WO2021205657A1 - 照明器具、空気調和機および制御システム - Google Patents
照明器具、空気調和機および制御システム Download PDFInfo
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- WO2021205657A1 WO2021205657A1 PCT/JP2020/016143 JP2020016143W WO2021205657A1 WO 2021205657 A1 WO2021205657 A1 WO 2021205657A1 JP 2020016143 W JP2020016143 W JP 2020016143W WO 2021205657 A1 WO2021205657 A1 WO 2021205657A1
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- Prior art keywords
- light
- light emitting
- unit
- light source
- incident
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0088—Ventilating systems
- F21V33/0092—Ventilating systems with heating or cooling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/078—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser combined with lighting fixtures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/006—Solar simulators, e.g. for testing photovoltaic panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/05—Optical design plane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/02—Details or features not otherwise provided for combined with lighting fixtures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Definitions
- This disclosure relates to lighting equipment, air conditioners, and control systems using them.
- Patent Document 1 There is a lighting technology that improves the feeling of openness of the space by emitting light that imitates the sky such as the blue sky from the main surface and making it look like a window (for example, Patent Document 1).
- Patent Document 2 discloses an example of a circulator having a lighting fixture.
- Patent Document 1 feels like a window to the observer, it still provides a more natural landscape such as a change in the shape of the sunlight due to an external wind or a time change. It was inadequate.
- the circulator with a lighting fixture described in Patent Document 2 integrates an air circulation function and a lighting function, but has an air circulation function and a lighting function for the purpose of providing a more natural landscape. It does not disclose the point of integration and its specific method.
- an object of the present disclosure is to provide a lighting fixture, an air conditioner, and a control system that improve the feeling of openness of the space where the observer is.
- One aspect of the air conditioner according to the present disclosure is an air passage connecting a suction port and an air outlet, a housing having an opening for illumination at a position visible to the user in the installed state, and the suction port and the air outlet.
- a blower provided in the housing, a first light source provided in the housing, a light incident portion provided at a position visible from a lighting opening in the housing and incident light emitted from the first light source, and a first light incident portion.
- a light emitter having a first light emitting portion that emits a first light that is a first light generated based on the light emitted from the light source of the above and includes a light simulating natural light, and a light emitting body in a housing.
- the light extraction unit is provided in the air passage.
- one aspect of the lighting fixture according to the present disclosure is a first light source, a light incident portion that incidents light emitted from the first light source, and a first light generated based on the light, which is natural light.
- control system is characterized by including the above-mentioned air conditioner or luminaire and a control unit for controlling the light emitting state of the light emitting body and the light extraction unit included in the air conditioned device or the luminaire.
- FIG. 1 It is sectional drawing which shows the other structural example of a lighting unit. It is sectional drawing which shows an example of the structure of the lighting fixture which concerns on Embodiment 1. FIG. It is sectional drawing which shows the other example of the lighting fixture which concerns on Embodiment 1. FIG. It is explanatory drawing which shows the other example of the light extraction part and the arrangement example of each member seen from the viewing side. It is sectional drawing which shows the modification of the lighting fixture which concerns on Embodiment 1.
- FIG. It It is a perspective view which shows the modification of the lighting fixture which concerns on Embodiment 1.
- FIG. 1 It is sectional drawing which shows the modification of the lighting fixture which concerns on Embodiment 1. FIG.
- Embodiment 1 Embodiment 1
- the lighting fixture, the air conditioner, and the control system according to the present disclosure will be described with reference to the drawings.
- the following embodiments are merely examples, and each embodiment can be appropriately combined and each embodiment can be appropriately changed.
- the scale of dimensions may differ depending on the component.
- the coordinate axes of the xyz orthogonal coordinate system may be shown in each figure for the sake of simplicity.
- the main emission direction which is the direction in which the first light is emitted, is defined as the + y-axis direction.
- the first light refers to light that the target lighting fixture mainly wants to emit, such as scattered light that simulates the sky.
- the traveling direction of the incident light is set to the + z axis direction.
- the main emission direction may be read as the normal direction of the main light emitting surface of the luminaire.
- the main light emitting surface refers to a particularly defined surface among the light emitting surfaces of the lighting fixture or the light emitting body included in the lighting fixture. More specifically, the main light emitting surface may be any surface among the light emitting surfaces of the luminaire or the light emitting body included in the luminaire that the observer wants to see as the light emitting surface from which the first light is emitted. .. In the case of a lighting fixture that simulates a window, the main light emitting surface may be, for example, a surface whose normal direction faces the room when installed as a window.
- the main light emitting surface may be one of two surfaces connected by the side surface as long as the light emitting body included in the luminaire has a plate shape.
- the two surfaces connected by the side surfaces may be referred to as a main surface
- the side surface of the plate shape that is, the surface forming the end surface of the main surface in the plate shape may be simply referred to as an end surface or a side surface.
- the main light emitting surface may be one of the side surfaces of the prism or a part of the side surface of the prism as long as the light emitting body included in the luminaire has a rod shape. ..
- the rod shape refers to the shape of a prism in which two bottom surfaces are connected by one or a plurality of side surfaces.
- the rod is a general term for prisms.
- one or more side surfaces connected by the bottom surface may be referred to as a main surface
- the bottom surface of the prism that is, the surface forming the end surface of the main surface in the rod shape may be simply referred to as an end surface or a side surface.
- the main light emitting surface is not limited to a flat surface, and may include, for example, a curved surface or an inclined surface.
- the main light emitting surface may be curved or inclined, and may have a surface shape in which two or more of a flat surface, a curved surface, or an inclined surface are combined.
- the normal direction of the main light emitting surface may be the normal direction of the central portion or the normal direction of the tangent plane. Further, when the normal direction of the main light emitting surface is not fixed as one as in the case of a cylindrical shape, the normal direction at an arbitrary position of the main light emitting surface may be set as the main emission direction.
- FIG. 1 is a perspective view showing a schematic configuration of the lighting unit 100
- FIG. 2 is a cross-sectional view showing a schematic configuration of the lighting unit 100.
- the lighting unit 100 includes a light source 10 and a diffuser 20.
- the diffuser 20 and one or more light sources 10 provided in pairs with the diffuser 20 are collectively referred to as a lighting unit 100. That is, the lighting unit 100 is composed of a pair of the light source 10 and the diffuser 20.
- the lighting unit 100 may include a frame body that supports the light source 10 and the diffuser 20.
- the y-axis direction will be described as the thickness direction (vertical direction) of the diffuser 20, the z-axis direction as the horizontal direction (horizontal direction), and the x-axis direction as the vertical direction (front-back direction).
- the above direction does not always match the direction in the actual installation state.
- the main light emitting surface is the surface f22.
- the main light emitting surface may be a part of the surface f22. Further, the main light emitting surface may be formed on the surface f22.
- the region may be referred to as a main light emitting region, and the region on the opposite side thereof may be referred to as a back side region.
- the light incident on the end face of the diffuser 20 may be referred to as light Li.
- the first light emitted from the diffuser 20 (in this example, scattered light simulating the sky) may be referred to as light Ls.
- the light that guides the inside of the diffuser 20 may be referred to as light Lt or propagating light Lt.
- light guide means that light incident on a certain medium propagates according to a predetermined optical path in the medium. Therefore, the light Lt does not include the light scattered or absorbed in the diffuser 20.
- the emission surface from which the light Ls is emitted is not limited to one in the diffuser 20.
- the light Ls can also be emitted from the surface f23 on the opposite side of the surface f22.
- FIG. 3 is a configuration diagram showing a schematic configuration of a light source included in the lighting unit 100.
- FIG. 4 is a configuration diagram showing an arrangement example of a light source included in the lighting unit 100.
- the light source 10 may be, for example, an LED light source.
- the light source 10 may include a substrate 12 and an LED element 13.
- a plurality of LED elements 13 are provided.
- the LED elements 13 are arranged on the substrate 12.
- the LED element is an example of a light emitting element.
- the light emitting element is not limited to the LED element, and may be, for example, a laser light emitting element, a fluorescent tube, or the like.
- the light source 10 is provided so as to face the end surface forming the end portion of the surface f22 on which the main light emitting surface of the diffuser 20 is formed.
- the light source 10 includes a light emitting surface f11 that emits light Li that is incident light on the diffuser 20, and the light emitting surface f11 constitutes an end portion of a surface f22 on which the main light emitting surface of the diffuser 20 is formed. Arranged so as to face the end face.
- the lighting unit 100 may include a plurality of light sources 10 for one diffuser 20.
- the unit of the light source 10 is a unit capable of independently on / off control, light emission amount control, or light emission color control.
- the lighting unit 100 may be configured to include only one light source 10 for one diffuser 20.
- a group (including one case) of light sources or light emitting elements that emit incident light that causes light Ls to one diffuser 20 may be collectively referred to as a light source 10.
- the function of the light source that emits light Li will be described using the light source 10 as the subject, but the function may be regarded as the function of one light source or one light emitting element included in the lighting unit 100. It can be regarded as a function of a combination of a plurality of light sources or a plurality of light emitting elements.
- each LED element 13 in the figure can be regarded as one light source 10.
- one of the light sources 10 corresponding to each LED element 13 in the drawing does not prevent the configuration of the light source 10 shown in FIG. 3 (that is, the configuration including a plurality of LED elements 13).
- each light source 10 in the drawing can be regarded as one LED element 13.
- the light source 10 emits light Li which is incident light on the diffuser 20.
- the light source 10 emits white light as, for example, light Li. Further, the light source 10 may emit light having a predetermined correlated color temperature Tci as light Li, for example.
- the correlated color temperature Tci is, for example, 6500K.
- the correlated color temperature Tci is, for example, 5000K.
- the correlated color temperature of the light emitted by each light source 10 may be the same or different.
- the color of the light Li emitted from the light source 10 may be a color other than white.
- the lighting unit 100 can include a white light source and a green light source as the light source 10. Further, the lighting unit 100 can include a white light source, a green light source, and an orange light source as the light source 10. Further, the lighting unit 100 can include a white light source having a different color temperature as the light source 10. For example, the lighting unit 100 can include a white light source having a high color temperature and a white light source having a low color temperature as the light source 10.
- the difference in color temperature between the high color temperature white and the low color temperature white is, for example, 8800K.
- the high color temperature white correlated color temperature is, for example, 14400K.
- the high color temperature white correlated color temperature is, for example, 11500 K or higher.
- the correlated color temperature of white, which has a high color temperature is, for example, 19000 K or less.
