TWI617772B - Illumination apparatus - Google Patents

Abstract

A lighting appliance capable of uniformizing light on a light emitting surface. The lighting fixture includes a substrate, a plurality of first white light sources, a plurality of second white light sources, a plurality of color light sources, and a light distribution control unit. A plurality of first white light sources are mounted on the substrate, and are arranged across the first row in the circumferential direction of the substrate. The plurality of second white light sources are mounted on the substrate, and are arranged on the outer side of the first row and in the second row along the circumferential direction of the substrate. The color light source is mounted on the substrate, and is arranged across the third row along the circumferential direction of the substrate between the first row and the second row. The light distribution control unit covers the first white light source, the second white light source, and the color light source. The light distribution control unit includes a lens unit that controls light distribution of the first white light source, light distribution of the second white light source, and light distribution of the color light source.

Description

Lighting appliances

An embodiment of the present invention relates to a lighting fixture.

For example, the development of lighting equipment using light emitting elements such as light emitting diodes (Light Emitting Diodes) as light sources is being promoted. Examples of the lighting fixture using a light emitting diode as a light source include a ceiling lamp mounted on a ceiling of a house or the like. In such a lighting fixture, it is desirable not only to simply illuminate the surroundings, but also to present an appropriate light space in accordance with a living scene as the lifestyle is diversified. For example, it is desirable to make the light uniform on the light emitting surface of the lighting fixture.

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2012-252899

Embodiments of the present invention provide a method for achieving uniformity of light on a light emitting surface. Lighting fixtures.

According to an embodiment, there is provided a lighting fixture including a substrate, a plurality of first white light sources, a plurality of second white light sources, a plurality of color light sources, and a light distribution control unit. The plurality of first white light sources are mounted on the substrate, and are arranged across a first row along a circumferential direction of the substrate. The plurality of second white light sources are mounted on the substrate, and are disposed on a second row in a circumferential direction of the substrate, which is located outside the first row and in a circumferential direction of the substrate. The color light source is mounted on the substrate, and is disposed across the third row along the circumferential direction of the substrate between the first row and the second row. The light distribution control unit covers the first white light source, the second white light source, and the color light source. The light distribution control unit includes a lens unit that controls light distribution of the first white light source, light distribution of the second white light source, and light distribution of the color light source.

According to the embodiment of the present invention, it is possible to provide a lighting fixture capable of uniformizing light on a light emitting surface.

100‧‧‧lighting appliances

110‧‧‧Power Department

110a‧‧‧upper surface

111‧‧‧ Fitting section

113‧‧‧Adapter guide

115‧‧‧Control Department

115a‧‧‧Setting information input / output section

115b‧‧‧Dimming control mechanism

115c‧‧‧Storage

116‧‧‧Circuit Parts

117a‧‧‧Control circuit

117b‧‧‧Switch control circuit

118a‧‧‧Mode storage department

120‧‧‧Apparatus body

120a‧‧‧ lower surface

121‧‧‧ hole

123‧‧‧ protrusion

125‧‧‧holes

127‧‧‧Remote signal receiving department

130‧‧‧Light source department

131‧‧‧ substrate

131a‧‧‧ lower surface

131b‧‧‧hole

133, 133B, 133D, 133G, 133L, 133R‧‧‧Light-emitting element

135‧‧‧Wire

137‧‧‧Power Supply Department

140‧‧‧light distribution control department

141‧‧‧Lens section

141a‧‧‧Part 1

141b‧‧‧Part 2

141c‧‧‧Part 3

141d‧‧‧Diffusion treatment department

141e‧‧‧ flat

141f‧‧‧Light Diffusion Department

143‧‧‧Claw

145‧‧‧ convex

150‧‧‧ Cover

150a‧‧‧ lower surface

160‧‧‧Indirect light source department

161‧‧‧ substrate

163‧‧‧Light-emitting element

165‧‧‧Cover

180‧‧‧Remote transmitter

180a‧‧‧ cover body

181‧‧‧Gorgeous button

182‧‧‧ "Comfort" button

183‧‧‧ "Theater" button

184‧‧‧ "Sleep assist" button

185‧‧‧ "R" button

186‧‧‧ "G" button

187‧‧‧ "B" button

188‧‧‧ "Close in 30 minutes" button

189‧‧‧ "All Light" button

A1 ~ A3‧‧‧area

A11 ~ A16‧‧‧Arrow

A, B‧‧‧‧Chroma Point

CN‧‧‧ Connector

D1, D2‧‧‧length

S101 ~ S165‧‧‧step

1 (a) and 1 (b) are schematic perspective views showing a lighting fixture according to the embodiment.

FIG. 2 is a schematic exploded view showing a lighting fixture according to the embodiment.

3 (a) and 3 (b) are schematic plan views showing a lighting fixture according to the embodiment; Face view.

4 (a) and 4 (b) are schematic sectional views showing a lighting fixture according to the embodiment.

5 (a) and 5 (b) are schematic cross-sectional views showing a lighting fixture according to the embodiment.

6 (a) to 6 (c) are graphs showing relative spectral distributions of light emitted from the light emitting element according to the embodiment.

7 is a block diagram showing a configuration of a main part of the lighting fixture according to the embodiment.

8 (a) and 8 (b) are schematic plan views showing a remote control transmitter according to the embodiment.

FIG. 9 is a graph showing a relative spectral distribution of light emitted from a light emitting element in a “assist” mode.

FIG. 10 is a graph exemplifying a relationship between a dimming ratio of a light emitting element emitting light of a bulb color and a relative value of a melatonin suppression degree.

11 is an xy chromaticity diagram illustrating an example of control performed by the control unit in the “sleep assistance” mode according to the embodiment.

12 (a) and 12 (b) are relative spectral distributions illustrating another example of control performed by the control unit in the "sleep assistance" mode according to the embodiment.

13 (a) and 13 (b) are xy chromaticity diagrams illustrating an example of control performed by the control unit of the embodiment.

FIG. 14 illustrates another example of control performed by the control unit of the embodiment; Bright L * a * b * color space.

FIG. 15 is a flowchart illustrating a further example of control performed by the control unit according to the embodiment.

16 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

FIG. 17 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

18 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

19 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

Hereinafter, embodiments will be described with reference to the drawings. For the same parts in the drawings, the same numbers are assigned and detailed descriptions thereof are appropriately omitted, and different parts will be described. In addition, the drawings are schematic or conceptual, and the relationship between the thickness and width of each part and the size ratio between parts are not necessarily the same as those in reality. In addition, even when the same parts are shown, the sizes and ratios may be displayed differently based on the drawings.

1 (a) and 1 (b) are schematic perspective views showing a lighting fixture according to the embodiment.

FIG. 2 is a schematic exploded view showing a lighting fixture according to the embodiment.

3 (a) and 3 (b) are schematic plan views showing a lighting fixture according to the embodiment.

FIG. 1 (a) is a schematic perspective view showing a light emitting surface side of a lighting fixture according to an embodiment. FIG. 1 (b) is a schematic perspective view showing the opposite side of the light emitting surface of the lighting fixture according to the embodiment. Fig. 3 (a) is a schematic plan view showing a light emitting surface side of the lighting fixture according to the embodiment. FIG. 3 (b) is a schematic enlarged view of an area A1 shown in FIG. 3 (a).

The lighting fixture of the embodiment is a general household lighting fixture that is mounted on a fixture mounting surface and is used as a hook ceiling body of a wiring fixture. The lighting fixture according to the embodiment illuminates a room by using light emitted from a light source unit having a plurality of light emitting elements mounted on a substrate.

As shown in FIGS. 1 (a) to 3 (b), the lighting fixture 100 according to the embodiment includes a power supply unit 110, an appliance body 120, a light source unit 130, a light distribution control unit 140, and a cover 150.

The cover 150 is, for example, a milky white acrylic resin molded body, and has translucency. The lower surface 150a of the cover 150 forms a light emitting surface.

The outline of the lighting fixture 100 shown in FIGS. 1 (a) to 3 (b) is circular, but it is not limited to this. For example, the external shape of the lighting fixture 100 may be round or square.

