JP6395065B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device.

  As disclosed in Patent Document 1, a blind attached to a window for daylighting is widely used. A blind typically has a large number of vertically spaced slats. Each slat extends in the horizontal direction and is supported so that its inclination can be changed. Such a blind is a blindfold function that regulates the observation of the room from the outside by adjusting the inclination of the slats, and prevents the outside light from obliquely entering the room from entering the room as it is to prevent glare. A light-blocking function, a daylighting function for taking outside light from an obliquely upper side into a room as it is, and the like can be exhibited.

JP 2006-222011 A

  When the conventional blinds are completely closed, there is a problem that the outside light cannot be taken into the room through the blinds and the room becomes dark.

  Blinds are often attached to the entire surface of the window, but the upper side of the window is hard to reach human eyes, so there is no need for anti-glare, and it is not necessary to close the blind. . For this reason, it is desirable that the upper side of the blind can take in outside light even when the blind is closed. Further, since the human eye can easily reach the lower side of the blind, it is desirable to enhance the light shielding, heat shielding and blindfold functions as much as possible.

  In this way, it is desirable to give the blind different optical characteristics depending on the vertical region of the blind.

  Blinds not only serve as shading, daylighting, heat shielding and blindfolding, but are also important as part of room interiors. In particular, blinds of various colors are provided so that when the blinds are closed, a sense of unity with the shades of the room appears.

  As described above, if the blinds are divided into regions and have different optical characteristics, there is a possibility that the hue may change from region to region. Therefore, even if the optimal color blind is selected, the color may change for each region by causing the region to be divided, which may cause a considerable sense of discomfort to a person in the room.

  The present invention has been made in consideration of the above-described problems, and provides a blind and an illumination device that are excellent in at least a daylighting function and have a unified sense of color.

A blind according to an embodiment of the present invention includes a plurality of slats arranged in a first direction,
The plurality of slats are:
A first slat region having one or more light-shielding slats colored with a predetermined color;
A second slat region having one or more translucent slats disposed adjacent to the first slat region along the first direction;
At least a part of the translucent slat of the second slat region has a daylighting function;
A translucent slat adjacent to the first slat region of the second slat region is colored with a hue similar to the color of the light-shielding slat of the first slat region.

  The translucent slat of the second slat region separated from the first slat region may have a daylighting function.

  The translucent slats of the second slat region may change in color step by step from the translucent slat adjacent to the first slat region along the first direction.

The second slat region is
A third slat region having a light-transmitting slat arranged in a color different from the color of the light-shielding slat of the first slat region and spaced apart from the first slat region along the first direction; ,
The first slat region and the third slat region are arranged in contact with the first slat region along the first direction, and are adjacent to the first slat region and have a hue similar to the color of the light-shielding slat of the first slat region. A fourth slat region having a colored translucent slat;
The translucent slat of the third slat region may have a daylighting function.

  The translucent slat adjacent to the third slat region of the fourth slat region may be colored with a hue similar to the color of the translucent slat of the third slat region.

  The translucent slats of the fourth slat region may change in color step by step from the translucent slat adjacent to the third slat region along the first direction.

At least some of the translucent slats constituting the second slat region extend in a second direction not parallel to the first direction and are arranged in a third direction not parallel to the second direction. A first part of
A plurality of second portions arranged alternately with the first portions along the third direction and having a refractive index different from that of the first portions may be included.

  In the translucent slat adjacent to the first slat region of the second slat region, at least one of the first portion and the second portion has a hue similar to the color of the light-shielding slat of the first slat region. It may be colored.

  In the translucent slat adjacent to the first slat region of the second slat region, the refractive index of the second portion is smaller than the refractive index of the first portion, and the second portion is the first slat region. It may be colored with a hue similar to the color of the light-shielding slats.

At least a part of the translucent slats constituting the second slat region has a unit prism that changes a traveling direction of incident light by reflection or refraction,
The unit prism in the translucent slat adjacent to the first slat region of the second slat region may be colored with a hue similar to the color of the light-shielding slat of the first slat region.

A layer covering the surface of the translucent slat constituting the second slat region;
The layer in the translucent slat adjacent to the first slat region of the second slat region may be colored with a hue similar to the color of the light-shielding slat of the first slat region.

Blinds colored with a predetermined color;
A lower side is overlapped with the blind, and an upper side is exposed to a lighting tool,
Of the upper side of the lighting tool that is not overlapped with the blind, the side close to the blind may be colored with a hue similar to that of the blind.

The lighting tool is:
A first portion having a plurality of grooves that are spaced apart in a first direction on one surface and each extend in a second direction;
A plurality of second portions respectively provided in the plurality of grooves,
At least one of the first part and the second part close to the blind among the upper side of the daylighting tool may be colored with a hue similar to that of the blind.

The lighting tool is arranged along one surface, each having a plurality of unit prisms that change the traveling direction of incident light by reflection or refraction,
The unit prism on the side closer to the blind among the upper side of the daylighting tool may be colored with a color having a hue similar to that of the blind.

  ADVANTAGE OF THE INVENTION According to this invention, the blind which is excellent in the daylighting function and has a sense of unity in hue can be provided.

1 is a perspective view of a blind 10 according to a first embodiment of the present invention. The figure for demonstrating operation | movement of the slat of a blind. The figure for demonstrating operation | movement of the slat of a blind. The perspective view of the 2nd slat 22. FIG. The main sectional view of the 2nd slat 22. FIG. The figure which showed typically the color of the external appearance of the 1st slat 21 and the 2nd slat 22. FIG. The figure which shows the modification of FIG. The figure which shows the external appearance of the blind 10 which concerns on 2nd Embodiment. The figure which shows the internal structure which concerns on one modification of the 2nd slat 22. FIG. The figure which shows an example of the illuminating device provided with the blind 10 which covers the lower part side of the lighting tools 11, such as the window 1. FIG. Sectional drawing of the lighting tool 11 which affixed the window film 45 on the window 1. FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product.

