JP2759412B2 - Solar shading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar shading device provided inside a window glass of a general building.

[0002]

2. Description of the Related Art In general, a solar shading device such as a blind, a screen, a curtain, or the like is provided on the indoor side of a window glass surface of a building for the purpose of preventing glare caused by solar radiation and reducing the penetration of solar radiation into the room. It is attached.

[0003] Among such solar shading devices, for example, there is a device that uses a blind in which a window glass is doubled and a blind is built in a hollow layer between the windows. In some cases, heat accumulated in the room is exhausted to reduce long-wave radiation heat to the occupants.

[0004]

The double-glazed window with a built-in blind as described above has the drawback that it is expensive and is difficult to spread, and the high heat insulating property radiates heat to the outside at night in summer. Hindering.

An object of the present invention is to eliminate the disadvantages of the prior art, to reduce the radiant heat to the room similarly to the double glazing with built-in blinds at a low cost and with a simple structure, and to reduce the radiant heat to the outside at night in summer. An object of the present invention is to provide a solar shading device capable of forming a comfortable environment without preventing heat radiation of the solar cell.

[0006]

According to the present invention, in order to achieve the above object, a blind composed of a plurality of slats is installed inside a window glass, and the indoor end of the blind has almost no air permeability. A transparent sheet was attached, and a sheet having air permeability and transparency was attached to the end of the outdoor side, or in addition to this configuration, the slats folded a heat-insulating cloth material into a substantially bag shape and The gist of the invention is to provide a hollow portion for forming an air layer.

[0007]

According to the first aspect of the present invention, the heat accumulated on the surface of the slat flows through the air-permeable sheet attached to the outdoor end of the slat, and flows out to the window surface side. The air is exhausted, for example, to an upper duct together with the rising air current on the surface. Further, the transparent sheet provided on the indoor side of the slat and having almost no air permeability can prevent radiant heat from entering the room. And since the sheet | seat of the outdoor side of a slat has see-through | transparency, and the sheet | seat of an indoor side is transparent, a view can be ensured if the slat is kept horizontal even if the blinds are lowered.

According to the second aspect of the present invention, since the air layer is formed on the slat itself in addition to the above operation, the heat insulating property is further improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional side view showing an embodiment of a solar shading device according to the present invention. In FIG. 1, reference numeral 1 denotes a window glass of a window, and a blind 3 composed of a plurality of slats 2 is provided inside the window glass 1.

Then, a transparent sheet 4 having little air permeability is attached to an end of the blind 3 on the indoor side of the slat 2 by using an adhesive, and a lace-like shape having air permeability and see-through property is attached to the outdoor end. The sheet 5 is adhered with a cloth or the like.

The slat 2 is made of a cloth having heat insulation and rigidity, and is folded into a flat, substantially bag-like shape to form an air layer 6 inside to improve the heat insulation. In this case, as shown in FIG. 3, the opening end portion bent into a bag shape slightly forms an opening 7 so as not to be completely closed and to prevent air from flowing into and out of the air layer 6. Are slightly adhered to the sheet 5 with the upper and lower ends thereof slightly apart.

An exhaust duct 8 is provided above the blind 3 provided with the transparent sheet 4 and the sheet 5 having air permeability and transparency, and an exhaust fan 9 is provided in the exhaust duct 8.
Is arranged.

Next, usage and operation will be described.
In order to shield the solar radiation from the outdoor, the sheet 5 on the outdoor side is pulled down as shown in FIG. 4, and the transparent sheet 4 on the indoor side is pulled up to tilt the slat 2 obliquely. In this state, the heat accumulated on the surface of the slat 2 passes through the outdoor sheet 5 and flows out to the window glass 1 side, and together with the rising airflow of the window surface, the exhaust fan 9 sends the heat to the upper exhaust duct 8. Exhausted. Therefore,
Inflow of solar radiation into the room can be greatly reduced.

Further, the transparent sheet 4 provided on the indoor side of the slat 2 can prevent radiant heat from entering the room. This allows
Since the flow of air to the indoor side can be prevented, the radiation environment around the window is improved. The transparent sheet 4 can also prevent the cold airflow (cold draft) generated along the window glass 1 from flowing into the room, so that the heat insulation load can be reduced while the heat insulating property can be improved particularly in winter. .

Further, since the air layer 6 is formed by providing a hollow portion in the slat 2, the heat insulating layer is formed by the air in the air layer 6, the heat insulating property of the slat 2 is also improved, and the solar shading action is further improved. It will be good. Further, since the slat 2 is made of cloth, it can provide visual softness due to its material.

Then, as shown in FIG. 5, if the slats 2 are placed in the horizontal position with the blinds 3 kept down,
A view of the outside world can be obtained through the transparent sheet 4 and the transparent sheet 5 while ensuring the heat insulation of the window, and the brightness can be taken into the room.

In order to pull up the blind 3, the transparent sheet 4 and the sheet 5 may be pulled up as shown in FIG.
There is no hindrance to heat radiation to the outside.

The blind 3 to which the transparent sheet 4 and the sheet 5 are attached can be retrofitted on the indoor side of the window glass 1, and an effect equivalent to double glass can be expected with a simple device.

[0019]

As described above, the solar shading device of the present invention has a low cost, a simple structure, and the same effect as the double glass with built-in blinds. Airflow (cold draft) can be prevented from flowing into the room, while radiant heat into the room can be reduced and high solar shading performance can be expected in summer.
In addition, the heat radiation to the outside can be prevented from being hindered at night in summer, and the view can be secured even with the blinds lowered, so that a comfortable environment can be formed throughout the year.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a solar shading device of the present invention.

FIG. 2 is a perspective view of a blind which is a main part of the solar shading device of the present invention.

FIG. 3 is a longitudinal sectional side view of a blind which is a main part of the solar shading device of the present invention.

FIG. 4 is a side view of the solar shading device of the present invention in a state in which a blind is closed.

FIG. 5 is a side view of the solar shading device of the present invention in a state where a blind is opened.

FIG. 6 is a side view of the solar shading device of the present invention in a state where a blind is rolled up.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Window glass 2 ... Slat 3 ... Blind 4 ... Transparent sheet 5 ... Sheet 6 ... Air layer 7 ... Opening 8 ... Exhaust duct 9 ... Exhaust fan

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masato Fujitani Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (58) Field surveyed (Int.Cl. ⁶ , DB name) E06B 9 / 26-9/388

Claims (2)

(57) [Claims] 1. A blind made of a plurality of slats is installed inside a window glass, a transparent sheet having almost no air permeability is attached to an indoor side end of the blind, and air permeability is provided to an outdoor end. A solar shading device having a transparent sheet attached thereto. 2. The solar shading device according to claim 1, wherein the slats are formed by bending a heat insulating cloth material into a substantially bag shape and providing a hollow portion for forming an air layer therein.