The power supply unit 110 includes a chassis obtained by forming a flat plate of a metal material such as a cold-rolled steel plate. The chassis of the power supply unit 110 is formed in a ring shape. Inside the chassis of the power supply section 110, a circuit component 116 (see FIG. 2) including a control section 115 is provided. As shown in FIG. 1 (b), a fitting portion is provided in the center of the upper surface 110a of the power supply portion 110 111. The fitting portion 111 is fitted to, for example, a ceiling lamp base body provided as a connection device (wiring device) on a ceiling of a house, and the device body 120 is fixed to the ceiling. An adapter guide 113 that guides the ceiling lamp body is mounted in the fitting portion 111.

In the present specification, for convenience of explanation, one side of the cover 150 when viewed from the power source section 110 is referred to as "downward", and one side of the power supply section 110 when viewed from the cover 150 is referred to as "upper". The same applies to other constituent elements.

The appliance body 120 is, for example, a chassis formed of a flat plate of a metal material such as a cold-rolled steel plate. A hole 121 passing through the adapter guide 113 is formed in a substantially central portion of the appliance body 120.

The light source unit 130 includes a substrate 131 and a plurality of light emitting elements 133, and is provided separately from the power source unit 110 via a connection portion. The light emitting element 133 is provided on the lower surface 131 a of the substrate 131. The substrate 131 has a structure in which two substantially circular arc-shaped substrates having a predetermined width dimension are connected in succession, and is formed into a substantially annular shape as a whole. That is, the substrate 131 formed into a substantially annular shape as a whole has two divided substrates. The plurality of divided substrates 131 are electrically connected inside the substrate 131 via a wire 135 or the like and using a connector (electrical connection portion) CN. The substrate 131 is fixed to the lower surface 120 a of the appliance body 120. The substrate 131 may include four divided substrates.

By using the divided substrate, thermal contraction can be absorbed by the divided portion of the substrate 131 and deformation of the substrate 131 can be suppressed. In addition, it is preferable to use a substrate divided into a plurality of pieces, but it is also possible to use one substrate that is integrally formed into a substantially annular shape. Further, in A power supply unit 137 is provided on the inner peripheral side of the specific substrate 131. Specifically, the power supply unit 137 is a connector CN. An output line electrically connected to the lighting device is connected to the power supply unit 137 and supplies power to the plurality of light emitting elements 133 via a wiring pattern on the substrate 131.

On the lower surface 131 a of the substrate 131, a member that reflects light emitted from the light emitting element 133 is coated. For example, the lower surface 131a of the substrate 131 is coated with a resin in which titanium oxide or the like is dispersed. By coating the lower surface 131 a of the substrate 131 with a reflective member, it is possible to prevent a decrease in the brightness of the central portion of the fixture body 120.

The substrate 131 includes, for example, an insulating substrate such as glass epoxy, and wiring formed using copper foil. A reflective member is applied to the lower surface 131 a of the substrate 131 except for a portion where the light emitting element 133 is disposed. That is, the substrate 131 has wirings shielded by the reflective member, and electrically connects the plurality of light emitting elements 133.

The light emitting element 133 is a light emitting diode (Light Emitting Diode, LED). The light emitting element 133 is a surface mount type LED package. As shown in FIGS. 3 (a) and 3 (b), the LED package is mounted along the circumferential direction of a plurality of substrates 131 (two in the example of FIG. 3 (a)) in a circle shape. Furthermore, the LED packages are mounted across a plurality of rows (three rows in the example of FIG. 3 (a)) on the circumference of substantially concentric circles having different radii. That is, the LED package is mounted across the inner peripheral side row (first row), the outer peripheral side row (second row), and the middle row (third row) between the inner peripheral side row and the outer peripheral side row.

The LED package includes an LED chip disposed in a cavity formed substantially by ceramic or synthetic resin, and the LED chip is mounted on the LED chip. Light-transmitting resins for molds such as sealed epoxy resins and silicone resins.

In the LED package (first white light source) mounted on the inner peripheral side, a light-emitting element 133L (first light-emitting element) whose light emission color is a bulb color (L) and a light-emitting element whose daylight color (D) is used 133D (second light emitting element). The color temperature of light of daylight color (D) is higher than the color temperature of light of bulb color (L). That is, the light emitting element 133D emits light having a color temperature higher than the color temperature of the light of the bulb color (L). The light emitting elements 133L and 133D are alternately arranged side by side on the circumference at substantially equal intervals. The LED chip is an LED chip that emits blue light. A phosphor is mixed in the translucent resin. In order to emit light of the daylight color system of the bulb color (L) and daylight color (D), as the phosphor, a yellow phosphor that emits yellow-based light having a relationship of complementary color with blue light is used, or A red phosphor used to supplement redness. The mounting form of the LED package (second white light source) in the outer peripheral side row is the same as the mounting form of the LED package in the inner peripheral side row.

In this specification, for convenience of explanation, at least any one of the light-emitting element 133L whose light emission color is a bulb color (L) and the light-emitting element 133D whose light emission color is a daylight color (D) is referred to as a "white light source" or "main light source". In other words, the so-called "white light source" and "main light source" refer to a light source having a chromaticity coordinate within the definition range of the correlated color temperature.

In the LED package mounted in the middle row, a light-emitting element 133R (third light-emitting element) having a light-emitting color of red (R), a light-emitting element 133G (fourth light-emitting element) having a light-emitting color of green (G), and The blue (B) light-emitting element 133B (the fifth light-emitting element). The LED chip of the light emitting element 133R emits red light LED chip. The LED chip of the light-emitting element 133G is an LED chip that emits green light. The LED chip of the light emitting element 133B is an LED chip that emits blue light. These LED chips are sealed with a light-transmitting resin for a mold.

In this specification, for convenience of description, at least any one of the light-emitting element 133R having a light-emitting color of red (R), the light-emitting element 133G having a light-emitting color of green (G), and the light-emitting element 133B having a light-emitting color of blue (B). One is called "color light source" or "secondary light source". In other words, the "color light source" and "sub-light source" are light sources that emit light of a single wavelength or light contained in a narrow wavelength range to a degree represented by light of a single wavelength.

The light-emitting element 133R, the light-emitting element 133G, and the light-emitting element 133B are sequentially arranged at substantially equal intervals on the substantially circumference with the light-emitting element 133R, the light-emitting element 133G, and the light-emitting element 133B.

The details of the wavelength of light emitted by each light emitting element and the correlated color temperature of the light emitted by each light emitting element will be described later.

In addition, the arrangement of the light-emitting elements 133R, 133G, and 133B is not specified and may be in a different order. For example, the light-emitting elements 133G, 133R, and 133B may be arranged in this order. In addition, it is preferable that adjacent light emitting elements emit light of different colors, but they are not particularly limited. As an example, every two light-emitting elements that emit light of the same color may be continuously arranged so that the light-emitting element 133R, the light-emitting element 133R, the light-emitting element 133G, the light-emitting element 133G, the light-emitting element 133B, and the light-emitting element 133B emit light of the same color.

According to the embodiment, a plurality of light emitting elements having different light emission colors are arranged. 133, that is, a light-emitting element 133L that emits light of the bulb color (L), a light-emitting element 133D that emits light of the daylight color (D), a light-emitting element 133R that emits light of red (R), and a light-emitting element that emits green (G) A light-emitting element 133G and a light-emitting element 133B that emits blue (B) light. Thus, by mixing the lights of the respective colors, the range of light colors that can be expressed can be expanded. In addition, by individually controlling the output of light emitted from each light-emitting element, the light color can be appropriately toned. In the description of the present application, for convenience of explanation, light obtained by mixing lights of respective colors at a predetermined ratio is referred to as “mixed light”.

The light distribution control unit 140 controls the light distribution of the light emitting element 133. The light distribution control unit 140 will be further described with reference to the drawings.

4 (a) and 4 (b) are schematic sectional views showing a lighting fixture according to the embodiment.

5 (a) and 5 (b) are schematic cross-sectional views showing a lighting fixture according to the embodiment.

