JPH1122344A - Double glazing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reflection member in the inside of a double glazing and adjust an amount of daylighting. SOLUTION: A pair of support members are provided on both side ends between two glass plates 2 adhered and opposed through a spacer 3 on the circumference. A plurality of folding, circular or step-like plate-like members 5 in which the cross section shape of the longitudinal direction and the orthogonal direction has the inclination angle of two stages or more by the long plate- like member 5 of light reflection between the pair of the support members are fixed in parallel at intervals. Light from the outside of a room is reflected on the plate-like member 5, and an amount of daylighting is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double glazing system in which a reflective member is provided inside a double glazing plate so that the amount of light can be adjusted.

[0002]

2. Description of the Related Art Conventionally, glass plates have been frequently used for exterior materials of buildings and the like for the purpose of lighting and design effects, but in recent years, in particular, the use of double-glazing has increased for the purpose of energy saving effects. There is a tendency.

[0003] The double-glazing used for the windows of buildings and the openings of top lights and the like is usually formed by a desiccant-containing spacer disposed between two edges of two glass plates facing each other. It is general and often used to hold and adhere at predetermined intervals and further hermetically seal the periphery with an elastic sealing material to keep the air between the two glass plates in a dry state. Are known.

[0004] As a device devised on the daylighting surface, for example, the publication of International Publication No. WO93 / 25792 relates to a transparent body constituting a daylighting window at an opening such as a ceiling, floor, or wall surface of a general building. More specifically, it gives optical changes such as refraction and reflection to sunlight entering the opening from the outside, and changes due to the annual and diurnal movements of the sun in a static use state in which the transparent body is fixedly installed. The present invention discloses a transmissive body that selectively controls the amount of sunlight and adjusts the amount of light and the range of daylight to control the amount of heat in the indoor space, and a method of adjusting the amount of light and the range of daylighting using the transmissive body. ing.

[0005] Alternatively, Japanese Patent Application Laid-Open No.
No. 73968 describes an angle adjusting mechanism for forming a frame of a transparent multilayer body or a holder for each refracting material, and appropriately adjusting the angle of the optical surface of each refracting material by the angle adjusting mechanism. Light is detected while adjusting the amount of light and the range of light by appropriately using the function of the refraction material, or by connecting a control device equipped with a light amount detector to the drive source of the angle adjustment mechanism, and detecting the amount of light. There is disclosed a daylighting adjustment method for automatically adjusting the angle of the optical surface of each refraction material in accordance with the amount of sunlight incident or the amount of daylight detected by the section.

[0006] Alternatively, there is known a double-glazing unit with built-in blinds in which a blind generally used for a window glass of a building is provided in the double-layer glass to shield the sunlight of the strong sun.

[0007]

SUMMARY OF THE INVENTION International Publication No. WO93
/ 25792, and JP-A-6-73968.
In the publication, when the altitude of the sun is low, the sunlight is transmitted through and refracted into the interior of the double-glazed laminated glass in which a plurality of refraction columns are arranged in parallel to each other,
When the altitude of the sun is high, let the sunlight pass through the refraction column,
It is designed to reflect sunlight on the surface of the refraction column to block sunlight.There is no problem in lighting because sunlight passes through the refraction column, but the proportion of the refraction column in the air layer of the double-glazed glass However, there is a problem that the visibility is greatly reduced or eliminated because of the large size. Further, in Japanese Unexamined Patent Publication No. Hei 6-73968, a driving device or the like for adjusting the angle of each refractive material is required, and the structure is complicated. There was also a problem.

[0008] Alternatively, the double-glazed glass with built-in blinds blocks direct sunlight by adjusting the angle of the slats, has only a light-shielding function without transmission or reflection, and is movable with the blinds incorporated in the double-glazed glass. However, there is a problem that the structure is complicated due to this.

