JP5751901B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device having a light source such as a light emitting diode.

  2. Description of the Related Art Conventionally, an illumination device that is used for illumination in a house has been equipped with a light source such as an incandescent bulb and a fluorescent lamp. On the other hand, in recent years, with the increase in the brightness of light emitting diodes (LEDs), instead of light sources such as incandescent bulbs and fluorescent lamps, LEDs having characteristics such as low power consumption and long life have been used as light sources for lighting devices. It is becoming.

  Also, LEDs having various emission colors (for example, red, green, blue, etc.) have been developed, and the lighting environment can be changed according to the user's preference by combining (tuning) the light of the LEDs. There is also a lighting device. For example, there is a bathroom lighting device that includes a red light emitter, a green light emitter, and a blue light emitter, and by changing the light color in order, can perform underwater illumination with an unprecedented fantastic color to obtain a relaxing feeling. It is disclosed (see Patent Document 1).

JP 2008-53184 A

  However, since the lighting device of Patent Document 1 changes the color of hot water in the bathtub, when applied to a normal lighting device installed on a ceiling or a wall, the user feels uncomfortable. Therefore, it cannot be used as general indoor general lighting.

  On the other hand, it is required to elucidate the influence (good and bad influences) of lighting in a room such as a home or office on the human body in the environment of the lighting. In particular, what kind of lighting environment should be provided to many people who have various stresses is a serious concern. The applicant has found that by applying diligent efforts, the stress applied to a person can be reduced by combining and combining light sources of a plurality of colors.

  This invention is made | formed in view of such a situation, and it aims at providing the illuminating device which can reduce stress.

The illuminating device according to the present invention includes a white-type first light source, a light bulb-colored second light source, and a red third light source in a lighting device including a plurality of light sources. It is configured to achieve a pink lighting environment by toning.

  In the present invention, a white first light source, a light bulb color second light source, and a red third light source are provided, and light from each light source is toned. By providing the red light source, the light from the lighting device can be adjusted to a so-called pink color. As a method for measuring human stress, for example, salivary amylase measurement can be used. Stress is given to a subject who feels stress with a white light source turned on without turning on a red light source, thereby giving a lighting environment in which the red light source is turned on and toned in pink. Reduced to a stress-free state. And when it returned to the original lighting environment (white system) in the state which stress reduced, it came to feel stress again. Thus, stress can be reduced by adding a red light source and performing pink toning.

The illuminating device according to the present invention includes a white-type first light source, a light bulb-colored second light source, and a red third light source in a lighting device including a plurality of light sources. Yes constitute to toning, tone There color light chromaticity coordinate x is from 0.343 in the range of 0.531, the chromaticity coordinate y is in the range of 0.377 from 0.349 It is characterized by that.

  In the present invention, the chromaticity coordinate x of the toned light is in the range of 0.343 to 0.531, and the chromaticity coordinate y is in the range of 0.349 to 0.377. When the chromaticity coordinates of the toned light are within the above-described range, a pink illumination environment can be realized without giving a sense of incongruity to the subject by the function of human chromatic adaptation.

  In the lighting device according to the present invention, the chromaticity coordinate x of the toned light is in the range of 0.343 to 0.449, and the chromaticity coordinate y is in the range of 0.349 to 0.365. It is characterized by.

  In the present invention, the chromaticity coordinate x of the toned light is in the range of 0.343 to 0.449, and the chromaticity coordinate y is in the range of 0.349 to 0.365. When the chromaticity coordinates of the toned light are within the above-described range, for example, a user who uses either a daylight color or a light bulb color light source in a normal lighting environment is allowed without any sense of incongruity. Can provide a pink lighting environment.

  In the lighting device according to the present invention, the chromaticity coordinate x of the toned light is in the range of 0.343 to 0.405, and the chromaticity coordinate y is in the range of 0.349 to 0.358. It is characterized by.

  In the present invention, the chromaticity coordinate x of the toned light is in the range of 0.343 to 0.405, and the chromaticity coordinate y is in the range of 0.349 to 0.358. To provide a pink lighting environment in which many subjects feel acceptable when the chromaticity coordinates of the toned light are within the above-mentioned range and can feel a good lighting environment. Can do.