Fig. 4 (a) is a schematic sectional view of a cut section A-A shown in Fig. 3 (a). Fig. 4 (b) is a schematic sectional view of a cut section B-B shown in Fig. 3 (a). Fig. 5 (a) is a schematic sectional view of a cut section C-C shown in Fig. 3 (a). Fig. 5 (b) is a schematic sectional view of a cut section D-D shown in Fig. 3 (a).

As shown in FIG. 4 (a), the light distribution control unit 140 is fixed to the appliance body 120 and covers the electrical connection portion and the power supply portion between the light emitting element 133 and the plurality of divided substrates 131. The material of the light distribution control unit 140 includes, for example, resin. The light distribution control section 140 covers the entire light source section (charging section) 130. Therefore, the light distribution control unit 140 has a function of protecting the light source unit 130. In addition, on the inner peripheral side of the light distribution control unit 140, A convex portion 145 corresponding to the electrical connection portion and the power supply portion of the substrate 131 is formed. The convex portion 145 is formed in a circular direction, that is, in a circumferential direction, and has a size longer than that of the connector. That is, the light distribution control unit 140 is structured to be attached to and detached from the appliance body 120 by rotation. Therefore, the light distribution control unit 140 has a ratio in the circumferential direction so as not to interfere with the electrical connection portion CN and the electric wire 135 when the light distribution control unit 140 is rotated. The connector has a long convex portion 145.

The light distribution control unit 140 includes a lens unit 141. The lens portion 141 includes a first portion 141a, a second portion 141b, and a third portion 141c. Further, the substrate 131 is between the first portion 141a and the third portion 141c, between the second portion 141b and the third portion 141c, on the inner peripheral side of the first portion 141a, and on the outer peripheral side of the second portion 141b. A light-diffusion part 141f is formed in the corresponding closed-end part 141e. The light diffusion part 141f is formed by applying an uneven pattern, for example. The light diffusion portion 141f may be formed by another method such as a sticking diffusion sheet. The first portion 141a covers the light-emitting elements 133 of the column on the inner peripheral side (the light-emitting elements 133L and 133D in the example of FIG. 4 (b)) and controls the light distribution of the light-emitting elements 133 of the inner-peripheral column. The second part 141b covers the light-emitting elements 133 (the light-emitting elements 133R, 133G, and 133B in the example of FIG. 4 (b) in the middle row) and controls the light distribution of the light-emitting elements 133 in the middle row. The third portion 141c covers the light emitting elements 133 (the light emitting elements 133L and 133D in the example of FIG. 4 (b)) of the outer peripheral row and controls the light distribution of the light emitting elements 133 of the outer peripheral row. That is, the light distribution control unit 140 of the embodiment independently controls the light distribution of the light emitting elements 133 arranged in each column for each column.

This can reduce the color on the lower surface (light emitting surface) 150a of the cover 150. Uneven color and uneven brightness make the chromaticity and brightness uniform.

Here, when the light-emitting element 133 in the outer peripheral row and the light-emitting element 133 in the inner peripheral row are set to non-lighting, and only the light-emitting element 133 in the middle row is set to light, the shape of the lens portion 141 is determined. Sometimes, bright lines may be generated on the lower surface 150a of the cover 150. More specifically, if, for example, arrows A11 and A12 shown in FIG. 4 (b), light emitted from the light-emitting element 133 in the middle row is transmitted through the second portion 141b, and is incident on the first portion 141a and the third portion At least any one of 141 c may cause a bright line on the lower surface 150 a of the cover 150.

On the other hand, a diffusion processing unit 141d is provided on the surface of the second portion of the lens unit 141 of the embodiment. For example, on the surface of the second portion 141b of the lens portion 141, a dot-shaped scatterer, a so-called grain pattern, is formed. In addition, a part of the light incident from the light-emitting element 133 to the lens portion 141, that is, the light reflected by the exit surface and directed to the flat portion on the back side of the lens portion 141 is emitted to the flat portion 141 e of the light distribution control portion 140. . It is assumed that when the light diffusion portion 141f is not formed, light is reflected by the flat portion 141e of the light distribution control portion 140, and the reflected light is emitted from the lens portion 141. As a result, a bright line is generated, and the bright line is reflected on the cover 150, so that the cover 150 has uneven brightness. On the other hand, by forming a light diffusion portion 141f on the flat portion 141e of the light distribution control unit 140, light emitted to the flat portion 141e is diffused by the light diffusion portion 141f. Therefore, bright lines with strong luminosity from the lens portion 141 are not generated, and unevenness in brightness of the cover 150 can be suppressed.

As a result, as shown by arrows A13 and A14 shown in FIG. 4 (b), the light that has passed through the second portion 141b passes through the surface of the second portion 141b by the diffusion processing portion 141d. And spread. This can reduce the amount of light incident on the first portion 141a and the third portion 141c. Therefore, generation of bright lines on the lower surface 150 a of the cover 150 can be suppressed. On the other hand, the surface of the first portion 141a and the surface of the third portion 141c are not provided with a diffusion treatment portion. Therefore, it is possible to suppress a decrease in the amount of light beam of the lighting fixture 100. In addition, when the distance between the cover 150 and the lens portion 141 is reduced for thickness reduction or the like, the generation of bright lines may not be suppressed even if the light diffusion portion 141f is formed. At this time, the incident surface of the lens portion 141 may be subjected to a diffusion treatment.

As described above with reference to FIG. 2, the substrate 131 is fixed to the lower surface 120 a of the appliance body 120. As shown in FIG. 5 (a), the substrate 131 has a hole 131b. On the other hand, the lower surface 120 a of the appliance body 120 is provided with a protruding portion 123 protruding downward (on the light emitting surface side). When the substrate 131 is mounted on the lower surface 120a of the appliance body 120, first, the holes 131b of the substrate 131 are aligned with the positions of the protrusions 123 of the appliance body 120, and the protrusions 123 of the appliance body 120 are inserted into the Inside the hole 131b. Accordingly, the substrate 131 can be temporarily fixed or temporarily placed on the lower surface 120 a of the appliance body 120.

As described above, the light distribution control unit 140 is fixed to the appliance body 120. As shown in FIG. 5 (b), the light distribution control unit 140 includes a claw portion 143. The claw portion 143 has a hook shape. The front end portion of the claw portion 143 extends in a direction substantially parallel to the lower surface 120 a of the appliance body 120. On the other hand, the appliance body 120 has a hole 125. The length D1 of the hole 125 is longer than the length D2 of the front end portion of the claw portion 143. When the light distribution control unit 140 is mounted on the instrument body 120, first, the hole 125 of the instrument body 120 is aligned with the position of the claw portion 143, and the claw portion 143 is inserted into the hole 125 of the instrument body 120 Inside. Next, the light distribution control unit 140 is rotated in the direction of the arrow A16 shown in FIG. 4 (a). Accordingly, the light distribution control unit 140 is fixed to the appliance body 120. More specifically, each claw portion 143 is hooked on the back side of the appliance body 120 and pulls the light distribution control unit 140 toward the appliance body 120. Thereby, the fixture body 120 and the light distribution control unit 140 are fitted with the substrate 131 sandwiched between the fixture body 120 and the light distribution control unit 140.

6 (a) to 6 (c) are graphs showing relative spectral distributions of light emitted from the light emitting element according to the embodiment.

FIG. 6A is a graph exemplifying the relative spectral distribution of the light-emitting element 133L that emits light of a bulb color (L). FIG. 6 (b) is a graph illustrating a relative spectral distribution of the light-emitting element 133G that emits green (G) light. FIG. 6 (c) is a graph exemplifying the relative spectral distribution of the light-emitting element 133R that emits red (R) light.

The horizontal axis of the graphs shown in FIGS. 6 (a) to 6 (b) represents the wavelength (nanometer: nm). The vertical axis of the graphs shown in FIGS. 6 (a) to 6 (b) represents relative energy.

As shown in FIG. 6 (a), the light-emitting element 133L that emits light of the bulb color (L) has a peak wavelength in a range of 550 nm or more and 650 nm or less. The correlated color temperature of the light of the bulb color (L) emitted from the light-emitting element 133L is 2000 kelvin (K) or more and 3500 K or less.