- the low color temperature white correlated color temperature is, for example, 5600K.
- the correlated color temperature of white at a low color temperature is, for example, 5500 K or more.
- the correlated color temperature of white, which is a low color temperature is, for example, 6050 K or less.
- the light source 10 is arranged so as to face one end surface forming the end portion of the surface f22 on which the main light emitting surface is formed, as shown in FIG. 4, for example, the end portion of the surface f22. It may be arranged so as to face two or more constituent end faces.
- the light source 10 (more specifically, its light emitting surface f11) is arranged so as to face at least one end surface of the end surfaces constituting the end portion of the surface f22 on which the main light emitting surface of the diffuser 20 is formed. It may have been. Further, for example, a plurality of light sources 10 may be arranged along at least one end surface of the end surfaces forming the end portion of the surface f22 on which the main light emitting surface of the diffuser 20 is formed. Further, as will be described later, the lighting unit 100 may have a configuration in which light is incident from the back surface (surface f23) of the diffuser 20 and light Ls is emitted from the front surface (surface f22).
- the light source 10 may be arranged so as to face the back surface of the diffuser 20.
- the light source 10 acts as a light source for incident light Li on one diffuser 20, it is regarded as the light source 10 of the present embodiment.
- the diffuser 20 has a rectangular plate shape as shown in FIG. 5, and has four side surfaces (planes f21a, f21b, f21c, f21d in the drawing) and two main surfaces connected to the four side surfaces.
- the light source 10 may be arranged as follows.
- the light source 10 may be arranged so as to face the end surface f21a of the diffuser 20. At this time, a plurality of light sources 10 may be arranged along the end surface f21a of the diffuser 20. Further, as an example, the light source 10 may be arranged so as to face the end face f21a and the end face f21b of the diffuser 20. At this time, a plurality of light sources 10 may be arranged along the end face f21a and the end face f21b of the diffuser 20. Further, as an example, the light source 10 may be arranged so as to face the side surface f21a, the end surface f21b, and the end surface f21c of the diffuser 20.
- a plurality of light sources 10 may be arranged along the end face f21a, the side surface f21b, and the end face f21c of the diffuser 20. Further, as an example, the light source 10 may be arranged so as to face the side surface f21a, the end surface f21b, the end surface f21c, and the end surface f21d of the diffuser 20. At this time, a plurality of light sources 10 may be arranged along the end face f21a, the end face f21b, the end face f21c, and the end face f21d) of the diffuser 20.
- the light source 10 may be arranged so as to face at least one of the end face f21a, the end face f21b, the end face f21c, and the end face f21d of the diffuser 20.
- a plurality of light sources 10 may be arranged along at least one of the end face f21a, the end face f21b, the end face f21c, and the end face f21d of the diffuser 20.
- the shape of the diffuser 20 is not limited to the rectangular plate shape.
- the positional relationship between the end face and the light source is applied, for example, by replacing one end face with another end face facing the other end face or another adjacent end face. May be good.
- the positional relationship between the end face and the light source may be, for example, the positional relationship between the end face and the light source, for example, a part of the other part of the side surface that is opposite to a part of the area of the side surface, or a part of the other part that is adjacent to the end face. It can be applied by replacing it with an area or the like.
- the diffuser 20 has a main light emitting surface formed on a rod-shaped side surface (main surface f22 in the figure) connected by two bottom surfaces (end faces f21a and f21b in the figure) as shown in FIG.
- the light source 10 may be arranged as follows.
- the light source 10 may be arranged so as to face the end surface f21a of the diffuser 20. At this time, only one light source 10 may be arranged with respect to the end surface f21a of the diffuser 20, or a plurality of light sources 10 may be arranged. For example, a plurality of light sources 10 may be arranged along the outer peripheral shape of the end surface f21a or evenly arranged in the surface. Further, as an example, the light source 10 may be arranged so as to face the end face f21a and the end face f21b of the diffuser 20.
- only one light source 10 may be arranged with respect to each of the end face f21a and the end face f21b of the diffuser 20, or a plurality of light sources 10 may be arranged.
- a plurality of light sources 10 may be arranged with respect to the end face f21a and the end face f21b so as to be evenly arranged along the outer peripheral shape thereof or in each plane.
- the light Li from the light source 10 can be replaced with light that guides external light (sunlight or the like) in consideration of, for example, ZEB (Zero Energy Building).
- a daylighting member or a light guide body that takes in the external light and emits it in a predetermined direction can be used.
- the lighting unit 100 can also include such a daylighting member and a light guide as the light source 10.
- the diffuser 20 will be described with reference to the drawings.
- the light Li from the light source 10 is incident on the end of the surface f22 of the diffuser 20 in the + z-axis direction, and the light Ls generated by the scattering action of the diffuser 20 is emitted from the surface f22 to diffuse.
- the body 20 is visualized as a light emitting body that emits light close to the natural sky.
- the diffuser 20 is an example of a light emitting body included in the lighting equipment.
- the diffuser 20 as a light emitting body that emits a desired first light may be simply referred to as a light emitting body 20 or a light emitting panel 20.
- the shape of the light emitting panel 20 is not limited to the plate shape.
- the diffuser 20 has a light incident surface on which light Li is incident and a light emitting surface (more specifically, a main light emitting surface) that emits light Ls, which is the first light.
- the surface f22 which is the first surface, corresponds to the light emitting surface (particularly, the main light emitting surface), and the surface f21, which is the end surface of the surface f22 on which the main light emitting surface is formed, corresponds to the light incident surface.
- the diffuser 20 may further have a surface f23 which is a second surface on the opposite side of the first surface.
- the main light emitting surface may be a part of the first surface. Further, the main light emitting surface may be formed on the first surface. Further, the light incident surface may be a part of the surface f21 which is the end surface of the surface f22. Further, the light incident surface may be formed on the end surface.
- the first surface may be referred to as a front surface f22, and the second surface on the opposite side thereof may be referred to as a back surface f23. Further, the end face may be referred to as a side surface f21.
- the diffuser 20 incidents the light Li emitted by the light source 10. Further, the diffuser 20 guides the incident light Li. Further, the diffuser 20 guides the incident light Li as light Lt. Further, the diffuser 20 emits light Ls while guiding the light Lt.
- FIG. 7 is an explanatory diagram showing an example of guiding light Li and an example of generating light Ls in a diffuser included in the lighting unit.
- the diffuser 20 incidents light Li emitted from the light source 10 from the side surface f21, guides the light Li internally as light Lt, and scatters a part of the light Li as light Ls at least on the front surface f22. It may be emitted from.
- the diffuser 20 contains the base material 201 and the particles 202.
- the particle 202 is, for example, a nanoparticle.
- a "nanoparticle” is a particle having a size on the order of nanometers (nm). Nanoparticles generally refer to particles having a size of 1 nm to several hundred nm.
- the particle 202 is, for example, a particle having a particle size of nano-order.
- Particle 202 can take a spherical shape or another shape.
- the diffuser 20 can contain a plurality of types of particles 202.
- the particle size of the particles 202 may be used as the average particle size.
- the diffuser 20 may include particles other than nanoparticles as one of the plurality of types of particles 202.
- Particle 202 is, for example, an inorganic oxide.
- the inorganic oxide is, for example, ZnO, TiO 2 , ZrO 2 , SiO 2 , Al 2 O 3, or the like.
- the particles 202 scatter the light Li incident in the diffuser 20 to obtain light Ls. Further, the particles 202 scatter the light Lt propagating in the diffuser 20 to obtain light Ls.
- the base material 201 contains particles 202.
- the particles 202 may be added to the base material 201.
- the particles 202 are dispersed in, for example, the base material 201.
- the base material 201 is not particularly limited, but is, for example, a transparent material.
- the base material 201 does not necessarily have to be transparent at all wavelengths of light Li.
- the base material 201 may be absorbed at a specific wavelength of the wavelengths of light Li.
- the substrate 201 has a transmittance (straight-line transmittance) at a light guide distance of 5 mm, preferably 90% or more, more preferably 95% or more, and even more preferably 98% or more at the design wavelength.
- the design wavelength may be a predetermined wavelength of the wavelengths of the incident light.
- the design wavelength is not limited to one wavelength, and may be a wavelength (wavelength band) having a plurality of wavelengths or widths.
- the design wavelength may be, for example, one or more of 450 nm, 550 nm and 650 nm when the incident light is white light.
- the design wavelength may be three wavelengths of 450 nm, 550 nm and 650 nm.
- the base material 201 is, for example, a solid.
- the base material 201 may be, for example, a resin plate using a thermoplastic polymer, a thermosetting resin, a photopolymerizable resin, or the like. Further, as the resin plate, an acrylic polymer, an olefin polymer, a vinyl polymer, a cellulose polymer, an amide polymer, a fluorine polymer, a urethane polymer, a silicone polymer, an imide polymer or the like can be used.
- the diffuser 20 may be formed, for example, by performing a curing treatment in a state where the particles 202 are dispersed in the material of the base material 201 before curing.
- the base material 201 is not limited to a solid, but may be a liquid, a liquid crystal, or a gel-like substance.
- the diffuser 20 may be formed of, for example, a porous material, an organic molecule-dispersed material, an organic-inorganic hybrid material (also referred to as an organic-inorganic nanocomposite material), or a metal particle-dispersed material made by the sol-gel method.
- the diffuser 20 may be an organic / inorganic hybrid resin, for example, a hybrid resin of a resin and an inorganic oxide.
- the diffuser 20 has an inorganic oxide produced by solgel curing based on a base material 201 containing an inorganic oxide material and an organic compound as a substance corresponding to the particles 202.
- fine pores and the like generated by such a manufacturing process are also regarded as particles 202.
- the diffuser 20 may have fine irregularities smaller than the wavelength of blue light formed on the surface of the base material 201.
- the diffuser 20 has fine concave portions or convex portions formed on the surface of the base material 201 as the particles 202.
- the maximum diameter of the concave portion or the convex portion is preferably nano-order (for example, a size of 1 nm to several hundred nm).
- the specific configuration of the diffuser 20 is not limited as long as it is a structure having a scattering ability.
- the particles 202 and the base material 201 do not have to be clearly distinguished as different members.
- the diffuser 20 may have at least one surface coated with a translucent functional coating such as an antireflection coat, an antifouling coat, a heat shield coat, and a water repellent finish. Further, the diffuser 20 is configured to be sandwiched between, for example, two transparent base materials (for example, a glass plate) in consideration of the functionality as a window (impact resistance, water resistance, heat resistance, etc.). You may. In this case, the diffuser 20 may be an interlayer film of laminated glass.
