JP6001904B2 - Blindfold device - Google Patents

Description

  The present invention relates to a blindfold device disposed between a window surface of a building and a viewing space.

  As an effective means for preventing illegal intrusion into a building, there is securing of natural surveillance. In other words, in addition to improving the performance of the hardware, such as improving the crime prevention property of the target house, by ensuring the visibility to the building and each window of the building from neighboring residents and people who pass around the building, The idea is to focus on obtaining deterrence against illegal intrusion. According to the criminal behavior survey of intruders, 60% of the reasons for giving up trying to invade the inside of a building are cases where they are aware of the eyes of their neighbors. When focusing only on this point, it is only necessary to increase the line-of-sight transmittance of a hedge or fence that separates the building site from the public road. For example, a configuration in which such a hedge or fence is not installed at all is also conceivable. . On the other hand, if the line-of-sight transmission from the public road to the building site is increased, the inside of the building (inside the living room) becomes visible through the windows of the building, and the privacy of the resident of the building is rejected. The problem of being disturbed arises.

  In order to solve such a problem, for example, Patent Document 1 discloses a gate door in which a plurality of plate-like members are arranged in the left-right direction to form a louver-shaped light shielding portion. More specifically, the gate sets the depth d of the plate-like member to be larger than the width w of the gap surrounded by the plate-like members adjacent to each other. That is, by setting d ≧ w, the line of sight obliquely forward is blocked. Thereby, it is said that it is possible to prevent the inside of the gate from being looked into through the gate body from the outside of the gate, and it is conceivable to use the configuration as a blindfold for partitioning the building site and the public road.

Japanese Patent Laid-Open No. 08-284569

  However, since the configuration of Patent Document 1 is a disclosure of a gate that is arranged without sufficient consideration with respect to a positional relationship with a window installed in a building, depending on the arrangement of the gate with respect to the window, the entrance of an intruder Not only can you not get much line of sight from the public road in front of the window, but there are also cases where you can see the depths of the living room through the window more than necessary, and simply installing such a gate is a privacy There is a possibility that it is not possible to effectively obtain the window and the prospect of the window front.

  The present invention has been made to solve such a problem, and provides a blindfold device capable of both ensuring privacy in a living room and ensuring visibility of an outdoor window front. With the goal.

The blindfold device according to the present invention includes a pair of window-side frame portions and extends vertically or substantially perpendicularly to the window surface between a window surface of the window provided in the living room and a viewing space in which the window surface can be visually recognized. A line-of-sight device provided by arranging a plurality of long vertical lattice members having the same cross-sectional shape, and the line-of-sight control unit having the same line-of-sight transmittance higher than the line-of-sight control unit. A line-of-sight non-control unit configured by arranging a plurality of long vertical lattice members having a cross-sectional shape, and the line-of-sight control unit is disposed at a position farther than the line-of-sight non-control unit when viewed from the window surface. It is characterized by being continuous to the line-of-sight non-control unit. The blindfolding device according to the present invention includes a pair of window-side frame portions and a window surface of a window provided in a living room, and a viewing space in which the window surface can be viewed vertically or substantially perpendicular to the window surface. In the living room, a line-of-sight control base point, which is a base point for controlling the line of sight from the viewing space toward the room, is set in the living room at a position spaced from the window surface to the living room side. A blindfolding device installed in relation to the line-of-sight control base point, which controls the line of sight directed from the viewing space to the window surface, and allows the front part of the window surface and a part of the living room to be visually recognized from the viewing space. The line-of-sight control unit includes an inner edge portion of the first window-side frame portion located far from the viewing space and a line-of-sight control base point of the pair of window-side frame portions of the line of sight toward the living room from the viewing space. Only a line of sight that intersects the first virtual line to be connected is allowed.

  The blindfold device according to the present invention is provided with a line-of-sight control unit that controls the line of sight directed from the viewing space to the window surface so that the front part of the window surface and a part of the room can be viewed from the viewing space. In addition, the line-of-sight control unit allows only the line of sight that crosses the first imaginary line connecting the inner edge of the first window side frame and the line-of-sight control base point of the line of sight toward the living room from the viewing space. It is configured. With such a configuration, a passerby who passes through the viewing space can visually recognize the front part of the window surface via the line-of-sight control unit, and the first set near the window surface in the living room. Only a part of the range where the virtual line and the line of sight intersect can be visually recognized. That is, it is possible to restrict the line of sight toward the back of the room without intersecting with the first virtual line. Here, a part of the living room that can be seen by a passerby is an indoor part that can obtain scenery and ventilation from the window in the living room, but does not need to block the line of sight from outside such as a viewing space for privacy reasons. (Part of daily life that is not important for privacy). In this way, by setting the line-of-sight control base point in consideration of the privacy in the room, the line-of-sight control unit can limit the line of sight from the viewing space only to the part where the privacy in the room is not important. Residents in the living room can obtain the line of sight from the viewing space on the entire window surface, and can limit the line of sight from the viewing space to a part of the room where privacy is not important. It has become. As described above, it is possible to ensure both the privacy in the living room and the visibility of the outdoor window front.

  Further, in the blindfold device according to the present invention, a line-of-sight non-control unit is provided, which increases the line-of-sight transmission more than the line-of-sight control unit and allows the front part of the window surface and a part of the living room to be visually recognized from the visual space. The portion is arranged at a position closer to the window surface side than the second imaginary line connecting the outer edge portion of the second window side frame portion located near the viewing space in the pair of window side frame portions and the line-of-sight control base point, It is preferable that the line-of-sight control unit is arranged at a position farther than the line-of-sight non-control unit when viewed from the window surface and is continuous with the line-of-sight non-control unit. That is, the line-of-sight non-control unit is provided at a position close to the window surface, and the line-of-sight control unit is provided at a position farther than the line-of-sight non-control unit when viewed from the window surface and is continuous to the line-of-sight non-control unit. At a position relatively far from the window, the angle between the line of sight toward the window surface and the window surface is large, and accordingly, the line of sight tends to pass from the viewing space toward the back of the living room. Here, by controlling the line of sight from the line-of-sight control base point to the back by setting the area as the line-of-sight control unit, the resident in the room can move away from the viewing space even at a position far from the window surface. A line of sight can be obtained at the front part of the window surface, and further, the line of sight from the viewing space can be limited to a part of the living room where privacy is not important. On the other hand, the line of sight from the area closer to the window surface, specifically, the area closer to the window surface than the second imaginary line connecting the line-of-sight control base point and the outer edge of the second window side frame portion, is particularly control of the line of sight. Even if not, the line of sight does not pass deeper than the line-of-sight control base point (that is, all lines of sight that may cause privacy problems are blocked by the second window side frame, so only the line of sight that intersects the first virtual line) As a result, it remains in the part of the room that does not place importance on privacy. In this way, by making the area where privacy can be secured without performing line-of-sight control as a line-of-sight non-control part with high line-of-sight transmission, it becomes possible to improve the visibility of the front part of the window and improve crime prevention performance be able to. Further, since it is not necessary to control the line of sight, the cost and burden at the time of design and work can be reduced.

  Moreover, in the blindfold device according to the present invention, the line-of-sight control unit is preferably configured by arranging a plurality of long vertical lattice members having the same cross-sectional shape in a plane position perpendicular or substantially perpendicular to the window surface. . This makes it possible to form the line-of-sight control unit very easily.