As shown in FIG. 6 (b), the light-emitting element 133G that emits green (G) light has a peak wave in a range of 500 nm or more and 560 nm or less. long.

As shown in FIG. 6 (c), the light-emitting element 133R that emits red (R) light has a peak wavelength in a range of 600 nm or more. More specifically, the light-emitting element 133R that emits red (R) light has a peak wavelength in a range of 620 nm or more and 640 nm or less.

The light-emitting element 133D that emits light of daylight color (D) has a peak wavelength in a range of 440 nm or more and 480 nm or less.

The light-emitting element 133B that emits blue (B) light has a peak wavelength in a range of 440 nm to 480 nm.

FIG. 7 is a block diagram showing a configuration of a main part of the lighting fixture according to the embodiment.

8 (a) and 8 (b) are schematic plan views showing a remote control transmitter according to the embodiment.

The lighting fixture 100 shown in FIG. 7 includes a power source section 110, a light source section 130, an indirect light source section 160, and a control section 115. The power supply section 110 is connected to a commercial AC power supply AC. The light source section 130 is connected to the power supply section 110.

The power supply unit 110 functions as a DC power source, and generates a DC output when a commercial AC power source AC is applied. The light source unit 130 is the same as described above with reference to FIGS. 1 (a) to 6 (c).

As shown in FIG. 1 (b), the indirect light source unit 160 is disposed on the back side (upper side) of the appliance body 120 and mainly has a function of illuminating the ceiling. A plurality of indirect light source portions 160 are provided around the fitting portion 111, and the indirect light source portion 160 includes a substrate 161. With multiple light emitting elements 163. The substrate 161 is formed as a substantially rectangular flat plate, for example. The light emitting elements 163 are arranged in a substantially straight line along the length direction of the substrate 161 and are mounted on the substrate 161. The light emitting element 163 emits light of a bulb color (L).

The indirect light source unit 160 is mounted at four locations on the upper side wall of the power source unit 110. More specifically, as shown in FIG. 1 (b), the upper portion of the power supply section 110 is formed in a substantially quadrangular shape. The indirect light source portion 160 is mounted on a side wall of an upper portion of the power source portion 110 having a substantially quadrangular shape. The indirect light source units 160 mounted at the four locations are covered with a cover 165, respectively.

The control unit 115 includes a setting information input / output unit 115a, a dimming control mechanism 115b, and a storage mechanism 115c. The dimming control mechanism 115b is connected to the setting information input / output unit 115a. The storage mechanism 115c is connected to the setting information input / output unit 115a. The remote control signal receiving section 127 is connected to the setting information input / output section 115a. The storage mechanism 115c is provided with a pattern storage unit 118a.

The dimming control mechanism 115b is provided with a pulse width modulation (PWM) control circuit 117a and a switching control circuit 117b. The switch control circuit 117b is connected to the PWM control circuit 117a. As shown in FIG. 7, the light-emitting element 133L that emits light of the bulb color (L), the light-emitting element 133D that emits light of the daylight color (D), the light-emitting element 133R that emits light of red (R), and the green (G) ), A light-emitting element 133G of light), a light-emitting element 133B that emits blue (B) light, and a light-emitting element 163 of the indirect light source unit 160 are provided with a PWM control circuit 117a and a switch control circuit 117b, respectively. That is, six PWM control circuits 117a and six switch control circuits 117b are provided.

Accordingly, the light source unit 130 and the indirect light source unit 160 can be controlled independently. Furthermore, dimming control (individual control) can be performed for each emission color. Therefore, regarding the light source unit 130, the dimming ratio of each light emitting color can be adjusted so that the light output of each light emitting color is variable, and the light bulb color (L), daylight color (D), red (R), and green can be changed. The emission colors of (G) and blue (B) are mixed to reflect a desired emission color (individual control mode). For example, by operating at least one of the "R" button 185, the "G" button 186, and the "B" button 187 of the remote control transmitter 180, it is possible to adjust the dimming of each light emission color. The ratio is adjusted to change the light output of each luminescent color. In the remote control transmitter 180 shown in FIGS. 8 (a) and 8 (b), the "R" button 185, "G" button 186, and "B" button 187 are hidden by the cover body 180a in the normal state, and the other On the other hand, if the user slides the cover body 180a, these buttons will be exposed to the outside.

In the lighting fixture 100 according to the embodiment, in order to present a light space according to a living scene, a desired mode may be selected from a plurality of lighting modes and switched. More specifically, in the light emitting element 133 and the light emitting element 163, a plurality of mode setting information (lighting pattern information) whose light output is adjusted for each light emission color is stored in the mode storage unit 118a. The user can use the remote control transmitter 180 to select the lighting pattern stored in the pattern storage part 118a and reproduce the lighting pattern.

For example, a "bright" mode, a "comfort" mode, a "theater" mode, and a "sleep assistance" mode (first lighting mode) are set.

"Gorgeous" mode mixes the color of light bulb (L), daylight (D), red (R), green (G), and blue (B), reflecting the high color reproducibility and The light of the daylight color system with excellent color rendering makes the colors of the dining table look bright and gorgeous. The average color rendering index (Ra) of the mixed light in the "bright" mode is, for example, "95". For example, the user can select to execute the "gorgeous" mode by pressing the "gorgeous" button 181 of the remote control transmitter 180.

The "comfort" mode uses a combination of light with the light bulb color (L) of the light source unit 130 facing downward and light with the light bulb color (L) of the indirect light source unit 160 facing upward to illuminate the entire space (L ) Soft light, so as to present a comfortable space with a sense of relaxation. For example, the user can select to execute the "comfort" mode by pressing the "comfort" button 182 of the remote control transmitter 180.

In the "theater" mode, lighting is performed using only the upward light of the bulb color (L) of the indirect light source portion 160. The "Theater" mode illuminates the ceiling and presents the feeling of being in a movie theater, creating a light space for enjoying a home theater. For example, the user can select to execute the "Theater" mode by pressing the "Theater" button 183 of the remote control transmitter 180.

In the "sleep assistance" mode, the light-emitting element 133D that emits light in the daylight color (D) and the light-emitting element 133B that emits light in the blue color (B) are turned off, and the bulb colors (L), red (R), and The green (G) emission color is mixed. "Sleep assist" mode can achieve light with relatively low melatonin suppression, which can reduce the adverse effects of nighttime lighting on sleep, thereby promoting users to fall asleep. The average color rendering index (Ra) of the mixed light in the "sleep assistance" mode is relatively high, and is higher than the average color rendering of the light of the bulb color (L), the red (R) light, and the green (G) light Index (Ra). Mixing of the light-emitting colors (L), red (R), and green (G) in Sleep Assist mode The correlated color temperature of the resulting light (mixed light) is lower than the correlated color temperature of the light of the bulb color (L). For example, the user can select to execute the “sleep assistance” mode by pressing the “sleep assistance” button 184 of the remote control transmitter 180.

When the lighting mode set as described above is reproduced, the user operates the remote control transmitter 180 to select a specific mode. When the remote control signal receiving section 127 receives the mode selection signal, the received signal is transmitted to the setting information input / output section 115a. The setting information input / output section 115a reads the selected mode setting information (lighting pattern information) from the mode storage section 118a, and sends it to the dimming control mechanism 115b.

The PWM control circuit 117a in the dimming control mechanism 115b generates a PWM control signal based on the mode setting information and sends it to the switch control circuit 117b. The switch control circuit 117 b performs PWM control based on the PWM control signal, and supplies a direct-current output from the power supply section 110 to each light-emitting element 133 of the light source section 130 and the light-emitting element 163 of the indirect light source section 160. Accordingly, each light-emitting color of the light-emitting elements 133 and 163 of each color is controlled in accordance with the dimming ratio corresponding to the mode setting information, and the light is emitted in accordance with a predetermined light-mixing ratio, and the light-emitting color that has been mixed as a whole is reflected.

The "sleep assistance" mode is further described with reference to the drawings.

FIG. 9 is a graph showing a relative spectral distribution of light emitted from a light emitting element in a “sleep assistance” mode.