- the diffuser 20 has, for example, a plate shape.
- the plate shape is not limited to the flat plate shape. That is, the plate shape may be a curved shape.
- the diffuser 20 may have a curved shape in either or both of the front surface f22 and the back surface f23 (first surface and second surface). When the front surface f22 and the back surface f23 are curved, the directions of curvature of the two may or may not be the same.
- both surfaces may be convex (outwardly convex) curved surfaces. Further, for example, both surfaces may have a concave curved surface (inwardly convex shape).
- one surface may be a convex curved surface and the other surface may be a concave curved surface.
- the diffuser 20 may include a slope, a step, a dent, a convex portion, or the like in a part of the surface surface.
- the diffuser 20 has, for example, a rod shape.
- the rod shape is not limited to a shape such as a cylinder, a quadrangular prism, or a triangular prism that is rectangular in a cross section parallel to the extending direction of the prism, or a shape in which the waist circumference of the prism is constant in the height direction.
- the extending direction of the prism is, for example, the z-axis direction when the bottom surface of the prism is the surface f21a of FIG.
- the rod shape also includes a shape equivalent to a plate shape. In that case, a rod shape in which the bottom surface of the prism corresponds to the main surface of the plate shape and at least one of the bottom surfaces is the main light emitting surface may be regarded as the plate shape.
- the stretching direction of the prism is the z-axis direction.
- the y-axis direction which is the axial direction parallel to the main emission direction, is the normal direction of the side surface of the prism. Therefore, the main light emitting surface is a part of the side surface of the prism. Further, the incident surface is at least one of the bottom surfaces of the prism.
- the region of the side surface of the prism on which the main light emitting surface is formed may be regarded as the first surface.
- the region of the side surface of the prism facing the first surface may be regarded as the second surface.
- the two bottom surfaces of the prism may be regarded as side surfaces.
- the side surface may further include a region other than the first surface or the second surface of the side surface of the prism.
- the shape of the diffuser 20 viewed from above is not particularly limited.
- the front shape of the diffuser 20 is a rectangular shape, a polygonal shape, a circular shape, a Western barrel shape, a thread winding shape, a shape formed by connecting two or more straight lines, and a shape formed by connecting two or more arcs. It may have a shape in which the above straight line and one or more arcs are connected.
- the side view shape of the diffuser 20 (the shape on the xy plane and the shape on the yz plane in the drawing; hereinafter referred to as the side shape) is not particularly limited.
- the side surface shape of the diffuser 20 is a shape formed by connecting four or more straight lines including a rectangular shape, a barrel shape, a pincushion shape, and two other straight lines facing each other, or two or more straight lines including two facing straight lines. It may have a shape in which a straight line and two or more arcs are connected.
- the diffuser 20 according to the first embodiment is described as a plate shape.
- the side surface f21 (end surface) is incident with the light Li emitted by the light source 10.
- the side surface f21 is arranged, for example, so as to face the light emitting surface 11 of the light source 10.
- the front surface f22 (first surface) includes particles 202 (nanoparticles as well as compositions having a size on the order of nanometers (sol-gel-cured oxides and the like), pores, recesses or protrusions on the surface. Hereinafter, these are also collectively referred to as nano-order optical media.)
- the light Ls scattered by the light Ls is emitted.
- the nano-order optical medium is not particularly limited as long as it is an optical medium (including an interface) that causes a Rayleigh scattering or a Rayleigh scattering-like scattering phenomenon in the base material 201 with respect to light Lt.
- the front surface f22 may emit light Lt guided through the diffuser 20.
- the front surface f22 may emit light that guides the inside of the diffuser 20 and reaches the end portion facing the incident surface as light that reproduces the sunlight.
- the term particle 202 is used as a general term for such nano-order optical media unless otherwise specified.
- the back surface f23 (second surface) may emit light Ls scattered by the particles 202. Further, the back surface f23 may emit light Lt guided through the diffuser 20. For example, the back surface f23 may emit light that guides the inside of the diffuser 20 and reaches the end portion facing the incident surface to the outside for the purpose of preventing stray light.
- the back surface f23 faces the front surface f22.
- the light Lt incident on the diffuser 20 is reflected by the front surface f22 and the back surface f23 and guided.
- the light Lt is guided by, for example, total internal reflection.
- the light Lt is guided in the diffuser 20.
- a surface other than the front surface f22 or the back surface f23 may emit light Ls scattered by the particles 202. Further, a surface other than the front surface f22 or the back surface f23 may emit the light Lt guided through the diffuser 20.
- FIG. 8 is a diagram showing an example of a scattered light intensity angle distribution of Rayleigh scattering by a single particle 202.
- the light that collides with the particles 202 is described by, for example, the light Li emitted from the light source.
- the light that collides with the particles 202 may be light Lt that is guided through the diffuser 20.
- the vertical axis Z is an axis parallel to the traveling direction of the light Li. Light Li travels in the + Z axis direction.
- the horizontal axis X is an axis orthogonal to the vertical axis Z.
- the scattering cross section ⁇ is a parameter representing the probability of scattering, and has a relationship between the particle size d and the wavelength ⁇ of light and the following equation (2). ⁇ d6 / ⁇ 4 ⁇ ⁇ ⁇ (2)
- the scattering cross section ⁇ in Rayleigh scattering is inversely proportional to the fourth power of the wavelength ⁇ of light. Therefore, in Rayleigh scattering, the shorter the wavelength of light, the higher the probability of scattering. As described above, according to the equation (2), it can be seen that the blue light is more likely to be scattered than the red light.
- the wavelength ⁇ of blue light is, for example, 450 nm.
- the wavelength ⁇ of red light is, for example, 650 nm.
- FIG. 8 shows the unpolarized scattered light intensity distribution.
- the particle size d of the particles 202 is 100 nm.
- the refractive index n of the particle 202 is 1.43.
- the refractive index of the base material 201 is 1.33.
- the wavelength of light is 450 nm.
- the light Li emitted from the light source 10 is incident on the side surface f21 of the diffuser 20.
- the light Li incident from the side surface f21 is guided in the diffuser 20 as light Lt.
- the incident light Lt is reflected by the front surface f22 and the back surface f23 of the diffuser 20 (see FIG. 7).
- a part of the light Lt collides with the particles 202 and the like when propagating through the diffuser 20 (or the course is obstructed by the particles 202 and the like).
- the light Lt that collides with the particles 202 and the like is scattered in all directions (see FIG. 8).
- the light incident on the front surface f22 at an incident angle equal to or less than the critical angle is emitted from the front surface f22 as light Ls.
- the critical angle is the smallest angle of incidence at which total internal reflection occurs when light is directed from a place with a high refractive index to a place with a low refractive index.
- the light incident on the back surface f23 at an incident angle equal to or less than the critical angle is emitted from the back surface f23 as light Ls.
- the critical angle is the smallest angle of incidence at which total internal reflection occurs when light is directed from a place with a high refractive index to a place with a low refractive index.
- the correlated color temperature Tcs of the scattered light is higher than the correlated color temperature Tci of the incident light.
- the correlated color temperature Tci is the correlated color temperature of the light Li emitted by the light source 10.
- the correlated color temperature Tcs is the correlated color temperature of light Ls.
- the light Li When light Li has a spectral distribution over the entire visible light range, blue light is preferentially scattered.
- the light Li is, for example, white light.
- the light source 10 includes, for example, a white LED. Therefore, by appropriately designing the light source 10 and the diffuser 20, the light Ls has a correlated color temperature indicating blue, which is close to the actual color of the sky.
- the thickness of the diffuser 20 can be reduced by appropriately designing the light guide direction, the light guide distance, and the particle concentration of the light Lt in the diffuser 20.
- the thickness of the diffuser 20 can be 100 mm or less.
- the thickness of the diffuser 20 may be 20 mm or less, and may be 10 mm or less.
- the thickness of the diffuser 20 can be 5 mm or less.
- the thickness of the diffuser 20 can be 1 mm or less.
- the surface is divided into two, such as the front surface f22 and the back surface f23, but the rod-shaped diffuser 20 has the entire main surface (rod-shaped side surface) as the main light emitting surface.
- the front surface f22 should be read as "the area of the main surface facing the + y-axis direction”
- the back surface f23 should be read as "the area of the main surface facing the -y-axis direction”. Just do it.
- FIG. 9 is a cross-sectional view showing another configuration example of the lighting unit 100.
- the lighting unit 100 may include a back plate 30 in addition to the light source 10 and the diffuser 20.
- the back plate 30 is provided on the back side (in this example, the ⁇ y axis direction) of the diffuser 20.
- the back plate 30 may be provided so as to face the back surface f23 of the diffuser 20. It is preferable that the distance between the back plate 30 and the diffuser 20 is short.
- the back plate 30 has a reflective function or is opaque, and the transmittance is preferably 50% or less, and more preferably 10% or less.
- the back plate 30 is preferably a diffuse reflector, more preferably a white diffuse reflector.
- the back plate 30 may be a light absorber.
- the open / closed state of the back plate 30 may be changeable. Since the back plate 30 is provided so as to be openable and closable, the back plate 30 is opened when the user wants to visually recognize the back side space or when he / she wants to take in outside light, and the back side space is visually recognized through the diffuser 20.
- the lighting unit 100 can also be used as a window by taking in outside light.
- the open / closed state of the back plate 30 may be changed by folding the back plate 30 or storing it in a door pocket, such as a blind or a shutter.
- the back plate 30 may have its shielding state changeable depending on the voltage applied to the back plate 30, such as a liquid crystal shutter.
- the back plate 30 may have its shielding state changeable depending on the voltage applied to the back plate 30, such as a liquid crystal panel.
- the back plate 30 may be integrally supported with the diffuser 20 in the frame body 500. In that case, the back plate 30 may be integrally supported with the diffuser 20 so as to be openable and closable.
- the light Ls is emitted not only from the front surface f22 of the diffuser 20 but also from the back surface f23.
- the front surface f22 faces the side where the observer is (hereinafter referred to as the inside) in the space divided by the wall
- the back surface f23 side (hereinafter referred to as the outside) is more than the back surface f23. ) Is not visible to the observer and is a loss.
- the emission of light Ls to the outside may cause light pollution to a person located outside other than the observer.
