JP6017797B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device used for lighting in a living room.

  Conventional illumination devices are disclosed in Patent Documents 1 and 2. The illumination device of Patent Document 1 illuminates the water in the bathtub by changing the light color in a preset change pattern. Thereby, the feeling of relaxation at the time of bathing can be heightened.

  Moreover, the illuminating device of patent document 2 illuminates by changing illumination intensity according to the light quantity of sunlight. Thereby, it is possible to adjust the biological rhythm and to easily maintain the arousal level.

JP 2008-53183 A JP 09-306672 A

  However, the conventional lighting device does not contribute to the creation of a good sleep environment, and there is a problem that the user cannot obtain a good sleep under any lighting. In addition, there is a problem that the work efficiency of the work performed by the user cannot be increased under any lighting, and the work efficiency is low.

  An object of this invention is to provide the illuminating device which can improve sleep efficiency and work efficiency.

In order to achieve the above object, according to the present invention, a color matching temperature line and a black body passing through a point A (0.555, 0.394) on an xy chromaticity diagram defined by the International Commission on Illumination by light emission of an LED element. Illumination light of the illumination color in the first region surrounded by the equal deviation line for the radiation locus, the equal color temperature line passing through the point B (0.419, 0.343) and the equal deviation line for the black body radiation locus is emitted. A first illumination mode to
An equal deviation line for the isochromatic temperature line passing through the point B and the black body radiation locus, an equal deviation line for the black body radiation locus passing through the point C (0.418, 0.390), and a point D (0.397, 0) . 370) and a second illumination mode for emitting illumination light of the illumination color in the second region surrounded by the color matching temperature line passing through point C and the line connecting point C and point D;
And an operation unit capable of selecting the first illumination mode and the second illumination mode is provided.

  According to this configuration, illumination in the first illumination mode or the second illumination mode is performed by the light emission of the LED element. Illumination light of yellow-red illumination color or orange-pink illumination color is emitted in the first illumination mode. This makes the parasympathetic nerve superior, without disturbing the melatonin secretion of the user in the room. Accordingly, the sleep efficiency is improved by shortening the sleep latency at bedtime, and the accumulated feeling of fatigue is reduced by bringing relaxation and healing during a break.

  Moreover, the illumination light of the illumination color between yellow red and yellowish white or the illumination color between orange pink and light pink is emitted by 2nd illumination mode. As a result, the sympathetic nervous system is prevented from advancing due to work loads such as work and housework, so that fatigue during work is reduced and work efficiency is improved.

  According to the present invention, in the illumination device having the above configuration, the illumination color in the first illumination mode is represented by a Magdam ellipse 5-step centered on a point (0.499, 0.382) on the xy chromaticity diagram. It is a color that belongs to a color range.

  Further, according to the present invention, in the illumination device configured as described above, the illumination color of the first illumination mode is represented by a Magdam ellipse 1-step centered on a point (0.499, 0.382) on the xy chromaticity diagram. It is a color that belongs to a color range.

  In the illumination device having the above-described configuration, the illumination color of the second illumination mode is represented by a Magdam ellipse 5-step centered at a point (0.416, 0.377) on the xy chromaticity diagram. It is a color that belongs to a color range.

  Further, according to the present invention, in the illumination device configured as described above, the illumination color in the second illumination mode is represented by a Magdam ellipse 1-step centered on a point (0.416, 0.377) on the xy chromaticity diagram. It is a color that belongs to a color range.

  According to the present invention, the illumination device having the above-described configuration includes a cold color illumination mode for emitting daylight color, daylight white color, or white illumination light. According to this configuration, the cold color illumination mode is performed by a predetermined operation, and daylight color, daylight white, or white illumination light is emitted.

  Further, the present invention is characterized in that the illumination device having the above-described configuration is provided with a warm color illumination mode for emitting light bulb color or warm white illumination light. According to this configuration, the warm color illumination mode is performed by a predetermined operation, and light bulb color or warm white illumination light is emitted.

  According to the present invention, in the illumination device having the above-described configuration, the illumination color is variable to a color between the cold color illumination mode and the warm color illumination mode, and the operation unit selects the first illumination mode. And a second operation switch for selecting the second illumination mode, and a variable switch for stepwise varying the illumination color to a color between the cold color illumination mode and the warm color illumination mode.

  According to this configuration, illumination in the first illumination mode is performed when the first operation switch of the operation unit is operated, and illumination in the second illumination mode is performed when the second operation switch is operated. When the variable switch is operated, the illumination color is changed stepwise from the illumination color in the cold color illumination mode to the illumination color in the warm color illumination mode.

  In the illumination device having the above-described configuration, the present invention makes the illumination color variable between the cold color illumination mode and the warm color illumination mode, and makes the illumination color variable in the first region and the second region, A first variable switch for changing the illumination color to a color in the first area and the second area; and a second variable switch for changing the illumination color to a color between the cold color illumination mode and the warm color illumination mode. It is characterized by having.

  According to this configuration, the first area and the second area are continuous on the xy chromaticity diagram. The first illumination mode and the second illumination mode are performed by changing the illumination color of the first region stepwise from the illumination color of the first region by the operation of the first variable switch. When the second variable switch is operated, illumination is performed by changing stepwise from the illumination color in the cold color illumination mode to the illumination color in the warm color illumination mode.

  Further, the present invention is characterized in that the illumination device having the above-described configuration is provided with a warm color illumination mode for emitting light bulb color or warm white illumination light.

  According to the present invention, in the illumination device having the above-described configuration, only the first illumination mode and the second illumination mode having different illumination colors are provided, and the operation unit selects the first illumination mode, and the second illumination mode. And a second operation switch for selecting. According to this configuration, illumination in the first illumination mode is performed when the first operation switch of the operation unit is operated, and illumination in the second illumination mode is performed when the second operation switch is operated.

  According to the present invention, in the illumination device having the above-described configuration, only the first illumination mode and the second illumination mode having different illumination colors are provided, the illumination color is variable in the first area and the second area, and the operation unit includes It has a variable switch that changes the illumination color step by step. According to this configuration, the first area and the second area are continuous on the xy chromaticity diagram. The first illumination mode and the second illumination mode are performed stepwise by changing the illumination color of the first region from the illumination color of the first region by operating the variable switch.

  Further, the present invention is characterized in that the lighting device having the above-described configuration includes a plurality of the LED elements, and each of the LED elements emits light in a different color. According to this configuration, the plurality of LED elements emit light in different colors and are mixed, and the illumination light in each illumination mode is emitted.

  According to the present invention, the illumination device having the above-described configuration includes the LED element that emits a light bulb color, the LED element that emits red light, and the LED element that emits white light. According to this structure, the illumination light of each illumination mode is emitted by mixing the light bulb color emitted from the plurality of LED elements with red and white.