The horizontal axis of the graph shown in FIG. 9 represents the wavelength (nano: nm). The vertical axis of the graph shown in FIG. 9 represents relative energy. The relative spectral distribution shown in FIG. 9 indicates that the light-emitting element 133L that emits light of the bulb color (L), and emits red (R) light An example in which the light emitting element 133R and the light emitting element 133G emitting green (G) light are mixed at a ratio of "0.83: 0.12: 0.05".

The spectral distribution of the mixed light emitted in the "sleep assistance" mode has a peak of energy in a wavelength range of 600 nm or more and 650 nm or less. In the relative spectral distribution shown in FIG. 9, there is a peak of energy when the wavelength is 635 nm.

If the maximum value of the energy of the spectral distribution is set to "1", the peak value of the energy of the mixed light emitted in the "sleep assistance" mode in a wavelength range of 380 nm or more and 500 nm or less is 0.25 or less. In the relative spectral distribution shown in FIG. 9, the relative energy of the peak value in a wavelength range of 380 nm or more and 500 nm or less is “0.2”. If the maximum value of the energy of the spectral distribution is set to "1", the peak value of the energy of the mixed light emitted in the "sleep assistance" mode in a wavelength range of 530 nm or more and 600 nm or less is 0.25, Less than or equal to 0.6. In the relative spectral distribution shown in FIG. 9, the relative energy of the peak value in the wavelength range of 530 nm or more and 600 nm or less is “0.48”.

The average color rendering index (Ra) of the light bulb color (L) emitted from the light emitting element 133L was "84". The average color rendering index (Ra) of the mixed light of the ratio (0.83: 0.12: 0.05) was "93". That is, compared with the case of emitting light of bulb color (L), the light emitting element 133L emitting light of bulb color (L), the light emitting element 133R emitting light of red (R), and the light emitting element of green (G) are used. The mixed light of the light-emitting element 133G improves the average color rendering index (Ra).

Table 1 illustrates the relationship between the light mixing ratio and the melatonin suppression degree. table.

FIG. 10 is a graph exemplifying a relationship between a dimming ratio of a light emitting element emitting light of a bulb color and a relative value of a melatonin suppression degree.

The mixing ratio (dimming ratio) of the light-emitting element 133L that emits light of bulb color (L), the light-emitting element 133R that emits red (R) light, and the light-emitting element 133G that emits green (G) light, The relationship with melatonin inhibition was studied. Regarding the melatonin suppression degree, Brainard's melatonin action sensitivity curve was set to Brainard (λ) and calculated according to the following formula.

Brainard (λ) × Relative Spectral Distribution / V (λ) × Relative Spectral Distribution ... "V (λ)" in Equation (1) is the standard photopic sensitivity. Further, the melatonin suppression degree when the light-emitting element 133L that emits light of a bulb color (L) is turned on is set to "1", and the melatonin suppression degree at each mixed light ratio is expressed as a relative value. Examples of research results are shown in Table 1.

The inventors have fixed the output of the light-emitting element 133R that emits red (R) light and the light-emitting element 133G that emits green (G) light, In addition, when the light-emitting element 133L that emits light of a bulb color (L) is dimmed, the relationship between the light mixing ratio of the light-emitting element 133L and the relative value of the melatonin suppression degree is studied. The melatonin suppression degree when the light-emitting element 133L that emits light of the bulb color (L) is turned on is set to "1", and the melatonin suppression degree at each mixed light ratio of the light-emitting element 133L is expressed as a relative value. . An example of the results of the study is shown in Figure 10.

According to the table shown in Table 1 and the graph shown in FIG. 10, if the light mixing ratio of the light emitting element 133L that emits light of the bulb color (L) is decreased, the melatonin suppression degree is decreased. Here, the mixed light ratio refers to a ratio of light beams of mixed light.

Therefore, the control unit 115 according to the embodiment performs the following control in the "sleep assistance" mode: after mixing the light emitting colors of the bulb color (L), red (R), and green (G), only the light emitting color (L) is emitted. The light emitting element 133L is dimmed. Next, when the output of the light-emitting element 133L becomes equal to or less than a predetermined value, the control unit 115 performs control for dimming the light-emitting element 133G and the light-emitting element 133R.

If the dimming ratio (light mixing ratio) of the light emitting element 133L that emits light of the bulb color (L) becomes "0.4", the mixed light will be outside the defined region of the correlated color temperature. When the mixed light is outside the defined area of the correlated color temperature, the appearance of the light color may become unnatural. Therefore, it is more preferable that the control unit 115 performs control such that if the light mixing ratio of the light emitting element 133L is reduced to "0.5", the light mixing element 133L, the light mixing element 133G, and the light emitting element are maintained while maintaining the light mixing ratio of the light emitting element 133L. In the case of a mixed light ratio of 133R, that is, while maintaining the light color, the light is turned off, and the light is turned off when going to bed.

According to the embodiment, it is possible to present an appropriate light space according to a living scene. That is, by making the blue light contained in the mixed light in the "sleep assistance" mode effective Relatively reduced scores, and reduced melatonin suppression of indoor personnel, can promote deep sleep. In addition, when the output of the light emitting element 133L is equal to or less than a predetermined value, the light color of the light emitting element 133G and the light emitting element 133R can be reduced, and the color of the uncomfortable feeling can be maintained after reducing the component of the blue light to be lower than the predetermined value. Furthermore, by using the mixed light in the "sleep assistance" mode, light with a relatively high average color rendering index can be provided, and the indoor light color can be maintained as a natural light color.

As described above with reference to Figs. 3 (a) and 3 (b), in the LED package mounted on the inner peripheral row, the light-emitting element 133L having a light-emitting color of a bulb color (L) and a light-emitting color of A daylight color (D) light-emitting element 133D. The mounting form of the LED packages in the outer peripheral row is the same as the mounting form of the LED packages in the inner peripheral row. In the LED package mounted in the middle row, a light emitting element 133R having a light emitting color of red (R), a light emitting element 133G having a light emitting color of green (G), and a light emitting element 133B having a light emitting color of blue (B) are used.

Therefore, in the "sleep assistance" mode, even if the light-emitting element 133D that emits light in daylight color (D) and the light-emitting element 133B that emits light in blue (B) are turned off, the light distribution control unit 140 can Suppresses the hue drop before going out at bedtime. Therefore, it is possible to prevent unevenness in brightness of the light bulb colors (L) of the inner peripheral row, the red (R) and green (G) of the middle row, and the light emitting colors (L) of the outer peripheral row. Downmix.

Next, an example of control performed by the control unit 115 according to the embodiment will be described with reference to the drawings.

FIG. 11 is a diagram illustrating execution of a control unit according to the embodiment in a “sleep assistance” mode; An example of the control is explained in the xy chromaticity diagram.

When the mode is set to the “sleep assistance” mode, the control unit 115 according to the embodiment performs the control to emit the mixed light of the chromaticity point A shown in FIG. 11. The correlated color temperature of the mixed light at the chromaticity point A is, for example, 2200K. The deviation Δuv between the chromaticity point A and the black body radiation locus is, for example, "0". Next, the control unit 115 performs control such that the mixed light of the chromaticity point A changes with time as the mixed light of the chromaticity point B shown in FIG. 11. The coordinates (x, y) of the chromaticity point B are, for example, (0.62, 0.36). The mixed light color of the chromaticity point B is an orange color.

In this way, if it is set to the "sleep assistance" mode, the control unit 115 of the embodiment performs the following control: The first chromaticity point whose deviation Δuv on the xy chromaticity diagram from the black body radiation trajectory is within ± 0.02 can be obtained at Light mixing at the first chromaticity point (first light) reflected at the correlated color temperature. Next, the control unit 115 performs the following control: the mixed light of the first chromaticity point changes to the mixed light of the second chromaticity point (second light) as time passes, and the mixed light of the second chromaticity point is at xy The chromaticity diagram is located in the area A2 of the y-coordinate being greater than or equal to 0.32, less than or equal to 0.45 and the x-coordinate being greater than or equal to 0.51, that is, the area A2 surrounded by the spectral locus.