  Further, in the blindfold device according to the present invention, each vertical lattice member includes a pair of side surface portions that are parallel to the window surface and defines the depth of the vertical lattice member, and is installed at a position close to the line-of-sight non-control unit. Side edge of the side surface portion of the first vertical lattice member, and side edge of the side surface portion of the second vertical lattice member that is adjacent to the first vertical lattice member and is located at a position far from the line-of-sight non-control unit Are spaced apart from each other, and the distance between the first vertical lattice member and the second vertical lattice member is such that the side edge on the window surface side of the first vertical lattice member and the second vertical lattice member It is preferable that the straight line connecting the side edge of the viewing space is set in a state parallel to the second imaginary line. In the first vertical lattice member and the second vertical lattice member having such a configuration and positional relationship, the side edge on the window surface side of the first vertical lattice member and the viewing space side of the second vertical lattice member A straight line connecting the side edges defines a line of sight that enters the deepest part of the living room among lines of sight passing through the gaps between the vertical lattice members, that is, a line of sight related to the boundary portion of the viewing angle. The viewing angle can be controlled by adjusting the interval between the vertical lattice members. Here, if the line of sight related to the boundary portion of the viewing angle is in a state parallel to the second imaginary line, the field of view controlled by the gap between the vertical lattice members is from the window surface of each vertical lattice member. Regardless of the distance, it always remains within the range that intersects the first imaginary line. Also, among the parts that allow visual recognition from outside in the living room, it is possible to suppress the line of sight to the living room only at a position closer to the window surface (that is, at the boundary between the part that wants to protect privacy and the part that allows visual recognition). It is possible to prevent the gaze from being concentrated near a certain gaze control base point). Accordingly, a straight line connecting the side edge of the first vertical grid member on the window surface side and the side edge of the second vertical grid member on the viewing space side is the second imaginary distance between the vertical grid members. By setting the state parallel to the line, the privacy in the living room can be more reliably protected.

  Further, in the blindfold device according to the present invention, each vertical lattice member includes a pair of side surface portions that are parallel to the window surface and defines the depth of the vertical lattice member, and is installed at a position close to the line-of-sight non-control unit. Side edge of the side surface portion of the first vertical lattice member, and side edge of the side surface portion of the second vertical lattice member that is adjacent to the first vertical lattice member and is located at a position far from the line-of-sight non-control unit Are spaced apart from each other, and the distance between the first vertical lattice member and the second vertical lattice member is such that the side edge on the window surface side of the first vertical lattice member and the second vertical lattice member It is preferable that the straight line connecting the side edge portion on the viewing space side is set to increase stepwise from the window surface from the state parallel to the second imaginary line. In the first vertical lattice member and the second vertical lattice member having such a configuration and positional relationship, the side edge on the window surface side of the first vertical lattice member and the viewing space side of the second vertical lattice member A straight line connecting the side edges defines a line of sight that enters the deepest part of the living room among lines of sight passing through the gaps between the vertical lattice members, that is, a line of sight related to the boundary portion of the viewing angle. The viewing angle can be easily controlled by adjusting the interval between the vertical lattice members. Here, if the line of sight related to the boundary portion of the viewing angle is in a state parallel to the second imaginary line, the field of view controlled by the gap between the vertical lattice members is from the window surface of each vertical lattice member. Regardless of the distance, it always remains within the range that intersects the first imaginary line. On the other hand, among the vertical lattice members constituting the line-of-sight control unit, the vertical lattice members arranged at positions far from the window surface are set to have a wide viewing angle because the distance from the line-of-sight control base point is also increased at the same time. However, it is possible to limit the line of sight to the range intersecting the first virtual line. At the same time, by setting a wide viewing angle, the visibility of the front part of the window can be improved, and the crime prevention performance can be improved. Therefore, the distance between the first vertical lattice member and the second vertical lattice member is set such that the side edge portion on the window surface side of the first vertical lattice member and the side edge on the viewing space side of the second vertical lattice member. From the state where the straight line connecting the part is parallel to the second imaginary line, it is set to gradually increase as it moves away from the window surface, thereby protecting the privacy of the room and improving the crime prevention performance. Can be made. In addition, by installing the vertical grid member in this way, the interval between the vertical grid members of the line-of-sight control unit increases as the distance from the line-of-sight non-control unit increases, and the appearance of the blindfold device can be improved. It becomes.

Further, in the blindfolding device according to the present invention, the width of each vertical lattice member is set to a constant value A, and the first vertical lattice member v ₁ , the second vertical lattice member v ₂ ,. the n + 1 and the longitudinal grid members v _{n + 1,} the distance between the longitudinal grid members, first gap S ₁ from a position close to the window surface in _order, the second gap S ₂ ..., when setting as the n intervals S _n, the following It is preferable to set with the relationship of Formula (A), Formula (B), and Formula (C). By erecting the vertical lattice member based on such a formula, it is possible to easily manage the interval between the vertical lattice members while ensuring the control of the line of sight, and manufacturing the blindfold device. It can be easily done.

ただし、Δｓは定数とし、また、ｎ＝１〜Ｎ

However, Δs is a constant, and n = 1 to N

  In the blindfold device according to the present invention, it is preferable that either one or both of the line-of-sight control unit and the line-of-sight non-control unit are openable and closable. By making it openable and closable, it is possible to close in a scene where the line of sight from the viewing space should be completely blocked, while securing the crime prevention by keeping it open at normal times.

  Further, the blindfold device according to the present invention includes a plurality of long plural pieces having the same cross-sectional shape between a window surface provided in a living room with a pair of window side frame portions and a viewing space in which the window surface can be visually recognized. The vertical lattice members are arranged in a plane position perpendicular or substantially perpendicular to the window surface, and the interval between the adjacent vertical lattice members is set to increase stepwise as the distance from the window surface increases. It is characterized by being.

  In the area close to the window surface, if the viewing angle is too large, the line of sight reaches the back of the room, so the line of sight remains in a part of the room near the window that does not cause privacy problems. On the other hand, it is possible to secure a sufficient line of sight with respect to the front of the window even if the viewing angle is small. In a region far from the window surface, if the viewing angle is too small, the line of sight reaching the front of the window decreases, while the distance from the window surface is far away, so the line of sight into the living room can be reduced even if the viewing angle is increased. You can stay in a part of the neighborhood. Therefore, in the blindfolding apparatus according to the present invention, the viewing angle is reduced by reducing the interval between the vertical lattice members in the region close to the window surface, and in the region far from the window surface, the vertical lattice member The viewing angle is increased by increasing the interval therebetween. Thereby, ensuring of privacy in the living room and securing of the prospect of the front part of the outdoor window can be achieved at the same time.

  According to the present invention, it is possible to achieve both ensuring privacy in the living room and ensuring visibility of the window front outside the room.

It is a figure which shows the structure of the building ST to which the blindfold apparatus which concerns on embodiment of this invention, and the said blindfold apparatus are applied. It is the figure which expanded the living room of the building. It is the figure which expanded the blindfold apparatus which concerns on embodiment of this invention. It is a model figure for demonstrating the design method of a blindfold apparatus. It is a figure which shows the structure of the blindfold apparatus which concerns on a comparative example. It is a figure which shows the structure of the blindfold apparatus which concerns on a comparative example. It is a figure which shows the blindfold apparatus which concerns on a modification. It is a figure which shows the blindfold apparatus which concerns on a modification. It is a figure which shows the blindfold apparatus which concerns on a modification. It is a figure which shows the blindfold apparatus which concerns on a modification. It is a figure which shows the blindfold apparatus which concerns on a modification. It is a figure which shows the blindfold apparatus which concerns on a modification.