  Further, as used in the present specification, the shape and geometric conditions and the degree thereof are specified, for example, terms such as “parallel”, “orthogonal”, “identical”, etc. are not limited to strict meanings, Interpretation should include the extent to which similar functions can be expected.

(First embodiment)
FIG. 1 is a perspective view of a blind 10 according to the first embodiment of the present invention, and FIGS. 2 and 3 are views for explaining the operation of a blind slat.

  As shown in FIG. 1, the blind 10 includes a plurality of slats 20 arranged in a first direction (for example, up and down direction) and means for supporting and operating the slats 20. As shown in FIG.2 and FIG.3, the blind 10 is arrange | positioned in the position which faces lighting tools, such as the window 1. FIG. The slat 20 is also referred to as a blade, and is formed as a thin plate-like member that is elongated in a direction not parallel to the vertical direction. The slat 20 is supported so that its inclination is variable. By adjusting the inclination of the slat 20, the blind 10 arranged at the position facing the window 1 can exhibit various functions as described later.

  In the present embodiment, the slats 20 included in the blind 10 are arranged in the first direction, that is, the vertical direction, and each slat 20 extends in the horizontal direction. The blind 10 is disposed in a room defined by the wall 2, the ceiling 3, and the floor 4, and is attached to the wall 2 so as to face the daylighting window 1 formed on the wall 2. The blind 10 includes a mounting box 12 serving as a mounting tool on the wall 2, a ladder cord 16 that hangs down from the mounting box 12 and supports a number of slats 20 at intervals in the vertical direction, and a lift for lifting the slats 20. The cord 18 and the operation grip 14 connected to the ladder cord 16 and the lifting / lowering cord 18 are provided.

  In the present embodiment, the ladder cord 16 controls the inclination of the slats 20 so that all the slats 20 included in the blind 10 are substantially parallel. Then, by operating the ladder cord 16 via the operation grip 14, the inclination of the slat 20 can be adjusted. On the other hand, by operating the lifting / lowering cord 18 via the operation grip 14, a large number of slats 20 can be pulled up so as to narrow the interval in the vertical direction in order from the lower slat 20. At this time, at least a part of the large number of slats 20 is accommodated in the mounting box 12 and the window 1 is exposed in the room. Similarly, by operating the lifting / lowering cord 18 via the operation grip 14, the slats 20 gathered upward can be lowered to a position facing the window 1. In the blind 10 according to the present embodiment, the mounting box 12, the operation grip 14, the ladder cord 16, the lift cord 18, and the mechanism for operating the ladder cord 16 and the lift cord 18 via the operation grip 14 have various known configurations. Can be adopted.

  Next, the slat 20 will be described in detail. In the present embodiment, each slat 20 is formed in a slightly curved thin plate shape as shown in FIGS. 2 and 3. Many slats 20 have the same outer contour. On the other hand, the blind 10 described here is configured such that some of the slats located above in the vertical direction can exhibit different functions from the other slats. In the present embodiment, the slats 20 included in the blind 10 are in a first slat region composed of one or more slats located in a lower region 10b that is lower in the vertical direction and an upper region 10a that is upper in the vertical direction. It is divided into a second slat region composed of one or more slats positioned and has a different configuration. Hereinafter, each slat constituting the first slat region is referred to as a first slat 21, and each slat constituting the second slat region is referred to as a second slat 22. The first slat 21 is a light-shielding slat and shields all visible light. On the other hand, the second slat 22 is a translucent slat, and at least part of the visible light is transmitted through the inside of the second slat 22. That is, even when all the second slats 22 included in the second slat region are closed (standing), at least a part of the external light is transmitted through the second slats 22. The second slat 22 does not need to transmit the incident visible light of all wavelengths, and does not need to transmit the entire amount of incident visible light.

Of the slats 20 included in the blind 10, the first slat 21 may be configured in the same manner as a known slat. Therefore, as the first slat 21, for example, a thin plate material made of a corrosion-resistant aluminum alloy, a thin plate material made of wood, or a thin plate material made of resin can be used. Such a first slat 21 has a visible light shielding property. The first slat 21 has a function of reflecting visible light and can change the traveling direction of incident light.
In addition, a functional layer for imparting heat shielding, antifouling, antibacterial, and deodorizing functions to the blind 10 may be formed on the surface of the first slat 21. As an example, a fluorine coat or a titanium oxide coat can be provided on the first slat 21. Note that the outer contour of each slat 20 may be flat without being curved, or may be different for each slat. For example, the first slat 21 can be formed into a slightly curved thin plate shape, and the second slat 22 can be formed into a flat thin plate shape. A flat thin plate is easier to form an internal structure for providing a daylighting function than a curved thin plate.

  FIG. 4 is a perspective view of the second slat 22, and FIG. 5 is a main cross-sectional view of the second slat 22. Below, the 2nd slat 22 which comprises a 2nd slat area | region is demonstrated using FIG. 4 and FIG. First, the second slat 22 includes a transparent portion 25 that allows visible light to pass therethrough. And the 2nd slat 22 is comprised so that the advancing direction of the light which permeate | transmits the transparent part 25 can be bent.

  Thus, at least a part of the light-transmitting slats in the second slat region has a daylighting function. In other words, since the external light incident on the second slat region is emitted at an angle different from the incident angle while passing through the inside of the slat, the external light from obliquely above can be taken into the room in a desired direction. it can. The area ratio of the first slat area to the second slat area occupying the entire blind is not particularly limited. However, in addition to the blind function and the light shielding function, which are the original functions of the blind, it is necessary to emphasize the daylighting function. Preferably, the area of the second slat region is larger than the area of the first slat region.