  Further, the present invention is characterized in that the illumination device having the above-described configuration includes a phosphor that converts the emitted light of the LED element into a different wavelength. According to this configuration, the emitted light from the LED element and the fluorescent light from the phosphor are mixed, and the illumination light in each illumination mode is emitted.

  According to the present invention, in the illumination device having the above configuration, the LED element that emits blue light, the phosphor that converts blue light into light bulb light, the phosphor that converts blue light into red light, and blue And a phosphor that converts light into yellow light.

  According to this configuration, the light emitted from the LED element and the yellow fluorescence from the phosphor are mixed to form white light. The white light, red fluorescence by the phosphor, and light bulb color fluorescence by the phosphor are mixed to emit illumination light in each illumination mode.

  According to the present invention, the isochromatic temperature line passing through the point A (0.555, 0.394) on the xy chromaticity diagram and the equal deviation line with respect to the black body radiation locus, and the point B (0.419, 0.343) The first illumination mode for emitting illumination light of the illumination color in the first region surrounded by the isochromatic temperature line passing through and the isodeviation line with respect to the black body radiation locus, and the isochromatic temperature line and black body radiation passing through the point B An equal deviation line for the locus, an equal deviation line for the blackbody radiation locus passing through the point C (0.418, 0.390), a color matching temperature line passing through the point D (0.397, 0.370), a point The second illumination mode for emitting illumination light of the illumination color in the second region surrounded by the straight line connecting C and the point D is performed by light emission of the LED element.

  For this reason, the first illumination mode can provide good quality sleep such as shortening the sleep latency and improving sleep efficiency and reduce the accumulated fatigue. In addition, the work efficiency of the work performed by the user in the second illumination mode can be improved. In addition, since the illumination light of the first region and the second region is emitted by the light emitted from the LED element, the illumination does not include ultraviolet rays that have a chemical adverse effect on the human body or infrared rays that have a thermal adverse effect. It can be performed.

The perspective view which shows the illuminating device of 1st Embodiment of this invention. The top view which shows the light source board | substrate of the illuminating device of 1st Embodiment of this invention. The block diagram which shows the structure of the illuminating device of 1st Embodiment of this invention. Explanatory drawing which shows the structure of the LED element light emission mechanism of the illuminating device of 1st Embodiment of this invention. Xy chromaticity diagram showing the illumination color of the illumination device of the first embodiment of the present invention The front view which shows the remote controller of the illuminating device of 1st Embodiment of this invention. The front view which shows the remote controller of the illuminating device of 2nd Embodiment of this invention. The front view which shows the remote controller of the illuminating device of 3rd Embodiment of this invention. Xy chromaticity diagram showing the illumination color of the illumination device of each example of the present invention and each comparative example

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view of the illumination device of the first embodiment as viewed from below. The lighting device 100 constitutes a ceiling light that is a lighting fixture, and is attached to an indoor ceiling surface. The lighting device 100 may be a lighting fixture attached to a side wall of a room.

  The lighting device 100 includes a substantially plate-shaped main body 1 having a circular shape that is fixed to an indoor ceiling surface located above, and a remote controller 50 (see FIG. 6), and illuminates a lower indoor floor surface. The main body 1 includes a light source substrate 2, a reflecting plate 3, a frame 4, and an illumination control unit 5.

  The light source substrate 2 is formed in a rectangular shape in plan view, and is attached to the lower surface of the main body 1 via the frame 4 while standing upright or substantially perpendicular to the main body 1. A plurality of white LED elements 6a, light bulb color LED elements 6b, and red LED elements 6c (see FIG. 2) are provided on the surface of the light source substrate 2. In the following description, the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c may be collectively referred to as the LED element 6.

  The reflection plate 3 is provided on the lower surface of the main body 1 and on the radially outer portion of the light source substrate 2. The reflector 3 reflects the light emitted from the LED element 6 toward the floor surface, and the reflected light irradiates the floor surface. Thereby, the illumination intensity of the whole floor surface is obtained.

  The frame 4 has a regular polygon (for example, a regular octagon in FIG. 1) or a substantially regular polygon centered on a central axis extending in the vertical direction of the main body 1. The light source substrate 2 is attached to each side of the regular octagon of the frame 4 so that the light emission direction of the LED elements 6 faces radially outward. The LED element 6 emits light radially outward with respect to the center of the main body 1, and the light is reflected by the reflector 3.

  The illumination control unit 5 has a control board (not shown) including a power circuit (see FIG. 3) and the like, and is arranged on the inner side in the radial direction of the frame 4. The illumination control unit 5 is connected to a power connector (not shown) provided at the central portion of the main body 1 in the radial direction, and receives power from an external power source through the power connector. And the illumination control part 5 supplies the electric power to the LED element 6, and makes the LED element 6 light-emit.

  Although not shown for convenience of explanation, a diffusing lens or a cover may be provided. The diffusion lens is attached to the front surface of the light emitting surface of the light source substrate 2 and uniformly diffuses the light emitted from the LED element 6. The cover has a circular shape that is substantially the same diameter as the outer diameter of the main body 1 and is fitted and held on the peripheral edge of the main body 1 to cover the entire lower surface of the main body 1. The cover further diffuses the light emitted from the LED element 6 and prevents a person from directly viewing the light.

  In this way, since the LED device 6 does not directly illuminate the floor surface in the lighting device 100, even when a person faces the ceiling and looks directly at the illumination, the light of the LED element 6 is difficult to be directly inserted into the human eye. The burden can be reduced.

  FIG. 2 shows a plan view of the light source substrate 2. On the light source substrate 2, a plurality of white LED elements 6a, light bulb color LED elements 6b, and red LED elements 6c are arranged, for example, in a substantially horizontal row. In the present embodiment, nine white LED elements 6a, four bulb-color LED elements 6b, and three red LED elements 6c are mounted on the light source substrate 2.

  The arrangement and interval of the LED elements 6 affect the uniformity of light emission to the reflector 3. When the light emission to the reflector 3 becomes non-uniform, illuminance unevenness or the like occurs, and the illumination quality of the illumination device 100 is degraded. In particular, when each LED element 6 emits light in a different color and performs toning with the combination thereof, non-uniform illuminance causes color unevenness and greatly affects the illumination quality of the illumination device 100. Therefore, when using the several LED element 6 which light-emits with a different color, the arrangement | positioning and space | interval become especially important.

  The white LED element 6c emits white light. The light bulb color LED element 6b emits light in a light bulb color. More specifically, the light bulb color LED element 6b is a color belonging to a color matching range represented by a Magdam ellipse 5-step centered on a point (0.445, 0.408) on an xy chromaticity diagram determined by the International Lighting Commission. Flashes on. The red LED element 6c emits red light. More specifically, the red LED element 6c emits light in a color having a maximum wavelength value of 575 nm to 780 nm.