  In the illumination device according to the present invention, the first light source is a white LED having a dominant wavelength of 460 to 470 nm, the second light source is a light bulb color LED having a dominant wavelength of 550 to 570 nm, and the third light source. The light source is a red LED having a dominant wavelength of 620 to 640 nm.

  In the present invention, the first light source is a white LED having a dominant wavelength of blue light of 460 to 470 nm, and the second light source is a light bulb color LED having a dominant wavelength of yellow light of 550 to 570 nm, The third light source is a red LED having a dominant wavelength of 620 to 640 nm. By adjusting the current supplied to each LED, a pink illumination environment in which the chromaticity coordinates are adjusted to a desired range can be realized.

  According to the present invention, stress can be reduced.

It is an external view which shows an example of a structure of the illuminating device of this Embodiment. It is a disassembled perspective view which shows an example of a structure of the illuminating device of this Embodiment. It is a top view which shows the example of arrangement | positioning of the principal part of the illuminating device of this Embodiment. It is a top view which shows an example of a structure of the LED module of this Embodiment. It is a schematic diagram which shows an example of the circuit structure of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of the toning state of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of the chromaticity diagram of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of wavelength distribution in the toning state of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of wavelength distribution in the toning state of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of wavelength distribution in the toning state of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of wavelength distribution in the toning state of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of the subjective evaluation result by toning of the illuminating device of this Embodiment. It is explanatory drawing which shows an example of the objective evaluation result by toning of the illuminating device of this Embodiment.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is an external view showing an example of the configuration of the illumination device 100 according to the present embodiment, and FIG. 2 is an exploded perspective view showing an example of the configuration of the illumination device 100 according to the present embodiment. In the following description, a ceiling light that can be detachably attached to a mounting surface such as a ceiling is given as an example of the lighting device 100, but the lighting device 100 of the present embodiment is not limited to a ceiling light. .

  As shown in FIG. 1, the lighting device 100 is made of metal (for example, aluminum) and a disk-shaped chassis 1 is attached to a ceiling or the like. The chassis 1 is disk-shaped and has light diffusibility. A ring cover 8 is attached. A disc-shaped center cover 9 is detachably attached to the center of the ring cover 8.

  As shown in FIG. 2, an adapter (not shown) is attached to the attachment hole at the center of the chassis 1. The adapter has a flat columnar shape, and has a hooking blade that engages with an engagement hole of an attached body such as a hooking sealing body provided on the ceiling, and a power line connector. The adapter is electrically and mechanically connected to the mounted body by engaging the hooking blade with the engaging hole of the mounted body. By attaching the chassis 1 to the adapter, the chassis 1 is attached to the ceiling at the same time as the adapter is attached to the attached body.

  The chassis 1 is provided with a power supply board support part 63. The power supply board support part 63 is provided with a power supply part 6 in which circuit components for converting an AC voltage into a required DC voltage are mounted on the power supply board. An insulating sheet 64 is provided between the power supply unit 6 and the chassis 1.

  The chassis 1 is provided with a control board support portion 73. The control board support part 73 is provided with a control board 7 on which a control microcomputer for controlling the operation of the entire lighting device 100 is mounted. The control board 7 is provided with a receiving unit 75 for receiving a signal from a remote controller (remote operation terminal device).

  In addition, a rectangular light source holding portion 3 is erected on the chassis 1 so as to surround a mounting hole so as to form a regular octagonal peripheral wall. Each light source holding unit 3 is attached with an LED module 2 as a series light source group in which a plurality of LEDs (light emitting diodes) as light sources are connected in series toward the outer edge of the chassis 1. In the example of FIG. 2, eight LED modules 2 are provided, but the number of LED modules 2 is not limited to the example of FIG. Details of the LED module 2 will be described later.

  The power supply unit 6 is electrically connected to the LED module 2 via electric wires 66 and 67. The LED modules are electrically connected by an electric wire 69. Thereby, each LED module 2 is connected in parallel. Further, the power supply unit 6 is electrically connected to the control board 7 via the electric wire 68.