According to this example, the control unit 115 changes the mixed light of the first chromaticity point to the mixed light of the second chromaticity point, so that the light of low color temperature, which is relatively difficult to prevent sleep, is changed to a relatively low blue light component. Light. For example, the control unit 115 performs the following control: emitting the mixed light of the first chromaticity point 1 hour before bedtime, gradually changing the mixed light of the first chromaticity point to the mixed light of the second chromaticity point 10 minutes before bedtime, and Reduce the brightness and turn off the lights at bedtime. Thus, at the beginning of the "sleep assistance" mode, The chromaticity of light within the defined area of the correlated color temperature can suppress the appearance of inconsistency. In addition, the mixed light at the first chromaticity point is gradually changed to the mixed light at the second chromaticity point in the area A2 where the reddish color is gradually changed from the beginning of the "sleep assistance" mode to the sleep time (bedtime). It does not inhibit the secretion of melatonin, a hormone that promotes sleep, and promotes natural sleep.

12 (a) and 12 (b) are relative spectral distributions illustrating another example of control performed by the control unit in the "sleep assistance" mode according to the embodiment.

FIG. 12A is an example of a relative spectral distribution of light before the control unit 115 changes the light color. FIG. 12 (b) is an example of a relative spectral distribution of light after the control unit 115 changes the light color. The horizontal axis of the graphs shown in Figs. 12 (a) and 12 (b) represents the wavelength (nano: nm). The vertical axis of the graphs shown in Figs. 12 (a) and 12 (b) represents relative energy.

When set to the "sleep assistance" mode, the control unit 115 according to the embodiment performs control to emit the first mixed light (first light) as shown in the relative spectral distribution of FIG. 12 (a). When the maximum value of the energy of the spectral distribution is set to "1", the maximum value of the energy of the first mixed light in a wavelength range of 500 nm or less is 0.25 or less. In the example of the relative spectral distribution shown in FIG. 12 (a), the maximum value of the energy of the first mixed light in a wavelength range of 500 nm or less is “0.14”.

Next, the control unit 115 performs control such that the first mixed light changes to a second mixed light (second light) as shown in the relative spectral distribution of FIG. 12 (b) with time. If the maximum value of the energy of the spectral distribution is set to "1", the maximum value of the energy of the second mixed light in a wavelength range of 500 nm or less is less than or equal to 0.1. In the example of the relative spectral distribution shown in FIG. 12 (b), the maximum value of the energy of the second mixed light in a wavelength range of 500 nm or less is "0.002".

According to this example, the control unit 115 changes the first mixed light to the second mixed light, so that the light having a low color temperature, which is relatively difficult to prevent sleep, is changed to light having a relatively low blue light component. For example, the control unit 115 executes control such that the first mixed light is emitted 1 hour before bedtime, the first mixed light is gradually changed to the second mixed light 10 minutes before bedtime, the brightness is decreased, and the light is turned off at bedtime. Therefore, since the component of blue light contained in the spectral distribution of the first mixed light is a predetermined value or less, it is relatively difficult to suppress the secretion of melatonin. In addition, by changing the first mixed light to the second mixed light from the beginning of the "sleep assistance" mode to the sleep time (bedtime), light with less adverse effects on melatonin suppression can be realized.

13 (a) and 13 (b) are xy chromaticity diagrams illustrating an example of control performed by the control unit of the embodiment.

On the xy chromaticity diagram, the chromaticity coordinates of the light-emitting element 133L that emits light of the bulb color (L), the chromaticity coordinates of the light-emitting element 133D that emits light of the daylight color (D), and the light-emitting element that emits red (R) light The chromaticity coordinates of 133R, the chromaticity coordinates of the light-emitting element 133G emitting green (G) light, and the chromaticity coordinates of the light-emitting element 133B emitting blue (B) light are shown in FIG. 13 (a), for example.

Here, in the process of changing the lighting state from an arbitrary mixing ratio to the lighting state of another mixing ratio, an unnatural color light may be emitted depending on the mixing ratio of each light emitting element. . For example, a case where the first lighting state changes to the second lighting state as shown in FIG. 13 (b) will be described. On the 1st In the lighting state, only the light-emitting element 133B that emits blue (B) light is turned on. In the second lighting state, the light-emitting element 133R that emits red (R) light and the light-emitting element 133L that emits light in a bulb color (L) are turned on. That is, in the second lighting state, mixed light is emitted from the light emitting element 133R and the light emitting element 133L.

When changing from the first lighting state to the second lighting state, if all the dimming of the light-emitting element 133L, the light-emitting element 133R, and the light-emitting element 133B changes at the same time, the light color may pass through, for example, FIG. 13 (b). The high-chroma magenta area such as the area A3 shown. In this way, unnatural colors may be emitted which are not intended by the user.

In this regard, in the embodiment, first, the light-emitting element 133L is turned on from the first lighting state (first control process). Then, the light emitting element 133B is turned off (second control process). That is, the control unit 115 performs control such that when changing from the first lighting state to the second lighting state, each light-emitting element is dimmed with a time difference according to the type of the light-emitting element.

Thereby, in the process of performing the control which changes from the lighting state of an arbitrary mixing ratio to the lighting state of another mixing ratio, emission of light of an unnatural color can be suppressed.

For example, when the control unit 115 changes from a state where only the color light source is turned on to a state where only the white light source is turned on, or changes from a state where only the color light source is turned on to a state where the white light source and the color light source are turned on, Before the control, start the control of the white light source.

For example, the control unit 115 changes from a state in which only the color light source is lit to only When the color light source is turned on in other states, the color light source is controlled after the white light source is turned on, and then the white light source is turned off.

Therefore, since the control of the white light source is started before the control of the color light source, even if the mixed light state of the color light source changes later, the hue can be suppressed from changing in a high-chroma region. Therefore, emission of light of an unnatural color can be suppressed.

For example, when the control unit 115 changes from a state in which the white light source and the color light source are lit to another state in which at least one of the white light source and the color light source is lit, the control of the color light source is started before the control of the white light source. .

For example, when the control unit 115 changes from a state in which only the white light source is turned on to a state in which only the color light source is turned on, the control unit 115 starts the control of the color light source before the control of the white light source.

Accordingly, since the control of the color light source is started before the control of the white light source from the state where the white light source is turned on, it is possible to suppress the hue from changing in a high-chroma region. Therefore, emission of light of an unnatural color can be suppressed.

FIG. 14 is an L * a * b * color space describing another example of control performed by the control unit of the embodiment.

In the L * a * b * color space, the chromaticity coordinates of the light-emitting element 133R that emits red (R) light, the chromaticity coordinates of the light-emitting element 133G that emits green (G) light, and An example of the chromaticity coordinates of the light emitting element 133B is shown in FIG. 14.

As described above with reference to Figures 13 (a) and 13 (b), In the process of changing the lighting state from an arbitrary mixing ratio to the lighting state of another mixing ratio, depending on the mixing ratio of each light emitting element, light of an unnatural color may be emitted. For example, a case where the light emitting element 133R that emits red (R) light is changed from a lighting state to a light emitting element 133B that emits blue (B) light as shown in FIG. 14 will be described.

When the light-emitting element 133R is turned on and the light-emitting element 133B is turned on, if the output of the light-emitting element 133R is gradually reduced and the output of the light-emitting element 133B is gradually increased, the first control process shown in FIG. 14 is performed. As shown, the light color in the L * a * b * color space changes slightly closer to the circumferential side than the straight line formed by the chromaticity coordinates of the light-emitting element 133R and the chromaticity coordinates of the light-emitting element 133B. In this way, in the first control process, the light color will pass through the bright magenta, which may give an unnatural impression to the user.

On the other hand, in the embodiment, in the process of changing from the state in which only the light-emitting element 133R is lit to the state in which only the light-emitting element 133B is lit, the following control is performed: green (G) is added through a second control process. The second control process passes through a region closer to the origin of the L * a * b * color space than the first control process. That is, when the control unit 115 changes from the first lighting state to the second lighting state, the control unit 115 performs the following control: the chromaticity of the L * a * b * color space of the light color presented during the change process is higher than that of the first lighting state The area where the straight line formed by the chromaticity coordinates in the lighting state and the chromaticity coordinates in the second lighting state is closer to the origin.