  Here, the color of the light bulb color LED element 6b belongs to the same color range represented by the Magdam ellipse 5-step centered on the point (0.445, 0.408) on the xy chromaticity diagram as described above. And there is some variation. The color of the red LED element 6c also has a certain range with the maximum value of the wavelength being 575 nm to 780 nm as described above.

  For this reason, as shown in FIG. 2, a plurality of white LED elements 6a, a plurality of light bulb color LED elements 6b, and a plurality of red LED elements 6c can be mounted on the light source substrate 2 to suppress variation in coloring. A plurality of LED elements having different colors may be configured as one LED element.

  Next, a detailed configuration related to the control of the illumination device 100 will be described with reference to FIGS. 3 and 4 in addition to FIG. FIG. 3 is a block diagram showing the configuration of the lighting device 1, and FIG. 4 is an explanatory diagram showing the configuration of the LED element light emitting mechanism of the lighting device 1.

  The illumination control unit 5 includes a power supply circuit 10 as shown in FIG. The power supply circuit 10 receives power supplied from an AC power supply (AC input, 100 V), converts the power into a DC voltage, and supplies power to each unit of the lighting device 100. In the present embodiment, the power supply circuit 10 is shown as supplying power to the control power supply circuit 14 and the light source substrate 2 as an example. However, the present invention is not limited to this and is also necessary for other parts. It is assumed that power is supplied.

  In addition to the power supply circuit 10, the illumination control unit 5 includes a CPU (Central Processing Unit) 11, a memory 12, a PWM (Pulse Width Modulation) control circuit 13, a control power supply circuit 14, and an input unit 15. Yes. As an example, the CPU 11, the memory 12, and the PWM control circuit 13 are configured by a microcomputer.

  The CPU 11 is connected to each unit and instructs an operation necessary for controlling the entire lighting device 100. The CPU 11 is connected to a switch such as a remote controller 50 (see FIG. 6) wirelessly or by wire, and receives an instruction input in response to an operation of the switch at the input unit 15.

  The memory 12 stores various programs and initial values for controlling the lighting device 100 and is also used as a working memory for the CPU 11. The PWM control circuit 13 generates a PWM pulse necessary for driving the LED element 6 in accordance with an instruction from the CPU 11. The control power supply circuit 14 adjusts the voltage of the power supplied from the power supply circuit 10 to supply it to the CPU 11.

  As described above, the light source substrate 2 is provided with the three types of LED elements 6 including the white LED element 6a, the bulb-colored LED element 6b, and the red LED element 6c, and an FET (Field for driving each LED element 6). Effect Transistor) switches 21, 22, and 23 are arranged.

  For convenience of explanation, FIG. 3 shows a white LED element 6a, a light bulb color LED element 6b, and a red LED element 6c, respectively. However, as shown in FIG. 2, the white LED element 6a and the light bulb color LED are drawn. A plurality of elements 6b and red LED elements 6c are provided. The FET switches 21, 22, and 23 may be in the PWM control circuit 13.

  Next, the details of the light emitting mechanism of the LED element 6 will be described. The CPU 11 instructs the PWM control circuit 13 to generate and output PWM pulses M1, M2, and M3 for emitting at least one of the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c.

  The white LED element 6 a, the light bulb color LED element 6 b and the red LED element 6 c are supplied with necessary power from the power supply circuit 10. FET switches 21, 22, and 23 are provided between the white LED element 6a, the light bulb color LED element 6b, the red LED element 6c, and the ground voltage GND, respectively.

  In response to the PWM pulses M1, M2, and M3, the FETs 21, 22, and 23 are turned on and off, whereby current is supplied to and cut off from the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c. When current is supplied to the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c, each of these LED elements 6 emits light. In addition, although the structure which light-emits the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c was demonstrated, it is the same also when the other LED element is provided with two or more.

  Each LED element 6 emits light with a light amount corresponding to the operation of the remote controller 50 (see FIG. 6) by the light emitting mechanism, and illumination lights of a plurality of illumination colors are emitted. The illumination device 100 includes a first illumination mode, a second illumination mode, a cold color illumination mode, and a warm color illumination mode. Further, the illumination color can be changed to a color between the cold color illumination mode and the warm color illumination mode.

  FIG. 5 shows a detailed view near the black body radiation locus V0 of the xy chromaticity diagram determined by the International Commission on Illumination. In the same figure, a uniform color temperature line group and a uniform deviation line group with respect to the black body radiation locus V0 are described in an overlapping manner. In the first illumination mode, on the xy chromaticity diagram, the color deviation line V1 with respect to the color matching temperature line W1 passing through the point A (0.555, 0.394) and the black body radiation locus V0, and the point B (0.419, The illumination light of the illumination color in the first region S1 surrounded by the uniform color temperature line W2 passing through 0.343) and the uniform deviation line V2 with respect to the black body radiation locus V0 is emitted.

  A point A has a correlated color temperature of 1680 K, and indicates a point of deviation Δuv = −0.003 with respect to the blackbody radiation locus V0. Point B has a correlated color temperature of 2750 K and a deviation Δuv = −0.025 with respect to the blackbody radiation locus V0. The chromaticity coordinate of the intersection E between the equal color temperature line W1 and the equal deviation line V2 is (0.510, 0.340), and the chromaticity of the intersection F between the equal color temperature line W2 and the equal deviation line V1. The coordinates are (0.453, 0.401). Accordingly, the first region S1 is surrounded by points A, E, B, and F in the clockwise direction in the drawing.

  In the second illumination mode, on the xy chromaticity diagram, the equal color temperature line W2 and the equal deviation line V2 passing through the point B, the equal deviation line V1 passing through the point C (0.418, 0.390), and the point D ( Illumination light of the illumination color in the second region S2 surrounded by the color matching temperature line W3 passing through 0.397, 0.370) and the straight line connecting the point C and the point D is emitted.

  Point C indicates a point where the correlated color temperature is 3250K and the deviation Δuv = −0.003 with respect to the blackbody radiation locus V0. Point D represents a point having a correlated color temperature of 3500 K and a deviation Δuv = −0.008 with respect to the blackbody radiation locus V0. Note that the chromaticity coordinates of the intersection point G between the equal color temperature line W3 and the equal deviation line V2 are (0.383, 0.329). Accordingly, the second region S2 is surrounded by the points F, B, G, D, and C in the clockwise direction in the drawing, and is continuous with the first region S1.

  The first region S1 is yellowish red or orange pink. For this reason, illumination light of yellow-red illumination color or orange-pink illumination color is emitted in the first illumination mode. Thereby, it is possible to make the parasympathetic nerve superior without disturbing the melatonin secretion of the user in the room. As a result, the sleep latency at bedtime can be shortened, the total sleep time can be extended, and sleep efficiency can be improved. In addition, the fatigue can be reduced by bringing relaxation and healing during breaks and group meetings.