  A top plate reflection sheet 5 that reflects light from each LED module 2 is provided at the edge of the light source holding unit 3. The top plate reflection sheet 5 is made of a disk-shaped resin having an octagonal hole in the center portion that matches the arrangement shape of the LED module 2, and is subjected to surface processing so that it is easily diffusely reflected.

  The space formed by the chassis 1 and the light source holding unit 3 accommodates the power supply unit 6 and the control board 7, and the space is covered by the board cover 60. The substrate cover 60 is placed on the power supply substrate support unit 63 and the control substrate support unit 73 and is fixed to the light source holding unit 3 with screws or the like.

  The chassis 1 is provided with a disk-shaped reflection sheet 4 that reflects light from each LED module 2. The reflection sheet 4 includes a disc portion 41 having an octagonal hole in the center portion that matches the arrangement shape of the LED module 2, and a peripheral wall portion 42 erected on the outer peripheral edge of the disc portion 41. The disc part 41 is curved so that one surface is gradually concave from the center part toward the outer edge part. The reflection sheet 4 is made of a resin and is subjected to surface processing so that it is easily diffusely reflected. The reflection sheet 4 is attached to the chassis 1 so that the other convex surface faces the chassis 1. The peripheral wall portion 42 of the reflection sheet 4 faces the LED modules 2 while being separated from each other, and the inner peripheral surface of the peripheral wall portion 42 is a reflective surface that is spaced apart and faces the light emitting direction of the LED modules 2.

  The chassis 1 to which the LED module 2, the power supply unit 6, the control board 7, the board cover 60 and the like are attached is provided with a light diffusing ring cover 8 that covers the LED module 2 and the reflection sheet 4. The ring cover 8 includes a disc-shaped annular portion 81 having a circular hole in the center, and a peripheral wall portion 82 erected on the outer peripheral edge of the annular portion 81. The ring cover 8 is attached to the peripheral wall portion of the chassis 1 by the peripheral wall portion 82. Each LED module 2 is accommodated in a cavity formed by the ring cover 8, the light source holding part 3, and the chassis 1, and only the LED module 2 part can be sealed.

  A center cover 9 as a disk-shaped power supply cover is detachably attached to the inner peripheral edge of the annular portion 81 of the ring cover 8. The center cover 9 is provided with a plurality of holes 90 and accommodates a light receiving unit that receives a signal from the remote controller, a display LED (not shown) for displaying the lighting state (operating state) of the lighting device 100, and the like. can do.

  FIG. 3 is a plan view illustrating an arrangement example of a main part of the illumination device 100 according to the present embodiment. As shown in FIG. 3, each LED module 2 held by the light source holding unit 3 is arranged in a regular octagonal shape toward the outer edge of the chassis 1. When the LED module 2 is turned on, the light from the LED module 2 is emitted radially from the center of the chassis 1 toward the outer edge.

  A part of the light emitted from the LED module 2 is specularly reflected on one surface of the disk portion 41 of the reflection sheet 4. The other part of the light emitted from the LED module 2 is incident on the inner peripheral surface of the peripheral wall portion 42 of the reflecting sheet 4 that is separated and opposed in the light emitting direction of the LED module 2 at a substantially right angle. The surface is irregularly reflected, that is, reflected in multiple directions. A part of the light irregularly reflected on the inner peripheral surface of the peripheral wall portion 42 of the reflection sheet 4 is incident on one surface of the disk portion 41 of the reflection sheet 4 and further reflected on the one surface, and the other portion is reflected on the reflection sheet 4. The light enters the inner surface of the ring cover 8 without being incident, and is emitted from the outer surface of the ring cover 8 to the outside of the illumination device 100 while diffusing inside the ring cover 8.

  As described above, since the light emission direction of each LED module 2 is the direction from the center portion of the chassis 1 to the outer edge portion, and the irradiation direction of the lighting device 100 is a direction intersecting with the light emission direction of the LED module 2, Of the light emitted from the LED module 2, the light that directly enters the ring cover 8 and exits the illumination device 100 can be reduced, and the direct light from the LED module 2 enters the user's eyes. The glare can be reduced.