  Note that, as described above, in the present embodiment, the first slat 21 and the second slat 22 have curved thin plate-shaped contours. However, in FIG. 5, the second slat 22 is indicated by a flat thin plate-shaped contour in order to facilitate understanding of the overall optical function of the second slat 22. Moreover, the 2nd slat 22 shown by FIG.4 and FIG.5 has shown the state stood up as shown in FIG.

  In the present embodiment, among the plurality of second slats 22 arranged in the up-down direction, the second slat 22 adjacent to the first slat 21 is colored with a color of the same color as the first slat 21. Here, the color of the similar hue is a modified Munsell color system by the American Optical Society. In the case of a chromatic color, the basic ten hues of the Munsell hue ring are colors belonging to the same hue and its adjacent hues. In this case, the colors belong to the same hue. In order to obtain a more uniform feeling, it is preferable that the color belongs to the same hue as the hue to which the color of the first slat 21 belongs. The hue, brightness, and saturation of the color can be determined by comparing the color of the sample on the white plate with the color of the color chart (Munsell Book of Color).

  FIG. 6 is a diagram schematically showing the appearance colors of the first slat 21 and the second slat 22. As shown in the figure, the first slats 21 are all the same color, while the second slats 22 change in color step by step for each individual slat. The second slats 22 adjacent to the first slats 21 and several second slats 22 adjacent to the first slats 21 are colored with a hue similar to that of the first slats 21. Here, the first slat 21 is opaque and does not have a daylighting function, but a part or all of the second slat 22 has a daylighting function. Note that the second slat 22 adjacent to the first slat 21 may or may not have the daylighting function. Since the daylighting function tends to decrease when the amount of the coloring material is increased, the second slat 22 adjacent to the first slat 21 is mainly used for unifying the color, and is separated from the first slat 21. By mainly using the two slats 22 for daylighting, it is easy to adjust the balance between the design and the daylighting function. In the present embodiment, the second slat 22 adjacent to the first slat 21 is colored with a hue similar to that of the first slat 21 in order to unify the hue. The second slats 22 continuous with the adjacent second slats 22 may be either colored or uncolored. However, among the second slats 22 that are adjacent to the second slats 22 adjacent to the first slats 21, it is more preferable that some of the second slats 22 are colored with the same hue as the first slats 21 in order to unify the hue. .

As shown in FIG. 6, in order to color the second slat 22 adjacent to the first slat 21 with a hue similar to that of the first slat 21, the first slat 21 having no daylighting function and the second slat 22 having the daylighting function The boundary becomes inconspicuous, and the color of the entire blind can be unified. Moreover, the designability can be enhanced by changing the color of the second slat 22 stepwise from the slat adjacent to the first slat region upward for each slat. As a method of changing the color of the second slat 22 step by step for each slat, at least one of hue, lightness, and saturation may be changed within the range of colors belonging to similar hues. In this case, in order to clarify the change, it is preferable that at least one of the hue value, the lightness value, and the saturation value is different by one or more. Further, as will be described later, by increasing or decreasing the amount of the coloring material contained in the second slat 22 and changing the color of the second slat 22 in a stepwise manner, As much as 2 slats 22, the lighting efficiency can be increased.
Incidentally, the daylighting efficiency means the ratio of the amount of collected light to the amount of incident light.

  As shown in FIGS. 4 and 5, the second slat 22 has a base material layer 40 and a light control layer 30 supported on the base material layer 40. The base material layer 40 and the light control layer 30 extend along the plate surface of the second slat 22.

  Although the base material layer 40 is provided due to the manufacturing method of the light control layer 30 described later, it is not a particularly essential component. Therefore, as an example, it can be formed from a simple transparent or translucent resin film.

  In addition, as shown by a two-dot chain line in FIGS. 4 and 5, some function, for example, antifouling, antibacterial, deodorizing, and protective functions, is exhibited on the side of the light control layer 30 opposite to the base layer 40 It is also possible to further provide a functional layer 45 that is expected.

  The second slat 22 has a transparent portion formed by at least a part of the base material layer 40 and the light control layer 30. Thanks to this transparent portion, the second slat 22 can transmit incident light in the thickness direction of the second slat 22. As described above, the second slat 22 is greatly different from the first slat 21 having no translucency in that it has translucency.

  The light control layer 30 extends in a second direction d2 that is not parallel to the vertical direction and is arranged alternately with a plurality of first portions 31 arranged in the third direction d3 and the first portions 31 along the third direction d3. A plurality of second portions 32 formed. In the illustrated example, the first portions 31 and the second portions 32 are alternately arranged adjacent to each other. The light control layer 30 further includes a sheet-like base portion (land portion) 33 that supports the first portion 31 and the second portion 32. The base portion 33 is formed integrally with the first portion 31, and forms the light control layer main body 34 together with the first portion 31.

  As described above, the light control layer 30 includes the light control layer body 34 in which the plurality of grooves 34a are formed, and the second portions 32 formed in the plurality of grooves 34a of the light control layer body 34, respectively. The light control layer main body 34 includes a first portion 31 and a base portion 33.

  As shown in FIG. 4, in the present embodiment, the first portion 31 and the second portion 32 extend in the horizontal direction so as to be parallel to the longitudinal direction of the second slat 22. That is, the second direction d2 that is the longitudinal direction of the first portion 31 and the second portion 32 extends in the horizontal direction. The first portions 31 and the second portions 32 are alternately arranged in a third direction d3 that is orthogonal to the second direction d2 and parallel to the plate surface of the second slat 22 that is a thin plate. The plate surface of the slat 20 refers to a surface coinciding with the plane direction when the target plate-like slat 20 is observed as a whole and globally. Therefore, in the present embodiment, the plate surface of the slat 20 is a curved surface.

  As shown in FIG. 4, each slat 20 has a curved shape centering on an axis extending in the horizontal direction. Further, as indicated by an arrow A1 in FIG. 4, each slat 20 can change the inclination of the plate surface by the ladder cord 16 so as to rotate around an axis extending in the horizontal direction.