  The second region S2 has a color between yellow-red and yellowish white, or a color between orange pink and light pink. For this reason, the illumination light of the illumination color between yellow red and yellowish white or the illumination color between orange pink and light pink is emitted by the second illumination mode. As a result, the sympathetic nervous system is prevented from advancing due to work loads such as business and housework, and the feeling of fatigue during work is reduced. As a result, it is possible to suppress a reduction in work efficiency during long-time work and improve work efficiency.

  The cold color illumination mode emits illumination light of a daylight color, a daylight white color, or a white (narrow sense) illumination color that has been conventionally used. The warm color illumination mode emits illumination light of a light bulb color or warm white illumination color that has been conventionally used.

  "Yellow red", "Orange pink", "Yellow white", "Light pink", "Daylight color", "Daylight white", "Narrow white", "Light bulb color", "Warm white" Corresponds to the light source color defined by the JIS standard (JIS Z 8110).

  FIG. 6 shows a front view of the remote controller 50. The remote controller 50 includes a display unit 51 and an operation unit 52. The display unit 51 is formed of a liquid crystal panel or the like, and displays the light amount of the illumination device 100 and the like. The operation unit 52 includes a plurality of operation keys, and includes a turn-on key 53, a turn-off key 54, a cross key 55, a first illumination mode key 56, and a second illumination mode key 57.

  The lighting device 100 is turned on by energizing the LED element 6 by operating the lighting key 53. The lighting device 100 is turned off by turning off the LED element 6 by operating the turn-off key 54.

  The cross key 55 (variable switch) has a cold color portion 55a, a warm color portion 55b, a light increasing portion 55c, and a light reducing portion 55d. By operating the cold color portion 55a and the warm color portion 55b, the illumination color is changed stepwise between the illumination color in the cold color illumination mode and the illumination color in the warm color illumination mode. The illumination color can be easily changed by increasing or decreasing the light amount ratio of the white LED element 6a and the light bulb color LED element 6b.

  The brightening portion 55c is marked “bright” on the cross key 55 and increases the amount of illumination light. The light reduction unit 55d is marked “dark” on the cross key 55, and reduces the amount of illumination light.

  The first illumination mode key 56 (first operation switch) performs illumination in the first illumination mode. In the present embodiment, the first illumination mode is an orange-pink illumination color, and “color 1” is written on the first illumination mode key 56. Other names may be written on the first illumination mode key 56 according to circumstances, such as when the first illumination mode is an illumination color other than orange-pink.

  The second illumination mode key 57 (second operation switch) performs illumination in the second illumination mode. In this embodiment, since the second illumination mode is a light pink illumination color, “color 2” is written on the second illumination mode key 57. Other names may be written on the second illumination mode key 57 according to circumstances, such as when the second illumination mode is an illumination color other than light pink.

  In the illumination device 100 configured as described above, a desired illumination mode is selected by the remote controller 50. Thereby, the CPU 11 instructs the PWM control circuit 13 so that the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c emit light with a predetermined intensity. The PWM control circuit 13 outputs PWM pulses M1, M2, and M3 according to instructions from the CPU 11, and performs color adjustment so that the illumination color corresponds to each illumination mode.

  According to the present embodiment, the light emission of the LED element 6 causes the color matching temperature line W1 and the equal deviation line V1 passing through the point A (0.555, 0.394) on the xy chromaticity diagram, and the point B (0.419). , 0.343) and a first illumination mode for emitting illumination light of the illumination color in the first region S1 surrounded by the equal color temperature line W2 and the equal deviation line V2. Further, the color matching temperature line W2 and the equal deviation line V2 passing through the point B, the equal deviation line V1 passing through the point C (0.418, 0.390), and the point D (0.397, 0.370) are passed. A second illumination mode for emitting illumination light of the illumination color in the second region S2 surrounded by the color matching temperature line W3 and a straight line connecting the point C and the point D is provided. The operation of increasing or decreasing the amount of illumination light in the first illumination mode and the second illumination mode can be performed by the light increasing portion 55c and the light reducing portion 55d of the cross key 55.

  For this reason, sleep efficiency can be improved and the accumulated fatigue can be reduced by the first illumination mode. In addition, the work efficiency of the work performed by the user in the second illumination mode can be improved.

  In general, fluorescent lamps may leak ultraviolet rays, and incandescent bulbs are said to emit a large amount of infrared rays. Ultraviolet rays may have a chemical adverse effect on living organisms and indoor facilities, and infrared rays may have a thermal adverse effect. However, since the illumination is performed by the light emission of the LED element 6 that contains almost no ultraviolet rays or infrared rays, the illumination device 100 with less adverse effects on the human body can be provided.

  In addition, since a cold color illumination mode for emitting daylight color, daylight white color, or white illumination light is provided, illumination with a conventional illumination color can be performed.

  In addition, since a warm color illumination mode for emitting light bulb color or warm white illumination light is provided, illumination with a conventional illumination color can be performed.

  The operation unit 52 also selects a first illumination mode key 56 (first operation switch) for selecting the first illumination mode, a second illumination mode key 57 (second operation switch) for selecting the second illumination mode, and cold-color illumination. There is a cross key 55 (variable switch) for changing the illumination color stepwise to a color between the mode and the warm color illumination mode. Thereby, according to a user's preference, it can change easily to the desired illumination color between cold color and warm color. Moreover, sleep efficiency and work efficiency can be improved by easily selecting the first illumination mode and the second illumination mode according to the state of the user.

  Further, only two switches, the first illumination mode key 56 and the second illumination mode key 57, are explicitly switched to the first illumination mode and the second illumination mode. The illumination colors that can be expected to have the greatest effect in each of the first area S1 and the second area S2 are set as initial values in the first illumination mode key 56 and the second illumination mode key 57, respectively (the initial values in the memory 12). As registered in advance). Accordingly, the user can easily and quickly select a suitable illumination color in the first illumination mode or the second illumination mode.

  Further, for the first illumination mode key 56 and the second illumination mode key 57, brightness (light quantity of illumination light) suitable for each illumination color is set as an initial value (registered in advance as an initial value of the memory 12). Good. Accordingly, the user can easily and quickly select the brightness when using the first illumination mode or the second illumination mode. Therefore, the convenience of the user can be further improved and the effect of the illumination color can be obtained more suitably.

  In addition, since the key operation can be performed easily and quickly in this manner, it is possible to avoid as much as possible the troublesomeness and stress caused by the key operation itself. Therefore, the effect on sleep expected by the first illumination mode and the effect on work expected by the second illumination mode are not hindered.

  Further, since the white LED element 6a, the light bulb color LED element 6b, and the red LED element 6c that are colored in different colors are included, the illumination light of each illumination color in the first illumination mode, the second illumination mode, the cold color illumination mode, and the warm color illumination mode Can be easily emitted.