  Hereinafter, a blindfolding apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating a configuration of a blindfold device 1 according to the present embodiment and a building ST to which the blindfold device 1 is applied. FIG. 1A is a diagram of the configuration viewed from above, and FIG. 1B is a diagram of the configuration viewed from the viewing space VE side (public road side). FIG. 2 is an enlarged view of the room IN of the building ST. FIG. 3 is an enlarged view of the blindfold device 1 according to the present embodiment. As shown in FIG. 1, the building ST includes outer walls OW1 and OW2, and has a living room IN inside. An external structure FS such as a hedge or a fence is arranged between the site PR of the building ST and the public road LD. The public road LD extends along a direction D1 (here, perpendicular to or substantially perpendicular to the outer wall OW1) intersecting the outer wall OW1. A direction D1 that is a direction in which the public road LD extends corresponds to a traveling direction of a passerby who can see the building ST from the public road LD. The hedge of the external structure FS also extends along the direction D1. The living room IN is configured to be surrounded by an outer wall OW1 that is perpendicular or substantially perpendicular to the direction D1, an outer wall OW2 that extends along the direction D1 on the public road LD side, and an inner wall IW in the building ST. In the living room IN, a window surface 100 of a window provided with a first window side frame portion 101 and a second window side frame portion 102 is provided. The window surface 100 is provided in a part of the outer wall OW1, and in this embodiment, a surface that is in the window and coincides with the outer peripheral surface of the outer wall is defined as the window surface. The first window side frame portion 101 is located on the opposite side of the public road LD (that is, located far from the viewing space VE), and the second window side frame portion 102 is located on the public road LD side (ie, the viewing space). Located near VE). In the present invention, the “living room” refers to a space requiring privacy in a residential building, such as a toilet or a washroom, in addition to a living room or a private room of each person.

  Thus, for the building ST in which the window surface 100 is set, a visual recognition space VE that allows the window surface 100 to be visually recognized is set on the public road LD. The visual recognition space VE is a space that is virtually set when the building ST and the blindfold device 1 are designed. The visual recognition space VE is a space that is set to ensure the line of sight of a passerby passing through the public road LD with respect to the front part FW of the window surface 100. The front part FW corresponds to the standing position of the intruder who performs the intrusion work when the intruder enters the room IN from the window surface 100. The visual recognition space VE is an area provided according to the relationship with the window surface 100, and is an area where a passerby can direct a line of sight for 1 to 2 seconds while passing through the window surface 100. A window surface facing a public road (for example, the window surface 200 in FIG. 8) or a window surface (for example, the window surface 100 in FIG. For the window surface 300) in FIG. 8, it is sufficient if a viewing space of about 2 m is obtained. Moreover, in the setting position of the visual recognition space VE, as shown in FIG. 1, the window surface 100 is formed in the window surface 100 installed in a horned shape (right-angled in the present embodiment) with respect to the public road LD. 2m (= the length of the portion indicated by L in FIG. 1) starting from a plane that is the starting point, and the passerby passes through the visual recognition space VE while looking sideways at the window surface 100. Will be. With respect to the window surface 200 as shown in FIG. 8, a passerby passes through the line-of-sight space VE while approaching the window surface 200, and therefore at an arbitrary position until reaching the window surface 200. It is sufficient if 2 m is secured.

  A blindfold device 1 is provided between the window surface 100 and the viewing space VE. The blindfold device 1 is provided so as to extend in a direction intersecting with the window surface 100, here perpendicular to or substantially perpendicular to the window surface 100. The blindfold device 1 is provided at a position corresponding to the visual recognition space VE in the external structure FS. It should be noted that the line of sight where the blindfold device 1 is not provided is completely blocked by hedges or implantation. The blindfold device 1 secures the line of sight from the visual space VE to the front part FW of the window surface 100 to improve the line of sight, while limiting the part of the line of sight toward the living room IN to prevent crime. It has a function to improve the performance and protect the privacy at the same time. The detailed configuration of the blindfold device 1 will be described later.

  On the other hand, the living room IN serves as a base point for controlling the line of sight from the visual space VE into the living room IN at a position set back from the window surface 100, that is, a position separated from the window surface 100 toward the living room IN. A line-of-sight control base point BP is set. The line-of-sight control base point BP is a point that is virtually set when the building ST and the blindfold device 1 are designed. For example, when the line-of-sight control base point BP is set to the inner wall IW in the back, when installing an indoor laundry dryer or the like about 90 cm from the inner surface of the outer wall OW1 on which the window surface 100 is provided, It is set to about 30 cm from the inner surface of the outer wall OW1. In addition, when installing furniture such as a chest, it may be the edge of the furniture, and it is possible to control the line of sight from the position at least about 1 m from the window surface 100 to the living room IN side. If so, it can be set at an arbitrary position. The line-of-sight control base point BP is a position set back from the window surface and is farther from the first window side frame portion 101 of the window surface 100 when viewed from the viewing space, or the same position as the first window side frame portion 101. (That is, the vertical distance from the public road LD and the outer wall OW2 is the same distance as the first window side frame portion 101). A part of the living room IN that can be viewed by a passerby (hereinafter, the portion of the living room will be referred to as a “visualization permission part VA”) is set by the line-of-sight control base point BP set in this way. The visual recognition allowance portion VA is an indoor portion (a portion that is not important for privacy in daily life) that does not need to block the line of sight from the outside such as the visual recognition space VE for privacy.

  As shown in FIG. 2, in this embodiment, assuming that the indoor laundry drying HL is not seen by passers-by, about 30 cm from the first window side frame portion 101 of the window surface 100 toward the room IN side. The line-of-sight control base point BP is set at the set back position. Alternatively, assuming that the vicinity of the corner on the outer wall OW1 side of the inner wall IW is visible to passers-by, privacy is not affected, and the inner wall IW is set at a position set back about 90 cm from the inner surface of the outer wall OW1. The line-of-sight control base point BP2 may be used. In addition, when the installation position of the furniture can be determined in advance, the gaze control base point BP3 set at the edge of the furniture FC is used on the assumption that the side of the furniture does not affect the privacy even if the side of the furniture is seen by a passerby. May be. In the present embodiment, the line-of-sight control base point BP is a position set back from the window surface 100 and is a position farther than the first window side frame portion 101 of the window surface 100 or the first window side frame portion 101. However, the line-of-sight control base point BP may be set at a position closer to the line-of-sight space VE than the first window-side frame portion 101 by setting in the design stage. That is, the line-of-sight control base point BP may be set anywhere as long as it is a position set back to the room IN side of the window surface 100 and serves as a base point for controlling the line of sight from the viewing space VE.

  The blindfold device 1 includes a line-of-sight control unit 10 and a line-of-sight non-control unit 20. The line-of-sight control unit 10 has a function of controlling the line of sight directed to the window surface 100 from the visual recognition space VE so that the front part FW of the window surface 100 and a part of the living room IN can be visually recognized from the visual recognition space VE. It functions as a viewing angle control unit that controls the line of sight by controlling the viewing angle of a passerby from the viewing space VE. The line-of-sight non-control unit 20 has a function of increasing the line-of-sight transmittance more than the line-of-sight control unit 10 so that the front part FW of the window surface 100 and a part of the living room IN can be viewed from the viewing space VE. It functions as a viewing angle non-control unit that does not particularly control the viewing angle of passers-by from VE. In the blindfold device 1, the line-of-sight non-control unit 20 is disposed at a position close to the window surface 100, and the line-of-sight control unit 10 is disposed at a position far from the window surface 100.

  The blindfold device 1 includes a line-of-sight control unit 10 and a line-of-sight non-control unit 20. The line-of-sight control unit 10 has a function of controlling the line of sight directed to the window surface 100 from the visual recognition space VE so that the front part FW of the window surface 100 and a part of the living room IN can be visually recognized from the visual recognition space VE. It functions as a viewing angle control unit that controls the line of sight by controlling the viewing angle of a passerby from the viewing space VE. The line-of-sight non-control unit 20 has a function of increasing the line-of-sight transmittance more than the line-of-sight control unit 10 so that the front part FW of the window surface 100 and a part of the living room IN can be viewed from the viewing space VE. It functions as a viewing angle non-control unit that does not particularly control the viewing angle of passers-by from VE. In the blindfold device 1, the line-of-sight non-control unit 20 is disposed at a position close to the window surface 100, and the line-of-sight control unit 10 is disposed at a position far from the window surface 100.