[0009]

DISCLOSURE OF THE INVENTION The present invention is directed to a double glazing having a simple structure, capable of adjusting the amount of light to be collected, and having transparency, and having both a design effect and an energy saving effect. A pair of support members is provided on both side ends between two opposing glass plates adhered to each other with a spacer interposed therebetween, and a long light-reflective plate member between the pair of support members, which is perpendicular to the longitudinal direction. The cross-sectional shape of the direction is a polygonal line shape having an inclination angle of two or more stages, or an arc shape, or a plate-like member having a step shape is fixedly arranged in parallel at a plurality of intervals,
The light from the outdoor is reflected by the plate-shaped member to adjust the amount of light collected, or one of the double-glazed glass is made of netted glass or lined glass, or an outdoor glass plate of the double-glazed glass The present invention provides a double-glazed glass comprising a heat ray reflective glass.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a double-glazed glass 1 according to the present invention comprises two opposing glass sheets which are bonded to each other through a spacer 3 and hermetically sealed with an elastic sealing material 4. A pair of support members 6, 6 are provided on both side ends between the glass plates 2, 2, and the pair of support members 6, 6 are formed of glass plates 5, 5,... With a tilt angle with respect to the plate surface, multiple sheets are fixed in parallel at intervals,
It is a louver-shaped one adjusted so that direct sunlight 7 from the outside can enter the room by reflection on the surfaces of the plate-like members 5, 5,....

Each of the plate-like members 5, 5,... Is made of a metal such as aluminum or a resin having a light reflecting surface, or the like.
As illustrated in FIG. 3, a cross-sectional shape in the longitudinal direction and the direction perpendicular to the polygonal line has a substantially “I” -like shape having two or more stages of inclination angles, or a continuously changing arc shape (part of a circle, A part of an ellipse, including a substantially circular arc) or a step-like shape. The plate-shaped members 5, 5, ... are arranged in parallel at a constant interval with an appropriate interval of about the width thereof, and are fixed to the pair of support members 6, 6, so that the indoor to the outdoor The transparency is good, and the visual field is not impaired.

According to the double glazing 1 of the present invention, nearly 100% of the direct sunlight is reflected outside on the surface of the plate member 5 in the hottest season in summer, and 100% in the winter.
It is a near-incorporation type, in which the amount of sunlight entering the room changes as the altitude of the sun changes depending on the time of day, but even if it completely blocks direct sunlight in all summer time periods. In addition, it is not intended to allow sunlight to enter the room over all time zones in winter. For this reason, the mounting angle of the plate-like member 5 is slightly different depending on the region where it is installed, and also differs depending on the installation angle of the double glazing 1, and an optimum angle is set in advance in accordance with the installation region and the mounting angle of the double glazing 1. Prepare and fix it.

Now, when the double-glazed glass 1 of the present invention is used for a top light,
In most cases, the mounting angle of the louver plate member 5 is determined from the incident angle of sunlight and the installation angle of the double glazing 1.

For example, as shown in FIG. 4, the cross-sectional shape of the louver plate-like member 5 is a substantially no-shaped polygonal line composed of two straight lines, and the installation angle of the double-glazing 1 of the top light is set to a horizontal plane. If the angle of the portion of the plate-like member 5 closest to the indoor side with respect to one surface of the double-glazed glass is 22.5 degrees with respect to one surface of the double-glazed glass when attached with an inclination (for example, 38.0 degrees), 36 degrees north latitude At the time point 12:00 at the point of time, the incident angle of the summer solstice in the summer is 74.6 degrees, so that the solar ray 7 is reflected 100% outdoors on the outdoor surface of the plate member 5 of the polygonal line-shaped substantially louvered louver. Thus, the incidence on the indoor side is 0%.

Under the same conditions, the winter solstice incident angle in winter is 33.9.
As shown in FIG. 5, 50% of the incident sunlight directly into the room between the louver plate members 5 as shown in FIG.
And 50% of so-called indirect incidence, which reflects off the outdoor surface of the plate member 5 and reflects on the indoor surface of the adjacent plate member 5 and then enters the room, so that the total incidence into the room is 100%.
And 0% is reflected outside the room.