  Next, FIG. 7 is a front view showing a remote controller 50 of the illumination device of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIG. The illumination device 100 of the present embodiment has a variable illumination color in the first region S1 and the second region S2 that are continuous on the xy chromaticity diagram. Other parts are the same as those in the first embodiment.

  The remote controller 50 is provided with a variable key 58 (first variable switch) for changing the illumination color to the color in the first area S1 and the second area S2. By operating the variable key 58, the first illumination mode and the second illumination mode are performed stepwise from the illumination color of the first region S1 to the illumination color of the second region S2. Similarly to the above, “color 1” and “color 2” written on the variable key 58 may have other names.

  Further, the illumination color is changed stepwise between the illumination color in the cold color illumination mode and the illumination color in the warm color illumination mode by operating the cross key 55 (second variable switch) similar to the above.

  According to the present embodiment, since the variable key 58 (first variable switch) for changing the illumination color is provided in the first area S1 and the second area S2, the first illumination mode can be easily set according to the state and preference of the user. The illumination color in the second illumination mode can be varied.

  Here, the variable range of the illumination color by the variable key 58 is limited to the range of the first region S1 and the second region S2. Accordingly, it is possible to prevent the selection of an illumination color that is out of the illumination color range included in the first region S1 or the second region S2 due to the variable operation. For this reason, the effect on the sleep expected by the first illumination mode and the effect on the work expected by the second illumination mode can be obtained. If the first region S1 and the second region S2 are not continuous as in the present embodiment, the illumination is stepped over between the first region S1 and the second region S2 within a limited range. Even if the color is changed, the same effect can be obtained.

  Next, FIG. 8 is a front view showing the remote controller 50 of the lighting apparatus of the third embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIG. The illumination device 100 of this embodiment is provided with only the first illumination mode and the second illumination mode, omitting the cold color illumination mode and the warm color illumination mode of the first embodiment. Other parts are the same as those in the first embodiment.

  The remote controller 50 is omitted from the cross key 55 (see FIG. 6), and is provided with a turn-on key 53, a turn-off key 54, a first illumination mode key 56, and a second illumination mode key 57.

  Illumination in the first illumination mode is performed by operating the first illumination mode key 56 (first operation switch). Illumination in the second illumination mode is performed by operating the second illumination mode key 57 (second operation switch). Similarly to the above, “Color 1” written on the first illumination mode key 56 and “Color 2” written on the second illumination mode key 57 may be given other names.

  According to the present embodiment, since only the first illumination mode and the second illumination mode having different illumination colors are provided, the user can easily select the illumination color of the first illumination mode or the illumination color of the second illumination mode.

  Further, only two switches, the first illumination mode key 56 and the second illumination mode key 57, are explicitly switched to the first illumination mode and the second illumination mode. The illumination colors that can be expected to have the greatest effect in each of the first area S1 and the second area S2 are set as initial values in the first illumination mode key 56 and the second illumination mode key 57, respectively (the initial values in the memory 12) As registered in advance). Accordingly, the user can easily and quickly select a suitable illumination color in the first illumination mode or the second illumination mode.

  Further, for the first illumination mode key 56 and the second illumination mode key 57, brightness (light quantity of illumination light) suitable for each illumination color is set as an initial value (registered in advance as an initial value of the memory 12). Good. Accordingly, the user can easily and quickly select the brightness when using the first illumination mode or the second illumination mode. Therefore, the convenience of the user can be further improved and the effect of the illumination color can be obtained more suitably.

  In addition, since the key operation can be performed easily and quickly in this manner, it is possible to avoid as much as possible the troublesomeness and stress caused by the key operation itself. Therefore, the effect on sleep expected by the first illumination mode and the effect on work expected by the second illumination mode are not hindered.

  As in the second embodiment, the illumination color is variable in the first region S1 and the second region S2 that are continuous on the xy chromaticity diagram, and the illumination color is changed to the color in the first region S1 and the second region S2. A variable key 58 (see FIG. 7) may be provided.

  Further, a variable key (not shown) for variably increasing / decreasing the amount of illumination light may be provided. Further, with respect to the first illumination mode key 56 and the second illumination mode key 57, each time the key is pressed, the amount of illumination light is changed stepwise (for example, light amount 1 → light amount 2 → light amount 3 → light amount 1). May be. Further, regarding the first illumination mode key 56 and the second illumination mode key 57, the amount of illumination light may be variably changed according to the time the key is pressed. In this case, it is possible to provide the user with a function of increasing / decreasing the amount of illumination light without providing a new key.

  In the first to third embodiments, the illumination colors of the first illumination mode and the second illumination mode may be adjusted by the LED elements 6 of other emission colors. For example, a plurality of LED elements that respectively emit blue, green, and red light may be provided. Moreover, you may provide the LED element which light-emits the color of 1st area | region S1, and the LED element which light-emits the color of 2nd area | region S2.

  Moreover, you may provide the fluorescent substance which converts the emitted light of a LED element and a LED element into a different wavelength. For example, a plurality of LED elements that emit blue light and a phosphor that converts blue light into a light bulb color, red, and yellow may be provided corresponding to each LED element. White light is formed by the blue light and the yellow light, and the illumination colors in the first illumination mode and the second illumination mode can be adjusted by white, light bulb color, and red light in the same manner as described above.

  Moreover, although the lighting fixture attached in a living room is comprised with the illuminating device 100, the illuminating device which comprises the light bulb etc. which are attached to a lighting fixture may be sufficient.

  Hereinafter, examples and comparative examples in which the illumination color is varied in order to evaluate the illumination color of the present embodiment using illumination light will be described. FIG. 9 shows an enlarged view of the xy chromaticity diagram of FIG. The points of the following Examples 1, 2,... Are indicated by p1, p2,..., And the points of Comparative Examples 1, 2,.

  The illuminating device 1 of Example 1 emits the illumination light of the illumination color of point A (0.555, 0.394) (point p1 of FIG. 9) of 1st area | region S1.

  The illuminating device 1 of Example 2 emits the illumination light of the illumination color of the point (0.537, 0.373) (point p2 in FIG. 9) on the color matching temperature line W1 of the first region S1.

  The illuminating device 1 of Example 3 emits the illumination light of the illumination color of the point E (0.510, 0.340) (point p3 in FIG. 9) of the first region S1.

  The illuminating device 1 of Example 4 emits the illumination light of the illumination color of the point (0.515, 0.404) (point p3 in FIG. 9) on the equal deviation line V1 of the first region S1.

  The illuminating device 1 of Example 5 emits the illumination light of the illumination color of the point J (0.499, 0.382) (point p5 in FIG. 9) inside the first region S1.

  The illuminating device 1 of Example 6 emits the illumination light of the illumination color of the point (0.473, 0.347) (point p6 in FIG. 9) on the equal deviation line V2 of the first region S1.