The line-of-sight control unit 10 is a first virtual line L1 that connects the inner edge portion 101a of the first window side frame portion 101 and the line-of-sight control base point BP of the line of sight VL that goes from the visual recognition space VE into the room IN. It has a function of allowing only the line of sight that intersects the portion between 101a and the line-of-sight control base point BP (see FIG. 2). That is, it has a function of limiting the line of sight VL that does not pass through the first virtual line L1. As a result, all lines of sight from the visual recognition space VE can be kept in the visual recognition allowable part VA. As shown in FIG. 3, specifically, the line-of-sight control unit 10 vertically aligns a plurality of long vertical lattice members 10 </ b> A having the same cross-sectional shape at a planar position perpendicular or substantially perpendicular to the window surface 100. Configured as a grid rail. Here, a total of N + 1 vertical lattice members 10A _{1 to} 10A _{N + 1} are arranged in order from the window surface 100 side.

Each of the vertical lattice members 10A _{1 to} 10A _{N + 1} is a rod-shaped member having a rectangular cross section, and is parallel to the window surface 100 and has a pair of side surface portions 11 and 12 that define the depth d of the vertical lattice members 10A _{1 to} 10A _{N + 1.} It has. The side parts 11 and 12 are side parts corresponding to the long sides in the rectangular cross section. In the present embodiment, the vertical lattice members 10A _{1 to} 10A _{N + 1} have a rectangular shape with a long side (= depth d) set to 20 to 90 mm and a short side set to 5 to 30 mm. Moreover, each side part 11 and 12 has the side edge parts 11a and 12a by the side of the window surface 100, and the side edge parts 11b and 12b by the side of visual recognition space. Side edge portions 12a and 12b of the side surface portion 12 of the vertical lattice member 10 _n (corresponding to “first vertical lattice member”) installed at a position close to the line-of-sight non-control unit 20, and adjacent to the vertical lattice member 10 _n And the side edge portions 11a and 11b of the side surface portion 11 of the vertical lattice member 10 _{n + 1} (corresponding to the “second vertical lattice member”) installed at a position far from the line-of-sight non-control unit 20 are opposed to each other ( n = 1 to N). The same relationship holds for all of the vertical lattice members 10A _{1 to} 10A _{N + 1} .

In the present embodiment, the control of the visual line VL made by the spacing _{S n} between longitudinal grid members 10A _n and longitudinal grid members _{10A n + 1} adjacent to each other. For example, if the vertical grid elements 10A ₁ and the field VF ₁ gaze VL of the gap between the longitudinal grid members 10A ₂ can reach the building ST side through illustrating, toward the window surface 100 in the field of view VF ₁ gaze viewing angle theta ₁ of the VL is the default by the angle of the boundary line of sight VL ₁ connecting the side edges 12a of the side of the longitudinal grid members 10A ₂ edge 11b and the longitudinal grid members 10A _1. Since the vertical lattice members 10A ₁ and 10A _{2 have} the same depth (= d) and the side edges 11 and 12 are also opposed to each other, the viewing angle θ ₁ is determined by the interval S ₁ from the following equation (1). It is done. The same relationship holds true for the visual field VF _n of the line of sight VL that can pass through the gap between the vertical lattice members 10A _n and 10A _{n + 1} adjacent to each other, and the viewing angle θ of the line of sight VL toward the window surface 100 side. _n is determined by the interval S _n .

tan θ ₁ = S ₁ / d (1)

A second virtual line L2 is set by connecting the line-of-sight control base point BP and the outer edge portion 102a of the second window side frame portion 102 (see FIG. 2). Of eye control unit 10, the vertical grid elements 10A ₁ and the longitudinal grid members 10A ₂ for controlling the visual line VL in most window surface 100 side has a viewing angle theta ₁ as described above, the viewing angle theta ₁ The boundary line of sight VL ₁ is parallel to the second virtual line L2 (here, the boundary line of sight VL ₁ and the second virtual line L2 coincide). Accordingly, the vertical grid elements 10A ₁ and the longitudinal grid members 10A ₂ are eye control base point BP and the line of sight range VL (field VF ₁ which intersects the inner edge portion 101a first virtual line L1 of the first window side frame portion 101 gaze VL) allows only by blocking the line of sight VL which does not pass through the first virtual line L1 in the longitudinal grid members 10A ₁ or longitudinal grid members 10A _2, can be limited. Incidentally, (to narrow the viewing angle theta ₁ window surface 100 side of the visual field VF ₁₎ an angle of visual field VF ₁ second may be smaller than the angle which the virtual line L2 is formed by, the front FW prospects In order to improve the viewing angle, it is preferable to ensure a large viewing angle θ ₁ .

The interval S _n between longitudinal grid members 10A _n and longitudinal grid members 10A n + ₁ adjacent to each other, (according to the value of that is, n becomes larger) as the distance from the window surface 100, is set to be gradually increased . As a result, a gradation is formed in which the gap gradually increases as the distance from the window surface 100 increases. Specifically, the spacing _{S n} between longitudinal grid members 10A _n and longitudinal grid members _{10A n + 1} adjacent to each other, the viewing of the window surface 100 side of the longitudinal grid members 10A _n side edges 12a and longitudinal grid members _{10A n + 1} (in this case, the boundary line of sight VL ₁ is applicable to the state) state boundary line of sight VL _n connecting the side edges 11b of the space VE side is parallel to the second imaginary line L2 from the window surface 100 It is set to increase in steps as you move away. If the boundary line of sight VL _n on the window surface 100 side passes through the line-of-sight control base point BP, all lines of sight VL passing through the gap between the vertical grid member 10A _n and the vertical grid member 10A _{n + 1} are the first virtual line L1. Therefore, the viewing angle θ _n in this state is the maximum viewing angle. The interval S _n may be set in any way as long as the viewing angle θ _n does not exceed the maximum viewing angle, but it is preferable to secure a large viewing angle θ _n in order to improve the visibility of the front FW. .

In the positional relationship in a plan view of such three-dimensional space VE and Madomen 100 of this embodiment, the spacing _{S n} between longitudinal grid members 10A _n and longitudinal grid members _{10A n + 1} adjacent to each other, for example, 30Mm～90mm And the line-of-sight transmittance of the line-of-sight control unit 10 constituted by the continuous vertical lattice member 10A _n and the vertical lattice member 10A _{n + 1} is set to 50 to 75%. Within this range, a gradational vertical grid is formed in which the gap gradually increases as the distance from the window surface 100 (or the line-of-sight non-control unit 20) increases.

  The end of the line-of-sight control unit 10 extending away from the line-of-sight non-control unit 20 (that is, the end far from the window surface 100) may be further extended, but the first virtual line L1 is directed outward. It is preferable to limit the position intersecting with the extended straight line. Even if the line-of-sight control unit 10 is provided beyond the straight line, the line of sight from the region cannot intersect the first virtual line L1, and the line of sight is controlled to be directed toward the front part FW of the window surface 100. This is because they all reach the back of the living room IN. In the embodiment shown in FIG. 1, since the first virtual line L1 and the blindfold device 1 are parallel, such a region does not occur.

  The line-of-sight non-control unit 20 does not perform line-of-sight control like the line-of-sight control unit 10 (no design for controlling the viewing angle), and increases the line-of-sight transmittance more than the line-of-sight control unit 10. The prospect from the public road LD to the front FW of 100 in front of the window is secured. In the region closer to the window surface 100 than the second imaginary line L2, all the lines of sight are blocked by the second window side frame portion 102 of the window surface 100 without particularly controlling the viewing angle. Privacy passes through the virtual line L1. Therefore, the line-of-sight non-control unit 20 is disposed at least on the window surface 100 side relative to the second virtual line L2, and the line-of-sight control unit 10 is disposed on the opposite side of the window surface 100 with respect to the line-of-sight non-control unit 20. Is done. In the present embodiment, the second virtual line L <b> 2 constitutes a boundary portion between the line-of-sight non-control unit 20 and the line-of-sight control unit 10. Although the line-of-sight control unit 10 may extend to the window surface 100 side from the second virtual line L2, it is preferable to ensure a large range of the line-of-sight non-control unit 20 from the viewpoint of cost of members and workability. .

