be separate from the lighting device 20.

Further, the first light source 21 is configured to be controlled by dimming and/or toning by the first controller 22 .

The first control unit 22 has a dimming control function and a color toning control function. Therefore, the first control unit 22 can change the light emitted by the first light source 21 over time by controlling the first light source 21. Specifically, the first control unit 22 can change the light emitted by the first light source 21 over time using a dimming control function and a toning control function. Further, the first control unit 22 can turn on and off the first light source 21 by turning on/off the power supplied to the first light source 21.

The first power supply section 23 is a power source for the first light source 21 and the first control section 22, and can supply power to the first light source 21 and the first control section 22. The first power supply unit 23 is, for example, a power supply circuit in which a plurality of electronic components are mounted on a printed circuit board. Note that the lighting device 20 does not need to include the first power supply section 23, and the first power supply section 23 is not an essential component of the lighting device 20.

[Notification light source device 30]
The notification light source device 30 emits signal light whose color changes depending on at least one of the internal conditions of the indoor space and the external conditions of the indoor space, thereby alerting people present in the indoor space to the signal light. This is a lighting device that can broadcast the indicated signal. Here, the internal conditions include temperature, humidity, air quality, odor, presence or absence of people, density of people, location of a specific person, and conversation in the indoor space illuminated by the notification light source device 30 and the lighting device 20. Activity level (conversation volume), volume of human voice, specific sounds, human biological information (pulse, body temperature, brain waves such as alpha waves and beta waves), human emotions, human mental state, and power consumption including. Further, the external conditions include outdoor temperature, time, illuminance, weather, traffic conditions, and disaster information. For this reason, signals include temperature, humidity, air quality, odor, presence or absence of people, density of people, location of specific people, conversational activity, volume of human voice, and specific sounds in the indoor space. , information regarding human biological information, human emotions, human mental state, power consumption, outdoor temperature, time, illuminance, weather, traffic conditions, and disaster information.

In addition, the signal light can be notified by simply changing its color or selectively turning on two or more different colors of light so that it can be recognized by people present in the indoor space. It is light. For this reason, the notification light source device 30 may emit signal light that changes color or selectively lights up with light of two or more different colors by acquiring some input instruction. Changing the color of the signal light includes changing the color temperature and changing the wavelength of the emitted light. Specifically, the notification light source device 30 may include a plurality of independent second light sources 31 (31a, 31b, 31c) that emit red light, yellow light, and green light, respectively. That is, the notification light source device 30 may include a second light source 31a that emits red light, a second light source 31b that emits yellow light, and a second light source 31c that emits green light. In this case, the notification light source device 30 performs control to turn on the red second light source 31a, turn on the yellow second light source 31b, or turn on the green second light source 31c depending on the notification content. will be held. That is, the notification light source device 30 uses the second light source 31a that emits red light, the second light source 31b that emits yellow light, and the second light source 31b that emits green light based on at least one of internal conditions and external conditions. The second light source 31c is controlled.

The notification light source device 30 is designed so that when the lighting device 20 is turned on, the lighting device 20 does not disturb the lighting space in which the indoor space is illuminated as base lighting, and so that it can be recognized by people present in the indoor space. Emits a signal light. For example, the notification light source device 30 can notify a signal by changing the color of the signal light, or can notify a signal by turning on or off the signal light in a single color. When changing the color of the signal light, the notification light source device 30 can notify more types of signals.

Further, the luminous intensity of the signal light that the notification light source device 30 emits in the horizontal direction is set higher than the luminous intensity of the signal light that the notification light source device 30 emits in the vertical direction. In other words, the light emitted from the notification light source device 30 in the horizontal direction is brighter than the light emitted vertically downward. For example, (horizontal luminous intensity/vertical luminous intensity)>1.0. Also, (horizontal luminous intensity/vertical luminous intensity)>1.5, (horizontal luminous intensity/vertical luminous intensity)>2.0, (horizontal luminous intensity/vertical luminous intensity)>3.0, Alternatively, (horizontal luminous intensity/vertical luminous intensity) may be greater than 5.0. Thereby, the notification light source device 30 can make people efficiently recognize the signal by notifying the surroundings of the signal light. In addition, since the notification light source device 30 can suppress the light irradiated onto the vertically downward desk top surface and floor surface as much as possible, it becomes difficult to disturb the lighting environment.

The notification light source device 30 and the lighting device 20 are arranged in the same indoor space. Moreover, the notification light source device 30 can also illuminate indoor space by being installed on a structure such as a ceiling, a wall, or a floor. The notification light source device 30 is placed, for example, at a height of 1 to 4 meters from the floor surface, considering the visibility of the emitted signal light. In order to further improve visibility, the ceiling height of the notification light source device 30 is, for example, 2.7 (mm), and the diameter of the light emitting part (the spherical part in FIG. 1) of the notification light source device 30 is It is preferable that the height of the light emitting part of the notification light source device 30 is arranged to be 2.4 (m), assuming a height of 10 (cm). Furthermore, if the notification light source device 30 is placed at a height of 2.3 (m) or more from the floor surface, the notification light source device 30 will be placed in a position where it is difficult to block people's view. It is possible to achieve both visibility of the notification light source device 30 and good visibility.

The notification light source device 30 is, for example, a pendant light, a ceiling light, a stand light, or the like. FIG. 1 illustrates a case where a plurality of notification light source devices 30 are installed on the ceiling.

The notification light source device 30 includes an acquisition section 30a, a second light source 31, a second control section 32, and a second power supply section 33.