  FIG. 4 is a plan view showing an example of the configuration of the LED module 2 of the present embodiment. As shown in FIG. 4, the LED module 2 includes a rectangular plate-shaped LED substrate 20 and 16 LEDs arranged in a line along the longitudinal direction of the LED substrate 20. The breakdown of the 16 LEDs is nine daylight color LEDs 21 as the first white light source, four light bulb color LEDs 22 as the second light source, and three red LEDs 23 as the third light source. Nine daylight LEDs 21 are connected in series, and four bulb-color LEDs 22 and three red LEDs 23 are connected in series. The LED substrate 20 is made of metal such as iron or aluminum, and also serves as a heat conductor that conducts heat from each LED to the light source holding unit 3.

  For example, the daylight color LED 21 is an LED having a dominant wavelength of blue light of 460 to 470 nm, the light bulb color LED 22 is an LED having a dominant wavelength of yellow light of 550 to 570 nm, and the red LED 23 is an LED having a dominant wavelength of 620 to 640 nm. LED.

  In addition, the number of each LED, a dominant wavelength, and arrangement | positioning on the LED board | substrate 20 are not limited to the above-mentioned example.

  FIG. 5 is a schematic diagram illustrating an example of a circuit configuration of the lighting apparatus 100 according to the present embodiment. As shown in FIG. 5, the lighting device 100 includes one light source group in which nine daylight color LEDs 21 are connected in series and one light source group in which four light bulb color LEDs 22 and three red LEDs 23 are connected in series. Eight LED modules 2 arranged on one LED substrate are connected in parallel.

  A current source D1 is connected to the anode of the daylight color LED 21 at the positive end of the LED group to which the daylight color LED 21 is connected via a resistor 601, and an FET 603 is connected to the cathode of the daylight color LED 21 at the negative end. Yes, the gate of the FET 603 is connected to the microcomputer 700. The FET 603 is PWM-controlled by a signal from the microcomputer 700, and changes the duty ratio during the on / off period. Thereby, the electric current value which flows into daylight color LED21 can be adjusted.

  A current source D1 is connected to the anode of the light bulb color LED 22 at the positive side end of the LED group to which the light bulb color LED 22 and the red LED 23 are connected, and the cathode of the light bulb color LED 22 at the negative side end is connected to the anode. , FET 604 is connected, and the gate of FET 604 is connected to microcomputer 700. The FET 604 is PWM-controlled by a signal from the microcomputer 700, and changes the duty ratio during the on / off period. Thereby, the electric current value which flows into light bulb color LED22 and red LED23 can be adjusted independently of daylight color LED21.

  FIG. 6 is an explanatory diagram illustrating an example of a toning state of the lighting apparatus 100 according to the present embodiment. By changing the duty ratio of the pulse waveform output from the microcomputer 700 to the gates of the FETs 603 and 604, the current flowing in the daylight color LED 21 and the current flowing in the light bulb color LED 22 and the red LED 23 are independently adjusted, thereby adjusting the daylight color LED 21. The light from the light bulb color LED 22 and the red LED 23 can be toned.

  As shown in FIG. Toning No. 1 Toning can be performed in 10 steps up to 10. Toning No. 1 shows toning in a state in which the daylight color LED 21 is turned on without causing any current to flow while the daylight color LED 21 is turned on (100% lighting) by passing a predetermined rated current through the daylight color LED 21. .

  Toning No. 1, the current flowing through the daylight color LED 21 is reduced by a predetermined amount, the light bulb color LED 22 and the red LED 23 are turned on, and a predetermined amount of current is passed to adjust the color matching No. 1. 2 state. Furthermore, toning no. 2, the current flowing through the daylight color LED 21 is decreased by a predetermined amount, and the currents flowing through the light bulb color LED 22 and the red LED 23 are increased by a predetermined amount. 3 state. Similarly, the current flowing in the daylight color LED 21 is sequentially decreased, and the current flowing in the light bulb color LED 22 and the red LED 23 is increased by a predetermined amount, thereby adjusting the color matching No. 2. It can be in the state of 4-9.