  The illuminating device 1 of Example 7 emits the illumination light of the illumination color of the point (0.471, 0.404) (point p7 in FIG. 9) on the equal deviation line V1 of the first region S1.

  The illuminating device 1 of Example 8 emits the illumination light of the illumination color of the point (0.462, 0.390) (point p8 in FIG. 9) inside the first region S1.

  The illuminating device 1 of Example 9 emits illumination light of the illumination color of the point (0.436, 0.347) (point p9 in FIG. 9) on the equal deviation line V2 of the first region S1.

  The illuminating device 1 of Example 10 emits illumination light of the illumination color at the point F (0.453, 0.401) (point p10 in FIG. 9) at the boundary between the first region S1 and the second region S2.

  The illuminating device 1 of Example 11 illuminates the illumination color at the point (0.446, 0.388) (point p11 in FIG. 9) on the color matching temperature line W2 at the boundary between the first region S1 and the second region S2. Emits light.

  The illuminating device 1 of Example 12 emits illumination light of the illumination color at the point B (0.419, 0.343) (point p12 in FIG. 9) at the boundary between the first region S1 and the second region S2.

  The illuminating device 1 of Example 13 emits illumination light of the illumination color of the point (0.433, 0.394) (point p13 in FIG. 9) on the equivariant line V1 in the second region S2.

  The illuminating device 1 of Example 14 emits illumination light of the illumination color at the point (0.422, 0.373) (point p14 in FIG. 9) inside the second region S2.

  The illuminating device 1 of Example 15 emits illumination light of the illumination color of the point (0.406, 0.339) (point p15 in FIG. 9) on the equal deviation line V2 of the second region S2.

  The illuminating device 1 of Example 16 emits the illumination light having the illumination color at the point C (0.418, 0.390) (the point p16 in FIG. 9) in the second region S2.

  The illuminating device 1 of Example 17 emits the illumination light of the illumination color of the point K (0.416, 0.377) (point p17 in FIG. 9) inside the second region S2.

  The illuminating device 1 of Example 18 emits the illumination light of the illumination color of the point (0.397, 0.336) (point p18 in FIG. 9) on the equal deviation line V2 of the second region S2.

  The illuminating device 1 of Example 19 emits the illumination light of the illumination color of the point D (0.397, 0.370) (point p19 in FIG. 9) in the second region S2.

  The illuminating device 1 of Example 20 emits the illumination light of the illumination color at point G (0.383, 0.329) (point p20 in FIG. 9) in the second region S2.

[Comparative Example 1]
Further, the lighting device 1 of the comparative example 1 compared with each example is closer to the black body radiation locus V0 than the equal deviation line V1, and has a lower correlated color temperature than the equal color temperature line W1 (0.586, 0. 393) The illumination light of the illumination color (point q1 in FIG. 9) is emitted.

[Comparative Example 2]
The illumination device 1 of Comparative Example 2 emits illumination light of the illumination color at the point (0.579, 0.384) (point q2 in FIG. 9) on the equal deviation line V1 having a correlated color temperature lower than the color matching temperature line W1. Exit.

[Comparative Example 3]
The illuminating device 1 of the comparative example 3 emits the illumination light of the illumination color of the point (0.558, 0.364) (point q3 in FIG. 9) whose correlated color temperature is lower than the point of the example 2.

[Comparative Example 4]
The illumination device 1 of Comparative Example 4 emits illumination light of the illumination color at the point (0.528, 0.332) (point q4 in FIG. 9) on the equal deviation line V2 having a correlated color temperature lower than the color matching temperature line W1. Exit.

[Comparative Example 5]
The illuminating device 1 of Comparative Example 5 is farther from the black body radiation locus V0 than the equal deviation line V2, and has a correlated color temperature lower than the color matching temperature line W1 (0.516, 0.318) (point q5 in FIG. 9). The illumination light of the illumination color is emitted.

[Comparative Example 6]
The illumination device 1 of Comparative Example 6 illuminates the illumination color at the point (0.563, 0.404) (point q6 in FIG. 9) on the color matching temperature line W1 that is closer to the blackbody radiation locus V0 than the equal deviation line V1. Emits light.

[Comparative Example 7]
The illuminating device 1 of the comparative example 7 has the illumination color of the point (0.498, 0.326) (point q7 in FIG. 9) on the color matching temperature line W1 farther from the black body radiation locus V0 than the equal deviation line V2. Illumination light is emitted.

[Comparative Example 8]
The illumination device 1 of the comparative example 8 emits illumination light of the illumination color of the point (0.552, 0.414) (point q8 in FIG. 9) closer to the black body radiation locus V0 than the point of the fourth embodiment.

[Comparative Example 9]
The illuminating device 1 of the comparative example 9 emits the illumination light of the illumination color of the point (0.462, 0.331) (point q9 in FIG. 9) further away from the blackbody radiation locus V0 than the point of the sixth embodiment.

[Comparative Example 10]
The illumination device 1 of the comparative example 10 emits illumination light of the illumination color of the point (0.477, 0.414) (point q10 in FIG. 9) closer to the blackbody radiation locus V0 than the point of the seventh embodiment.

[Comparative Example 11]
The illuminating device 1 of the comparative example 11 emits the illumination light of the illumination color of the point (0.429, 0.336) (point q11 in FIG. 9) farther from the black body radiation locus V0 than the point of the ninth example.

[Comparative Example 12]
The illuminating device 1 of Comparative Example 12 illuminates the illumination color at the point (0.457, 0.410) (point q12 in FIG. 9) on the color matching temperature line W2 that is closer to the blackbody radiation locus V0 than the equal deviation line V1. Emits light.

[Comparative Example 13]
The illumination device 1 of the comparative example 13 has the illumination color of the point (0.410, 0.328) (point q13 in FIG. 9) on the color matching temperature line W2 farther from the black body radiation locus V0 than the equal deviation line V2. Illumination light is emitted.

[Comparative Example 14]
The illumination device 1 of Comparative Example 14 emits illumination light of the illumination color of the points (0.437, 0.404) (point q14 in FIG. 9) closer to the blackbody radiation locus V0 than the points of Example 13.

[Comparative Example 15]
The illuminating device 1 of the comparative example 15 emits the illumination light of the illumination color of the point (0.398, 0.324) (point q15 in FIG. 9) farther from the black body radiation locus V0 than the point of the example 15.

[Comparative Example 16]
The illumination device 1 of the comparative example 16 emits illumination light of the illumination color of the point (0.420, 0.398) (point q16 in FIG. 9) closer to the black body radiation locus V0 than the point C.

[Comparative Example 17]
The illuminating device 1 of Comparative Example 17 emits illumination light of the illumination color at the point (0.392, 0.325) (point q17 in FIG. 9) farther from the blackbody radiation locus V0 than the point of Example 18.