The acquisition unit 30a can acquire information indicating internal conditions from an external device such as a sensor, and can acquire information indicating external conditions from an external device. Furthermore, the acquisition unit 30a may be a sensor capable of acquiring information indicating internal conditions and information indicating external conditions. The acquisition unit 30a outputs the acquired information indicating the internal condition and information indicating the external condition to the second control unit 32. Here, the sensor (acquisition unit 30a) and external device include a temperature sensor, humidity sensor, illuminance sensor, noise sensor, microphone, odor sensor, air quality sensor, camera, biological sensor, electric energy sensor, thermal image sensor, etc. It is. The camera is a high-performance image sensor that captures images of people in an indoor space and processes the captured images to determine the presence or absence of people in the indoor space, the density of people, the location of a specific person, etc. It can sense people's emotions, etc. In addition, internal conditions and external conditions may be sensed by using a known sensor.

The second light source 31 can notify a signal to people present in the indoor space by emitting signal light that changes color. Further, the second light source 31 can also emit light with which the notification light source device 30 illuminates the indoor space. Further, the signal light may be used as base illumination. The second light source 31 is an example of a light source.

The second light source 31 includes a substrate and one or more light emitting elements mounted on the substrate.

The substrate is, for example, a wiring board on which a predetermined pattern of wiring is formed. As the substrate, a resin substrate, a ceramic substrate, a metal substrate coated with an insulating film, or the like can be used.

The light emitting element is an LED element composed of LEDs. The light emitting element is, for example, an individually packaged surface mount device (SMD) type LED element, which includes a container (package) made of resin or the like, and an LED chip (bare chip) placed in the container. , and a sealing member for sealing the LED chip. Further, the light emitting element may be a COB (Chip On Board) type LED module which is an LED chip (bare chip).

The light emitting element may be an SMD type white LED element that emits white light. In this case, a blue LED chip that emits blue light when energized is used as the LED chip, and a silicone resin containing a yellow phosphor such as YAG (phosphor-containing silicone resin) is used as the sealing member filled in the container. resin) may be used. Thereby, the second light source 31 can emit white light.

Further, the second light source 31 may include a plurality of light emitting elements that emit light colors different from each other. For example, the plurality of light emitting elements may include a blue LED that emits blue light, a green LED that emits green light, and a red LED that emits red light. Thereby, the second light source 31 can emit white light. Further, the second light source 31 can also emit red light, blue light, and green light individually or in any combination thereof.

Further, as shown in FIGS. 1 and 2, the second light source 31 emits signal light whose color changes based on at least one of the internal conditions of the indoor space and the external conditions of the indoor space. That is, the second light source 31 emits signal light that changes color under control by the second control unit 32 based on at least one of the internal conditions of the indoor space and the external conditions of the indoor space.

In order to emit signal light whose color changes, the second light source 31 is configured to be dimmed and/or toned controlled by the second control section 32 .

Specifically, the second light source 31 is controlled by the second control unit 32 to exhibit a dimming function, so that the brightness of the emitted signal light can be dimmed step by step or gradually. It can be made brighter temporarily or gradually. Further, the second light source 31 is controlled by the second control unit 32 to exhibit a color toning function, so that the color temperature can be adjusted from a low color temperature such as that of a candle flame to a high color temperature such as a clear blue sky. A signal light that changes stepwise or gradually can be emitted.

Further, as shown in FIGS. 2 and 3, the second light source 31 is controlled by the second control unit 32 so that the correlated color temperature Tc in the xy chromaticity diagram is 1800(K)<Tc<17000(K ) is emitted as a signal light. Preferably, the second light source 31 is controlled by the second control unit 32 to emit signal light such that 2400(K)<Tc<9000(K) is satisfied at the correlated color temperature Tc.

Further, the color deviation Duv of the signal light emitted by the second light source 31 with respect to the blackbody locus on the xy chromaticity diagram is −35 or more and 35 or less, as shown by the hatched grid in FIG. That is, the second light source 31 is controlled by the second control unit 32 so that the signal light satisfies -35≦color deviation Duv≦35 in terms of the color deviation of the signal light with respect to the blackbody locus on the xy chromaticity diagram. emit light. Preferably, the color deviation Duv of the signal light emitted by the second light source 31 with respect to the black body locus on the xy chromaticity diagram is −20 or more and 20 or less. That is, the second light source 31 is controlled by the second control unit 32 so that the color deviation of the signal light with respect to the black body locus on the xy chromaticity diagram satisfies -20≦color deviation Duv≦20. emit light. More preferably, the color deviation Duv of the signal light emitted by the second light source 31 with respect to the blackbody locus on the xy chromaticity diagram is −6 or more and 15 or less. That is, the second light source 31 is controlled by the second control unit 32 so that the signal light satisfies -6≦color deviation Duv≦15 in the color deviation of the signal light with respect to the black body locus on the xy chromaticity diagram. emit light.

If the color deviation falls outside of these ranges, the lighting environment in the indoor space may be disturbed. Therefore, the second light source 31 is controlled by the second control unit 32, so that the second light source 31 emits signal light so as to fall within the above-mentioned color deviation range. Furthermore, the color deviation of the signal light emitted by the second light source 31 may be defined by JIS (Japanese Industrial Standard). Further, the color of the signal light may be measured using an integrating sphere or may be measured using a spot colorimetry method.

Further, the second light source 31 emits light using electric power supplied from the second power supply section 33. The second power supply section 33 is configured, for example, by a circuit board on which a plurality of circuit components are mounted, receives commercial AC power, converts it into predetermined power (for example, DC power), and supplies the power to the second light source. 31. As a result, the light emitting element of the second light source 31 emits light. Furthermore, although the second power supply section 33 is built into the notification light source device 30, it may be separate from the notification light source device 30.

The second control unit 32 has a dimming control function and a color toning control function. Therefore, the second control unit 32 can change the light emitted by the second light source 31 over time by controlling the second light source 31. Specifically, the second control unit 32 acquires information indicating internal conditions and information indicating external conditions from the acquisition unit 30a, and adjusts the dimming control function and color toning according to these information. The light emitted by the second light source 31 can be changed over time using the control function. Further, the second control unit 32 can turn on, blink, or turn off the second light source 31 by turning on/off the power supplied to the second light source 31. Although the second control unit 32 is built in the notification light source device 30, it may be provided outside the notification light source device 30.