- the back plate 30 By providing the back plate 30 on the back surface f23 side of the diffuser 20, it is possible to prevent the light Ls emitted from the back surface f23 of the diffuser 20 when the light source 10 is turned on from being emitted to the outside. Further, by using a member that reflects the light Ls emitted from the back surface f23, such as a diffuse reflector, as the back plate 30, the light Ls emitted from the back surface f23 can be emitted from the front surface f22, and the lighting unit. It is possible to improve the light utilization efficiency of 100, more specifically, the efficiency in which optical Li is used as the first light.
- FIG. 10 is a cross-sectional view showing an example of the configuration of the lighting fixture 200 according to the first embodiment.
- the luminaire 200 includes a light source 10, a light emitting body 20, and a light extraction unit 40.
- the light emitting body 20 includes a light incident unit 24, a light guide unit 25, a first light emitting unit (scattered light emitting unit) 26, and a second light emitting unit (propagating light emitting unit) 27. And have.
- the illuminant 20 is, for example, the diffuser 20 described above.
- the light incident portion 24 incidents the light emitted from the light source 10.
- the light guide unit 25 guides the incident light. Further, the light guide unit 25 generates the first light while guiding the incident light.
- the light guide unit 25 includes, for example, a medium and a nano-order optical medium such as light scattering particles, and the incident light is scattered by the nano-order optical medium while guiding the inside of the medium, whereby the first Light (light Ls) may be generated.
- the first light emitting unit 26 emits the first light generated by the light guide unit 25.
- the first light emitting unit 26 corresponds to the above-mentioned main light emitting surface.
- the second light emitting unit 27 emits light that has reached the light guide end portion without becoming the first light among the incident light, that is, propagating light that has reached the light guide end portion.
- the light emitted from the second light emitting unit 27 may be referred to as light Lo.
- the light emitting body 20 includes, for example, a light incident portion 24 at a first end portion and a second light emitting portion 27 at a second end portion facing the first end portion.
- the second light emitting unit 27 may be provided on the same surface as the surface on which the first light emitting unit 26 is provided. Further, as will be described later, the position where the second light emitting unit 27 is provided is a second position, such as when a light deflecting unit 50 or the like that changes the traveling direction of the propagating light is provided at a position facing the light incident unit 24. Not limited to the edges.
- the second light emitting unit 27 may be provided in a part of the surface on the surface where the first light emitting unit 26 is provided, regardless of whether the light emitting unit 27 is an edge light system or a backlight system.
- the light Li emitted from the light source 10 is incident on the inside of the light emitting body 20 from the light incident portion 24.
- the light Li incident on the light emitting body 20 becomes light Ls and is emitted from the first light emitting unit 26 while guiding the light guide unit 25 in the light emitting body 20 as light Lt. Further, the light Li incident on the light emitting body 20 is emitted as light Lo from the second light emitting unit 27 after guiding the light guide portion 25 in the light emitting body 20 as light Lt.
- the correlation of the light Lo emitted from the second light emitting unit 27 The color temperature is lower than the correlated color temperature of the light Ls emitted from the first light emitting unit 26.
- the luminaire 200 of the present embodiment at least a part of the light Lo emitted from the second light emitting unit 27 is combined with the light Ls by the light extraction unit 40 provided in the vicinity of the second light emitting unit 27.
- the light is emitted in the same direction (in the example in the figure, the + y-axis direction which is the direction toward the space facing the main light emitting surface where the first light emitting portion 26 is provided).
- the light extraction unit 40 may have a deflection function, that is, a function of changing the traveling direction of the light Lo emitted from the second light emitting unit 27 and directing the light Lo to a specific direction.
- the specific direction may be, for example, a direction perpendicular to the light guide direction of the light Lt (not limited to the + y-axis direction but also the ⁇ y-axis direction), or may be the traveling direction of the light Ls.
- the direction may be toward the space facing the main light emitting surface where the first light emitting unit 26 is provided, or may be the direction toward the space where the user of the lighting equipment is. .. It should be noted that such deflection includes deflection during transmission such as refraction and deflection due to reflection.
- the light extraction unit 40 may be formed with, for example, a lens, a mirror, a film, a surface coating, or the like in order to control refraction, reflection, diffusion, transmission, etc. of the light Lo which is the emitted light. As described above, if the light extraction unit 40 has a function of changing any of the traveling direction, spreading, irradiation range, and intensity distribution of the incident light with respect to the incident light, and then directing the light in a specific direction. good.
- the light Lo emitted from the second light emitting unit 27 is scattered light having a spread in the angular direction, and a space in a specific direction by deflecting the scattered light (a space where an observer is present, etc.).
- the light extraction unit 40 may be a mirror having a curvature. With such a configuration, the light reflected by the light extraction unit 40 can be made into light directed in a specific direction while being controlled to be substantially parallel light.
- the light extraction unit 40 may have a diffusion function.
- the light emitted from the second light emitting unit 27 can be taken out as light traveling in a specific direction while suppressing the glare felt by humans.
- the light extraction unit 40 can also be provided at the first end portion where the light source 10 is provided. However, in that case, the light extraction unit 40 does not deflect the light emitted from the second light emitting unit 27 of the light emitting body 20 to the light traveling in a specific direction, but rather the light emitting body provided with the light incident unit 24. In the space facing the first end of 20, the light emitted from the first end, the light source 10 or another light source is deflected to light traveling in a specific direction.
- the light extraction unit 40 provided in the space facing the first end portion may be referred to as a second light extraction unit 40a.
- the light Lo can be made to imitate the sunlight. That is, it is possible to give the observer the illusion that the sun is present on the back side of the illuminant 20 and the sunlight from the sun is shining from the illuminant 20 or its surroundings. Further, for example, in the case where the light emitting body 20 mimics a window by emitting a first light simulating the sky, the light extraction unit 40 is provided at a position where the observer can visually recognize the light. It is also possible to make the part 40 be perceived as if it were a window frame illuminated by the sun.
- the region may be designated as a non-light emitting region by reducing the reflectance of a part of the region of the light extraction unit 40.
- FIG. 11A is a cross-sectional view showing another configuration example of the lighting fixture 200.
- the luminaire 200a shown in FIG. 11A includes a light limiting unit 80 in addition to the configuration of the luminaire 210 shown in FIG.
- the light limiting unit 80 is arranged between the light emitting body 20 (particularly, the second light emitting unit 27) and the light extracting unit 40, and reduces the light emitted from the light emitting body 20 toward the light extracting unit 40.
- the light limiting unit 80 is composed of a member that absorbs or reflects at least a part of incident light, such as a mask.
- the light limiting unit 80 is provided with a substantially triangular shape and a member that limits the light transmittance.
- the light limiting unit 80 more specifically absorbs at least a part of the light emitted from the second light emitting unit 27 that has reached the light limiting unit 80.
- the light limiting unit 80 weakens the intensity of the light from the second light emitting unit 27 toward the light extracting unit 40 in a part of the region, so that the shadow of the light limiting unit 80 is projected on the light extracting unit 40. Will be done.
- the intensity of light is also referred to as the amount of light per unit area or the brightness.
- FIG. 11B shows how the shadow of the light limiting unit 80 is projected onto the light extraction unit 40.
- the light extraction unit 40 of this example includes a bright region 401 and a dark region 402.
- the dark area 402 is, for example, an area where the shadow of the light limiting unit 80 is projected.
- the intensity of the light emitted from the dark region 402 is smaller than the intensity of the light emitted from the bright region 401.
- FIG. 11 (c) is a top view showing an arrangement example of each member for forming the bright region 401 and the dark region 402 shown in FIG. 11 (b).
- FIG. 11C corresponds to a cross-sectional view taken along the line AA of FIG. 11B.
- the light Lo emitted from the dark region 402 or the second light emitting unit 27 is incident on the incident surface of the light extracting unit 40 to extract light. It may be arranged in the region corresponding to the dark portion region 402 on the optical path from the emission surface of the unit 40 until the light is emitted as light directed in a specific direction.
- the light limiting unit 80 is, for example, between the end of the light emitting body 20 where the second light emitting unit 27 is provided and the light extracting unit 40, on the surface of the light extracting unit 40, and is the second light emitting unit 27. It is provided so as to cover the dark region 402 or the region corresponding to the dark region 402 on the incident surface or the surface on which the light Lo emitted from the light Lo is formed, or at various interfaces existing in the light extraction portion 40. You may.
- FIG. 12 is an explanatory diagram showing another example of the light extraction unit 40 and an arrangement example of each member as seen from the visual recognition side.
- FIG. 12A shows how the shadow of the light limiting unit 80 is projected onto the light extraction unit 40.
- FIG. 12B is a top view showing an arrangement example of each member for forming the bright region 401 and the dark region 402 shown in FIG. 12 (a). Note that FIG. 12B corresponds to a cross-sectional view taken along the line BB of FIG. 12A. As shown in FIG.
- the light limiting unit 80 is arranged in a region corresponding to the entire area of the incident surface of the light extraction unit 40, and then the bright region 401 or the light limiting unit 80 in the light limiting unit 80 or A bright portion on the optical path until the light Lo emitted from the second light emitting unit 27 is incident on the incident surface of the light extraction unit 40 and is emitted as light directed in a specific direction from the emission surface of the light extraction unit 40.
- An optical member a thin film that serves as an antireflection layer with respect to the base material of the light limiting unit 80
- a hole that functions to enhance the intensity of transmitted light may be provided in the region corresponding to the region 401.
- the example shown in FIG. 12B is an example in which the hole 81 is provided in the region corresponding to the bright region 401 in the light limiting portion 80.
- the light extraction unit 40 may be provided as a modification of the light deflection unit 50 described later, or may be provided separately from the light deflection unit 50. Even in that case, the light extraction unit 40 can be provided in one lighting fixture together with the light deflection unit 50.
- FIG. 13 is a cross-sectional view showing another example of the lighting fixture according to the first embodiment.
- the lighting fixture 210 shown in FIG. 13 is an example in which the light emitting body 20 includes a light deflection unit 50 corresponding to the above-mentioned light extraction unit 40.
- the light deflection unit 50 is provided at the end of the light emitting body 20.
- the light deflection portion 50 is provided, for example, at an end portion facing the end portion where the light incident portion 24 is provided.
- the light deflection unit 50 is provided on one of the side surfaces of the light emitting body 20.
- the light deflection unit 50 changes the traveling direction of the light Lt.