  Toning No. 10 is a state in which the daylight color LED 21 is turned off without passing a current, and a predetermined rated current is passed through the light bulb color LED 22 and the red LED 23 so that the light bulb color LED 22 and the red LED 23 are all turned on (100% on). ) Shows the toning of the state.

  Each toning No. The chromaticity coordinates (x, y), color temperature, deviation from the black body locus (Δuv), average color rendering index Ra, and special color rendering index R9 for red are as shown in FIG.

  The lighting device 100 includes a voltage fluctuation detection circuit (not shown) that detects fluctuations in an input voltage (for example, AC100V, AC200V, etc.), and the input voltage is cut off within a predetermined time (for example, 5 seconds, 1 second, etc.). Whenever the input voltage is cut off, the toning state of the lighting device 100 can be changed. For example, the toning state to be transitioned is set to the toning number. 1. Toning No. 10 and a toning number preset by the user according to preference. These three toning states can be changed in order by quickly turning on and off a wall switch provided on a wall or the like. In addition, the 10-level toning state shown in FIG. 6 can be set by the user from a remote operation terminal such as a remote control.

  FIG. 7 is an explanatory diagram illustrating an example of a chromaticity diagram of the lighting apparatus 100 according to the present embodiment. As shown in FIG. The states 1 to 10 can be represented by reference numerals 1 to 10 on the chromaticity diagram.

  8 to 11 are explanatory diagrams illustrating an example of the wavelength distribution in the toning state of the lighting apparatus 100 according to the present embodiment. FIG. 2 shows the wavelength distribution (emission spectrum) of the toned light at 2; As described above, the toning no. 1, since only the daylight color LED 21 is lit, 1 is a wavelength distribution similar to that of a general white LED (so-called blue, yellow, and red three-wavelength type).

  Toning No. 2, the light emission intensity of the daylight color LED 21 is slightly weakened, and the four light bulb color LEDs 22 and the three red LEDs 23 are turned on, so that the light emission intensity of the light bulb color LED 22 and the red LED 23 is slightly increased. As a result, as shown in FIG. 8, the peak value of the blue wavelength is slightly decreased, and the peak values of the yellow wavelength and the red wavelength are slightly increased.

  Toning No. 6, the emission intensity of the daylight color LED 21 is further decreased, and the emission intensity of the light bulb color LED 22 and the red LED 23 is further increased. As a result, as shown in FIG. 9, the peak value of the blue wavelength is further reduced and the peak value of the yellow wavelength is slightly reduced, while the peak value of the red wavelength is further increased. The reason why the peak value of the yellow wavelength is slightly smaller is that the peak of the yellow wavelength of the daylight color LED 21 is decreased as the emission intensity of the daylight color LED 21 is decreased.

  Toning No. 8, the emission intensity of the daylight color LED 21 is further decreased, and the emission intensity of the light bulb color LED 22 and the red LED 23 is further increased. As a result, as shown in FIG. 10, the peak value of the blue wavelength is further reduced, the peak value of the yellow wavelength is reduced, and the peak value of the red wavelength is further increased. The reason why the peak value of the yellow wavelength is small is that the peak of the yellow wavelength of the daylight color LED 21 accompanying the decrease in the emission intensity of the daylight color LED 21 is small.

  Toning No. 10, all nine daylight color LEDs 21 are turned off, and only four light bulb color LEDs 22 and three red LEDs 23 are lit. Therefore, the blue wavelength peak value is further reduced and the red wavelength peak value is further increased. Become.

  Next, an experiment result of stress reduction by toning of the lighting device 100 of the present embodiment will be described. First, POMS (Profile of Mood States) evaluation was performed as an example of subjective evaluation for evaluating the mood of the subject from the lighting environment. POMS evaluation is one of the questionnaire methods for evaluating mood, and can measure a general mood or emotional state that changes depending on the condition of the subject. As a measure of mood, six factors can be measured simultaneously: tension, depression, anger, vitality, fatigue, and confusion.