Therefore, in the process of changing the lighting state, since the light color passes through a region with relatively low chroma, the appearance unnaturalness can be eased. Shown in Figure 14 In the example, in the second control process, the light color changes from red (R) to reddish white and blued white and changes to blue (B). Therefore, an unnatural impression can be suppressed.

15 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

In this example, a description will be given of a case where the "gorgeous" mode, the "comfort" mode, or the "theater" mode is selected.

The user, for example, operates the "bright" button 181 of the remote control transmitter 180 to select the "bright" mode (step S101). Alternatively, the user selects the "comfort" mode by operating the "comfort" button 182 of the remote control transmitter 180 (step S103). Alternatively, the user selects the "theater" mode by operating the "theater" button 183 of the remote control transmitter 180 (step S105).

Next, the control unit 115 determines whether a timer function is set (step S107). The timing function in this example, the so-called "timed shutdown function" for sleep, refers to a function of turning off the light emitting element 133 after a predetermined time. When the timer function is not set (step S107: No), the control unit 115 continues to determine whether the timer function is set (step S107).

On the other hand, when the timer function has been set (step S107: Yes), the control section 115 executes the "sleep assistance" mode. The control performed in the "sleep assistance" mode is, for example, as described above with reference to Figs. 9 to 12 (b). Next, the control unit 115 turns off all the light-emitting elements 133 (step S111). Thus, in the example shown in FIG. 15, when a point other than the "sleep assistance" mode is selected In the light mode, that is, the lighting mode (second lighting mode) in which the light output of each luminous color has been adjusted in advance, if the timer function is set, the control unit 115 performs the following control: The light emitting element 133 is turned off. In other words, when a lighting mode other than the "sleep assistance" mode is selected, that is, a lighting mode in which the light output of each luminous color has been adjusted in advance, if the timing function is set, the control unit 115 performs the following control: Move from the selected lighting mode to "Sleep Assist" mode. This control is different from a control that only dims and turns off the lighting in the "bright" mode, the "comfort" mode, or the "theater" mode.

Thereby, the timer function is operated by passing through the "sleep assistance" mode which does not hinder falling asleep, so that, for example, even when a lighting mode having a wake-up effect (for example, "bright" mode, etc.) is set, falling asleep can be promoted. Therefore, it is possible to provide a light that suppresses an adverse effect on sleep.

16 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

In this example, a description will be given of a case where the "gorgeous" mode, the "comfort" mode, or the "theater" mode is selected.

The user, for example, operates the "beautiful" button 181 of the remote control transmitter 180 to select the "beautiful" mode (step S121). Alternatively, the user selects the "comfort" mode by operating the "comfort" button 182 of the remote control transmitter 180 (step S123). Alternatively, the user selects the "theater" mode by operating the "theater" button 183 of the remote control transmitter 180 (step S125).

In this way, the control unit 115 makes it impossible to perform individual control (step S127). That is, when the lighting mode in which the light output of each light emitting color has been adjusted in advance is selected, the control section 115 disables the function of adjusting the light adjustment ratio of each light emitting color so that the light output of each light emitting color is variable. . As a result, it is possible to suppress a phenomenon in which the effect of a specific toning ratio cannot be obtained. In other words, the setting information of each lighting mode in which the light output of each light-emitting color is adjusted in advance can be maintained.

In addition, when the "Sleep Assist" mode is selected, the dimming of each luminous color can be adjusted within the range of the bulb color (L), red (R), and green (G) lighted in the "Sleep Assist" mode. As a result, the light output of each luminescent color is made variable. That is, in the "sleep assistance" mode, dimming and color adjustment can also be performed in the range of bulb color (L), red (R), and green (G).

Next, the control unit 115 determines whether or not the "all-light" mode has been set (step S129). The “all-light” mode is a mode in which the light output of all the light emitting elements 133 of the bulb color (L) and the daylight color (D) in the light source unit 130 is maximized and the light emitting colors are mixed. In the "full light" mode, light of a daylight color system having high color reproducibility and excellent color rendering properties is reflected. When the "all-light" mode is not set (step S129: No), the control unit 115 continues to determine whether or not it is set to the "all-light" mode (step S129).

On the other hand, for example, when the user operates the "all-light" button 189 of the remote control transmitter 180 (see Figs. 8 (a) and 8 (b)) and sets the "all-light" mode (step S129: Yes). , The control unit 115 releases the state in which the individual control is not possible, and sets it to the individual control (step S131). In addition, the control unit 115 may not only cancel the individual control that is not possible when the mode is set to the "full light" mode. When the selected lighting mode ("Gorgeous" mode, "Comfort" mode, or "Theater" mode) is released, the state where individual control cannot be performed can be released. Thus, the user can, for example, operate the "R" button 185, "G" button 186, and "B" button 187 of the remote control transmitter 180, and adjust the dimming ratio of each luminous color so that the light output of each luminous color variable.

In addition, it is not limited to this example. When the "gorgeous" mode, "comfort" mode, or "theatre" mode is selected, red (R), green (G), and blue can be performed in the range of each lighting mode. Color (B) individual control. This allows fine adjustment of red (R), green (G), and blue (B) within the range of each lighting mode.

Alternatively, when "Fancy" mode, "Comfort" mode, or "Theater" mode is selected, the unused light emission colors in each lighting mode can also be individually controlled. This makes it possible to fine-tune the unused emission color in each lighting mode.

FIG. 17 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

If the user operates the "close after 30 minutes" button 188 (refer to Figs. 8 (a) and 8 (b)) to select the timer function (for example, step S141), the control unit 115 performs the following control: The main light source and the main light source are turned off (step S143). For example, the control unit 115 turns off the light emitting elements 133L and 133D. Next, the control unit 115 performs control to turn off the sub-light source (step S145). For example, the control unit 115 causes the light emitting element 133R, The light element 133G and the light emitting element 133B are turned off.

The timing function is as described above with reference to FIG. 15.

For example, when a mixed light of bulb color (L) light, red (R) light, and green (G) light is emitted, if the user operates the "close in 30 minutes" button 188 of the remote control transmitter 180, for example, to select For the timer function, the control unit 115 first causes the light-emitting element 133L that emits light of the bulb color (L), the light-emitting element 133R that emits red (R) light, and the light-emitting element 133L that emits green (G) light. Off. Next, the control unit 115 turns off the light-emitting element 133R and the light-emitting element 133G.

Therefore, in general, the illuminance of the main light source is higher than that of the sub-light source. Therefore, by reducing the illuminance of the main light source first, the sub-light source with a relatively low illuminance can be turned on before the light is turned off, and the utilization is relatively low. To turn off the light. Therefore, it is possible to provide a light that suppresses an adverse effect on sleep.

18 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

If the user selects the timer function by operating the "close in 30 minutes" button 188 of the remote control transmitter 180 (step S151), the control unit 115 performs control to turn off the auxiliary light source among the main light source and the sub-light source first (step S153) . For example, the control unit 115 turns off the light-emitting element 133R, the light-emitting element 133G, and the light-emitting element 133B. Next, the control unit 115 performs control to turn off the main light source (step S155). For example, the control unit 115 turns off the light emitting elements 133L and 133D.

The timing function is as described above with reference to FIG. 15.

For example, when a mixed light of bulb color (L) light, red (R) light, and green (G) light is emitted, if the user operates the "close in 30 minutes" button 188 of the remote control transmitter 180, for example, to select In the timing function, the control unit 115 causes the light-emitting element 133R and the light-emitting element 133L that emit light of the bulb color (L), the light-emitting element 133R that emits red (R) light, and the light-emitting element 133G that emits green (G) light and The light-emitting element 133G is turned off first. Next, the control unit 115 turns off the light-emitting element 133L.

Therefore, for example, when the correlated color temperature of the mixed light of the red (R) light and the green (G) light brings a sense of incongruity before the light is turned off, the light-emitting element 133R and the light-emitting element 133G are turned off first to eliminate A sense of incongruity before turning off the lights. At this time, a light bulb color (L) can be provided before the lamp is turned off.