In this way, 100% of the sunlight at the highest altitude of the summer solstice is reflected outside the room, and 10% of the sunlight at the winter solstice is reflected.
0% of the plate-shaped member 5 of the double-glazed glass 1
If is fixed in a double-glazed glass, the lighting can be adjusted with a simple configuration.

Further, the double glazing 1 may be used as a window. In this case, if the plate members 5, 5,... Are provided at appropriate intervals, the transparency from the room to the outside is not impaired.
Further, if the indoor side of the glass plates 2 and 2 constituting the multilayer glass 1 is made of meshed glass or lined glass, scattering at the time of breakage is prevented. If the heat ray reflection glass is used, the energy saving effect will be further enhanced.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a double glazing 1 according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. [Embodiment 1] Figs. 4 and 5 show lighting simulations of an embodiment in which the double glazing 1 of the present invention is used for a building top light.

The cross section of the plate member 5 of the louver shown in FIG. 4 is a substantially no-shaped polygonal line composed of two straight lines. 2
2.5 degrees and 36 degrees. The installation angle of the double-glazed glass 1 of the top light was set to be 38.0 degrees with respect to the horizontal plane. In this case, since the incident angle of the sunlight at the time of the summer solstice in the summer is 74.6 degrees at the point of latitude 36 degrees north at 12 o'clock, the sun rays are bent line-shaped, substantially no-shaped louver plate members 5. 100% on the outdoor surface
The light is reflected outside and the incidence on the indoor side is 0%.

Under the same conditions, the incident angle of the sunlight at the winter solstice in winter is 33.9 degrees, so that the sunlight is not blocked by the louver plate member 5 as shown in FIG. 50% of the sunlight directly entering the room between the plate-shaped member 5 and the plate-shaped member 5 is reflected on the outdoor surface of the plate-shaped member 5 and then enters the room, or is reflected on the indoor-side surface of the adjacent plate-shaped member 5. The sum of 50% of the so-called indirect incidence that enters the room after being reflected is 100% for the total incidence into the room, and 0% is reflected outside the room. [Embodiment 2] Figs. 6 and 7 show a lighting simulation of another embodiment using the double-glazing 1 of the present invention as a top light.

The sectional shape of the plate member 5 of the louver shown in FIG. 6 is a circular arc with a radius of 20 mm, and the outside of the plate member 5 is attached in a convex shape. The installation angle of the double-glazed glass 1 for the top light is 3
It was attached with an inclination angle of 8.0 degrees. In this case, since the incident angle of the sunlight at the time of the summer solstice in the summer is 74.6 degrees at the point of latitude 36 degrees north at time 12:00, the solar ray 7 is a chamber of the arc-shaped louver 5 having a cross section of a radius of 20 mm. 70% of the outside reflection occurs on the outer convex surface, and the plate-like member 5
Is reflected directly on the interior of the room after being reflected on the convex surface, or is reflected on the interior concave surface of the adjacent plate-like member 5 and then enters the room, so-called indirect incidence is 30%.

Under the same conditions, the incident angle of sunlight at the solstice in winter is 33.9 degrees, so that the sunlight is not blocked by the louver plate-like member as shown in FIG. 35% of the sunlight directly enters the room between the plate-like members 5 and enters the room after reflecting the outdoor surface of the plate-like member 5 or enters the indoor surface of the adjacent plate-like member 5. A total of 60% of the light enters the room together with 25% of the so-called indirect light incident into the room after being reflected, and 40% is reflected outside the room.

When the cross-sectional shape of the plate-like member 5 is a circular arc having a convex outside, the difference in the amount of sunlight incident between summer and winter is about 30%, and the effect is somewhat reduced. Become. [Embodiment 3] FIGS. 8 and 9 show another embodiment in which the double-glazed glass 1 of the present invention is used for a top light. A lighting simulation is shown below.