In addition, the 2nd control part 32 may be included in the component of the light source device 30 for notifications, and in this case, the 2nd control part 32 should just be included in the structure of the illumination system 1.

The second power supply section 33 is a power source for the second light source 31 and the second control section 32, and can supply power to the second light source 31 and the second control section 32. The second power supply unit 33 is, for example, a power supply circuit in which a plurality of electronic components are mounted on a printed circuit board. Note that the notification light source device 30 does not need to include the second power source section 33, and the second power source section 33 is not an essential component of the notification light source device 30.

[Relationship between the color of the signal light of the notification light source device 30 and the color of the light of the lighting device 20]
Here, the relationship between the color of the signal light emitted by the notification light source device 30 and the color of the light emitted by the lighting device 20 will be described.

The Δ color deviation, which is the difference between the color deviation of the signal light emitted by the notification light source device 30 and the color deviation of the light emitted by the lighting device 20, may be 20 or less. In other words, the notification light source device 30 may emit the signal light, and the lighting device 20 may emit light so that the Δ color deviation satisfies Δ color deviation≦20. The Δ color deviation 20 is calculated based on the color deviation 35 of the signal light and the color deviation 15 of the light emitted by the lighting device 20.

Further, the Δmired value, which is the difference between the mired value represented by the reciprocal of the color temperature of the signal light emitted by the notification light source device 30 and the mired value represented by the reciprocal of the color temperature of the light emitted by the lighting device 20, is 63 Below, it may be 13 or less more preferably. That is, the notification light source device 30 may emit the signal light, and the lighting device 20 may emit light so that the Δmired value satisfies the Δmired value≦63, more preferably the Δmired value≦13. Thereby, the signal light emitted by the notification light source device 30 does not disturb the lighting environment provided by the base lighting device 20, and the signal light can be made more conspicuous. Here, the mired value is defined as the reciprocal of the color temperature of the signal light emitted by the notification light source device 30 x 10 ⁶ and the reciprocal of the color temperature of the light emitted by the lighting device 20 x 10 ⁶ .

[Basis of color deviation and Δmired value]
First, the basis for setting the color deviation values will be explained using FIGS. 4 to 6 and the like. FIG. 4 is an xy chromaticity diagram illustrating color tones. FIG. 5 is an xy chromaticity diagram showing the range of 50 steps of the MacAdam ellipse. FIG. 6 is an xy chromaticity diagram showing the range of 25 steps of the MacAdam ellipse. FIG. 7 is a diagram showing the chromaticity range of the LED light source color according to JIS Z9112.

As shown in FIG. 4, according to the chromaticity diagram, the color tint is perceived as the distance from the white point of equal energy increases. For example, from sensing white, it begins to be perceived as ``○○ white'' such as ``bluish white'' or ``yellowish white'' when it is approximately 50 steps away from the equal-energy white point on the McAdam ellipse. It is up to the position. In other words, even if the area within 50 steps of the MacAdam ellipse from the white point of equal energy appears slightly colored, it can be said that the emitted light color is close to white and has a good affinity with white light.

Also, considering that the eye chromatically adapts to the light color of the base illumination, and that the visual system changes to try to perceive a white object as white, the inner side of the MacAdam ellipse for each color temperature of each base illumination is 50 steps. Similarly, it can be said that the emitted light color is close to the base illumination light color and is familiar to the base illumination light color.

Considering this, if you set a position on the chromaticity diagram that is 50 steps away from the blackbody locus on the MacAdam ellipse, even if a slight color change is detected, the inside of the 50 steps on the MacAdam ellipse will be located on the blackbody locus. I found that I could capture it without much difference from the luminous color shown above.

For example, 2000 (K), 3000 (K), 5000 (K), and 10000 (K) on the black body locus are set as typical chromaticity points, and 50 steps are defined on the MacAdam ellipse from each set point. If we consider their envelopes (thick broken lines in FIG. 5), approximately -35≦color deviation Duv≦35. The solid line indicates the 50-step range of the MacAdam ellipse defined from the 2000 (K) point on the blackbody locus, and the broken line indicates the 50-step range of the MacAdam ellipse defined from the 3000(K) point on the blackbody locus. The dashed line indicates the range of 50 steps of the MacAdam ellipse defined from the point 5000 (K) on the black body locus, and the range of 50 steps of the Mac Adam ellipse defined from the point 10000 (K) on the black body locus is indicated by the dashed line. The two-dot chain line is shown.

Furthermore, as a more preferable example, it is known that a region to be white is approximately approximated by 25 steps of a MacAdam ellipse from a white point of equal energy. In this case, for example, 2000 (K), 3000 (K), 5000 (K), and 10000 (K) on the blackbody locus are set as typical chromaticity points, and the McAdam ellipse is drawn from each set point. If 50 steps are defined and their envelopes (thick broken lines in FIG. 6) are considered, approximately -20≦color deviation Duv≦20.

As a more preferable example, as shown in FIG. 7, according to the JIS Z9112 classification of fluorescent lamps and LEDs based on light source color and color rendering, there are five types of light colors: daylight color, daylight white, white, warm white, and light bulb color. It can be seen that the color deviation Duv exists in the range of -6 to 15. From this, it was found that when -6≦color deviation Duv≦15, it is possible to make the emitted light color extremely compatible with the base illumination.

Next, the basis for setting the Δmired value will be explained.