  The line-of-sight non-control unit 20 is configured as a vertical lattice fence by arranging a plurality of long vertical lattice members 20 </ b> A having the same cross-sectional shape in a plane position perpendicular or substantially perpendicular to the window surface 100. The vertical lattice member 20A is smaller in depth than the vertical lattice member 10A of the line-of-sight control unit 10, and the interval between the members is wide, so that the vertical lattice member 20A is disposed uniformly. Thereby, the gaze transmittance of the vertical lattice structure of the line-of-sight non-control unit 20 is set higher than that of the vertical lattice structure of the line-of-sight control unit 10. The line-of-sight non-control unit 20 is not limited to a vertical lattice structure as long as it can prevent physical entry from the public road LD, and any structure can be adopted. From the viewpoint of the design, a vertical lattice structure is preferable. The line-of-sight transmittance of the line-of-sight non-control unit 20 is preferably set to 50 to 100%.

  It is preferable that either or both of the line-of-sight control unit 10 and the line-of-sight non-control unit 20 are configured to be openable and closable. For example, the lattices constituting the line-of-sight control unit 10 (line-of-sight non-control unit 20) may be integrated to be openable and closable in a door shape (or sliding door shape). Or it is good also as opening and closing freely by covering the gap of a vertical lattice structure with another member. By making it openable and closable, it is possible to close in a scene where the line of sight from the viewing space should be completely blocked, while securing the crime prevention by keeping it open at normal times.

Next, an example of a design method for the line-of-sight control unit 10 and the line-of-sight non-control unit 20 of the blindfold device 1 will be described with reference to FIG. Since FIG. 4 is modeled to explain the design method, the dimensional relationship between the elements and the relationship of the line-of-sight angle are different from those of the actual blindfold device 1. For the sake of explanation, in FIG. 4, unlike the example of FIG. 1, the line-of-sight control base point BP is set at a position farther from the public road LD than the first window side frame portion 101. In FIG. 4, among the dimensions in the direction perpendicular to the window surface 100, X1 indicates the distance between the line-of-sight control base point BP and the outer edge portion 102a of the second window side frame portion 102, and X2 indicates the second window side frame portion. represents the distance between the 102 outer edge 102a and the reference position (can be arbitrarily set in the boundary portion between the line of sight uncontrolled unit 20 and the eye control unit 10), g _n vertical grid member from the reference position 10A _n This is the distance to the side surface portion 12. Of the dimensions in the direction parallel to the window surface 100, Y1 indicates the distance between the line-of-sight control base point BP and the first window side frame portion 101, Y2 indicates the size of the window surface 100, and Y3 indicates the second size. distance from the window side frame portion 102 to hider 1 (here, the distance to the end face of the window surface 100 side of the longitudinal grid members 10A _n of sight line control unit 10) is. In the calculation example of the present embodiment, the side portions 12 of the vertical grid elements 10A _1, is set to the reference position of the boundary portion between the line of sight uncontrolled unit 20 and the eye control unit 10. In this case, g ₁ = 0. Further, the size of the line-of-sight non-control unit 20 (the distance between the outer edge portion 102a of the second window side frame 102 and the end of the line-of-sight control unit 10 on the line of sight non-control unit 20 side) is a vertical lattice from X2. it can be determined by subtracting the thickness of the member 10A ₁ (the size in the window plane 100 perpendicular direction). However, the reference position may be set anywhere as long as it is in the vicinity of the boundary between the line-of-sight non-control unit 20 and the line-of-sight control unit 10, and the formula described below may be changed as appropriate according to the set position. .

First, X1 and Y1 are determined by setting a line-of-sight control base point BP in the living room IN. Next, a second imaginary line L2 connecting the line-of-sight control base point BP and the outer edge portion 102a of the second window side frame portion 102 is set. Here, equation (2) is derived from the relationship of similar shapes based on a right triangle having an angle θ _1, and the equation (2) is transformed into equation (3), whereby the size of the line-of-sight non-control unit 20 is increased. That is, X2 is calculated.

X1 / (Y1 + Y2) = X2 / Y3 (2)
X2 = X1 · Y3 / (Y1 + Y2) (3)

Next, an interval S ₁ between the vertical lattice member 10A ₁ and the vertical lattice member 10A ₂ is derived. Here, as the boundary line of sight VL ₁ which forms a viewing angle theta ₁ is parallel to the second virtual line L2 is (to match). Equation (4) is derived from similar shapes of relationships based on right triangle, by the equation (5) by modifying the expression (4), the spacing S ₁ is calculated.

(X1 + X2) / (Y1 + Y2 + Y3) = S ₁ / d (4)
S ₁ = (X1 + X2) · d / (Y1 + Y2 + Y3) (5)

Then, spacing _{S 2} between the longitudinal grid members 10A ₂ and the longitudinal grid members 10A _3, the longitudinal grid members 10A ₃ and the longitudinal grid members 10A spacing _{S 3} between ₄ and slide into successively calculated. Here, when calculating the interval S _n between the vertical lattice member 10A _n and the vertical lattice member 10A _{n + 1} , the boundary line of sight VL _n forming the viewing angle θ _n is calculated so as to pass through the line-of-sight control base point BP. Equation (6) is derived from the relationship of similar shapes based on the right triangle, and the interval _Sn is calculated by transforming Equation (6) into Equation (7). A gradational vertical grid in the line-of-sight control unit 10 is constructed by calculating from n = 2 to N using Expression (7).

(X1 + X2 + g _n ) / (Y1 + Y2 + Y3) = S _n / d (6)
S _n = (X1 + X2 + g _n ) · d / (Y1 + Y2 + Y3) (7)

  Next, the operation and effect of the blindfold device 1 according to the present embodiment will be described.

  First, for comparison with the blindfold device 1, the blindfold devices 50 and 60 according to the comparative example will be described with reference to FIGS. FIG. 5 shows the configuration of a blindfold device 50 according to a comparative example, and FIG. 6 shows the configuration of a blindfold device 60 according to a comparative example. As shown in FIG. 5, the blindfold device 50 has a wide viewing space VE. The vertical lattice members constituting the blindfold device 50 are not controlled in the viewing angle like the line-of-sight control unit 10 and have a high line-of-sight transmittance like the line-of-sight control unit 20. In such a blindfold device 50, many lines of sight entering the room IN enter deeper than the line-of-sight control base point BP. As shown in FIG. 6, in the blindfold device 60, the visual recognition space VE is set in a certain range (L = 2m or so) as in the blindfold device 1. The vertical lattice members constituting the blindfold device 60 are not controlled in the viewing angle unlike the line-of-sight control unit 10 and have a high line-of-sight transmittance like the line-of-sight control unit 20. In such a blindfold device 60, although it is reduced as compared with the blindfold device 50, a part of the line of sight toward the living room IN enters further into the interior than the line-of-sight control base point BP. As described above, in the configuration according to the comparative example, although the line of sight with respect to the front of the window surface 100 can be sufficiently secured, the line of sight enters the portion where privacy should be secured in the living room IN.