The cross section of the plate member 5 of the louver shown in FIG. 8 is an arc having a radius of 23 mm, and the outside of the plate member 5 is mounted in a concave shape. The installation angle of the double-glazed glass 1 for the top light is 3
It was attached with an inclination angle of 8.0 degrees. In this case, since the incident angle of the sunlight at the time of the summer solstice is 74.6 degrees at the point of latitude 36 degrees north at the time of 12:00, the solar ray 7 is a chamber of the arc-shaped louver 5 having a sectional shape of a radius of 23 mm. 95% of the light is reflected outside by the concave surface on the outside, and the plate-like member 5
The so-called indirect incidence which enters the room after reflecting the concave surface on the outside of the room and reflecting on the convex surface on the indoor side of the adjacent plate-like member 5 after reflection is 5%.

Further, since the incident angle of sunlight at the solstice in winter is 33.9 degrees under the same conditions, the sunlight is not blocked by the louver plate member 5 as shown in FIG. 35% of the sunlight directly entering the room between the plate-like members 5 of the above-mentioned plate-like member 5 becomes 35%, and enters the room after reflecting off the outdoor concave surface of the plate-like member 5 or the indoor side of the adjacent plate-like member 5 In addition to the so-called indirect incidence of 30%, which enters the room after being reflected on the convex surface, the total incidence into the room becomes 65%,
35% of the light is reflected outside the room. [Embodiment 4] FIGS. 10 and 11 show another embodiment in which the louvered double-glazed glass 1 having a cross-section of the arc-shaped plate member 5 of the embodiment 5 having an arc radius of 41 mm is used as a top light. 4 shows a lighting simulation of the embodiment.

The cross section of the plate member 5 of the louver shown in FIG. 10 is a circular arc having a radius of 41 mm, and the plate member 5 is mounted with a concave outside. The installation angle of the double-glazed glass 1 of the top light was set to be 38.0 degrees with respect to the horizontal plane in the same manner as described above. in this case,
At the point of latitude 12 degrees north latitude at time 12:00, since the incident angle of sunlight at the summer solstice in the summer is 74.6 degrees, the sunlight is concave outside the arc-shaped louver 5 having a cross section of 41 mm in radius. Is reflected directly to the outside on the surface of the plate member, and after being reflected on the convex surface on the indoor side of the adjacent plate member 5, further reflected outside by the concave portion of the original plate member 5. Is 95%. After reflecting the concave surface on the outdoor side of the plate-shaped member 5 and then reflecting on the convex surface on the indoor side of the adjacent plate-shaped member 5 and then incident on the indoor side, the so-called indirect incidence is 5
%.

Also, under the same conditions, the incident angle of sunlight at the solstice of winter is 33.9 degrees, so that the solar ray 7 is
As shown in FIG. 1, 35% of the sunlight directly enters the room between the louver plate members 5 without being blocked by the louver plate members 5, and the outdoor concave portion of the plate member 5 becomes 35%. The total incident light into the room becomes 95% together with 60% of so-called indirect light incident on the room after reflecting the surface into the room or after being reflected on the indoor convex surface of the adjacent plate-like member 5 to be 95%. The reflection is 5%.

If the cross-sectional shape of the plate-like member 5 is formed in a circular arc shape having a concave outside as described above, the difference between the incident amounts of sunlight in summer and winter can be up to about 90%, which is effective. [Embodiment 5] FIGS. 12 and 13 show a louver plate member 5.
A lighting simulation of still another embodiment using a double-glazing 1 as a top light, in which the cross-sectional shape of the glass is stepped, is shown.

The cross-sectional shape of the louver plate-like member 5 shown in FIG. 12 is stepwise on both the inside and the outside, and the plate-like member is attached as shown in FIG. The installation angle of the double-glazed glass 1 of the top light was set to be 38.0 degrees with respect to the horizontal plane in the same manner as described above. In this case, since the incident angle of the sunlight at the time of the summer solstice is 74.6 degrees at the point of latitude 36 degrees north at the time of 12:00 at the time of 12:00, the sun rays are directly on the outdoor surface of the louver 5 having a stepped cross section. The light is reflected outside the room, the outdoor reflection is 100%, and the indoor incidence is 0%.

