JPH0719586U - Privacy windows - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] It is possible to completely block the line of sight from the outdoor direction, but the light from other directions is substantially equivalent to transparent glass. Provide a window for privacy protection that can take in the light of the room. [Structure] The window surface is composed of a plurality of lenses 2,
In each of the lenses, a blinding light shield 3 is provided in the vicinity of the focal point where the light in the gaze direction from the outside is focused on the light exit side of the lens.
Is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a privacy protection window, and more specifically, it can completely block the line of sight from the most disturbing direction outside the window, but can protect against light from other directions. Relates to a privacy protection window having a transmittance substantially equal to that of transparent glass.

[0002]

[Prior art]

 One of the major purposes of building and house windows is to let in outside light while blocking outside air. However, sometimes windows are restricted to protect privacy. Especially in cities with densely populated houses, the neighboring house and the house are often close to each other.In such a case, if the windows face each other, you can completely see the inside of the neighboring house, and I sometimes feel uncomfortable. Therefore, in such cases, from the perspective of protecting the privacy of each other's house, various measures have been taken such as limiting the size of windows, attaching a grid of dust, or using frosted glass.

[0003]

[Problems to be solved by the device]

 However, none of the conventional methods can be said to be perfect, and it was unavoidable that the lighting was limited or that the interior of the room was seen as a watermark.

Therefore, the object of the present invention is to completely shut off the line of sight from a certain direction from the outside, but on the day from other directions, the light that is substantially equivalent to that of transparent glass enters the room. It is to provide privacy protection windows that can be incorporated.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the privacy protection window of the present invention has a window surface composed of a plurality of lenses, and in each of the lenses, the light in the direction of the line of sight from the outside is emitted from the lens. A blind shade is provided in the vicinity of the focal point that connects the focal points on the side.

In the plurality of lenses, for example, the entire window glass is partitioned into a grid pattern, and each partition has a lens-like wall thickness, or a cylindrical surface is arranged in parallel at a constant pitch. It can be obtained by using a so-called lenticular lens having a shape as described above. It is preferable that the light exit surface side of the window glass is flat in view of provision of a blinding light shield. In addition, the part where the line of sight from the outside is not a concern, for example, the upper part of the window glass can be left as normal transparent glass.

In the present invention, the material of the window surface need not be glass as long as it is transparent, and may be resin such as acrylic resin.

In the present invention, the focal point on the light output side of each lens can arbitrarily move two-dimensionally depending on the position of the line of sight to be blocked. For example, if the line of sight is from almost the same height as the window, the light in the line of sight is focused near the center of each light exit surface of each lens, and if the line of sight is far below the window, for example, When trying to block the line of sight from the ground through the window on the second floor, the focus of light in the line of sight shifts slightly above the above case. Therefore, it suffices to determine the place where the blindfold shading is provided according to the focus. When actually providing a blinding shield, it is sufficient to irradiate the window with light from the direction in which the blocking is intended and provide the blocking blind at the position where each lens is in focus.

For the convenience of manufacturing, it is preferable that the light-shielding material for blindfold is a light-shielding substance that can be applied on the light-exiting surface of each lens, or an adhesive tape that can be attached. However, the position of each focal point of the lens fluctuates before and after the curvature of the lens. Therefore, it is possible to bring the focus of the lens to the rear of the light emitting surface. In such a case, for example, when the lens is a lenticular lens, a blind-shaped blinding shield can be provided at a position separated from the lens by a certain distance. Alternatively, a flat glass plate provided with a blinding shield as described above may be provided behind the window.

In order to make the focal point of the lens on the light exit surface without making the lens too thick, each lens may be made small and the curvature of the lens may be made large. It may be pointed out that there is a risk of fire as sunlight can penetrate through the lens and cause high temperatures, but the size of each lens can be reduced to lower the focus temperature. There is no such concern.

[0011]

[Action]

 Of the lines of sight looking into the room from the outside through a window in a house or building, the line of sight that is most worrisome is extremely narrow. That is, for example, when adjacent houses A and B each have windows in the parts facing each other, the line of sight from the adjacent house, which is the most annoying one, looks into every corner of the room, the so-called line of sight is the same. It is from the window in the sun.