Here, we considered the correlated color temperature conditions for emitting signal light that does not look out of place with the base illumination. Generally, 25 steps of the MacAdam ellipse from the white center point are recognized as white. From this, the color temperature when the color temperature is outside the range of 25 steps of the MacAdam ellipse from a certain reference color temperature was calculated, and the Δmired value was further determined from the calculated color temperature.

In fact, when we performed a subjective visual evaluation, we found that if the color temperature was determined as shown below, the light color of the notification light could be perceived relatively comfortably under the light color of the base lighting. Ta. For example, if you set 5000 (K) on the blackbody locus as the reference correlated color temperature and then set the range of 25 steps of the MacAdam ellipse, the upper limit will be 7500 (K) and the lower limit will be 3800 (K). Ta. The Δ mired value (mired difference) at this time was 67 when the color temperature was 7500 (K) and 5000 (K), and 63 when the color temperature was 5000 (K) and 3800 (K). That is, when the Δmired value is set to 63 or less, it is possible to obtain a light color that is relatively compatible with the base illumination and does not feel strange.

In addition, as a more suitable example, in order to consider a light color close to the base illumination, set 5000 (K) on the blackbody locus as the reference correlated color temperature, and set the range of 5 steps of the MacAdam ellipse from there. Then, the upper limit became 5350 (K) and the lower limit became 4700 (K). The Δmired value at this time was 13 when the color temperature was 5350 (K) and 5000 (K), and was 13 even when the color temperature was 5000 (K) and 4700 (K).

[Specific example of signal light emitted by notification light source device 30]
Here, changes in the signal light emitted by the notification light source device 30 will be explained using the following cases.

Further, it is assumed that the indoor space is divided into a plurality of areas, and one or more notification light source devices 30 are arranged so as to correspond to one area. The indoor space may be physically divided into a plurality of areas by walls or the like, or may be virtually divided into a plurality of areas by arbitrary settings.

First, in case 1, when at least one of the internal conditions of the indoor space and the external conditions of the indoor space is temperature, the acquisition unit 30a acquires information indicating the temperature (internal conditions). (at least one of the information indicating the indoor space and the information indicating the indoor space), the difference in temperature of each area is notified to a plurality of areas by changing the color temperature of the emitted signal light. In the case of internal conditions, the temperature corresponds to room temperature. In this case, the notification light source device 30 placed in an area with a higher room temperature emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with a lower room temperature emits a cold color signal light with a higher color temperature. Emit system signal light. Therefore, a person can recognize areas where the room temperature is high and areas where the room temperature is low. In the case of external conditions, the temperature corresponds to the outdoor air temperature. In this case, the higher the outdoor temperature, the more the notification light source device 30 emits a warm color signal light with a lower color temperature, and the lower the outdoor temperature, the more the notification light source device 30 emits a cold color signal light with a higher color temperature. emits. Therefore, people can recognize the outdoor temperature. Note that examples of selection of warm colors and cool colors corresponding to each condition are shown above. However, the selection can be made as appropriate according to the user's intention. The selection of cool colors and warm colors may be reversed from the above description, and may be similarly reversed below.

In the next case 2, when the internal condition of the indoor space is humidity, the notification light source device 30 acquires information indicating the humidity (information indicating the internal condition) so that the notification light source device 30 can Differences in humidity in each area are reported by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area with higher humidity emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with lower humidity emits a warm color signal light with a lower color temperature. Emits a highly cool-colored signal light. In this case, a person can recognize areas with high humidity and areas with low humidity.

In the next case 3, when the internal condition of the indoor space is air quality, the acquisition unit 30a acquires information indicating the air quality (information indicating the internal condition), so that the notification light source device 30 It notifies multiple areas of air quality differences by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 located in an area with poor air quality emits a warm color signal light with a lower color temperature, and the notification light source device 30 located in an area with good air quality emits a warm color signal light. Emits a signal light in a cool color with high temperature. In this case, a person can recognize areas with poor air quality and areas with good air quality.

In the next case 4, when the internal condition of the indoor space is an odor, the information light source device 30 acquires information indicating the odor (information indicating the internal condition) so that the notification light source device 30 The difference in scent in each area is reported by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area with a stronger odor emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with a weaker smell emits a warm color signal light with a lower color temperature. Emits a highly cool-colored signal light. In this case, a person can recognize areas with a strong odor and areas with a weak odor.

In the next case 5, when the internal condition of the indoor space is the number of people per unit area (density of people), the information light source device 30 acquires information indicating the number of people (density of people). By acquiring information indicating internal conditions), the difference in the density of people per unit area in each area is reported to multiple areas by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area with a high density of people per unit area emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with a lower density of people per unit area emits a warm color signal light with a lower color temperature. The notification light source device 30 that has a higher color temperature emits a colder color signal light. In this case, people can recognize the degree of congestion.

In the next case 6, when the internal conditions of the indoor space indicate the position of a specific person, the information light source device 30 obtains information indicating the position of the specific person (information indicating the internal conditions). By acquiring this information, the location of a specific person in multiple areas is notified by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area where a specific person is present may emit a warm color signal light with a low color temperature, and the notification light source device 30 placed in an area where a specific person is present may emit signal light in a warm color with a low color temperature. The disposed notification light source device 30 may emit a cold color signal light with a high color temperature. In this case, a person can recognize the presence or absence of a specific person.

In the next case 7, when the internal condition of the indoor space is the conversational activity, the acquisition unit 30a acquires information indicating the conversational activity (information indicating the internal condition). By doing this, the difference in conversational activity in each area is notified to multiple areas by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area with high conversation activity emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with low conversation activity emits a warm color signal light. The device 30 emits a cold color signal light with a higher color temperature. In this case, people can recognize areas where interaction is active and areas where interaction is inactive.