  FIG. 12 is an explanatory diagram illustrating an example of a subjective evaluation result by color matching of the lighting apparatus 100 according to the present embodiment. The toning number of FIG. Is the toning number of FIG. It corresponds to. As shown in FIG. At 10, the sense of incongruity disappears once the eyes get used. That is, toning No. 2 from another room. When entering a room under illumination in the state of 10 or when the toning No. When lighting is turned on in the state of 10, the user may feel uncomfortable at first, but the discomfort gradually disappears. Therefore, if there is no sense of incongruity, there is a possibility of an illumination environment that reduces stress.

  In addition, as shown in FIG. The range of 1-7 is said to be acceptable lighting. In addition, the subject who usually spends time under illumination with a daylight color light source is the toning number. The range of 1-6 is acceptable lighting. Toning No. In the range of 3-4, some subjects answered that they feel good. Furthermore, toning no. In 6, some subjects replied that the rough skin is less noticeable.

  From the result shown in FIG. The degree of stress reduction can be divided into three stages. That is, dimming No. In 2-10, there is a possibility that stress can be reduced without giving a sense of incongruity. Toning No. 10 and no. 7, for example, toning no. 8, toning no. In Nos. 2 to 8, there is a possibility that stress can be reduced in a state where the user who uses either the daylight color or the light source of the light bulb color can be allowed without any sense of incongruity. Toning No. In 2-6, while many users feel that it can be tolerated, there is a possibility that stress can be reduced in a state where they feel a good lighting environment. In particular, toning no. Since there is a subject who feels that around 3-4 is good, the toning no. A range of 4-6 is considered to provide the optimal lighting environment.

  Next, as an example of an objective evaluation for evaluating the mood of the subject from the lighting environment, an evaluation using amylase measurement values was performed. Stress applied to the body promotes excitement of the sympathetic nervous system through the hypothalamus of the sympathetic nervous system. This excitement activates amylase as well as various digestive enzymes that promote toxic decomposition in the digestive tract as a self-defense reaction in the body against external stress. By collecting salivary amylase, it is possible to determine how much stress has been applied. In addition, the measurement of amylase can use the commercially available stress measuring device made from Nipro, for example. When the measured value of amylase is 30 KU / L or less, it can be determined that there is no stress, and when it is 45 KU / L or more, it can be determined that there is a stress.

  FIG. 13 is an explanatory diagram illustrating an example of an objective evaluation result by color matching of the lighting apparatus 100 according to the present embodiment. FIG. 13 shows changes in amylase values of subjects A to D. The experimental method is as follows. Under the illumination of No. 1, amylase measurement is performed in a state where stress is present by causing the subjects A and B to perform the Krepelin test. The amylase measurement was performed after 30 minutes under the illumination of No. 6, and then the toning no. Amylase measurement was performed when the illumination was returned to 1.

  As shown in FIG. 13, the subjects A and B are in a stressed state, and the lighting environment is, for example, toning No. It can be seen that the stress is reduced by the state of 6. And the lighting environment is the original color matching No. Since returning to the state with stress by returning to 1, the test subject's stress reduction is toning no. It was found that this can be realized by setting the lighting environment to pink as in FIG.

  In another experimental method, first, the toning no. Under the illumination of No. 1, subjects C and D perform amylase measurement in a stress-free state. The amylase measurement was performed after 30 minutes under the illumination of No. 6, and then the toning no. Amylase measurement was performed when the illumination was returned to 1. As shown in FIG. For subjects C and D who were in a stress-free state under the lighting environment of No. 1, the toning No. It can be seen that even if the lighting environment is pink as in FIG.

  As described above, the present embodiment includes a daylight color LED, a light bulb color LED, and a red LED, and colors light from each LED. By providing the red LED, the light from the lighting device can be adjusted to a so-called pink color. Illumination environment in which a red LED is lit and pink color is adjusted for a subject who feels stress in a state where the daylight color LED is lit without turning on the red LED (for example, the state of toning No. 1) The stress was reduced and no stress was applied. And when it returned to the original lighting environment (white system) in the state which stress reduced, it came to feel stress again. In this way, stress can be reduced by adding a red LED and performing pink toning.