[Comparative Example 18]
The illuminating device 1 of Comparative Example 18 illuminates the illumination color at the point (0.405, 0.391) (point q18 in FIG. 9) on the color matching temperature line W3 that is closer to the blackbody radiation locus V0 than the equal deviation line V1. Emits light.

[Comparative Example 19]
The illumination device 1 of Comparative Example 19 emits illumination light of the illumination color at the intersection (0.402, 0.383) (point q19 in FIG. 9) between the equal deviation line V1 and the color matching temperature line W3.

[Comparative Example 20]
The illumination device 1 of the comparative example 20 has the illumination color of the point (0.379, 0.319) (point q20 in FIG. 9) on the color matching temperature line W3 farther from the black body radiation locus V0 than the equal deviation line V2. Illumination light is emitted.

[Comparative Example 21]
The lighting device 1 of Comparative Example 21 is closer to the black body radiation locus V0 than the equal deviation line V1, and has a higher correlated color temperature (0.395, 0.385) than the uniform color temperature line W3 (point q21 in FIG. 9). The illumination light of the illumination color is emitted.

[Comparative Example 22]
The illumination device 1 of the comparative example 22 emits illumination light of the illumination color at the point (0.392, 0.378) (point q22 in FIG. 9) on the equal deviation line V1 having a correlated color temperature higher than the color matching temperature line W3. Exit.

[Comparative Example 23]
The illuminating device 1 of the comparative example 23 emits the illumination light of the illumination color of the point (0.389, 0.367) (point q23 of FIG. 9) whose correlation color temperature is higher than the point D.

[Comparative Example 24]
The illumination device 1 of Comparative Example 24 emits illumination light of the illumination color of the point (0.375, 0.325) (point q24 in FIG. 9) on the equal deviation line V2 having a correlated color temperature higher than that of the point G.

[Comparative Example 25]
The illumination device 1 of the comparative example 25 is far from the black body radiation locus V0 than the equal deviation line V2, and has a correlated color temperature higher than the color matching temperature line W3 (0.372, 0.315) (point q25 in FIG. 9). The illumination light of the illumination color is emitted.

  The following experiment was conducted on each of the above Examples and Comparative Examples. In the first experiment, a total of 32 subjects, 16 males and 16 females who were 20 to 65 years old, were selected as subjects, and drowsiness, discomfort and feeling of relaxation were evaluated. Specifically, the subjects were divided into two groups, and the evaluation was performed after irradiating the subjects with illumination light by changing the illumination color in the same room. And it compared with the case where daytime white was irradiated similarly. The correlated color temperature of daylight white is about 5000K, and the chromaticity coordinates are (0.345, 0.342) (point q0 in FIG. 9).

  As an evaluation method, VAS (Visual Analogue Scale) used when evaluating the intensity of sensations / feelings was used. In this evaluation method, on one straight line representing the worst sense at one end and the best sense at the other end, a mark is applied to the point adapted to the strength of the sense and emotion regarding the question item felt by the subject at that time. By measuring the length from the position of the sign to one end, the subjective feeling is quantified and scored.

  In the second experiment, a total of 32 subjects, 16 men and 16 women who were 20 to 65 years old, were selected as subjects, and the quality of sleep was evaluated. Specifically, the sleep state after irradiating each room with the illumination light of each illumination color from 1 hour before bedtime to bedtime at an equivalent of 35 W (about 45 lx), with the subjects waiting in each room and having all the subjects in the same environmental state Was measured. And similarly, it compared with the sleep state at the time of irradiating lunch white by equivalent to 35W (about 85 lx).

  For the measurement of the sleep state, a sleep measurement system “Sleep SCAN (registered trademark)” manufactured by Paramount Bed Co., Ltd. was used. A sleep measurement system was placed under the bed to measure the amount of activity of each subject sleeping, and the sleep latency, sleep efficiency, and total sleep time of each subject were calculated from the amount of activity.

  In the third experiment, the working efficiency was evaluated using 16 healthy men and 16 men and 16 women who were 20 years old and 65 years old or less. Specifically, the subjects were put on standby for each room, and the environmental conditions of all subjects were the same, and the subjectivity and work efficiency after irradiating the illumination light of each illumination color for 30 minutes during the work time were evaluated. In each illumination color, an experiment corresponding to 85 W (about 500 lx) and 100 W (about 600 lx) was performed. And it compared with the evaluation at the time of irradiating each day white by 85W equivalency (about 650 lx).

  As a subjective evaluation regarding work, a question item of “motivation” was provided, and the subjective after 30 minutes of work was evaluated by the VAS described above. As the work load, “Uchida-Kraepelin Test (registered trademark)” of the Japan Institute of Psychiatric Technology was used. The content of the inspection is a calculation workload for performing a simple one-digit addition every 30 minutes while changing the line every minute. In addition, the work efficiency was measured by the total amount of calculations for 30 minutes.

  Tables 1 and 2 show the results of the first to third experiments of each example and each comparative example. As an evaluation of the results, the results of all the subjects were statistically analyzed, and a significant difference test was performed between each lighting color and daytime white. The t-test was used as the test method, and the evaluation was evaluated as “improvement” or “deterioration” with a significance level of 5%. In addition, the significance probability of less than 10% was evaluated as “increase tendency” or “deterioration tendency” with a difference.

  According to the results of the first experiment and the second experiment, in the case of the illumination color of the first region S1, sleepiness and a feeling of relaxation are improved as compared with lunch white, sleep on latency is improved (shortened) and sleep is performed. Efficiency and sleep time will improve or tend to improve. In the case of illumination colors outside the range of the first region S1, drowsiness, sleep onset latency, sleep efficiency, and sleep time are equivalent as compared with daytime white. Moreover, when the deviation with respect to the blackbody radiation locus V0 became large (Comparative Examples 5, 7, 9, 13, and 15), the unpleasant sensation tended to deteriorate as compared with daylight white. In addition, when the deviation from the blackbody radiation locus V0 is small (Comparative Examples 6, 8, 12, and 14), the feeling of relaxation tends to be improved as compared to daytime white, but sleepiness and sleep efficiency are the same.

  Therefore, by performing illumination with the illumination color of the first region S1 before going to bed, it can be expected that sleep onset latency at the time of going to bed is shortened and sleep efficiency is improved. In particular, according to Example 5, a significant improvement is observed in sleep latency, sleep efficiency, and sleep time, and a great improvement in sleep efficiency can be greatly expected. In addition, by performing illumination with the illumination color of the first region S1 during a break or during a group meeting, there is no discomfort and relaxation can be brought about.

  According to the result of the third experiment, the illumination color of the second region S2 is equivalent to 85 W, that is, the motivation and work efficiency are equivalent to the day white when the day white is equal to the light energy output from the light source. In the case where the illumination color of the second region S2 is equivalent to 100 W, that is, when the daytime white is equivalent to the illuminance on the desk, the motivation and work efficiency tend to be improved or improved as compared with the daytime white.