In the next case 8, when the external condition is the weather, the acquisition unit 30a acquires information indicating the weather (information indicating the external condition), so that the notification light source device 30 detects a change in the weather. Alerts are made by changing the color temperature of the emitted signal light. Specifically, if the weather is sunny, the notification light source device 30 emits daylight white light, if the weather is cloudy or rainy, the notification light source device 30 emits daylight color light, and if the weather is sunny, the notification light source device 30 emits daylight color light. It emits a cool-colored signal light with a higher color temperature than daylight white. In this case, a person can recognize the outdoor weather. Furthermore, the case is similar to case 8 even when the external condition is illuminance.

In the next case 9, when the internal condition is the human's biological information, the acquisition unit 30a acquires the human's biological information (information indicating the internal condition). Differences in biological information are reported by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 disposed in an area where the degree of concentration indicated by the human biological information is high emits a warm color signal light with a lower color temperature, and the more the concentration degree indicated by the human biological information is The notification light source device 30 disposed in a lower area emits colder color signal light with a higher color temperature. In this case, a person can recognize areas with a high concentration of people and areas with a low concentration of people. For example, areas with high concentration can be notified to those around you.

In the next case 10, when the internal condition is the atmosphere of the indoor space, the information light source device 30 is configured so that the acquisition unit 30a acquires information indicating the atmosphere of the indoor space (information indicating the internal condition). , the difference in the atmosphere of the indoor space is notified by changing the color temperature of the emitted signal light. Here, the atmosphere of the indoor space is the environment in the indoor space, including sound, temperature, humidity, air quality, biological information, and the like. Specifically, the notification light source device 30 placed in an area with a bad indoor space atmosphere emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area with a good indoor space atmosphere emits a warm color signal light. The device 30 emits a cold color signal light with a higher color temperature. In this case, a person can recognize areas with a good indoor space atmosphere and areas with a bad indoor space atmosphere. For example, it can be used to visualize productivity in indoor spaces.

In the next case 11, when the internal condition is the power consumption of the indoor space, the information light source device 30 acquires information indicating the power consumption (information indicating the internal condition) by the acquisition unit 30a. The system notifies you of differences in power consumption in indoor spaces by changing the color temperature of the signal light it emits. Specifically, the larger the amount of power consumption in the indoor space, the more the notification light source device 30 emits a warm color signal light with a lower color temperature; Emits a signal light in a cool color with high temperature. In this case, a person can recognize whether the amount of power consumption in the indoor space is high or low.

In Cases 1 to 11, the second light source 31 is controlled by the second control unit 32 so that the color deviation of the signal light with respect to the blackbody locus on the xy chromaticity diagram satisfies -6≦color deviation≦15. A signal light may be emitted to satisfy the condition. Thereby, the signal light from the notification light source device 30 blends in with the base lighting by the lighting device 20, so that the lighting environment in the indoor space can be prevented from being disturbed.

Furthermore, in cases 1 to 11, the second light source 31 may emit signal light with high saturation under the control of the second control unit 32.

In this way, in the lighting system 1, in cases 1 to 11, the signal light does not disturb the lighting environment.

In the next case 12, when the internal condition of the indoor space is the presence or absence of a person, the acquisition unit 30a of the notification light source device 30 acquires information indicating the presence or absence of a person (information indicating the internal condition). The presence or absence of a person in each area is notified to a plurality of areas by turning on or off the light. Specifically, the notification light source device 30 placed in an area where a person is present is turned on, and the notification light source device 30 placed in an area where no person is present is turned off.

In case 12, the second light source 31 may emit signal light under the control of the second control unit 32 so as to satisfy the maximum illuminance of 50 (lx) or more on the floor surface in the indoor space. Thereby, the signal light from the notification light source device 30 blends in with the base lighting by the lighting device 20, so that the lighting environment in the indoor space can be prevented from being disturbed. It is also possible to notify the presence or absence of a person.

In the next case 13, when the internal condition of the indoor space is the volume of a human voice, the information light source device 30 obtains information indicating the volume of the human voice (information indicating the internal condition). By acquiring this information, notification is made by changing the emitted signal light. Specifically, the signal light emitted by the notification light source device 30 is blinked in an area where the volume of human voice is equal to or higher than a predetermined value. In this case, by blinking the signal light, it is possible to draw the attention of people around.

In case 13, the second light source 31 is controlled by the second control unit 32 to emit a signal light that regularly repeats blinking at a maximum illuminance of 50 (lx) or more on the floor surface in the indoor space. Good too. This can be expected to attract the attention of people in the surrounding area, thereby suppressing noise generation.

In case 13, the second light source 31 is controlled by the second control unit 32 to emit a signal light that irregularly repeats blinking at a maximum illuminance of 50 (lx) or more on the floor surface in the indoor space. may be issued. This can be expected to suppress the generation of noise by causing discomfort to those who have attracted the attention of the flashing lights.

For example, in environments where people should be quiet, such as libraries and museums, it is possible to send a signal to people who are talking loudly and to people around them.

In the next case 14, when the internal condition of the indoor space is the volume of a person's voice, the information light source device 30 obtains information indicating the volume of the person's voice (information indicating the internal condition). By acquiring this information, the system notifies multiple people of the difference in volume due to the voices of different people in the area by changing the color temperature of the emitted signal light. Specifically, the notification light source device 30 placed in an area where the volume of human voice is high emits a warm color signal light with a lower color temperature, and the notification light source device 30 placed in an area where the volume of human voice is low is emitted. The light source device 30 emits colder color signal light with a higher color temperature. In this case, a person can recognize an area where the volume of the human voice is high and an area where the volume of the human voice is low.

In the next case 15, when the internal condition of the indoor space is a specific sound, the information light source device 30 acquires information indicating the specific sound (information indicating the internal condition) by the acquisition unit 30a. It notifies you by changing the signal light it emits. Specifically, the signal light emitted by the notification light source device 30 is blinked in the area where the specific sound has occurred. In this case, by blinking the signal light, it is possible to draw the attention of people around.