Since the incident angle of the sunlight 7 at the winter solstice in winter is 33.9 degrees under the same conditions, the sunlight 7 is not obstructed by the louver plate member 5 as shown in FIG. ,
85% of sunlight directly entering the room between the louvered plate members 5 and the plate members 5 is reflected into the outdoor concave surface of the plate member 5 and then enters the room, or the room of the adjacent plate member 5 Since the so-called indirect incidence which enters the room after being reflected on the inner convex surface is 0%, the incidence into the room is 8% of the direct incidence.
Only 5% is reflected, and 15% is reflected outside the room.

If the cross-sectional shape of the plate member 5 is stepped as described above, the difference between the incident amounts of sunlight in summer and winter can be up to about 85%, which is effective. Comparative Example 1 FIGS. 14 and 15 show, as comparative examples, lighting simulations using a double-glazed glass 1 having a straight louver shape as a top light.

The cross-sectional shape of the plate member 5 of the louver shown in FIG. 14 is linear, and the mounting angle of the plate member 5 is 22.5 degrees with respect to the surface of the glass plate 2. The installation angle of the double-glazed glass 1 of the top light was set to be 38.0 degrees with respect to the horizontal plane. In this case, since the incident angle of the sunlight at the time of the summer solstice in the summer is 74.6 degrees at the point of latitude 36 degrees north at time 12:00, the sunlight is outside the louver plate-like member having a linear cross section. 100 on the surface
%, The reflected light is 0%.

Under the same conditions, the incident angle of sunlight at the solstice of winter is 33.9 degrees.
As shown in (2), the sunlight directly entering the room between the louver plate members 5 without being blocked by the louver plate members becomes 25%, and reflects the outdoor surface of the plate member 5. 30% of the so-called indirect incidence that enters the rear room or reflects into the indoor surface of the adjacent plate member 5 and then enters the room
Therefore, the total incident light into the room is 55%, and the amount reflected outside the room is 45%. Comparative Example 2 FIGS. 16 and 17 show, as another comparative example, a lighting simulation using a double-glazed glass 1 having a straight louver shape as a top light.

The cross-sectional shape of the louver plate member 5 shown in FIG. 16 is linear, and the mounting angle of the plate member 5 is 32.6 degrees with respect to the surfaces of the glass plates 2 and 2. The installation angle of the double glass 1 of the top light is 38.
It was mounted with a 0 degree inclination angle. In this case, time 1
At 2 o'clock at 36 degrees north latitude, the incident angle of sunlight at the summer solstice in the summer is 74.6 degrees, so that the solar rays 7 are on the outdoor surface of the louver-shaped plate member 5 having a linear cross section. The so-called indirect incidence of 80% of the light reflected outside and reflected on the outdoor surface of the plate member 5 and then reflected on the indoor surface of the adjacent plate member 5 and then enters the room is 20%.

Further, since the incident angle of sunlight at the solstice of winter is 33.9 degrees under the same conditions, the sunlight 7 is
As shown in FIG. 7, the sunlight directly entering the room between the louver plate members 5 and the plate members 5 without being interrupted by the louver plate members 5 becomes 40%, and the outdoor surface of the plate member is removed. 50% of the so-called indirect incidence that enters the room after reflection or enters the room after reflecting on the indoor surface of an adjacent plate-like member
In total, 90% of the light enters the room, and 10% of the light is reflected outside the room.

When the cross-sectional shape of the plate-shaped member 5 is linear as described above, the outdoor reflection in the summer season is 100% at the louver angle of 22.6 degrees, but the indoor incidence in the winter season is only 55%. Angle 32.6 to increase the difference between
Although the degree is good, the difference between the incident amounts in summer and winter is about 70%.