- the light deflection unit 50 may change the traveling direction of the light Lt in the specific direction described above. Further, the light deflection unit 50 may have a reflection surface f51. In that case, the light deflection unit 50 may change the traveling direction of the light Lt by reflecting the light Lt that has reached the light deflection unit 50 on the reflecting surface f51.
- the reflective surface 51 is, for example, a mirror surface.
- the reflective surface f51 is, for example, a diffuse reflective surface.
- the reflective surface f51 is provided, for example, by metal vapor deposition or white paint.
- the light deflection portion 50 may be formed, for example, by cutting a part of the surface of the light emitting body 20. At this time, the cut surface becomes the reflective surface f51. Then, the end portion of the light emitting body 20 including the cut surface is referred to as a light deflecting portion 50. As described above, the light emitting body 20 may include the light deflecting portion 50.
- the light deflection unit 50 may be integrated with the light guide unit 25 or may be a separate body.
- the light deflection unit 50 may be formed at the end of the light guide unit 25. In that case, the particles 202 may be contained in the end portion.
- the member forming the light deflection unit 50 and the member forming the light guide unit 25 may be bonded together. In that case, it is assumed that the member forming the light deflection portion 50 and the member forming the light guide portion 25 are optically connected.
- both the first light emitting unit 26 and the second light emitting unit 27 are provided on the light emitting surface (front surface) which is the main light emitting surface.
- the first light emitting unit 26 and the second light emitting unit 27 are preferably provided in different regions in the light emitting surface. However, this does not apply when the particles 202 are included in the end portion where the light deflection portion 50 is formed. That is, the region where the first light emitting unit 26 is provided and the region where the second light emitting unit 27 is provided may partially overlap.
- the first light emitting unit 26 may be provided in the entire front area of the light emitting body 20, and the second light emitting unit 27 may be provided in a part of the front surface of the light emitting body 20.
- the light deflection unit 50 may have a light scattering function.
- the light scattering function may be realized by subjecting the reflecting surface f51 to a surface treatment such as embossing. Further, the light scattering function can be realized, for example, by attaching a film having reflection diffusivity to the reflection surface f51 or by applying a white coating.
- the light scattering function may be provided to the member on which the light deflection unit 50 is formed or the second light emission unit 27.
- the light scattering particles are dispersed in the member on which the light deflecting portion 50 is formed, or the second light emitting portion 27 is subjected to surface processing such as embossing or a light diffusing coating, or the light diffusing property. It may be realized by attaching the film of.
- FIG. 14 and 15 are explanatory views showing another example of the lighting fixture according to the first embodiment.
- 14 is a perspective view of the lighting fixture 220, which is another example of the lighting fixture according to the first embodiment
- FIG. 15 is a cross-sectional view of the lighting fixture 220.
- the lighting fixture 220 includes a light source 10, a light emitting body 20, a frame member 60, and a frame light source 70.
- the frame member 60 is provided at at least one position around the light emitting body 20.
- the frame member 60 is provided, for example, in a predetermined area including a certain position around the light emitting body 20.
- the periphery of the light emitting body 20 includes a space facing the side surface of the light emitting body and a space facing the main surface.
- the frame member 60 may be provided, for example, in a predetermined area in front of the light emitting body 20 (a space facing the front surface, which is the main light emitting surface). Further, the frame member 60 may be provided, for example, in a predetermined area on the side (space facing the side surface) of the light emitting body 20.
- the frame member 60 may be provided in a predetermined area behind the light emitting body (a space facing the back surface opposite to the main light emitting surface), for example. In the examples shown in FIGS. 14 and 15, the frame member 60 is provided in front of the light emitting body 20. In the examples shown in FIGS. 14 and 15, a gap is provided between the light emitting body 20 and the frame member 60, but the frame member 60 may be provided at a position in contact with the light emitting body 20.
- the frame member 60 may be arranged so as to surround the space facing the light emitting body 20 or the main light emitting surface of the light emitting body 20. Further, the frame member 60 may be arranged so as to surround both the light emitting body 20 and the space facing the main light emitting surface of the light emitting body 20. For example, the frame member 60 may be arranged around the light emitting body 20 so as to surround a space facing the main light emitting surface of the light emitting body 20 (viewing side space).
- the circumference of the light emitting body 20 may be, for example, a space of 500 mm or less.
- the frame member 60 may be provided at a position within 500 mm in at least one of the front, rear, and side directions of the light emitting body 20.
- the frame member 60 may be arranged at a position in contact with the light emitting body 20, that is, without a gap with the light emitting body 20. At this time, the light emitting body 20 and the frame member 60 may be connected with, for example, a cushioning material sandwiched between them.
- the frame member 60 is divided into a plurality of parts, and each part may be arranged at intervals.
- the arrangement direction is not particularly limited, and may be the length direction of each side of the main light emitting region, the traveling direction of the first light, or the direction from the center to the outside like a double umbrella structure. But it may be.
- the frame members 60 may be arranged in two or more directions. In this way, the frame member 60 can have various designs in its shape.
- the frame member 60 has an entrance surface f61 and an exit surface f62.
- the incident surface f61 is the surface on the non-visual side of the frame member 60
- the exit surface f62 is the surface on the visible side of the frame member 60.
- the visible side means a side that is visually recognized by an observer on the main light emitting surface side of the light emitting body 20 in a state where the lighting equipment is installed
- the non-visual side is the opposite side.
- the example shown in FIG. 14 is an example of a transmissive frame member.
- the entrance surface f61 and the exit surface f62 are formed on the same surface. More specifically, both the incident surface f61 and the exit surface f62 are formed on the surface of the frame member 60 on the visible side.
- the frame member 60 may be divided into a plurality of areas (in the example shown in FIG. 14, the frame members 60a, 60b, 60c, 60d, etc. corresponding to each side of the rectangular main light emitting region 501).
- the division example of the frame member 60 is not limited to the example shown in FIG.
- the frame light source 70 is provided on the back side of the frame member 60 (that is, the non-visual side when viewed from the observer).
- the luminaire 220 includes a frame light source 70 on the incident surface f61 side of the frame member 60.
- the frame light source 70 is, for example, an LED light source. Further, the frame light source 70 may be, for example, a laser emitting element, a fluorescent tube, or the like. Although not shown, the frame light source 70 may have a substrate and a light emitting element as in the light source 10. Further, the frame light source 70 may have a plurality of light emitting elements like the light source 10. Further, the number of frame light sources 70 may be plural, as in the case of the light source 10.
- the luminaire 220 may arrange at least one frame light source 70 for each area of the frame member 60.
- a plurality of frame light sources 70 may be provided along each side of the main light emitting region 501.
- the frame member 60 is provided corresponding to the opposite sides of the polygonal main light emitting region 501, the frame member 60 is provided along the opposite sides of the main light emitting region 501.
- a plurality of frame light sources 70 may be provided.
- the frame light source 70 emits white light, for example. Further, the color of the light emitted by the frame light source 70 may be a color other than white.
- the frame light source 70 can include, for example, a white LED light source and an orange LED light source. Further, the frame light source 70 can include, for example, a low color temperature white LED light source and a high color temperature white LED light source.
- the frame member 60 is composed of, for example, a light diffuser.
- the light diffuser may be one in which fine particles are dispersed in a transparent member, or the surface of the transparent member is provided with a surface treatment such as embossing or a film having light diffusivity. It may be the one that has been painted or the one that has been painted white.
- the frame member 60 may be composed of, for example, a transparent member and a light diffuser.
- the light diffuser may be provided on the non-visual side of the transparent member, on the visible side, or on both sides.
- the light diffuser may be formed, for example, by coating a transparent member with a thin film containing fine particles.
- the frame member 60 may be formed by applying or laminating a thin film having such light diffusivity on the transparent member.
- the frame member 60 may be composed of, for example, a reflective member and a light diffuser.
- the light diffuser is provided on the visual side of the reflective member.
- the light emitted from the frame light source 70 is incident on the frame member 60 from the incident surface f61 of the frame member 60 and is emitted from the exit surface f62.
- the frame member 60 has a light diffusion function
- the light incident on the frame member 60 becomes diffused light and is emitted from the emission surface f62.
- the frame member 60 changes the traveling direction, spreading, irradiation range, or intensity distribution of the incident light with respect to the incident light, and then changes the specific direction (in this example, the space in which the user is present, that is, the viewing side space). ) May have a function of directing to.
- the entire surface of the exit surface f62 may emit light, or only a part of the region may emit light. Further, for example, when the frame member 60 is divided into a plurality of areas, the light emitting state and the non-light emitting state may be determined for each area. By controlling the lighting state of the frame light source 70 for each area or for each position of the incident surface f61 facing the frame, a part of the area or a part of the area can be set to a light emitting state or a non-light emitting state.
- the intensity of light emitted from a part of the emission surface f62 of the frame member 60 can be increased from another region. It can be weaker than the intensity of the emitted light. That is, by providing the light limiting unit 80, it is possible to express the sun and the shade on the frame member 60 exit surface f62.
- the frame member 60 may include a light limiting unit 80. In that case, the light limiting unit 80 is provided, for example, on the optical path until the light emitted from the frame light source 70 is emitted from the emission surface f62 of the frame member 60.
- FIG. 15 shows an example in which the light source 10 and the frame light source 70 are separately provided
- the light source 10 may also have the function of the frame light source 70.
- an optical branching portion (not shown) that branches light between the light source 10 and the light emitting body 20 into light that travels toward the light incident surface of the light emitting body 20 and light that travels toward the incident surface f61 of the frame member 60 (not shown). May be provided.
- the reflection function portion of the light branch portion with a light diffusion function and use the light traveling to the incident surface f61 of the frame member 60 as diffused light.
- a side emitter type light source is used as the light source 10, and a region other than the region of the light source 10 facing the light incident surface of the light emitting body 20 is covered with a reflecting member or the like, and the region facing the light incident surface of the light emitting body 20 is used. It is also possible to direct the emitted light to the light incident surface of the light emitting body 20 and to direct the light emitted from a region other than the region to the incident surface f61 of the frame member 60.
- the light extraction unit 40 (including the second light extraction unit 40a) is also an example of the reflection type frame member 60.
- the above-mentioned light extraction unit 40 or light deflection unit 50 can be provided instead of the frame light source 70.
- the lighting fixture 220a shown in FIG. 16 is an example in which a light extraction unit 40 is provided instead of the frame light source 70.
- the light extraction unit 40 shown in this example is provided in the frame body 500.