  Next, the shapes of the first portion 31 and the second portion 32 will be described. As shown in FIG. 5, the second portion 32 includes a bottom surface 35 that forms a part of the surface of the light control layer 30 opposite to the base material layer 40 side, a first side surface 36 that extends from the bottom surface 35, and a first side surface 36. 2 side surfaces 37. In the illustrated example, the spacing between the first side surface 36 and the second side surface 37 along the plate surface of the second slat 22 is separated from the bottom surface 35 along the normal direction to the plate surface of the second slat 22. As they approach each other, they are finally connected to each other. In the illustrated example, the second side surface 37 is formed as a flat surface, but the first side surface 36 is formed as a folded surface. In particular, in the illustrated example, the first side surface 36 includes a steep slope 36 a that is connected to the bottom surface 35, and a gentle slope 36 b that is located on the side away from the bottom surface 35 and is connected to the second side surface 37. The angle formed by the steep slope 36 a with respect to the normal direction to the plate surface of the second slat 22 is larger than the angle formed by the gentle slope 36 b with respect to the normal direction to the plate surface of the second slat 22.

  In the illustrated example, the second portions 32 are arranged at equal intervals along the third direction d3. In the illustrated example, the second portions 32 included in one second slat 22 are configured identically. With the configuration of the second portion 32 described above, in the illustrated example, the first portions 31 included in one second slat 22 are arranged at equal intervals along the third direction d3 and are identical to each other. It is configured.

  The arrangement pitch along the third direction d3 of the second portions 32 in the cross section shown in FIG. 5 can be 1 mm or less, for example, in the normal direction to the plate surface of the second slat 22. The height of the 2nd part 32 along can be 1 mm or less. Further, the thickness of the light control layer 30 along the normal direction to the plate surface of the second slat 22 can be set to 100 μm or more and 2 mm or less.

  The illustrated structures of the first portion 31 and the second portion 32 are merely examples, and various modifications can be considered. As an example, the cross-sectional shape of the second portion 32 can be changed to various shapes such as a triangular shape and a trapezoidal shape. Further, the plurality of second slats 22 may be configured to be the same as each other, or the shape and arrangement of at least one of the first portion 31 and the second portion 32 between the plurality of second slats 22. May be different.

  Next, the material of the first portion 31 and the second portion 32 will be described. The second slat 22 has a transparent portion 25 that allows light to pass through in the thickness direction. Accordingly, at least one of the first portion 31 and the second portion 32 arranged along the plate surface of the second slat 22 is transparent. In this specification, “transparent” means that the visible light transmittance is 50% or more. In this specification, the visible light transmittance is determined by depositing a material that will be a part to be measured on a PET film (product number: Cosmo Shine A4300, thickness 100 μm) made by Toyobo with a thickness of 1 μm. , Specified as an average value of transmittance at each wavelength when measured within a measurement wavelength range of 380 nm to 780 nm using a spectrophotometer (manufactured by Shimadzu Corporation "UV-2450", JISK0115 compliant product) .

In the present embodiment, the first portion 31 is transparent, preferably the visible light transmittance of the first portion 20 is 70% or more, more preferably the visible light transmittance of the first portion 20. Is over 90%. That is, in the present embodiment, the transparent portion 25 that changes the light traveling direction is in the normal direction to the plate portion of the first portion 31, the base portion 33, and the base layer 40 of the second slat 22. And a portion aligned with the first portion 31.
Examples of the material used for the light control layer body 34 that forms the first portion 31 and the base portion 33 formed integrally with the first portion 31 include, for example, a resin material, especially an ionizing radiation curable resin that is cured by irradiation with ionizing radiation. The cured product can be used. Examples of the ionizing radiation curable resin include an ultraviolet curable resin, an electron beam curable resin, a visible light curable resin, and a near infrared curable resin. A specific example of the resin material is an acrylic resin.

  On the other hand, the second portion 32 has a refractive index different from that of the first portion 31. In this embodiment, the 2nd part 32 has the main part 32a which functions as a binder, and the arbitrary functional content 32b disperse | distributed in the main part 32a. The refractive index of the main portion 32a is different from the refractive index of the first portion 31. As a result, the interface between the first portion 31 and the second portion 32 has a refractive index difference and reflects visible light. Function as. In order to reflect visible light incident from the first part 31 side at the interface between the first part 31 and the second part, the refractive index of the second part 32 is made smaller than the refractive index of the first part 31. It is preferable to adjust. As a material used for the main portion 32a of the second portion 32, for example, a resin material, in particular, a cured product of an ionizing radiation curable resin that is cured by irradiation with ionizing radiation can be used. Examples of the ionizing radiation curable resin include an ultraviolet curable resin, an electron beam curable resin, a visible light curable resin, and a near infrared curable resin. Specific examples of the resin material include an acrylic resin having a refractive index different from that of the acrylic resin used for the first portion 31. However, if the functional content 32b is included and the refractive index of the second portion 32 varies depending on the functional content 32b, the same acrylic resin as that used for the first portion 31 may be used.

  In the present embodiment, the second portion 32 in the second slat 22 contains a coloring material that expresses a color similar to that of the first slat 21, and the amount of the coloring material is different for each second slat 22. I am letting. As the coloring material, particles having a function of absorbing light in at least part of the visible light wavelength band can be used. As an example of the colorant, a pigment, more specifically, a black pigment such as carbon black, graphite, or titanium nitride, or a white pigment such as titanium oxide can be used in accordance with the color of the first slat 21. Further, bluish particles such as amber, blue, and purple, reddish particles, yellowish particles, and the like may be used as the colorant.