Further, for example, in the case of a house facing the street, the eye height of a person passing through the street is 1.2 to 1. It is sufficient to consider it within the range of 7 m, and if the line of sight at such a height can be prevented, it will not be a problem in terms of daily privacy protection.

Therefore, FIG. 4 shows the mechanism of the privacy protection window, which is an example of the present invention, which is capable of introducing light substantially equivalent to that of transparent glass into the room while blocking the line of sight from the outside. It will be explained based on.

FIG. 4 is an enlarged view of one of the plurality of lenses forming the window surface of the present invention.

The line of sight b parallel to the optical axis c of the lens reaches the focal point f. On the other hand, the line of sight of the next house or street is within the limited range of the main points 5 and 6 as shown in FIG. The sight line 5 reaches the lower part of the blinding shield 3 after passing through the lens. Further, the line of sight 6 reaches the upper portion of the blinding shield 3 after passing through. Therefore, when there is a line of sight between 5 and 6, the line of sight is blocked by the blindfold shading 3 and does not reach the room. The position of the line of sight reaching the light exit surface of the lens fluctuates vertically depending on the distance from the lens surface to the viewpoint, for example, the distance from the window of the next house to the glass surface. On the other hand, since the focal length of the lens is sufficiently short, the moving distance of the arrival point is extremely small according to the same principle as that of the fixed-focus camera, and therefore the size of the blinding shield 3 can be made extremely small accordingly. it can. In this way, the total area of the blindfold shielding part can be made extremely small when compared with the entire window.

On the other hand, the sun ray “a” descends from the sky far above the line of sight, and after passing through the lens, passes under the light shielding member for blindfold and reaches the room.

From the above, as shown in FIG. 5, while blocking the line of sight 7 at the most disturbing height from the outside, it is possible to introduce a sun ray 8 that is substantially equivalent to transparent glass into the room. It will be possible.

[0018]

【Example】

 Next, an embodiment of the present invention will be described in more detail with reference to the drawings. FIG. 1 shows an example window 1 of the present invention. In this window 1, a light-shielding substance is applied as a blinding light shield 3 with a constant width on the light exit surface of the lenticular lens 2.

FIG. 2 shows another example window 1 of the present invention. In this window glass, the focal point of the lenticular lens 2 is behind the light exit surface of the lens. Therefore, the blindfold shading 3 is provided at a position separated from the lenticular lens by a certain distance in the form of a coarse blind 4, like a blind.

As described above, when the blindfold shielding material 3 is separated from the window 1, the position of the blocked line of sight can be easily changed by moving the blindfold shielding material 3 up and down. You can

FIG. 3 shows another example window 1 of the present invention. The window 1 is partitioned in a grid pattern, and each partition has a thick wall to form a lens 2. The blind shield 3 has a light-shielding substance applied on the light exit surface in the form of a circle having a constant diameter.

[0022]

[Effect of device]

 As described above, the privacy protection window of the present invention is composed of a plurality of lenses, and in each of the lenses, the light in the direction of the line of sight from the outside is focused on the light exit side of the lens. By providing a blinding light shield near the focal point that connects the lines, it is possible to completely block the line of sight from the outside in the direction of concern, and for the light from other directions, it is substantially transparent glass. The effect of being able to take in light equivalent to that in the room is obtained.

[Brief description of drawings]

FIG. 1 is a partial perspective view of an example window of the present invention.

FIG. 2 is a partial perspective view from the back of a window of another example of the present invention.

FIG. 3 is a partial perspective view of a window according to still another example of the present invention.

FIG. 4 is an explanatory view showing a state of light passing through a lens forming a window of the present invention.

FIG. 5 is an explanatory view showing a state in which the window of the present invention is installed.

[Explanation of symbols]

 1, privacy protection window 2 lens 3 blinder light shield 4 blind 5,6, 7 line of sight 8 sun ray a sun ray b sight line c optical axis f focus

Claims (3)

[Scope of utility model registration request] 1. The window surface is composed of a plurality of lenses, and in each of the lenses, a light-shielding object for blinding is provided in the vicinity of the focal point at which the light in the line-of-sight direction from the outside is focused on the exit side of the lens. Windows for privacy protection. 2. The privacy protection window according to claim 1, wherein the blinding shield is provided on the light exit surface of the lens. 3. The privacy protection window according to claim 1, wherein the lens is a lenticular lens.