  In the case of illumination colors outside the range of the second region S2, motivation and work efficiency are not improved as compared with daytime white at 85W and 100W. Generally, the setting of illumination conditions during work is based on the illuminance on the desk rather than the light energy output from the light source (see, for example, JIS-Z-8516). Considering this, it can be expected that the motivation for the work is improved and the work efficiency is improved by performing illumination with the illumination color of the second region S2 during the work.

  In particular, according to Example 17, since the work efficiency is significantly improved, it can be greatly expected to improve the work efficiency. As for the subjectivity of motivation, it is generally known that motivation decreases as fatigue increases. Therefore, the improvement in motivation in this experiment is thought to be due to the reduction of fatigue during work by suppressing the advancement of the sympathetic nervous system due to the work load.

  Here, in the article "Visual Sensitivities to Color Differenced in Daylight" by DAVID L. MACADAM published in "Journal of the OPTICAL SOCIETY of AMERCA (Volume 32, NUMBER 5)" (issued in May 1942) When a certain point on the chromaticity diagram derived from the color experiment is selected, a range that cannot be distinguished from that color has been announced. It is announced that this range becomes an ellipse when the standard deviation of the discriminating variation with respect to a specific central color is represented in the xy chromaticity diagram, and is also called a MacAdam ellipse 1-Step.

  Industrially, the 5-step of IEC (International Electrotechnical Commission) and the 7-Step of ANSI (American National Standards Institute) are recognized as “color matching” as standards for the MacAdam ellipse 1-Step. It is allowed to do. The Macadam ellipse 5-Step has a relationship that the length of each of the short side and the long side of the ellipse is five times that of the Macadam ellipse 1-Step.

  For more information on Macadam of “IEC 5-Step”, see “The International Electrotechnical Commission” in the middle of the website (IEC) standard (IEC 2002) specifies six, 5-step MacAdam ellipses as color consistency criteria for double-capped fluorescent lamps. ”And is recognized by the International Electrotechnical Commission (IEC) standard (IEC 2002) Have been described.

  “ANSI 7-Step” McAdam is represented on page 14 of the American National Standard for electric lamps-Specifications for the Chromaticity of Solid State Lighting Products (ANSI_NEMA_ANSLG C78.377-2008) by the American National Standards Institute. FIG. A1, which is a graph of the specifications of the SSL product, is shown.

  For this reason, the illumination color of the first region S1 is a color matching range S10 represented by a Macadam ellipse 5-step centered at a point J (0.499, 0.382) (point p5 in FIG. 9) in FIG. It may be the color to which the image belongs (see FIG. 5). Alternatively, the color may belong to a color matching range represented by the MacAdam ellipse 1-step centered at the point J.

  Further, the illumination color of the second region S2 is a color matching range S20 (FIG. 5) represented by a MacAdam ellipse 5-step centered at a point K (0.416, 0.377) in FIG. 5 (point p17 in FIG. 9). 5)). Alternatively, the color may belong to a color matching range represented by the MacAdam ellipse 1-step centering on the point K.

  INDUSTRIAL APPLICABILITY According to the present invention, it can be used for lighting devices such as lighting fixtures and light bulbs that illuminate a living room.

DESCRIPTION OF SYMBOLS 1 Main body 2 Light source board 3 Reflector 4 Frame 5 Illumination control part 6a White LED element 6b Light bulb color LED element 6c Red LED element 50 Remote controller 51 Display part 52 Operation part 53 Illumination key 54 Unlit key 55 Cross key 56 First illumination mode Key 57 Second illumination mode key 58 Variable key 100 Illumination device

Claims (13)

Illumination of a color belonging to a uniform color range represented by a 5-step madam dam ellipse centered on a point (0.499, 0.382) on the xy chromaticity diagram defined by the International Commission on Illumination by light emitted from the LED element A first illumination mode for emitting colored illumination light;
An equal deviation line for the isochromatic temperature line and the blackbody radiation locus passing through the point B (0.419, 0.343) , and an equal deviation line for the blackbody radiation locus passing through the point C (0.418, 0.390) , Illumination between yellow-red and yellowish white in the second region surrounded by a color matching temperature line passing through point D (0.397, 0.370) and a straight line connecting point C and point D A second illumination mode for emitting illumination light of an illumination color between a color or orange pink and light pink;
Provided with an operation unit capable of selecting the first illumination mode and the second illumination mode. The illumination color of the first illumination mode is a color belonging to a uniform color range represented by a Magdam ellipse 1- step centered on a point (0.499, 0.382) on the xy chromaticity diagram. The lighting device according to claim 1. The illumination color in the second illumination mode is a color belonging to a uniform color range represented by a Magdam ellipse 5- step centered on a point (0.416, 0.377) on the xy chromaticity diagram. The lighting device according to claim 1 or 2 . The illumination color in the second illumination mode is a color belonging to a uniform color range represented by a Magdam ellipse 1- step centered on a point (0.416, 0.377) on the xy chromaticity diagram. The lighting device according to claim 1 or 2 . The illumination device according to any one of claims 1 to 4 , further comprising a cold-color illumination mode for emitting daylight color, daylight white, or white illumination light . The operation unit includes a first operation switch for selecting a first illumination mode, a second operation switch for selecting a second illumination mode, and a switch for realizing an illumination color of the cold color illumination mode. The lighting device according to claim 5 . The illumination color is variable in the first area and the second area, and the operation unit realizes the variable switch for changing the illumination color to the color in the first area and the second area, and the illumination color in the cold color illumination mode. the lighting device according to claim 5, characterized in that it comprises a switch, a to. Only a first illumination mode and a second illumination mode having different illumination colors are provided, and the operation unit includes a first operation switch for selecting the first illumination mode and a second operation switch for selecting the second illumination mode. The lighting device according to any one of claims 1 to 4, wherein the lighting device is characterized. Only the first illumination mode and the second illumination mode having different illumination colors are provided, the illumination color is variable in the first region and the second region, and the operation unit has a variable switch that varies the illumination color. The illumination device according to any one of claims 1 to 4 . The lighting device according to any one of claims 1 to 9 , wherein a plurality of the LED elements are provided, and each of the LED elements emits light in a different color . The lighting device according to claim 10 , comprising the LED element that emits a light bulb color, the LED element that emits red light, and the LED element that emits white light . The illuminating device according to claim 10 or 11 , further comprising a phosphor that converts light emitted from the LED element to a different wavelength . The LED element that emits blue light, the phosphor that converts blue light into light bulb color light, the phosphor that converts blue light into red light, and the phosphor that converts blue light into yellow light. the lighting device according to claim 12, characterized in that it comprises.

Images