In case 15, the second light source 31 is controlled by the second control unit 32 to emit a signal light that regularly repeats blinking at a maximum floor illuminance of 50 (lx) or more in the indoor space. You can. This can be expected to help identify the cause of the sound by drawing the attention of people around them. For example, in a restaurant or the like, a signal light may be emitted instead of a call button for staff.

In the next case 16, when the internal condition of the indoor space is a specific sound, the acquisition unit 30a of the notification light source device 30 acquires information indicating the specific sound (information indicating the internal condition). The system notifies multiple people of the differences (types) of specific sounds in each area by changing the color temperature of the emitted signal light. Specifically, depending on the type of specific sound, a warm color signal light with a low color temperature is emitted, or a cold color signal light with a high color temperature is emitted. In this case, a person can recognize the area where a particular sound occurred.

In the next case 17, when the external condition of the indoor space is time, the information light source device 30 emits a signal when the acquisition unit 30a acquires information indicating the time (information indicating the external condition). It notifies you at a predetermined time by changing the light. Specifically, when a predetermined time has elapsed, the signal light emitted by the notification light source device 30 is made to blink. In this case, by flashing the signal light, it is possible to draw the attention of people around.

In the case of case 17, the second light source 31 is controlled by the second control unit 32 to emit a signal light that regularly repeats blinking at a maximum illuminance of 50 (lx) or more on the floor surface in the indoor space. It's okay. This can be expected to draw the attention of people around, thereby making them aware that a predetermined time has arrived.

In the next case 18, when the external condition of the indoor space is time, the acquisition unit 30a acquires information indicating the time (information indicating the external condition), so that the notification light source device 30 obtains a predetermined value by obtaining information indicating the time (information indicating the external condition). The time is notified by changing the color temperature of the emitted signal light. Specifically, when a predetermined time has elapsed, a warm color signal light with a low color temperature is emitted, and when the predetermined time has not yet been reached, a cool color signal light with a high color temperature is emitted. In this case, the person can recognize that the predetermined time has arrived.

Furthermore, in case 18, the second light source 31 may emit highly saturated signal light under the control of the second control unit 32. This makes it easier for the signal light of the notification light source device 30 to be recognized by people present in the indoor space, so by making the signal light more conspicuous and drawing the attention of people around, the predetermined time is reached. It is hoped that this will make people aware of this.

In the next case 19, when the internal condition of the indoor space is the human body temperature, the notification light source device 30 acquires information indicating the human body temperature (information indicating the internal condition) by the acquisition unit 30a. The system notifies the difference in body temperature of people in multiple areas by changing the color temperature of the emitted signal light. Specifically, when a person's body temperature is above a predetermined temperature, a signal light in a warm color with a low color temperature is emitted, and when a person's body temperature is below a predetermined temperature, a signal light in a cold color with a high color temperature is emitted. emit something. In this case, the person can recognize whether the body temperature is equal to or higher than the predetermined temperature.

In the next case 20, when the external condition of the indoor space is a traffic condition, the information light source device 30 acquires information indicating the traffic condition (information indicating the external condition) by the acquisition unit 30a, It notifies you of nearby or surrounding traffic conditions by changing the color temperature of the emitted signal light. Specifically, when the road is congested in traffic conditions, a warm color signal with a low color temperature is emitted, and when the road is not congested in traffic conditions, a signal light is emitted in a cold color with a high color temperature. emit light. In this case, a person can recognize the traffic situation.

Furthermore, when using the internal conditions of the indoor space and the external conditions of the indoor space, the notification light source device 30 emits an intermediate color of signal light that is a combination of the signal light of the internal conditions and the signal light of the external conditions. You can.

<Issues in lighting systems>
By the way, there are some ideas such as Lighting System 1 that use light to inform about the internal or external conditions of an indoor space, but the reality is that such ideas have not been put into practical use. be. When the inventors conducted field tests to put this idea into practical use with an eye toward market introduction, various problems became apparent.

One of the problems that has become apparent is that if the light (hereinafter also referred to as signal light) emitted by the notification light source device 30 for notification is too conspicuous, the lighting environment in the indoor space will be disturbed. The signal light needs to be conspicuous to some extent because it is intended for notification purposes. However, while the indoor space is designed to provide a preferable lighting environment using the lighting device 20, it is necessary to prevent the lighting environment from being disturbed by the signal light emitted by the additionally installed notification light source device 30 as much as possible. For example, if the indoor space is an office space, there is a concern that if the signal light stands out too much, it will lead to a decrease in the work efficiency of the office worker.

Such issues are new and unprecedented. These problems have not been recognized so far, and there are no known solutions to them. Lighting design is generally performed assuming a steady state, that is, a state in which the human eye visually adapts to the lighting environment, and the notification light source device 30 whose brightness or color dynamically changes. It is not common for lighting designs to be designed with this in mind.

In other words, the above-mentioned problem was discovered for the first time during the development of a completely new service that had never existed before, and the discovery of the problem itself has technical value. Furthermore, since the current problem is related to dynamic lighting, conventional lighting design techniques that assume a steady state cannot be applied to the problem-solving approach. In other words, completely new technological considerations that have not been seen before are required in terms of both problem recognition and problem resolution.

<Effect>
The effects of the notification light source device 30 and the lighting system 1 in this embodiment will be explained.

As described above, the notification light source device 30 according to the present embodiment changes color based on at least one of the internal conditions of the indoor space in which the lighting device 20 is arranged and the external conditions of the indoor space. It has a light source (second light source 31) that emits changing signal light. In the notification light source device 30, the color deviation of the signal light emitted by the light source (second light source 31) with respect to the blackbody locus on the xy chromaticity diagram satisfies (1)-35≦color deviation≦35.