In the present embodiment, the second slats 22 arranged closer to the first slats 21 are contained in the corresponding second portions 32 such that the color of the appearance of the second slats 22 approaches the color of the first slats 21. The amount of coloring material to be increased is increased. In other words, as the distance from the first slat 21 increases, the amount of the coloring material contained in the second portion 32 in the second slat 22 is reduced.
As a result, as shown in FIG. 6, the color of the appearance of the second slat 22 disposed on the side close to the first slat 21 is visually recognized as a color that is almost the same as that of the first slat 21, and is far from the first slat 21. As the time goes on, the color of the appearance of the second slats 22 changes little by little.

  In the present embodiment, it is preferable to adjust the refractive index of the second portion 32 to be smaller than the refractive index of the first portion 31. Visible light incident from the first portion 31 side is reflected at the interface between the first portion 31 and the second portion, so that visible light incident from the first portion 31 side is a colorant contained in the second portion 22. This is because it is not easily affected.

  Note that the method of changing the color of the appearance of the second slat 22 is not limited to adjusting the amount of the coloring material contained in the second portion 32. For example, the shape and size of the second portion 32 may be changed. More specifically, the width of the second portion 32 inside the second slat 22 closer to the first slat 21 may be increased, or the depth of the second portion 32 may be increased. In this case, even if the density per unit volume of the coloring material contained in the second portion 32 is the same, the second slat 22 having a larger volume of the second portion 32 is visually recognized in a darker color.

  The color of the appearance of the second slat 22 can also be changed by adjusting the number and interval (pitch) of the second portions 32 provided in the second slat 22. For example, as the side closer to the first slat 21, the number of the second portions 32 provided in the second slat 22 is increased to narrow the pitch of the second portions 32. In this case, even if the amount of the coloring material contained in the second portion 32 is common to all the second portions 32, the larger the number of the second portions 32 provided in the second slats 22, the more the second slats 22. The color of the appearance of is visible darkly.

  Furthermore, instead of containing the coloring material in the second portion 32 or in addition to containing the coloring material in the second portion 32, the first portion 31 may contain the coloring material. In this case, the colorant contained in the corresponding first portion 31 may be increased in the second slat 22 closer to the first slat 21. However, if the first portion 31 contains a coloring material, the transmittance per unit of colorant decreases as the content of the coloring material per unit volume increases. For this reason, it is necessary to make the 1st part 31 contain a coloring material within the range which the fall of the transmittance | permeability is accept | permitted.

  Further, instead of including the coloring material in the first portion 31 and the second portion 32, or in addition to including the coloring material in the first portion 31 and the second portion 32, the function arranged in the second slat 22 Colorants may be contained in layers such as the layer (protective layer) 45 and the base material layer 40. In this case, the colorant contained in the corresponding functional layer 45 may be increased in the second slat 22 closer to the first slat 21. However, in this case as well, as the content per unit volume of the colorant contained in the functional layer 45 increases, the daylighting function is impaired, so that the functional layer 45 is within a range in which a decrease in transmittance is allowed. It is necessary to contain a coloring material.

The functional content 32b of the second portion 32 may contain a heat ray absorbing material in addition to the colorant described above. As the heat ray absorbing material, particles having absorption characteristics in the infrared light wavelength band and transmission characteristics in the visible light wavelength band are used. Specifically, transparent inorganic nanoparticles can be used as the heat-absorbing material. For example, antimony tin oxide (ATO), indium tin oxide (ITO), lanthanum hexaboride (LaB ₆ ), Aluminum-doped zinc oxide, indium-doped zinc oxide, gallium-doped zinc oxide, tungsten oxide, cerium hexaboride, anhydrous zinc antimonate and copper sulfide, or a mixture thereof can be used.

  In FIG. 6, the example which changes a color for every 2nd slat 22 which comprises a 2nd slat area | region was demonstrated. That is, it is assumed that the color of one second slat 22 is the same. On the other hand, the color may be gradually changed in one second slat 22.

  FIG. 7 is a view showing a modification of FIG. As shown in FIG. 7, each of the second slats 22 gradually changes in color within one second slat 22 within the same hue range as the first slat region in order from the side closer to the first slat region. It is colored with a gradation to change. In order to provide gradation, at least one of hue, lightness, and saturation may be changed stepwise within a range of colors belonging to similar hues. One method for realizing such gradation coloring is to change the amount of the coloring material contained in the second portion 32 in the second slat 22 stepwise along the direction in which the second portions 32 are arranged. More specifically, the closer to the first slat region, the greater the amount of coloring material contained in the second portion 32 may be.

  Moreover, you may mix the 2nd slat 22 which changes a color in a slat unit like FIG. 6, and the 2nd slat 22 which changes a color by giving a gradation in a slat.

  The light control layer 30 having the above-described configuration can be manufactured as follows. First, the light control layer main body 34 forming the first portion 31 and the base portion 33 is manufactured using a curable material such as epoxy acrylate having a characteristic of being cured by irradiation with ionizing radiation such as an electron beam and ultraviolet rays. . Specifically, a mold roll having a convex portion corresponding to the configuration (arrangement, shape, etc.) of the groove 34a of the light control layer body 34, in other words, a concave portion corresponding to the configuration (arrangement, shape, etc.) of the first portion 31. A mold roll having is prepared. A sheet that forms the base layer 40 is fed between the mold roll and the nip roll, and a curable material is supplied between the mold roll and the base layer 40 in accordance with the feeding of the sheet. Thereafter, the curable material is pressed with a mold roll and a nip roll so that the liquid curable material supplied onto the base material layer 40 is filled in the concave portion of the mold roll. At this time, as described above, the curable material is supplied onto the base layer 40 so as to be thicker than the depth of the concave portion of the mold roll, that is, so that the mold roll and the base layer 40 do not contact each other. The base portion (land portion) 33 is formed integrally with the first portion 31 from a curable material. After filling the uncured and liquid curable material between the base material layer 40 and the mold roll as described above, the light control layer body is formed by irradiating light to cure (solidify) the curable material. 34 can be formed.