- light emitted from the light source 10 is incident from the light incident portion 24 of the light emitting body 20, guides the inside of the light emitting body 20, guides the light emitting body 20, and inside the light emitting body 20.
- Light that is guided and emitted from the second light emitting unit 27 and whose traveling direction is deflected by the light extraction unit 40 is incident on the incident surface f61 of the frame member 60.
- the lighting fixture 220b shown in FIG. 17 is an example in which a light deflection unit 50 is provided instead of the frame light source 70.
- the light deflection unit 50 shown in this example is composed of a reflection surface f51 provided on the frame body 500.
- light is emitted from the light source 10
- the light whose traveling direction is deflected by the unit 50 is incident on the incident surface f61 of the frame member 60.
- the frame member 60 imitates the sun area or the shade area of the window frame, and the light emitted from the frame member 60 is reflected in the sun area of the window frame. Since it is possible to imitate the sunlight, even in an environment where there is actually no incoming light from the sun, it is natural as if the incoming light from the sun is being emitted through the illuminant 20. It is possible to give the observer a beautiful landscape.
- the lighting fixtures 200, 200a, 200b, 210, 220, 220a, 220b are the positions, angles or shapes of at least one of the light extraction unit 40, the frame member 60 and the light limiting unit 80, or their respective positions.
- a drive mechanism that changes the combination can be provided.
- the direction of the light simulating the sunlight can be changed or the light extraction can be performed.
- the position, size or shape of the sun or shade area formed on the portion 40 or the frame member 60 can be changed, and the observer can feel a natural landscape.
- the projection pattern of can be changed over time.
- changing the shadow projection pattern for example, it may be possible to reproduce that the altitude of the sun changes according to time and season, and to change the angle of the substantially triangular shape of the shadow.
- the position, angle, or shape of the light extraction unit 40 or the frame member 60 by the drive mechanism the light emission direction and the irradiation range simulating the sunlight can be changed with time.
- the shadow projection pattern formed on the light extraction unit 40 or the frame member 60 can be changed with time.
- a drive mechanism such as a motor may be used to perform an operation of unfolding the target member from the folded state or folding the target member from the unfolded state.
- the light emitting body 20 is not limited to the diffuser 20 that emits scattered light generated by Rayleigh scattering as described above, and is not limited to the one that emits scattered light that simulates the sky.
- the first light emitted by the light emitter 20 is not limited to the scattered light generated by Rayleigh scattering, and is not limited to the scattered light simulating the sky.
- the first light may be light that imitates light reflected on the water surface, sunlight through trees, or the like.
- the first light is not particularly limited as long as it includes light that simulates light generated from sunlight in the natural world (hereinafter, also referred to as natural light).
- the first light may include, for example, natural light and artificially created light.
- the specific configuration of the light emitter 20 is not limited, but examples of the light emitter 20 include a light guide panel, a liquid crystal display, and a backlight, which are light-transmitting members that transmit, reflect, and diffuse light by guiding the light. Examples thereof include a liquid crystal panel using the above, an organic EL (electroluminescence) panel, and the like.
- the color of a natural sky such as a blue sky (that is, transparent) is used by using a diffuser exhibiting Rayleigh scattering or a scattering ability similar to Rayleigh scattering with respect to incident light as described above. Examples thereof include the above-mentioned diffusers that reproduce (such as a sensational blue color).
- the light emitting body 20 is not limited to the above example as long as it can emit the desired first light from the main light emitting surface.
- the frame member 60 is not limited to the above example.
- the frame member 60 it is also possible to use the frame forming portion described in the PCT application (PCT / JP2019 / 020917) by the present applicant.
- the light extraction unit 40, the light deflection unit 50, and the frame member 60 that emit light that simulates sunlight in a specific direction may be simply referred to as a light extraction unit or a sunlight extraction unit without particular distinction.
- Embodiment 2 realizes an air conditioner with a lighting function by including the above-mentioned components of the lighting equipment in addition to the configuration of the so-called air conditioner (ordinary air conditioner).
- FIG. 18 is a cross-sectional view showing an example of the configuration of the air conditioner according to the second embodiment.
- the air conditioner 300 shown in FIG. 18 is a ceiling-embedded air conditioner in which the light emitter 20 and the light source 10 are incorporated.
- the air conditioner 300 includes a heat exchanger 302, a blower 303, a suction port 306, and an outlet 307 in a housing 301 having a suction port 306, an outlet 307, and an opening 308 for lighting.
- a flap 304, a filter 305, a light emitter 20, and a light source 10 provided in the air passage connecting the two are provided.
- the flap 304 is rotatably held by the housing 301 and forms a part of the air passage.
- the suction port 306 is provided, for example, at the lower part of the housing 301, that is, on the lower surface that is visible to the observer as a ceiling panel after installation.
- the position of the suction port 306 is not limited to the lower part of the housing 301, and may be provided, for example, on the side plate of the housing 301 (see the example of FIG. 20). In that case, a second suction port for sucking indoor air into the ceiling may be provided on the ceiling surface located away from the air conditioner 300.
- a filter 305 and a heat exchanger 302 are arranged at the tip of the suction port 306.
- the heat exchanger 302 is arranged in a substantially rectangular shape corresponding to the four side surfaces. May be done.
- the filter 305 and the heat exchanger 302 may be arranged in front of the blower 303 in the flow path of the air sucked from the suction port 306 (hereinafter, simply referred to as an air passage), and are not limited to the examples in the drawings. ..
- the blower 303 When the air conditioner 300 is operated, the blower 303 is activated, and the indoor air in the room flows into the housing 301 from the suction port 306.
- the air flowing into the housing 301 passes through the air passage formed by the flaps 304a and 304b and enters the heat exchanger 302 through the filter 305.
- the air Upon entering the heat exchanger 302, the air is heat-exchanged by the heat exchanger 302, then taken into the blower 303, and blown into the room from the outlet 307. Then, the air that has air-conditioned the room is sucked into the housing 301 again from the suction port 306 and circulates.
- a lighting opening 308 is provided in the lower part of the housing 301, that is, the lower panel facing the room side after installation, and the light emitting body 20 is arranged so that the main light emitting surface is located at the position of the lighting opening 308. It is installed.
- the illumination opening 308 may be provided, for example, in the center of the bottom panel of the air conditioner.
- the above-mentioned light emitting body 20 is provided so as to cover the illumination opening 308. More specifically, in the air conditioner 300, the light emitting body 20 is visibly installed on the main light emitting surface or the main light emitting region in the region surrounded by the air outlet 307 at the lower part of the air conditioner 300.
- a light source 10 is provided at a position facing the light incident surface of the light emitting body 20. In the example shown in FIG. 18, the light source 10 is provided at a position facing at least one side surface of the light emitting body 20.
- one of the flaps 304 forming a part of the air passage connecting the suction port 306 and the air outlet 307 is provided with the function of the light extraction unit 40 described above.
- the light extraction unit 40 is arranged on the air passage of the ceiling-embedded air conditioner 300.
- a flap for controlling the inflow or outflow of air (wind direction) and a flap for driving the inlet 306 and the outlet 307 on the air passage are driven. It has a drive mechanism.
- the air conditioner 300 of this example includes a light emitting body 20 and a light source 10 in addition to the configuration of such a general air conditioner.
- two flaps are provided in the outer peripheral direction along the shape of the ceiling panel of the air conditioner 300 so as to demarcate the suction port 306 and the air outlet 307 in the air passage.
- at least one of the flaps is used as the light extraction unit 40 (sunlight extraction unit). More specifically, the flap 304c arranged at the position closest to the side surface of the light emitting body 20 facing the side surface where the light source 10 is provided is used as the light extraction unit 40.
- the light emitted from the second light emitting unit 27 of the light emitting body 20 faces a specific direction (in this example, the main light emitting surface of the light emitting body 20) by the flap 304c that also functions as the light extraction unit 40. It is emitted to the space on the room side, which is the space). Further, in this example, the angle of the flap 304c can be changed by the flap drive mechanism (not shown) included in the air conditioner 300. Thereby, the emission direction of the light Lo can be controlled at the same time as the wind direction.
- FIG. 19 shows an example of an air path and an optical path of the air conditioner 300. Note that FIG. 19A shows an example of the air flow in the air conditioner 300, and FIG. 19B shows an example of the light emitted from the air conditioner 300.
- the one closer to the center is shown as the air outlet 307, and the one far from the center is shown as the suction port 306.
- the suction port 306 may be located closer to the center and the outlet 307 may be located farther from the center. Further, which is the outflow side or the inflow side may be determined according to the blowing direction of the blower 303.
- the light Li generated from the light source 10 provided in the housing 301 is incident on the light emitting body 20 also provided in the housing 301.
- the light emitting body 20 guides the light as light Lt.
- the light emitting body 20 emits the light Ls generated from the light Lt from the main light emitting surface (lower surface in the example in the drawing) while guiding the light Lt.
- the light emitting body 20 emits the light Lt that has reached the opposite end portion as the light Lo without becoming the light Ls.
- the light Lo emitted from the light emitting body 20 becomes light that is deflected by the flap 304c, which is the light extraction unit 40, and travels toward the room side.
- FIG. 20 is a cross-sectional view showing another configuration example of the suction port 306 and the air outlet 307 in the air conditioner 300.
- the air conditioner 300a shown in FIG. 20 is provided with a suction port 306 on the side plate of the housing 301.
- the air passage connected to the air outlet 307 is provided with two flaps 304 arranged in the outer peripheral direction, but only one flap is provided for one side. It may be a configuration.
- the position of the suction port 306 and the number of flaps 304 are not particularly limited.
- FIG. 21 is a cross-sectional view showing another example of the air conditioner according to the present embodiment.
- the air conditioner 300b shown in FIG. 21 is an example in which the light emitter 20 and the light source 10 are incorporated in the indoor unit of the wall-mounted type air conditioner.
- the air conditioner 300b may include an outdoor unit in addition to the indoor unit 31.
- the suction port 306 is provided, for example, on the upper portion of the indoor unit 31, that is, on the upper surface facing the ceiling after installation.
- the lighting opening 308 may be provided, for example, in the front portion of the indoor unit 31, that is, in the front portion facing the room side in the installed state.
- the lighting opening 308 may be provided at a position that can be visually recognized by the user in the installed state, and may be provided at a position other than the front surface.
- the air outlet 307 may be provided, for example, at the lower part of the housing 301, more specifically at the lower surface of the indoor unit 31 or the lower end of the front surface.