For example, when a lighting device illuminates an indoor space, if the notification light source device emits a signal light that deviates from the color deviation range (1) (deviates from the blackbody locus), the lighting environment in the indoor space It may disturb the In this case, in an office or the like, there is a risk that the appearance will be poor, and that people's attention will be drawn to the signal light, resulting in a decrease in concentration and a decrease in work efficiency. In particular, when the color of the signal light changes frequently, if the deviation from range (1) is large, people will feel that the entire lighting environment is complicated. On the other hand, even if the notification light source device emits a signal light, if the light from the lighting device is not conspicuous, it will be difficult to notify the surroundings of the signal indicated by the signal light.

Therefore, in the present embodiment, the notification light source device 30 emits a signal light so as to fill the range (1), so that it blends in with the base lighting by the lighting device 20, so as not to disturb the lighting environment in the indoor space. I can do it. Further, since the signal light of the notification light source device 30 is easily recognized by people present in the indoor space, the signal light can be made more noticeable by adjusting the color of the signal light of the notification light source device 30.

Therefore, the signal light can be made to stand out without disturbing the lighting environment provided by the base lighting device 20.

Furthermore, in the notification light source device 30 according to the present embodiment, the color deviation of the signal light emitted by the light source (second light source 31) with respect to the blackbody locus on the xy chromaticity diagram is -20≦color deviation≦20. satisfy.

In this case, the signal light can be made more conspicuous without disturbing the lighting environment caused by the base lighting device 20. In particular, when the color of the signal light changes frequently, it is set to a range narrower than the color deviation range (1) described above, making it more difficult to disturb the lighting environment by the base lighting device 20.

Further, in the notification light source device 30 according to the present embodiment, in the color deviation of the signal light emitted by the light source (second light source 31) with respect to the black body locus on the xy chromaticity diagram, -5≦color deviation≦15 satisfy.

In this case, the signal light can be made more conspicuous without disturbing the lighting environment caused by the base lighting device 20. In particular, when the color of the signal light changes frequently, the range is set narrower than the color deviation range (1) described above, making it even harder to disturb the lighting environment by the base lighting device 20.

Furthermore, in the notification light source device 30 according to the present embodiment, the correlated color temperature Tc satisfies (2) 1800(K)<Tc<17000(K).

According to this, since the color temperature exists in the natural world, people can accept it without feeling uncomfortable. Therefore, even if the notification light source device 30 emits signal light in the indoor space, it is unlikely to make people feel uncomfortable.

Furthermore, in the notification light source device 30 according to the present embodiment, the correlated color temperature Tc satisfies 2400(K)<Tc<9000(K).

According to this, since the color temperature exists in the natural world, people can accept it more easily. Therefore, even if the notification light source device 30 emits signal light in the indoor space, it is less likely to make people feel uncomfortable. In particular, when the color of the signal light changes frequently, the range is set narrower than the above-mentioned correlated color temperature range (2), so that the human eye can adapt to the color change.

Further, in the notification light source device 30 according to the present embodiment, the luminous intensity of the signal light emitted by the notification light source device 30 in the horizontal direction is higher than the luminous intensity of the signal light emitted by the notification light source device 30 in the vertical direction. .

According to this, by making the luminous intensity in the horizontal direction stronger than that in the vertical direction, it is possible to efficiently notify the surroundings. Further, since the light irradiated onto the desk surface and the floor surface can be suppressed as much as possible, the lighting environment is not easily disturbed.

Furthermore, in the notification light source device 30 according to the present embodiment, the light source (second light source 31) of the notification light source device 30 notifies the signal indicated by the signal light by turning on and off in a single color.

According to this, compared to the case where the second light source 31 emits a plurality of colors of light, the notification light source device 30 can be made to have a cheaper and simpler configuration.

Further, in the notification light source device 30 according to the present embodiment, the internal conditions include temperature, humidity, air quality, odor, presence or absence of a person in the indoor space illuminated by the notification light source device 30 and the lighting device 20. , the density of people, the location of a specific person, the degree of conversation activity, the volume of a person's voice, a specific sound, a person's biological information, a person's emotion, and the amount of power consumption. The external conditions include temperature, time, illuminance, weather, traffic conditions, and disaster information in the outdoor space, which is the space outside the indoor space.

According to this, by using internal conditions and/or external conditions, the notification light source device 30 notifies various signals using signal light so as not to disturb the lighting environment by the base lighting device 20. be able to.

Further, the notification light source device 30 according to the present embodiment may include a plurality of second light sources 31. Further, the plurality of second light sources 31 include a second light source 31a that emits red light, a second light source 31b that emits yellow light, and a second light source 31c that emits green light. In the notification light source device 30, the second light source 31a that emits red light, the second light source 31b that emits yellow light, and the second light source 31b that emits green light are selected based on at least one of internal conditions and external conditions. The second light source 31c that emits light is controlled.

According to this, the notification light source device 30 can emit red light, yellow light, or green light depending on the notification content based on internal conditions and external conditions.

Furthermore, the lighting system 1 according to the present embodiment includes a notification light source device 30 and a base lighting device 20 that illuminates an indoor space. Then, Δcolor deviation, which is the difference between the color deviation of the signal light emitted by the notification light source device 30 and the color deviation of the light emitted by the lighting device 20, satisfies Δcolor deviation≦20.

In this case as well, the same effects as described above are achieved. In particular, since the light is emitted according to the relationship between the signal light of the notification light source device 30 and the light of the lighting device 20, it is possible to make the signal light more noticeable without disturbing the lighting environment caused by the base lighting device 20. .

Furthermore, the lighting system 1 according to the present embodiment includes a notification light source device 30 and a base lighting device 20 that illuminates an indoor space. Then, in the Δ mired value, which is the difference between the mired value represented by the reciprocal of the color temperature of the signal light emitted by the notification light source device 30 and the mired value represented by the reciprocal of the color temperature of the light emitted by the lighting device 20, Δ Satisfies the mired value ≦63.