  Next, the 2nd part 32 is produced using the unhardened and liquid composition containing the curable material which makes the main part 32a by hardening, and the arbitrary functional content 32b. A curable material such as urethane acrylate having a characteristic of being cured by ionizing radiation can be used as the curable material that forms the main portion 32a by being cured. First, the composition is supplied onto the light control layer main body 34 previously formed. Thereafter, the groove 34a formed between the adjacent first portions 31, that is, the portion corresponding to the convex portion of the mold roll is filled with the composition while using a doctor blade, and the groove 34a is filled. The excess composition overflowing outside is scraped off. Then, the 2nd part 32 is formed by irradiating the composition between the 1st parts 31 with ionizing radiation, and making it harden | cure. Thereby, the second slat 22 having the base material layer 40, the base portion 33 provided on the base material layer 40, and the first portion 31 and the second portion 32 provided on the base portion 33 is provided. Produced.

  Next, the operation of the blind 10 of the present embodiment described above will be described. First, by operating the operation grip 14, the inclination of a large number of slats 20 arranged at intervals in the vertical direction at the position facing the window 1 is adjusted. In the present embodiment, thin plate-like slats 20 are arranged so that their plate surfaces are parallel to each other. Then, by operating the operation grip 14, the inclination of all the slats 20 included in the blind 10 can be adjusted.

  In the state shown in FIG. 2, the plate surface of the slat 20 is inclined with respect to both the horizontal direction and the vertical direction so as to be gradually positioned downward from the outdoor side toward the indoor side. In particular, the inclination of the slat 20 is adjusted so that the plate surface of the slat 20 is substantially parallel to the incident direction of sunlight. According to such a blind 10, sunlight L21, L22, L23 can be lighted indoors with high efficiency, and indoors can be illuminated brightly with sunlight L21, L22, L23. At the same time, since the second slat 22 provided in the lower region 10b is opaque, the visibility of the room from the outside can be deteriorated by the second slat 22. In other words, the second slats 22 can prevent daylight from being looked into from the outside while allowing daylighting.

  In addition, the 1st slat 21 located in the upper area | region 10a is translucent. However, since the upper edge of the window 1 is usually arranged at a position higher than the height of the human eye, it depends on the surrounding environment in which the window 1 is arranged. Is rarely a problem. Therefore, it is difficult to assume that the blinding function of the blind 10 is significantly deteriorated by the second slat 22 being translucent.

  However, from this point of view, the upper region 10a where the second slats 22 are disposed should be higher than general human height or the line of sight of a person in the room, for example, higher than 180 cm. preferable. In the present embodiment, the second slat 22 arranged on the side closer to the first slat region is colored with a hue similar to that of the first slat region. Peeping can be effectively prevented, so that the blind 10 can sufficiently exhibit the privacy protection function while allowing sunlight to be taken into the room.

On the other hand, in the state shown in FIG. 3, the plate surface of the slat 20 extends substantially in the vertical direction.
According to such a blind 10, the light-shielding first slat 21 located in the lower region 10b exhibits a blindfold function and can be extremely effectively prevented from being looked into the room from the outside. Protection is achieved. Further, it is possible to prevent sunlight L32 and L33 from entering the room as it is without changing the traveling direction. That is, the blind 10 can exhibit a light blocking function that restricts direct light to the room from the viewpoint of anti-glare. Moreover, the blind 10 with the slats 20 closed can regulate heat transfer between the room and the outside, and can exhibit a heat shielding function.

  By the way, in the fully closed state shown in FIG. 3, in the case of the conventional blind, since the incidence of sunlight into the room is restricted, the room becomes dark, and it is necessary to use room lighting. On the other hand, according to the present embodiment, among the slats 20 included in the blind 10, a part of the second slats 22 located above the first portion 31 and the second portion 32 constituting the refractive index interface. The light control layer 30 is included. The third direction d3, which is the arrangement direction of the first part 31 and the second part 32, extends in the substantially vertical direction as shown in FIG. 5 in the fully closed state shown in FIG. 3, and In the present embodiment, the bottom surface 35 side of the second portion 32 is positioned on the outdoor side, and the first side surface 36 is positioned upward. Therefore, as shown in FIG. 5, sunlight L51 and L52 incident on the second slat 22 obliquely from above is reflected at the interface between the first portion 31 and the first side surface 36 of the second portion 32. Therefore, as shown in FIG. 3, sunlight L <b> 31 from obliquely upward is jumped up to a region above the room, typically a region above the incident second slat 22. For this reason, the daylighting by the second slat 22 can guide the sunlight L31 to a region on the far side in the room that is separated from the window 1.

  In particular, when the refractive index of the second portion 32 is lower than the refractive index of the first portion 31, the light that enters the first portion 31 and reaches the interface between the first portion 31 and the second portion 32 is totally reflected. be able to. Since total reflection does not cause a reflection loss, it is preferable in that sunlight can be collected with high efficiency in an expected direction and a temperature rise of the first slat 21 can be avoided. .

  In addition, in the present embodiment, as shown in FIG. 5, the first side surface 36 of the second portion 32 has a steep slope 36a on the outdoor side that is the light incident side and a gentle slope 36b on the indoor side. ing. For this reason, as shown in FIG. 5, the light L52 traveling in a direction relatively inclined with respect to the horizontal direction is likely to enter the steep slope 36a. The steeply inclined surface 36a can be bent so that the traveling direction of the light L52 from such a steeply inclined direction does not rise too much and can be effectively guided to the far side away from the indoor window 1. On the other hand, the light L51 traveling in the direction inclined relatively gently with respect to the horizontal direction is likely to enter the gentle slope 36b. The gentle slope 36b can be bent so that the traveling direction of the light L51 from the gentle direction of the slope does not rise too much and can be effectively guided to the far side away from the window 1 in the room.