  On the other hand, in the blindfold device 1 according to the present embodiment, the line of sight VL directed from the viewing space VE to the window surface 100 is controlled, and the front part FW of the window surface 100 and a part of the living room IN can be viewed from the viewing space VE. A line-of-sight control unit 10 is provided. Further, the line-of-sight control unit 10 intersects a first virtual line L1 that connects the inner edge portion 101a of the first window side frame portion 101 and the line-of-sight control base point BP in the line of sight VL that goes from the visual recognition space VE into the room IN. Only the line of sight VL is allowed. With such a configuration, a passerby who passes through the visual recognition space VE can visually recognize the front part FW of the window surface 100 via the line-of-sight control unit 10 and is set near the window surface in the living room IN. Only the permissible visual recognition portion VA within the range where the first virtual line L1 and the line of sight intersect can be visually recognized. That is, it is possible to restrict the line of sight VL that goes to the back of the living room IN without intersecting the first virtual line L1. By setting the line-of-sight control base point BP in consideration of the privacy in the living room IN at the time of design, the line-of-sight control unit 10 allows the line of sight VL from the visual space VE to be a part that does not place importance on privacy in the living room IN. Only part VA can be used. The resident in the living room IN can obtain the line of sight VL from the visual recognition space VE over the entire window surface 100, and further limit the line of sight VL from the visual recognition space VE to the visual permissible portion VA that does not place importance on privacy. It has become something that can be. As described above, it is possible to achieve both ensuring the privacy in the living room IN and ensuring the prospect of the outdoor front FW.

  In addition, a line-of-sight non-control unit 20 is provided that increases the line-of-sight transmission more than the line-of-sight control unit 10 so that the front part FW of the window surface 100 and a part of the living room IN can be viewed from the visual recognition space VE. The line-of-sight non-control unit 20 is disposed closer to the window surface 100 than the second virtual line L2 connecting the outer edge portion 102a of the second window-side frame 102 and the line-of-sight control base point BP, and the line-of-sight control unit 10 It arrange | positions with respect to the control part 20 on the opposite side of the window surface 100. FIG. That is, the line-of-sight non-control unit 20 is provided at a position near the window surface 100, and the line-of-sight control unit 10 is provided at a position far from the window surface 100. At a position relatively far from the window surface 100, the angle between the line of sight VL toward the window surface 100 and the window surface 100 becomes large, and accordingly, the line of sight VL from the viewing space VE toward the back of the living room IN is passed. Easy positional relationship. By setting the area as the line-of-sight control unit 10, the line of sight from the line-of-sight control base point BP to the back is controlled, so that a resident in the living room IN can view the visual space even at a position far from the window surface 100. The line of sight from the VE can be obtained at the front part FW of the window surface 100, and further, the line of sight VL from the visual space VE can be limited to the visual recognition allowance VA in the living room IN that does not place importance on privacy. . On the other hand, a line of sight from a position near the window surface 100, specifically, a region closer to the window surface 100 than the second virtual line L2 connecting the line-of-sight control base point BP and the outer edge portion 102a of the second window side frame portion 102. The VL does not pass the line of sight beyond the line-of-sight control base point BP even if the line-of-sight control is not performed (i.e., all the lines of sight that may cause privacy problems are blocked by the second window side frame portion 102). Only the line of sight VL that intersects one virtual line L1 can enter the living room IN), and as a result, it remains in the visual recognition portion VA that does not place importance on privacy in the living room IN. Thus, by making the area where the privacy can be secured without performing the line-of-sight control as the line-of-sight non-control unit 20 with a high line-of-sight transmission, it becomes possible to improve the visibility of the front FW and improve the crime prevention performance. Can be made. Further, since it is not necessary to control the line of sight VL, it is possible to reduce costs and burdens during design and work.

The line-of-sight control unit 10 is configured by arranging a plurality of long vertical lattice members 10A _{1 to} 10A _{N + 1} having the same cross-sectional shape in a plane position perpendicular or substantially perpendicular to the window surface. As a result, the line-of-sight control unit 10 can be formed very easily.

The distance between the vertical grid members 10A _n and the vertical grid member _{10A n + 1,} the vertical lattice members 10A _n side edges of the window surface 100 side 12a and the longitudinal grid members _{10A n + 1} of the viewing space VE side of the side edges from a state in which the boundary line of sight VL _n connecting the 11b is parallel to the second imaginary line L2, it is set to be gradually increased as the distance from the window surface 100. Here, if the boundary line of sight VL _n according to the boundary of the viewing angle theta _n is a parallel to the second imaginary line L2, field VF _n, each longitudinal grid members 10A _n to be controlled by the spacing S _n , 10A _{n + 1} regardless of the distance from the window surface 100, it is always kept within the range intersecting with the first virtual line L1 (see the blindfolding device 70 according to a modification described later with reference to FIG. 6). On the other hand, among the vertical lattice members 10A _{1 to} 10A _{N + 1} constituting the line-of-sight control unit 10, regarding the vertical lattice members 10A _n and 10A _{n + 1} arranged at positions far from the window surface 100, the distance from the line-of-sight control base point BP is also the same. to become distant, it is set as the viewing angle theta _n is widened, it is possible to keep the line of sight to a range intersecting the first imaginary line L1. At the same time, by setting the viewing angle θ _n wider, it is possible to improve the visibility of the front FW and improve the crime prevention performance. Thus, from a state in which the boundary line of sight VL _n is parallel to the second imaginary line L2, by setting the distance S _n such that stepwise increase as the distance from the window surface 100, to ensure the privacy of the room IN While protecting, crime prevention performance can be improved. Further, by thus placing the vertical grid elements 10A ₁ 10 A N + _1, the interval S _n of the sight line control unit 10 becomes the larger take the away from the line of sight uncontrolled unit 20, the appearance of the blind apparatus 1 Improvement will also be achieved.

In blind apparatus 1, the interval _{S n} between longitudinal grid members _10A n, _{10A n + 1} adjacent to each other, as the distance from the window surface 100, is set to be gradually increased. In a region close to the window surface 100, if the viewing angle θ _n is too large, the line of sight VL reaches the interior of the living room IN. While it is necessary to control the viewing angle θ _n so that the line of sight remains, it is possible to sufficiently secure the line of sight VL with respect to the front part FW even if the viewing angle θ _n is small. In a region far from the window surface 100, if the viewing angle θ _n is too small, the line of sight reaching the front FW is reduced, while the distance from the window surface 100 is far, so even if the viewing angle θ _n is increased, the room is The line of sight VL into IN can be kept at a part near the window surface. Thus, in the blind apparatus 1, in a region close to the window plane 100, longitudinal grid members _10A n, configured to viewing angle theta _n is reduced by reducing the interval _{S n} between _{10A n + 1,} from the window surface 100 the far region, longitudinal grid members _10A n, are configured such viewing angle theta _n increases by increasing the spacing _{S n} between _{10A n + 1.} Thereby, ensuring of privacy in the living room and securing of the prospect of the front part of the outdoor window can be achieved at the same time.

The present invention is not limited to the embodiment described above. For example, in the above-described embodiment, the line-of-sight control unit 10 configures a gradational vertical lattice structure, but a vertical lattice structure with a constant interval may be used. For example, like the blindfold device 70 shown in FIG. 7, the vertical lattice members constituting the line-of-sight control unit 30 may be arranged at the same pitch. In hider 70, the boundary line of sight VL ₁ (here, coincident) parallel to the second virtual line L2 and is set to be, by the longitudinal grid members are arranged at the same pitch, the boundary line of sight VL all ₂ ～VL _N is set to be parallel to the second virtual line L2.

Here, if the boundary lines of sight VL _{1 to} VL _N related to the boundary portion of the viewing angle θ _n are in a state parallel to the second virtual line L 2, as shown in FIG. Regardless of the distance from the window surface of each vertical lattice member, the controlled visual field is always kept within the range intersecting with the first virtual line L1. In addition, among the parts that allow visual recognition from outside in the living room IN, it is possible to suppress the line of sight to the living room IN only at a position closer to the window surface (that is, the part that wants to protect privacy and the part that can be visually recognized). It is possible to prevent the line of sight from being concentrated in the vicinity of the line-of-sight control base point BP, which is the boundary of the visual recognition allowable portion VA). Therefore, the privacy in the living room IN can be more reliably protected by setting the interval between the vertical lattice members so that the boundary line of sight VL _{1 to} VL _N is parallel to the second virtual line. . In such a configuration, although the visual dose from the public road to the front of the window surface is slightly reduced as compared with the present embodiment, the privacy of the living room is improved accordingly.