19 is a flowchart illustrating still another example of control performed by the control unit according to the embodiment.

In this example, a case where the light-emitting element 133L that emits light of the bulb color (L), the light-emitting element 133R that emits red (R) light, and the light-emitting element 133G that emits green (G) light will be described.

The circuit component 116 provided inside the chassis of the power supply unit 110 includes a sensor (not shown). Examples of the sensor include a human sensor that senses the presence of a person. Examples of the human sensor include a sensor using infrared rays, a sensor using ultrasonic waves, and a sensor using microwaves. In addition, the sensor may be mounted in the appliance body 120.

According to the inventors' knowledge, light colors with relatively low color temperature or correlated color temperature are not likely to hinder drowsiness. Therefore, a light color with a relatively low color temperature or correlated color temperature is more suitable for lighting that has a relatively short time before bedtime or at night. However, in order to achieve a light color with a relatively low color temperature or correlated color temperature, a light emitting element with a relatively low color temperature or correlated color temperature must be used.

In contrast, in the example shown in FIG. 19, when the light-emitting element 133L that emits light of the bulb color (L), the light-emitting element 133R that emits red (R) light, and the light-emitting element 133G that emits green (G) light are in When the light is off (step S161), the control unit 115 determines whether or not the human sensor detects a person (step S163). When the human sense sensor does not sense a person (step S163: No), the control section 115 continues to determine whether the human sense sensor senses a person (step S163).

On the other hand, when the human sensor detects a person (step S163: Yes), the control unit 115 causes the light-emitting element 133L that emits light of the bulb color (L) and the light-emitting element 133R that emits light of the red (R) And the light emitting element 133G that emits green (G) light is turned on, and the correlated color temperature is lower than the correlated color temperature in a state where only the light emitting element 133L is turned on (step S165). For example, when a person senses a person (step S163: Yes), the control section 115 executes a "sleep assistance" mode.

Thereby, the lighting fixture 100 according to the embodiment senses a person and automatically lights up when the work is performed for a relatively short time before going to bed or at night. The correlated color temperature of the lighting light color is lower than the correlated color temperature of the light emitting element 133L that emits light of the bulb color (L). Therefore, it can be realized when the work is relatively short before bedtime or at night. Light color that does not easily interfere with sleepiness. For example, when a user goes to a toilet or the like at night, the user is not prompted to wake up, and the phenomenon that prevents him from going to bed again can be suppressed.

Next, a lighting system including the lighting fixture 100 and the sensing mechanism according to the embodiment will be described.

The lighting system includes the lighting fixture 100 and the sensing mechanism described above with reference to FIGS. 1 (a) to 19. Examples of the sensing means include a human sensor, a biological sensor, an image sensor, and a load sensor. Examples of the human sensor include a sensor using infrared rays, a sensor using ultrasonic waves, and a sensor using microwaves. Examples of the biosensor include sensors that measure biological information such as pulse wave, electrocardiogram, body temperature, body motion, or blood pressure. Examples of the image sensor include a sensor having an image sensor such as a camera, and a sensor that senses the movement of a person or the movement of an eye.

In the lighting system according to the embodiment, the sensor detects the behavior of the occupant before going to bed in the dormitory, and the lighting device 100 is automatically turned off after a predetermined time based on the sensing result of the sensor. For example, if the sensor senses the behavior of the occupant before going to bed, the lighting system starts to turn off the lighting fixture 100 after 5 minutes, and for example, after a time of about 10 minutes to a degree that the occupant would not notice. The lighting fixture 100 is dimmed and automatically turned off. Examples of the “before bedtime action” include an action of a resident entering a bedroom, an action of a resident sitting on a bed, an action of preparing to sleep, an action of feeling sleepy eyes, an action of wearing pajamas, or an action of taking a shower Wait.

As a result, the motion of the occupant before bedtime is sensed by the sensor. As a result, the occupant can make the lighting apparatus 100 automatically turn off the light after a predetermined time without performing a specific operation.

The other lighting system of the embodiment includes the plurality of lighting fixtures 100 described above with reference to FIGS. 1 (a) to 19. Individual control addresses are provided for each of the plurality of lighting fixtures 100. The control unit 115 controls at least one of dimming and color adjustment of the plurality of lighting fixtures 100 with a time difference.

For example, the plurality of lighting fixtures 100 are arranged in a range from the ceiling to the floor. For example, when a plurality of lighting fixtures 100 execute the "sleep assistance" mode, the control unit 115 performs the following control: from the ceiling to the floor, the light-emitting element emitting light of a bulb color (L) for 20 minutes, 21 minutes, and 22 minutes 133L goes out. Next, the control unit 115 performs control to completely turn off the lighting fixture 100 for 28 minutes, 29 minutes, and 30 minutes. That is, the control unit 115 sequentially turns off the lighting fixture 100 arranged on the ceiling to the lighting fixture 100 arranged on the floor. As a result, time-difference dimming can be achieved in which the lights are turned off in the sunset mode.

Alternatively, for example, the control unit 115 performs control to mix the daylight color (D) with the light-emitting color of blue (B). For example, the control unit 115 turns on the light-emitting element 133L that emits light of the bulb color (L) from the light-off state of the lighting fixture 100, and thereafter causes the light-emitting element 133D that emits light of the daylight color (D) and blue (B) The light-emitting element 133B of light) is turned on and performs at least one of dimming and color adjustment. This can prompt the user to wake up.

Alternatively, for example, the plurality of lighting fixtures 100 are arranged in a range from the ceiling to the floor. For example, when the lighting fixture 100 is turned off, the control unit 115 The following control is performed: from the lighting fixture 100 installed on the floor to the lighting fixture 100 arranged on the ceiling, the time is shifted by 0 minutes, 1 minute, and 2 minutes to start lighting. Next, the control unit 115 lights up the light-emitting element 133L, and performs at least one of dimming and toning after 8 minutes, 9 minutes, and 10 minutes from the floor to the ceiling. Next, the control unit 115 lights up the light-emitting element 133D and the light-emitting element 133B, and performs at least one of dimming and color adjustment after 28 minutes, 29 minutes, and 30 minutes from the floor to the ceiling. As a result, the time-dimming of lighting up in the manner of sunrise can be realized.

In addition, the time described above with respect to the lighting system is an example, and it is not limited to this.

Several embodiments of the present invention have been described, but these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments or modifications thereof belong to the scope or spirit of the invention, and belong to the invention described in the claims and the equivalent scope thereof.

120‧‧‧Apparatus body

131‧‧‧ substrate

133B, 133D, 133G, 133L, 133R‧‧‧‧Light-emitting elements

140‧‧‧light distribution control department

141‧‧‧Lens section

141a‧‧‧Part 1

141b‧‧‧Part 2

141c‧‧‧Part 3

141e‧‧‧ flat

145‧‧‧ convex

A16‧‧‧arrow

Claims (3)

A lighting fixture includes: a substrate; a plurality of first white light sources installed on the substrate and disposed across a first column along a circumferential direction of the substrate; a plurality of second white light sources installed on the substrate A color light source is mounted on the substrate, and is disposed on the substrate in a second row that extends beyond the first column and in a circumferential direction of the substrate; the color light source is mounted on the substrate, and is disposed between the first column and the second column. The columns are arranged across the third column along the circumferential direction of the substrate; and a light distribution control unit covering the first white light source, the second white light source, and the color light source, and having a lens portion The lens unit controls the light distribution of the first white light source, the light distribution of the second white light source, and the light distribution of the color light source, and the light distribution control unit includes two lenses. A flat portion is formed between the portions, and a light diffusion portion is formed on the flat portion. The lighting fixture according to item 1 of the scope of patent application, wherein the lens portion includes: a first part covering the first white light source and controlling light distribution of the first white light source; and a second part covering The second white light source and controlling light distribution of the second white light source; and the third part covers the color light source and performs light distribution of the color light source control. The luminaire according to item 2 of the scope of patent application, wherein the third portion includes a diffusion treatment portion provided on a surface and diffusing the transmitted light.