  Further, the toning state is changed to, for example, the toning number. 2 to No. By adjusting the chromaticity coordinate x of the toned light within the range of 0.343 to 0.531 and the chromaticity coordinate y within the range of 0.349 to 0.377. With the function of human color adaptation, a pink lighting environment can be realized without giving the user a sense of incongruity.

  Further, the toning state is changed to, for example, the toning number. 2 to No. By adjusting the chromaticity coordinate x of the toned light within the range of 0.343 to 0.449 and the chromaticity coordinate y within the range of 0.349 to 0.365. In a normal lighting environment, for example, it is possible to provide a pink lighting environment that can be tolerated without any sense of incongruity for a user who uses either a daylight color or a light bulb color light source.

  Further, the toning state is changed to, for example, the toning number. 2 to No. By adjusting the chromaticity coordinate x of the toned light within the range of 0.343 to 0.405 and the chromaticity coordinate y within the range of 0.349 to 0.358. It is possible to provide a pink lighting environment that many users can feel acceptable and can feel a good lighting environment.

  Further, the toning state is changed to, for example, the toning number. 4 to No. By adjusting the chromaticity coordinate x of the toned light within the range of 0.375 to 0.405 and the chromaticity coordinate y within the range of 0.353 to 0.358. In addition, it is possible to provide a pink lighting environment that can be perceived by more users and a better lighting environment. Toning No. 2 to 8, the deviation Δuv from the black body radiation can be in the range of −0.001 to −0.016.

  Also, a white LED having a dominant wavelength of 460 to 470 nm, a light bulb color LED having a dominant wavelength of 550 to 570 nm, and a red LED having a dominant wavelength of 620 to 640 nm, and adjusting the current supplied to each LED, A pink illumination environment in which the degree coordinate is adjusted to a desired range can be realized.

  In the above-described embodiment, the number of LED modules and the number of LEDs constituting the LED module are examples, and are not limited to the examples shown in the drawings. Alternatively, a daylight white LED may be used instead of the daylight color LED.

  In the above-described embodiment, the lighting device as the ceiling light has been described. However, the lighting device is not limited to the ceiling light, and may be another lighting device. Moreover, although the illuminating device provided with the LED module as the light source has been described, the light source is not limited to the LED module, and may be another light source such as an organic EL.

  In the embodiment described above, the toning stage is divided into ten stages, but the number of toning stages is not limited to ten.

  In the above-mentioned embodiment, although it was the structure provided with daylight color LED, light bulb color LED, and red LED, it is not limited to this, The structure provided with a color filter may be sufficient. For example, a white LED or a daylight color LED is provided, and the light bulb color and red color can be realized by providing a color filter on the white LED or the daylight color LED.

2 LED module 21 Daylight color LED
22 Light bulb color LED
23 Red LED

Claims (5)

In an illumination device including a plurality of light sources,
A white light source;
A second light source of light bulb color;
A red third light source, and
An illumination device configured to adjust the light from each light source to realize a pink illumination environment . In an illumination device including a plurality of light sources,
A white light source;
A second light source of light bulb color;
With a red third light source
With
It is configured to adjust the light from each light source,
Tone has a color light of chromaticity coordinates x is from 0.343 in the range of 0.531, the chromaticity coordinate y is lighting apparatus you lies in the range of 0.377 from 0.349 . From the chromaticity coordinates x of toned light 0.343 in the range of 0.449 to claim 2 chromaticity coordinate y is equal to or within the range of 0.365 from 0.349 The lighting device described. Tone has a color light of chromaticity coordinates x is from 0.343 in the range of 0.405, claim 2 or chromaticity coordinate y is characterized in that in the range of 0.358 from 0.349 The lighting device according to claim 3 . The first light source is a white LED having a dominant wavelength of 460 to 470 nm,
The second light source is a light bulb color LED having a dominant wavelength of 550 to 570 nm,
The illumination device according to any one of claims 1 to 4, wherein the third light source is a red LED having a dominant wavelength of 620 to 640 nm.

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