  Moreover, although the thing as shown in FIG. 1 was mentioned as an example as an example of a building or an external structure, the blindfolding apparatus which concerns on this invention is applicable to the thing of all structures. In the example shown in FIG. 8, blindfolding devices 80 and 90 are applied to the window surface 200 facing the public road LD. Further, the blindfold device 1 having the same configuration as that of the above-described embodiment is applied to the window surface 300 perpendicular to the public road LD. A viewing space VE (L = 2 m or so) is set with respect to the window surface 200 along a direction D1 that is a traveling direction of a passerby on the public road LD, and the window surface is between the viewing space VE and the window surface 200. A blindfold device 80 extending perpendicularly to 200 is provided. The blindfold device 80 is disposed at a position very close to the window surface 200. In such an arrangement, since the area that can be used as the line-of-sight non-control unit is small (or disappears), all of the blindfold device 80 may be configured as the line-of-sight control unit. In addition, regarding the blindfold device 90, a portion corresponding to the line-of-sight non-control unit is a passage in the site, and nothing is provided.

In the above-described embodiment, the gradation is configured by increasing the interval between the vertical lattice members one by one. However, the gradation configuration method is not particularly limited. That is, the term “increases in steps” in the claims includes not only the increase in the interval of each vertical lattice member as in the embodiment, but also a set of a plurality of vertical lattice members. Of course, the interval between the groups is gradually increased. For example, the gradation may be configured with a predetermined number of vertical lattice members having the same pitch. Specifically, the same pitch to distance S ₁ to S _5, the same pitch from the interval S ₆ until the interval S ₆ to S ₁₀ as to be larger than the pitch may repeat this pattern. As a result, it is possible to reduce the design burden and the work burden during installation.

Further, in the above-described embodiment, all the vertical lattice members constituting the line-of-sight control unit have the same cross section in order to reduce manufacturing costs and burdens, and in order to reduce the design burden and the work burden at the time of installation, (adjustment of viewing angle) only by eye control to adjust the S _n have a configuration capable. However, the method of line-of-sight control is not particularly limited, and any method such as a line-of-sight control method using a member having a different cross-sectional size as a vertical grid member, or a line-of-sight control method by shifting the mounting angle of the vertical grid is adopted. May be.

Further, in the blindfolding apparatus 1 according to the present invention, the width of each vertical lattice member is set to a constant value A, and the first vertical lattice member v ₁ and the second vertical lattice member v _{2 are} arranged from a position close to the window surface 100. .., N + 1 vertical lattice member vN _{+ 1,} and when the interval between the vertical lattice members is set as a first interval S ₁ , a second interval S ₂ , and an nth interval S _{n in} order from a position close to the window surface, It may be set with the relationship of the following formulas (A), (B), and (C). In addition, when the width of each vertical lattice member is expressed as A ₁ , A ₂ ..., A _n , A _{n + 1} from a position close to the window surface 100 as shown in FIG. Therefore, A _{1 to} A _{n + 1} = A. By erecting the vertical grid members based on the above formula, it is possible to easily manage the distance between the vertical grid members while ensuring the control of the line of sight, and manufacturing the blindfold device 1. Can be easily performed.

ただし、Δｓは定数とし、また、ｎ＝１〜Ｎ

However, Δs is a constant, and n = 1 to N

In the formula (A), the interval S _{n + 1} between the adjacent vertical lattice members V _{n + 2} and V _{n + 1} is more constant than the interval S _n between the vertical lattice members V _{n + 1} and the vertical lattice members V _n . It shows that it increases by the increase amount Δs. That is, the interval S _n of the longitudinal grid members adjacent shows that as the distance from the window surface 100, becomes larger by Delta] s. Note that the increase amount Δs is a constant value, and an integer value such as Nmm is preferable from the viewpoint of easy manufacture.

Moreover, Formula (B) has shown that the ratio of the expansion of the space | interval between vertical lattice members will be 10% or less. That is, in the embodiment satisfying the formulas (A) to (C), the ratio of the expansion of the interval between adjacent vertical lattice members is 10% or less, and the ratio decreases as the distance from the window surface 100 increases. comprising _{(since S n} becomes larger as it gets farther away from the window surface 100, the proportion Delta] s / _{S n} spread is day become smaller). Thus, by setting the ratio of the expansion of the interval between the vertical lattice members to 10% or less, the function as an external structure separating the public road and the site is maintained in the vertical lattice member, and with respect to the window surface. The line-of-sight control of blocking the line of sight toward the back of the living room side with respect to the window surface 100 while ensuring the line of sight of the person walking on the public road with respect to the window surface 100 is favorably realized.

Formula (C) indicates that the distance between the vertical lattice members increases as the line-of-sight control unit 10 moves away from the window surface 100 in the range of the line-of-sight transmittance of 25% to 75%. The line-of-sight transmittance of n = 1 is larger than 25%, and the line-of-sight transmittance of n = N is smaller than 75%. The gradation range is preferably 50 to 70%, and more preferably changes stepwise from 50% to 60%. As the distance from the window surface 100 increases, the distance between the vertical lattice members increases, so that the line-of-sight transmittance from the public road to the site gradually increases. As a result, it is possible to secure a line of sight from the public road with respect to a position away from the window surface 100, and it is also possible to improve the nature monitoring performance for the entire site.

  It is preferable that the line-of-sight control unit 10 of the blindfold device 1 increases the spread between the vertical lattice members as the window surface 100 is closer. For example, as shown in FIGS. 9 to 12, the distance between the reference position ST near the window surface 100 and the blindfolding device 1 is Y3. When 0 mm <Y3 <1000 mm, Δs = 2 mm and when 1000 mm <Y3, Δs = 1 mm can be set. Note that the above boundary conditions are not strict. For example, when 1000 mm≈Y3, the same effect can be obtained regardless of whether Δs = 2 mm or Δs = 1 mm.

FIGS. 9-11 has shown the blindfold apparatus 1 which concerns on the graduation screen for side windows in which the window surface 100 is orthogonal to the advancing direction D1 of a passerby. In the example shown in FIG. 9, the blindfold device 1 is disposed at the same position (Y3 = 90 mm) as the reference position ST near the window surface 100. The blindfold device 1 of FIG. 9 has the line-of-sight control unit 10 on the window surface 100 side, and has the line-of-sight non-control unit 20 at a position farther from the window surface 100 than the line-of-sight control unit 10. The line-of-sight non-control unit 20 has a width of one vertical grid member of 30 mm and a depth d of 85 mm, and has a width of 800 mm as a whole. is there. The line-of-sight control unit 10 has a vertical grid member having a width of 30 mm and a depth d of 85 mm, and has a width of 1200 as a whole. The distance between the members increases from the 60 mm pitch by 2 mm and increases to the 90 mm pitch. More specifically, A = 30 mm, Δs = 2 mm, S ₁ = 60 mm, S _N = 90 mm, and line-of-sight transmittance = 50 to 67%. This satisfies the above-mentioned formulas (A), (B), and (C).

In the example shown in FIG. 10, the blindfold device 1 is arranged at a position of Y3 = 1000 mm. The blindfold device 1 in FIG. 10 has a line-of-sight non-control unit 20A on the window surface 100 side, and has the line-of-sight control unit 10 at a position farther from the window surface 100 than the line-of-sight non-control unit 20A. Further, the line-of-sight non-control unit 20B is provided at a position further away from the window surface 100 than the line-of-sight control unit 10 is. The line-of-sight non-control unit 20A has a width of one vertical grid member of 30 mm and a depth d of 85 mm, and has a width of 240 mm as a whole. is there. The line-of-sight non-control unit 20B has a width of one vertical grid member of 30 mm and a depth d of 85 mm, and has a width of 630 mm as a whole. is there. The line-of-sight control unit 10 has a width of one vertical lattice member of 30 mm and a depth d of 85 mm, and has a width of 1080 mm as a whole. The interval between the members increases from the 60 mm pitch by 1 mm and increases to the 75 mm pitch. More specifically, A = 30 mm, Δs = 1 mm, S ₁ = 60 mm, S _N = 75 mm, and line-of-sight transmittance = 50 to 60%. This satisfies the above-mentioned formulas (A), (B), and (C).