- the light emitters 20 may be basically the same as the ceiling-embedded air conditioners 300 and 300a except that the installation directions of the light emitters 20 are different.
- only one flap 304 is provided in the lower part of the indoor unit 31, but it is also possible to provide two or more flaps 304.
- a plurality of flaps 304 may be provided along the shape of the front panel of the indoor unit 31 so as to surround the light emitting body 20.
- the air conditioner 300 By providing the air conditioner 300 with such a light emitter 20 and a flap 304, it is possible to feel more natural light and wind. Further, by using an edge light type light emitting body such as the diffuser 20 described above as the light emitting body 20, it is easy to visually recognize the air conditioner without increasing the size and without disturbing the original air conditioning function. It can be embedded in the side panel.
- FIG. 22 is an explanatory diagram showing a modification 1 of the air conditioner 300.
- FIG. 22A is a cross-sectional view showing a configuration example of the air conditioner 310 as a modification 1 of the air conditioner 300
- FIG. 22B is a view of the air conditioner 310 from the visual side. It is a figure.
- the air conditioner 310 shown in FIG. 22 further includes a frame light source 70 that emits light toward a flap 304 provided in the vicinity of an end portion of the light emitting body 20 that is not provided with a second light emitting portion 27. There is.
- the light emitting surface of the frame light source 70 faces the flap 304.
- the flap 304 provided around the end portion of the light emitting body 20 where the second light emitting portion 27 is not provided is used as the second light extraction portion 40a.
- the flap 304 when the flap 304 is provided so as to surround the polygonal main light emitting region 501, it corresponds to each side of the main light emitting region 501 (however, the end portion where the second light emitting portion 27 is provided).
- a frame light source 70 may be provided along the sides).
- a frame light source 70 that emits light toward the flaps 304a, 304e, and 304g may be provided.
- the flaps 304a, 304e, and 304g can also be used as the second light extraction unit 40a (sunlight extraction unit).
- the flap 304 is provided so as to surround the polygonal main light emitting region 501, but for example, along a part of the sides such as two opposing sides of the rectangular main light emitting region 501.
- the frame light source 70 may not be provided along each side of the main light emitting region 501, such as when the flap 304 is provided. That is, the frame light source 70 may be provided for the flap 304 in the vicinity of the main light emitting region 501 where the light from the second light emitting portion 27 of the light emitting body 20 is not incident. This does not apply to the flap 304 which is not used for the sunlight expression.
- the light emitted by the frame light source 70 is deflected by each flap 304, which is the second light extraction unit 40a, and becomes light that travels toward the room side.
- the sunlight extraction portion can be provided on two or more sides of the light emitting body 20, so that the observer can feel more natural light and wind.
- the flap 304 surrounding the illuminant 20 can be perceived as if it were a window frame illuminated by the sun's rays.
- the amount of light toward the room side can be increased, sufficient brightness can be maintained as a lighting fixture.
- each flap 304 as the light extraction unit 40 or the second light extraction unit 40a may have the same light diffusion function as the light extraction unit 40 and the second light extraction unit 40a.
- each flap 304 as the light extraction unit 40 or the second light extraction unit 40a in the air conditioner is similar to the light extraction unit 40 and the second light extraction unit 40a in the lighting equipment.
- On the optical path until the light reaches (more specifically, between the light emitter 20 and the flap 304c as the light extraction unit 40, or between the frame light source 70 and the flap 304a, 304e as the second light extraction unit 40a.
- the light limiting unit 80 may be fixed on the above-mentioned optical path, or may be rotatably or displaceably held on the above-mentioned optical path.
- the air conditioner may further include a drive mechanism for the light limiting unit 80.
- the shadow projection pattern may be changed over time by changing the position, shape, or angle of the light limiting unit 80 with the drive mechanism.
- the light limiting unit 80 may be oscillated by using the air flowing through the air passage.
- a plurality of mirrors held by leaf springs may be arranged as the light limiting unit 80.
- the flap 304 which is the light extraction unit 40 and the second light extraction unit 40a, but also the light restriction unit 80, it is possible to make the observer feel as if sunlight is shining through the trees.
- the projection pattern changes depending on the wind, so that the wind can be visually felt.
- FIG. 23 is a cross-sectional view showing a further modification of the air conditioner according to the present embodiment.
- the end faces of the light source 10, the frame light source 70, and the light emitter 20 are arranged so as not to be visible from the room side.
- the air conditioner 320 has a light source 10 on a straight line in the line-of-sight direction when looking into the inside of the housing 301 from the opening of the air passage closest to the light emitting body 20 defined by the housing 301.
- the opening of the housing 301, the light source 10, the end faces of the frame light source 70 and the light emitting body 20 (particularly the second light emitting part) so that the frame light source 70 and the second light emitting portion 27 of the light emitting body 20 do not overlap. 27) is placed.
- the line-of-sight direction at this time may be, for example, the direction toward the center most when looking into the inside of the housing 301 from the opening of the air passage ( ⁇ 1 in the figure).
- the line-of-sight direction ⁇ 1 is the end ⁇ 2 of the housing 301 that defines the lower end of the inner peripheral surface on the outer peripheral side of the opening of the air passage closest to the light emitting body 20, and the upper end of the inner peripheral surface on the inner peripheral side of the opening. It may be a straight line connecting the end ⁇ 1 of the housing 301 that defines.
- the air conditioner incorporating the lighting function is a so-called blower that only blows air without performing heat exchange. You may. Even such a blower is referred to as an air conditioner in the present disclosure.
- the lighting fixture and the air conditioner with a lighting function control the light emitting state (lighting / extinguishing, light emitting color) of the light emitting body 20 and the sunlight extraction unit provided around the light emitting body 20. It may have a control unit.
- the control unit includes, for example, a first light source driving unit for turning on, dimming, or extinguishing the light source 10, and a second light source driving unit for turning on, dimming, or extinguishing the frame light source (or auxiliary light source). You may.
- the first light source driving unit and the second light source driving unit may be controlled so as to have a certain relationship with each other, or they may be controlled independently of each other.
- the light emitter 20 is a lighting panel that simulates the blue sky in fine weather seen through a window
- the bright area 401 is the sun area of the window frame in fine weather
- the dark area 402 is the shade area of the window frame in fine weather. It is preferable to be able to simulate.
- the light in the bright region 401 at the time of lighting that is, the pseudo-sunlight region is brighter than the light emitting body 20 at the time of lighting, and at the same time, the light simulating the sunlight emitted from the bright region 401 (second light).
- the brightness of the blue sky in fine weather is about 5000 [cd / m2]
- the brightness of the sun area on the white diffuse reflection surface often used for window frame members is about 30000 [cd / m2].
- the color temperature of the light when visually recognizing the blue sky in fine weather is about 20000 [K]
- the color temperature of the light when visually recognizing the sun region on the white diffuse reflection surface is about 5000 [K].
- the magnitude relationship between the brightness and the color temperature of the emitted light between the main light emitting surface or the main light emitting region of the light emitting body 20 and the bright region 401 of the sunlight extraction portion is maintained as described above.
- the sky seen through the window is not limited to the blue sky in fine weather, and when rainy weather, cloudy weather, or both are included, the main light emitting surface or main light emitting region of the illuminant 20 and the bright region 401 of the sunlight extraction portion
- the ratio of the brightness between them (or the luminous flux emitted from them) is more preferably in the range of 20: 1 to 1:30.
- the brightness of the main light emitting surface or the main light emitting region of the light emitting body 20 at the time of lighting is 100 [cd / m2] to 6000 [cd / m2], more preferably 500 [cd / m2] to 3000 [cd / m2].
- the brightness of the bright region 401 of the sunlight extraction portion at the time of lighting is 300 [cd / m2] to 30,000 [cd / m2], more preferably 1000 [cd / m2] to 12000 [cd / m2].
- the brightness of the main light emitting surface or the main light emitting region of the light emitting body 20 at the time of lighting is 100 [cd / m2] to 6000 [cd / m2], more preferably 500 [cd / m2] to 3000 [cd / m2].
- the brightness of the bright region 401 of the sunlight extraction portion at the time of lighting is 300 [cd / m2] to
- the correlated color temperature of the first light emitted from the light emitting body 20 may be 10000 [K] to 100,000 [K], more preferably 20000 [K] to 80,000 [K].
- the correlated color temperature of the second light emitted from the bright region 401 may be 2000 [K] to 7000 [K], more preferably 2500 [K] to 6500 [K].
- the difference in the correlated color temperature between the first light emitted by the illuminant 20 and the second light emitted by the bright region 401 of the sunlight extraction portion may be 20000K or more and 98000K or less.
- the ratio of the brightness (or luminous flux) of the bright region 401 and the dark region 402 at the time of lighting is preferably in the range of 100: 1 to 20: 1. , More preferably about 10: 1.
- this relationship is a condition that is established in fine weather, and is not limited to conditions such as cloudy weather and nighttime.
- the control unit may be provided in a place different from the main body of the lighting fixture or the air conditioner.
- the external server may include a control unit.
- the main body of the luminaire or air conditioner and the server including the control unit are connected via a network.
- a lighting function is incorporated in each air conditioner, and a control unit provided in the control system controls the lighting function as well as the air conditioning function. You may.
- control system in a control system that controls a plurality of lighting fixtures, the control system is provided with the above-mentioned light emitting body 20 and a light extraction unit as a pair in each lighting fixture, and the control unit included in the control system is the light emitting body 20.
- the light emitting state of the light extraction unit may be controlled together with the control of the light emitting state of.