Table 1 below summarizes the above-described embodiments, modifications thereof, and comparative examples.

[0038]

[Table 1]

Table 1 shows that the cross-sectional shape of the plate member of the double-glazed glass 1 containing the louver is a polygonal line shape shown in Example 1,
It can be seen that the arc shape shown in Example 4 and the step-like shape shown in Example 5 have an effect that outdoor reflection is particularly large in summer and conversely, indoor incidence becomes large in winter.

Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered. The glass sheet constituting the double-layer glass may be a raw glass sheet, a semi-tempered glass sheet, a tempered glass sheet, a netted glass sheet, a glass sheet with a wire or a laminated glass sheet obtained by combining the above glass sheets with PVB or EVA, and Also, those in which a scattering prevention film is adhered to the glass plate surface are included.

Further, a heat ray reflective film, an ultraviolet ray reflective film or the like may be provided on the surface of the glass plate by coating or vacuum deposition.

[0042]

The present invention has a simple structure in which the louver plate member is fixed. When sunlight is strong in summer, direct sunlight is reflected outside by the louver plate member to block out the sunlight. And the louvers are reflected by the louvered plate-like members so that they are incident on the room. Therefore, the energy-saving effect is high, and since the plate-like members are arranged at appropriate intervals, the transparency from the indoor side to the outdoor side is impaired. It can also have a design effect without being affected.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a louver-containing double-glazed glass according to the present invention.

FIG. 2 is a perspective view of a louver of the present invention.

FIG. 3 is a sectional view of a modified embodiment of the louver of the present invention.

FIG. 4 is a view showing a lighting simulation in summer in the first embodiment of the present invention.

FIG. 5 is a diagram illustrating a lighting simulation in a winter season according to the first embodiment of the present invention.

FIG. 6 is a diagram illustrating a lighting simulation in summer in the second embodiment of the present invention.

FIG. 7 is a diagram illustrating a lighting simulation in a winter season according to the second embodiment of the present invention.

FIG. 8 is a diagram showing a lighting simulation in summer in the third embodiment of the present invention.

FIG. 9 is a view showing a lighting simulation in a winter season according to the third embodiment of the present invention.

FIG. 10 is a diagram showing a lighting simulation in summer in the fourth embodiment of the present invention.

FIG. 11 is a diagram showing a lighting simulation in a winter season according to the fourth embodiment of the present invention.

FIG. 12 is a view showing a lighting simulation in summer in the fifth embodiment of the present invention.

FIG. 13 is a view showing a lighting simulation in a winter season according to the fifth embodiment of the present invention.

FIG. 14 is a view showing a lighting simulation in summer of Comparative Example 1 of the present invention.

FIG. 15 is a view showing a lighting simulation in winter in Comparative Example 1 of the present invention.

FIG. 16 is a diagram showing a lighting simulation in summer of Comparative Example 2 of the present invention.

FIG. 17 is a diagram illustrating a lighting simulation in winter in Comparative Example 2 of the present invention.

[Description of Signs] 1 Double-glazed glass 2 Glass plate 3 Spacer 4 Sealing material 5 Louver 6 Supporting member 7 Sunlight 8 Indoor incident light 9 Outdoor reflected light

Claims (3)

[Claims] 1. A pair of support members are provided on both side ends between two opposing glass plates adhered to each other via a spacer,
A light-reflective elongate plate-shaped member between the pair of support members, the cross-sectional shape of the elongate direction and the direction perpendicular to the elongate direction has a polygonal line shape or an arc shape, or a step shape having an inclination angle of two or more steps. A double glazing characterized in that a plurality of plate-like members are fixedly arranged in parallel with a space therebetween, and light from the outside is reflected by the plate-like members to adjust the amount of collected light. 2. The double-glazed glass according to claim 1, wherein one of the double-glazed glasses is a netted glass or a lined glass. 3. The double glazing according to claim 1, wherein the glass sheet on the outdoor side of the double glazing is a heat ray reflective glass.