In the example shown in FIG. 11, the blindfold device 1 is arranged at a position of Y3 = 2000 mm. The blindfold device 1 in FIG. 11 has the line-of-sight non-control unit 20A on the window surface 100 side, and has the line-of-sight control unit 10 at a position farther from the window surface 100 than the line-of-sight non-control unit 20A. Further, the line-of-sight non-control unit 20B is provided at a position further away from the window surface 100 than the line-of-sight control unit 10 is. The line-of-sight non-control unit 20A has a width of one vertical lattice member of 30 mm and a depth d of 85 mm, and has a width of 120 mm as a whole. is there. The line-of-sight non-control unit 20B has a width of one vertical lattice member of 30 mm and a depth d of 85 mm, and has a width of 270 mm as a whole. is there. The line-of-sight control unit 10 has a width of one vertical lattice member of 30 mm and a depth d of 85 mm, and has a width of 1080 mm as a whole. The interval between the members increases from the 60 mm pitch by 1 mm and increases to the 75 mm pitch. More specifically, A = 30 mm, Δs = 1 mm, S ₁ = 60 mm, S _N = 75 mm, and line-of-sight transmittance = 50 to 60%. This satisfies the above-mentioned formulas (A), (B), and (C).

Moreover, FIG. 12 has shown the blindfold apparatus 1 which concerns on the graduation screen for front windows in which the window surface 100 becomes parallel to the advancing direction D1 of a passerby. In the example illustrated in FIG. 12, the blindfold device 1 extends vertically from the vicinity of the edge of the window surface 100 toward the outside. The blindfold device 1 in FIG. 12 is configured only by the line-of-sight control unit 10. The line-of-sight control unit 10 has a width of one vertical grid member of 30 mm and a depth d of 85 mm, and the entire line has a width of 720 mm. The interval between the members increases from the 60 mm pitch by 2 mm and increases to the 78 mm pitch. More specifically, A = 30 mm, Δs = 2 mm, S ₁ = 60 mm, S _N = 78 mm, and line-of-sight transmittance = 50 to 61%. This satisfies the above-mentioned formulas (A), (B), and (C).

  Note that the above dimensional relationship is merely an example, and may be changed as appropriate. For example, the line-of-sight control unit 10 of the blindfolder 1 sets the distance from the window surface 100 and the interval of Δs within a range that the condition allows, such as Δs = 2 mm when 0 mm <Y3 ≦ 1000 mm and Δs = 1 mm when 1000 mm <Y3. Can be changed as appropriate.

1 ... hider, 10 ... eye control _unit, 10A 1 10 A _{N + 1 ...} longitudinal grid members, 11 ... side surface portion, 11a, 11b ... side edge, 12 ... side surface portion, 12a, 12b ... side edge, 20 ... line of sight Non-control part, 100 ... window surface, 101 ... first window side frame part, 101a ... outer edge part, 102 ... second window side frame part, 102a ... inner edge part, L1 ... first imaginary line, L2 ... second Virtual line, BP ... Gaze control base point, VE ... Viewing space.

Claims (7)

The window surface of the window provided in the room of a building provided with a pair of window side frame portions, provided we are extending perpendicular or substantially perpendicular to the window plane between visible viewing space the window surface,
In the living room, a line-of-sight control base point serving as a base point for controlling the line of sight toward the living room from the viewing space is set at a position separated from the window surface toward the room side. A blindfold device installed in relation to the base point,
A line-of-sight control unit is provided that controls the line of sight directed from the viewing space to the window surface, and allows the front portion of the window surface and a part of the living room to be visually recognized from the viewing space.
The line-of-sight control unit includes an inner edge portion of a first window-side frame portion that is located far from the viewing space of the pair of window-side frame portions, and the line-of-sight control base point of the line-of-sight toward the living room from the viewing space. Only the line of sight that intersects the first imaginary line that is a line segment connecting
A line-of-sight non-control unit is provided that increases the line-of-sight transmission more than the line-of-sight control unit and allows the front part of the window surface and a part of the living room to be visually recognized from the viewing space.
The line-of-sight non-control unit is more than a second imaginary line that is a straight line that passes through an outer edge portion of the second window-side frame portion located near the viewing space in the pair of window-side frame portions and the line-of-sight control base point. It is placed at a position close to the window side,
The line-of-sight control unit is arranged at a position farther than the line-of-sight non-control unit when viewed from the window surface and is continuous with the line-of-sight non-control unit,
In the room,
The line-of-sight control base point is set so that the indoor laundry clothesline or furniture is not visually recognized from the viewing space when the indoor laundry clothesline or furniture is arranged closer to the second window side frame than the second virtual line. A blindfolding device characterized by that. The eye control unit, according to claim 1, characterized in that it is constituted by arranging a plurality of vertical lattice members elongated having the same cross-sectional shape in the vertical or substantially vertical plane located in the window surface Blindfold device. Each of the vertical lattice members includes a pair of side surfaces that are parallel to the window surface and define the depth of the vertical lattice member,
A side edge of the side surface portion of the first vertical grid member installed at a position close to the line-of-sight non-control unit, and a side edge of the first vertical grid member adjacent to the first vertical grid member and a position far from the line-of-sight non-control unit. Side edge portions of the side surface portions of the second vertical lattice members facing each other,
The distance between the first vertical grid member and the second vertical grid member is determined by the side edge of the first vertical grid member on the window surface side and the visual recognition of the second vertical grid member. The blindfold device according to claim 2 , wherein a straight line connecting the side edge on the space side is set in a state parallel to the second imaginary line. Each of the vertical lattice members includes a pair of side surfaces that are parallel to the window surface and define the depth of the vertical lattice member,
A side edge of the side surface portion of the first vertical grid member installed at a position close to the line-of-sight non-control unit, and a side edge of the first vertical grid member adjacent to the first vertical grid member and a position far from the line-of-sight non-control unit. Side edge portions of the side surface portions of the second vertical lattice members facing each other,
The distance between the first vertical grid member and the second vertical grid member is determined by the side edge of the first vertical grid member on the window surface side and the visual recognition of the second vertical grid member. from a state where the straight line connecting the said side edge portion of the space side become parallel to the second imaginary line, characterized in that it is set to be larger gradually away from the window surface according to claim 2 The blindfold device described in. The width of each vertical lattice member is A having a constant width, and the vertical lattice member is defined as a first vertical lattice member v ₁ , a second vertical lattice member v ₂ ..., An N + 1 vertical lattice member v _{N + 1} from a position close to the window surface. When the intervals between the vertical lattice members are set as the first interval S ₁ , the second interval S ₂ ..., And the nth interval S _{n in} order from the position close to the window surface, the following formula (A), The blindfolding device according to claim 4 , wherein the blindfolding device is set to have a relationship of (B) and formula (C).

However, Δs is a constant, and n = 1 to N
The blindfolding device according to any one of claims 1 to 5 , wherein one or both of the line-of-sight control unit and the line-of-sight non-control unit are openable and closable. A plurality of long vertical lattice members having the same cross-sectional shape are perpendicular to the window surface between a window surface provided in the living room having a pair of window side frame portions and a viewing space in which the window surface can be visually recognized. Or arranged in a substantially vertical plane position,
The blindfolding device is characterized in that an interval between the vertical lattice members adjacent to each other is set to increase stepwise as the distance from the window surface increases.

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