  As described above, in the first embodiment, in the blind 10 including the first slat 21 having a normal blindfold function and a light shielding function and the second slat 22 having mainly a lighting function, Since the adjacent second slats 22 are colored with a hue similar to that of the first slats, when the first slats 21 and the second slats 22 are all closed, the color of the entire blind 10 can be made uniform. The boundary between the first slat region and the second slat region is less noticeable. In addition, since the second slats 22 are changed in color for each slat, the daylighting function can be enhanced as the distance from the first slats 21 increases, and the color uniformity of the blind 10 as a whole is further improved. improves. Thereby, according to this embodiment, the blind 10 which has the lighting function in addition to the conventional blindfold function and light-shielding function, and excellent in design can be provided.

(Second Embodiment)
In the above-described first embodiment, an example in which the blind 10 is divided into the first slat region and the second slat region has been described. However, in the second embodiment described below, the second slat region is further divided. Dividing into two, a total of three slat regions are provided.

  FIG. 8 is a view showing an appearance of the blind 10 according to the second embodiment. As shown in FIG. 8, the second slat region is divided into a third slat region and a fourth slat region. The third slat region is spaced apart from the first slat region along the first direction (vertical direction), and has one or more translucent slats. The fourth slat region is disposed so as to contact the first slat region and the third slat region along the first direction, and the translucent slat adjacent to the first slat region is colored with a hue similar to that of the first slat region. Has been. Hereinafter, one or more slats constituting the third slat region are referred to as third slats 23, and one or more slats constituting the fourth slat region are referred to as fourth slats 24.

  In the present embodiment, both the third slat region and the fourth slat region have translucent slats having a daylighting function. However, in the fourth slat region, the color of the slat of the first slat region is similar to the color of the slat. Slats with lower lighting efficiency than the slats in the third region are used. However, in the fourth slat region, a translucent slat having no daylighting function may be used.

The third slat region is disposed on the uppermost side of the blind 10, and the fourth slat region is disposed between the third slat region and the first slat region disposed on the lowermost side.
Since the third slat region is arranged on the uppermost side of the blind 10, the daylighting efficiency is made higher than that of the fourth slat region so that more outside light can be taken into the room. The third slat region is different in color and hue from the slats of the first slat region. Note that different hues mean that the hues are not the same.

  When it is desired that the third slat 23 constituting the third slat region has a function other than the daylighting function, for example, a function of absorbing heat rays or suppressing the straight transmitted light, the first portion 31 and the second portion 32 of the third slat 23. At least one of them may contain a heat ray absorbing material or a specific coloring material. As described above, at least one of the first portion 31 and the second portion 32 of the third slat 23 contains the coloring material, and thus, some color may appear on the appearance of the third slat 23. However, the appearance color of the third slat 23 does not have to be related to the appearance color of the first slat 21.

  Since the fourth slat region is disposed between the first slat region and the third slat region, among the fourth slats 24 constituting the fourth slat region, the fourth slat 24 adjacent to the first slat region is The first slat 21 is colored in a similar hue. In addition, among the fourth slats 24 constituting the fourth slat region, the fourth slats 24 adjacent to the third slat region are preferably colored with a hue similar to that of the third slat 23. In doing so, it is desirable to change the color of the fourth slat 24 constituting the fourth slat region stepwise from the side closer to the first slat region to the side closer to the third slat region. A specific means for changing the color of the fourth slat 24 is, as described in the first embodiment, a coloring material contained in at least one of the first portion 31 and the second portion 32 in the fourth slat 24. Change the amount and type of the second portion 32, change at least one of the shape, size, number and interval of the second portion 32, and change the amount and type of the colorant contained in the functional layer 45 and the base layer 40. That's fine.

  The color of each fourth slat 24 constituting the fourth slat region is changed in color step by step from the fourth slat 24 adjacent to the first slat region upward, and / or the third slat region. By changing the color stepwise from the fourth slat 24 adjacent to each slat downward, even if the third slat region is colored with any color, the first slat region and the fourth slat The boundary with the slat region or / and the boundary between the fourth slat region and the third slat region are less noticeable, and the color of the entire blind 10 can be made uniform.

  As a modified example of the second embodiment described above, the blind 10 is divided into four or more slat regions, and two slat regions arranged apart from each other in the first direction (vertical direction) among these slat regions. May be colored with colors that are not similar to each other. In this case, by gradually changing the color of each slat constituting one or more slat regions arranged between these two slat regions, the boundary between the two slat regions that are not of similar colors is made inconspicuous. be able to.

  Also in the second embodiment, instead of changing the color of the fourth slat 24 in units of slats, gradation coloring is performed to change the color of the fourth slat 24 within one slat as shown in FIG. Also good. By doing in this way, the fall of the beauty | look by the color changing rapidly can be suppressed.

  In the first and second embodiments described above, an example in which the first portion 31 and the second portion 32 as shown in FIGS. 4 and 5 are provided inside the second slat 22 in the blind 10 has been described. The internal structure of the second slat 22 is not limited to the examples shown in FIGS. 4 and 5. For example, FIG. 9 is a diagram showing an internal structure according to a modification of the second slat 22, which has a prism surface 50 along the third direction, and the traveling direction of light by reflection and refraction at the prism surface 50. The light is taken in by bending. The prism surface 50 in FIG. 9 has a sheet-like main body 51 and a large number of unit prisms 52 arranged on the main body 51, and the main body 51 and the unit prism 52 can transmit light. So that it is made of a transparent material. The individual unit prisms 52 are arranged along the third direction, which is the short direction of the second slat 22, and extend in the second direction (the front and back direction of the paper surface) which is the longitudinal direction of the second slat 22. . The individual unit prisms 52 are arranged on the prism surface 50 without any gap.

  The unit prism 52 has a first surface 52 a and a second surface 52 b having an angle inclined with respect to the prism surface 50. In the second slat 22, the light incident on the unit prism 52 from one of the first surface 52a and the second surface 52b is reflected by the other of the first surface 52a and the second surface 52b of the unit prism 52, The traveling direction of sunlight is changed, and the sunlight can pass through the second slat 22.