In this case as well, the same effects as described above are achieved. In particular, since the light is emitted according to the relationship between the signal light of the notification light source device 30 and the light of the lighting device 20, it is possible to make the signal light more noticeable without disturbing the lighting environment caused by the base lighting device 20. .

Furthermore, the lighting system 1 according to the present embodiment includes a notification light source device 30 and a base lighting device 20 that illuminates an indoor space. Then, in the Δ mired value, which is the difference between the mired value represented by the reciprocal of the color temperature of the signal light emitted by the notification light source device 30 and the mired value represented by the reciprocal of the color temperature of the light emitted by the lighting device 20, Δ Satisfies the mired value ≦13.

In this case as well, the same effects as described above are achieved. In particular, since the light is emitted according to the relationship between the signal light of the notification light source device 30 and the light of the lighting device 20, the lighting environment caused by the base lighting device 20 is less disturbed, and the signal light can be made more conspicuous. .

(Other variations)
The notification light source device and lighting system according to the present disclosure have been described above based on the embodiments, but the present disclosure is not limited to the above embodiments.

For example, the lighting system 1a according to the embodiment described above may have a configuration as shown in FIG. 8. FIG. 8 is a block diagram showing a lighting system 1a according to another modification. As shown in FIG. 8, the lighting device 20 is independent from the control unit 5 and the lighting system 1a, and does not need to communicate with the control unit 5 and the lighting system 1a. The control unit 5 may have the same configuration as the second control unit described above.

Further, the illumination system 1b according to the above embodiment may have a configuration as shown in FIG. 9. FIG. 9 is a block diagram showing another lighting system 1b according to another modification. As shown in FIG. 9, a server device 6 is communicably connected to the control unit 5, an external information source 9 is communicably connected to the server device 6, and the server device 6 receives information obtained from the external information source 9. It may also be provided to the control unit 5.

The server device 6 also manages weather information in the area to which the indoor space belongs, disaster information in the area to which the indoor space belongs, traffic information around the area to which the indoor space belongs, current time information, etc. This is a computer device that provides this information to the control unit 5. The external information source 9 may be a sensor or may be another server device different from the server device 6. For example, if disaster information such as J alert is provided to the server device 6 by the external information source 9, the control unit 5 can cause the notification light source device 30 to emit light based on the disaster information.

Other embodiments may be obtained by making various modifications to the above embodiments that those skilled in the art can think of, or by arbitrarily combining the components and functions of the above embodiments without departing from the spirit of the present disclosure. Forms are also included in this disclosure.

1, 1a, 1b lighting system 20 lighting device 30 notification light source device 31, 31a, 31b, 31c second light source (light source)

Claims (12)

An information light source device having a light source that emits a signal light whose color changes based on at least one of the internal conditions of an indoor space in which the lighting device is arranged and the external conditions of the indoor space,
In the color deviation of the signal light emitted by the light source with respect to the blackbody locus on the xy chromaticity diagram,
-35≦color deviation≦35
A light source device for notification that satisfies the following. In the color deviation of the signal light emitted by the light source with respect to the blackbody locus on the xy chromaticity diagram,
-20≦color deviation≦20
The notification light source device according to claim 1, which satisfies the following. In the color deviation of the signal light emitted by the light source with respect to the blackbody locus on the xy chromaticity diagram,
-5≦color deviation≦15
The notification light source device according to claim 2, which satisfies the following. At the correlated color temperature Tc,
1800(K)<Tc<17000(K)
The notification light source device according to claim 1, which satisfies the following. At the correlated color temperature Tc,
2400(K)<Tc<9000(K)
The notification light source device according to claim 1, which satisfies the following. The notification light source device according to claim 1, wherein the luminous intensity of the signal light that the notification light source device emits in the horizontal direction is higher than the luminous intensity of the signal light that the notification light source device emits in the vertical direction. The notification light source device according to claim 1, wherein the light source of the notification light source device notifies the signal indicated by the signal light by turning on and off in a single color. The internal conditions include temperature, humidity, air quality, odor, presence or absence of people, density of people, location of a specific person, and the like in the indoor space illuminated by the notification light source device and the lighting device. Including voice volume, conversational activity, specific sounds, human biological information, human emotions, and power consumption,
The notification light source device according to claim 1, wherein the external conditions include outdoor temperature, time, illuminance, weather, traffic conditions, and disaster information. The notification light source device includes a plurality of the light sources,
The plurality of light sources include a light source that emits red light, a light source that emits yellow light, and a light source that emits green light,
The notification light source device includes a light source that emits the red light, a light source that emits the yellow light, and a light source that emits the green light based on at least one of the internal condition and the external condition. The notification light source device according to claim 8, wherein: The notification light source device according to any one of claims 1 to 9,
a base lighting device for illuminating the indoor space;
In the Δ color deviation, which is the difference between the color deviation of the signal light emitted by the notification light source device and the color deviation of the light emitted by the lighting device,
Δcolor deviation≦20
Meet the lighting system. The notification light source device according to any one of claims 1 to 9,
a base lighting device for illuminating the indoor space;
In the Δ mired value, which is the difference between the mired value represented by the reciprocal of the color temperature of the signal light emitted by the notification light source device and the mired value represented by the reciprocal of the color temperature of the light emitted by the lighting device,
Δmired value≦63
Meet the lighting system. The notification light source device according to any one of claims 1 to 9,
a base lighting device for illuminating the indoor space;
In the Δ mired value, which is the difference between the mired value represented by the reciprocal of the color temperature of the signal light emitted by the notification light source device and the mired value represented by the reciprocal of the color temperature of the light emitted by the lighting device,
Δmired value≦13
Meet the lighting system.

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