- Lighting unit 10 Light source 12 Board 13 LED element (light emitting element) 20 diffuser (light emitter) 24 Light incident part 25 Light emitting part 26 First light emitting part 27 Second light emitting part 201 Base material 202 Particles 30 Back plate 40 Light extraction part 50 Light deflection part 60 Frame member 70 Light source for frame 501 Main light emitting area 200 , 200a, 210, 220, 220a, 220b Lighting equipment 300, 300a, 300b, 310, 320 Air conditioner 31 Indoor unit 301 Housing 302 Heat exchanger 303 Blower 304a-304h Flap 305 Filter 306 Suction port 307 Air outlet 308 Lighting Opening 500 frame
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- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
Description
以下、本開示に係る照明器具、空気調和機および制御システムの実施の形態について図面を参照して説明する。以下の実施の形態は、例にすぎず、各実施の形態を適宜組み合わせることおよび各実施の形態を適宜変更することができる。
以下、実施の形態1について、図面を参照して説明する。
図1および図2は、実施の形態1に係る照明ユニット100の例を示す概略構成図である。なお、図1は照明ユニット100の概略構成を示す斜視図であり、図2は照明ユニット100の概略構成を示す断面図である。
図3は、照明ユニット100が備える光源の概略構成を示す構成図である。また、図4は、照明ユニット100が備える光源の配置例を示す構成図である。光源10は、例えば、LED光源であってもよい。光源10は、図3に示すように、基板12およびLED素子13を備えていてもよい。図3に示す例では、LED素子13は複数備えられている。また、LED素子13は、基板12の上に配列されている。ここで、LED素子は発光素子の一例である。なお、発光素子はLED素子に限定されず、例えば、レーザー発光素子、蛍光管などであってもよい。
次に、拡散体20について、図面を参照して説明する。本例では、拡散体20の面f22の端部に光源10からの光Liが+z軸方向に入射されて、拡散体20の散乱作用により生じる光Lsが面f22から出射されることによって、拡散体20を自然な空に近い光を放つ発光体として視覚させる。拡散体20は、照明器具が備える発光体の一例である。以下、所望の第1の光を出射する発光体としての拡散体20を、単に発光体20または発光パネル20という場合がある。なお、発光パネル20の形状は板状に限定されない。
以下に、光の散乱現象の1つであるレイリー散乱について図8を参照して説明する。図8は、単一の粒子202によるレイリー散乱の散乱光強度角度分布の一例を示す図である。
α<<π・d/λ ・・・(1)
σ∝d6/λ4・・・(2)
以下に、空(特に青空)を模擬した散乱光の発生原理について図7および図8を参照して説明する。
光源10点灯時に、光Lsは、拡散体20の前面f22だけではなく背面f23からも出射する。例えば、照明ユニット100が設置される壁において、壁により分割された空間のうち、前面f22が観察者のいる側(以下内側)を向いているとする場合、背面f23より背面f23側(以下外側)に出射した光Lsは観察者からは視認されず、損失となる。また、照明ユニット100を窓としても利用する場合、外側に光Lsが出射されることは、観察者以外の外側に位置する人にとって光害となる可能性もある。
次に、本実施形態に係る照明器具200について図面を参照して説明する。図10は、実施の形態1に係る照明器具200の構成の一例を示す断面図である。図10に示すように、照明器具200は、光源10と、発光体20と、光取出し部40とを備える。
図13は、実施の形態1に係る照明器具の他の例を示す断面図である。図13に示す照明器具210は、発光体20が、上述する光取出し部40に相当する光偏向部50を備える例である。光偏向部50は、発光体20の端部に備えられる。光偏向部50は、例えば、光入射部24が設けられる端部に対向する端部に備えられる。図中の例では、光偏向部50は、発光体20の備える側面の1つに備えられている。
図14および図15は、実施の形態1に係る照明器具の他の例を示す説明図である。なお、図14は実施の形態1に係る照明器具の他の例である照明器具220の斜視図であり、図15は照明器具220の断面図である。
次に、実施の形態2に係る空気調和機について図面を参照して説明する。本実施の形態の空気調和機は、いわゆる空気調和機(通常の空気調和機)の構成に加えて、上述した照明器具の構成要素を含むことで、照明機能付きの空気調和機を実現する。
また、図22は、空気調和機300の変形例1を示す説明図である。なお、図22(a)は、空気調和機300の変形例1としての空気調和機310の構成例を示す断面図であり、図22(b)は、空気調和機310を視認側から見た図である。図22に示す空気調和機310は、発光体20の第2の光出射部27が設けられていない端部の近傍に設けられるフラップ304に向けて光を出射するフレーム用光源70をさらに備えている。
また、図23は、本実施形態に係る空気調和機の更なる変形例を示す断面図である。図23に示す空気調和機320では、光源10、フレーム用光源70および発光体20の端面を、部屋側から視認できないように配置する。より具体的には、空気調和機320は、筐体301により規定される、発光体20に最も近い風路の開口部から筐体301内部を覗いた場合の視線方向の直線上に、光源10、フレーム用光源70および発光体20の第2の光出射部27が重ならないように、筐体301の開口、光源10、フレーム用光源70および発光体20の端面(特に第2の光出射部27)を配置する。このときの視線方向は、例えば、上記風路の開口部から筐体301内部を覗いた場合に最も中心を向く方向(図中のα1)としてもよい。視線方向α1は、発光体20に最も近い風路の開口部の外周側において内周面の下端を規定する筐体301の端部β2と、当該開口部の内周側において内周面の上端を規定する筐体301の端部β1とをつなぐ直線としてもよい。
10 光源
12 基板
13 LED素子(発光素子)
20 拡散体(発光体)
24 光入射部
25 導光部
26 第1の光出射部
27 第2の光出射部
201 基材
202 粒子
30 背面板
40 光取出し部
50 光偏向部
60 フレーム部材
70 フレーム用光源
501 主発光領域
200、200a、210、220、220a、220b 照明器具
300、300a、300b、310、320 空気調和機
31 室内機
301 筐体
302 熱交換器
303 送風機
304a~304h フラップ
305 フィルタ
306 吸込口
307 吹出口
308 照明用開口
500 枠体
Claims (12)
- 吸込口および吹出口と、設置された状態でユーザが視認可能な位置に照明用開口とを有する筐体と、
前記吸込口と前記吹出口とをつなぐ風路に設けられる送風機と、
前記筐体内に設けられる第1の光源と、
前記筐体内の前記照明用開口から視認可能な位置に設けられ、前記第1の光源から出射した光を入射する光入射部、および前記光を基に生成される第1の光であって自然光を模擬した光を含む第1の光を出射する第1の光出射部を有する発光体と、
前記筐体内において前記発光体の周囲の少なくとも1つの位置に設けられ、前記発光体に入射した前記光のち前記第1の光として出射されずに前記発光体の端部に到達した第2の光、または前記第1の光源もしくは前記第1の光源とは異なる第2の光源から前記発光体を介さずに入射された第2の光を、前記筐体の外側の空間であって前記照明用開口と面する空間に向けて出射する光取出し部とを備え、
前記光取出し部が、前記風路に備えられている
ことを特徴とする空気調和機。 - 前記風路の端部において、前記筐体内に流入または流出する空気の流れを制御するフラップであって、前記筐体に回転自在または変位自在に保持されるフラップを備え、
前記光取出し部は、前記フラップの少なくとも1つにより実現される
請求項1に記載の空気調和機。 - 前記発光体は、前記発光体に入射した前記光のち前記第1の光として出射されずに導光端部に到達した前記第2の光を出射する第2の光出射部を有し、
前記光取出し部は、前記第2の光出射部から出射された前記第2の光を偏向して、前記空間に向かわせる
請求項1または2に記載の空気調和機。 - 前記光取出し部の位置、角度または形状を変化させる第1の駆動機構を備える
請求項1から3のうちのいずれか1項に記載の空気調和機。 - 前記第2の光が前記光取出し部に到達するまでの前記筐体内の光路上に設けられ、前記光取出し部に入射される前記第2の光を減少させる光制限部を備える
請求項1から4のうちのいずれか1項に記載の空気調和機。 - 前記光制限部の位置、角度または形状を変化させる第2の駆動機構を備える
請求項5に記載の空気調和機。 - 前記光取出し部に向けて前記第1の光の色温度とは異なる色温度を有する第2の光を出射する第2の光源を備える
請求項1から6のうちのいずれか1項に記載の空気調和機。 - 第1の光源と、
前記第1の光源から出射した光を入射する光入射部、および前記光を基に生成される第1の光であって自然光を模擬した光を含む第1の光を出射する第1の光出射部を有する発光体と、
前記発光体の端部および前記発光体の周囲の少なくとも1つの位置に設けられ、前記発光体に入射した前記光のち前記第1の光として出射されずに前記発光体の端部に到達した第2の光、または前記第1の光源もしくは前記第1の光源とは異なる第2の光源から前記発光体を介さずに入射された第2の光を、前記発光体の前記第1の光出射部が形成される面と面する空間に向けて出射する光取出し部とを備える
ことを特徴とする照明器具。 - 前記第2の光が前記光取出し部に到達するまでの光路上に設けられ、前記光取出し部に入射される前記第2の光を減少させる光制限部を備える
請求項8に記載の照明器具。 - 前記光取出し部または前記光制限部の位置、角度または形状を変化させる駆動機構を備える
請求項9に記載の照明器具。 - 前記光取出し部に向けて前記第1の光の色温度とは異なる色温度を有する第2の光を出射する第2の光源を備える
請求項8から10のうちのいずれか1項に記載の照明器具。 - 請求項1から7のうちのいずれかに記載の空気調和機または請求項8から11のうちのいずれかに記載の照明器具と、
前記空気調和機または前記照明器具が有する、前記発光体および前記光取出し部の発光状態を制御する制御部とを備える
ことを特徴とする制御システム。
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| EP20930588.7A EP4134597A4 (en) | 2020-04-10 | 2020-04-10 | LIGHTING DEVICE, AIR CONDITIONING AND CONTROL SYSTEM |
| PCT/JP2020/016143 WO2021205657A1 (ja) | 2020-04-10 | 2020-04-10 | 照明器具、空気調和機および制御システム |
| US17/916,586 US12078336B2 (en) | 2020-04-10 | 2020-04-10 | Lighting device, air conditioner, and control system |
| CN202080099310.7A CN115362337B (zh) | 2020-04-10 | 2020-04-10 | 照明器具、空调机以及控制系统 |
| JP2022514288A JP7341327B2 (ja) | 2020-04-10 | 2020-04-10 | 空気調和機および制御システム |
| JP2023007204A JP7438417B2 (ja) | 2020-04-10 | 2023-01-20 | 照明器具および制御システム |
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| EP4134597A4 (en) | 2023-08-16 |
| CN115362337B (zh) | 2025-09-19 |
| JP7438417B2 (ja) | 2024-02-26 |
| JP2023033605A (ja) | 2023-03-10 |
| US12203648B2 (en) | 2025-01-21 |
| CN115362337A (zh) | 2022-11-18 |
| JPWO2021205657A1 (ja) | 2021-10-14 |
| US20230151958A1 (en) | 2023-05-18 |
| JP7341327B2 (ja) | 2023-09-08 |
| US12078336B2 (en) | 2024-09-03 |
| EP4134597A1 (en) | 2023-02-15 |
| US20230417406A1 (en) | 2023-12-28 |
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