  In the present embodiment, at least the side close to the first slat region of the prism surface 50 is colored with a hue of a similar color to the first slat region. When the prism surface 50 is colored, at least a part of the unit prisms 52 may contain a coloring material. Alternatively, a coloring material may be included in at least a part of the main body 51 of the prism surface 50.

(Third embodiment)
In the first and second embodiments described above, the blind 10 that covers the entire daylighting tool such as the window 1 is borne in mind, but the present invention provides a blind 10 that covers a part of the daylighting tool such as the window 1. Is also applicable.

  FIG. 10 is a diagram illustrating an example of an illumination device including a blind 10 that covers a lower side of the lighting tool 11 such as the window 1. The blind 10 in FIG. 10 is configured by arranging a plurality of known slats similar to the first slats 21 described in the first and second embodiments in the first direction (for example, the vertical direction). A mounting box 12 that can store at least a part of the slat 21 is provided at the top of the blind 10. In the present embodiment, both the slat 21 and the mounting box 12 are colored in the same color. To do.

  The lighting tool 11 in FIG. 10 may be a single window 1 or a window film 45 attached to the window 1. Below, the lighting tool 11 which stuck the window film 45 to the window 1 is mainly demonstrated. FIG. 11 is a cross-sectional view of the lighting tool 11 in which the window film 45 is attached to the window 1. The window film 45 of FIG. 11 includes a first portion 41 and a plurality of second portions 42 as its internal structure. The first portion 41 is formed to be spaced apart in the first direction (vertical direction) on one surface 1a of the window film 45, and has a plurality of grooves each extending in the second direction (horizontal direction). A plurality of second portions 42 are formed by filling these grooves with a predetermined filling material.

  The window 1 is pasted on one surface 1a via an adhesive layer 43, and a base material layer 44 is provided on the other surface 1b.

  FIG. 10 shows an example in which the cross-sectional shape of the second portion 42 is trapezoidal, but the cross-sectional shape of the second portion 42 is not necessarily trapezoidal, and may be rectangular, for example.

  The first portion 41 and the second portion 42 can be adjusted to have a desired transmittance in the visible light region. For example, the average transmittance in the visible light region is adjusted to 70% or more. When the average transmittance satisfies the above range, the transmittance in the visible light region as a whole of the window film 45 can be sufficiently obtained, so that the appearance of the window film 45 becomes dark and sufficient lighting cannot be secured indoors. It is possible to suppress the lack of illuminance in the room.

  The refractive index of the first portion 41 and the refractive index of the second portion 42 are different, and the light that has passed through the first portion 41 and entered the side surface of the second portion 42 is reflected by this side surface and is obliquely upward. Be jumped up to. Thereby, external light can be taken in the indoor ceiling direction.

  In this embodiment, the window film 45 is colored in the same hue as the blind 10 so that the boundary between the lighting tool 11 such as the window 1 and the blind 10 is not conspicuous. For the coloring of the window film 45, for example, at least one of the first portion 41 and the second portion 42 in the window film 45 may contain a colorant having a hue similar to that of the blind 10. If the coloring material is included, the lighting efficiency may be deteriorated. Therefore, at least one of the first portion 41 and the second portion 42 on the side close to the blind 10 increases the content of the coloring material, so that the blind 10 As the distance increases, it is desirable that the content of at least one coloring material of the first portion 41 and the second portion 42 is reduced to suppress a decrease in lighting efficiency.

  Further, instead of increasing or decreasing the content of the coloring material, the shape, size, number, and interval of the second portion 42 may be varied to change the color on the appearance of the window film 45.

  Even in the case of the daylighting instrument 11 in which the first part 41 and the second part 42 described above are integrally incorporated in the window 1 without providing the window film 45, the first part 41 on the side close to the blind 10 and At least one of the second portions 42 increases the colorant content, and as the distance from the blind 10 increases, the content of at least one colorant of the first portion 41 and the second portion 42 decreases and the lighting efficiency decreases. It is desirable to suppress this.

  As described above, in the third embodiment, when the normal blind 10 colored in a predetermined color is provided only on the lower side of the lighting tool 11 such as the window 1, the lighting that is not covered with the blind 10. Since the upper side of the tool 11 is colored with a hue similar to that of the blind 10, the boundary between the blind 10 and the lighting tool 11 becomes inconspicuous, and the entire lighting device including the blind 10 and the lighting tool 11 has a sense of unity in color. Can be issued.

  The aspect of the present invention is not limited to the individual embodiments described above, and includes various modifications that can be conceived by those skilled in the art, and the effects of the present invention are not limited to the contents described above. That is, various additions, modifications, and partial deletions can be made without departing from the concept and spirit of the present invention derived from the contents defined in the claims and equivalents thereof.

  2 walls, 3 ceilings, 4 floors, 10 blinds, 11 daylighting tools, 12 mounting boxes, 14 operation grips, 16 ladder cords, 18 lifting cords, 20 slats, 21 first slats, 22 second slats, 23 third slats, 24 4th slat, 30 Light control layer, 31 1st part, 32 2nd part, 40 Base material layer, 50 Prism surface, 51 Body part, 52 Unit prism

Claims (2)

Blinds colored with a predetermined color;
A lower side is overlapped with the blind, and an upper side is exposed to a lighting tool,
Of the upper side of the daylighting tool that is not superimposed on the blind, the side close to the blind is colored with a hue similar to that of the blind. The lighting tool is:
A first portion having a plurality of grooves that are spaced apart in a first direction on one surface and each extend in a second direction;
A plurality of second portions respectively provided in the plurality of grooves,
2. The lighting device according to claim 1, wherein at least one of the first portion and the second portion on the side close to the blind among the upper side of the daylighting tool is colored with a hue similar to that of the blind.