JP2020060081A - Screening member - Google Patents

Abstract

To provide a blind and a shade which are most mainly characterized by efficient heat transfer in an indoor-side direction; and also, it becomes possible to prevent heat release from a window by installing a blind or a shade with heat storage property for preventing heat release from the window between a room inside and the window.SOLUTION: A selective absorbing film 6 transforming an infrared wave of the sun into heat is provided on an outer surface of a blind or a shade to efficiently transform sunlight into thermal energy and raise a room temperature. The blind is made of aluminum, and heat is conducted to a back side by heat conduction and then released to a room inside. Furthermore, a latent heat storage material 8 is applied or attached to the back side and provided with heat storage property to store daytime heat, maintain a state change temperature for a certain period of time during the night, and then release the heat.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a blind roll screen that collects and stores heat easily for solar heating.

  Blinds and roll screens have been put into practical use for the purpose of blocking the sunlight and preventing the temperature of the room from rising and for blinding the room. Blinds and roll screens are expected to suppress summer temperature rise when closed. Since it looks modern in terms of design, it was practically enough to be used as a substitute for curtains.

  However, even if the blinds and the roll screen are opened in the winter and the solar radiation from the window is taken in the room, the room temperature rises to some extent, but the effect as a heat source for heating is not obtained. Recent homes are highly airtight and highly insulated homes, and the heat loss from the walls, floors, windows, etc. during heating and cooling is extremely small, but the consumption of heating energy in winter is still the highest. Many.

  As a national characteristic of Japan, it is not easy to take solar heat energy directly into the room because it is customary to close the curtains when going out due to crime prevention, and the daytime sunlight cannot be taken into the room. Conventional blinds are effective in terms of designability and illuminance, but do not have sufficient functions in terms of effectively utilizing solar energy. Moreover, when the heating device is operated in a cold room, there is a problem that a large amount of energy is required to raise the temperature to the set room temperature.

  The problem to be solved is that the blind is made for the purpose of blocking light and cannot collect heat. In winter, heat radiation from windows accounts for about 52% of the whole house, and it is the place where the indoor temperature drops most.

  The present invention is characterized in that the selective absorption film is applied or attached to the surface of the blind or roll screen made of aluminum, so that heat is efficiently transmitted in the room direction. Further, by installing a blind or a roll screen having heat storage performance between the room and the window in order to prevent heat radiation from the window, it is possible to prevent heat radiation from the window.

In order to solve the above problems, the present invention is a shielding material that is arranged inside a window to shield sunlight, the shielding material being a heat storage material and a selective absorption film provided on the surface of the heat storage material. It is characterized by being composed of.

  Further, in the present invention, the shielding material is characterized in that a heat shielding material is provided on a back surface of the heat storage material.

  Further, in the present invention, the selective absorption film is characterized by selectively absorbing only infrared wavelengths out of wavelengths of sunlight and converting the infrared rays into heat energy.

  The blind or roll screen of the present invention is mainly installed on the indoor side of the window glass to collect sunlight during the day, and the heat storage part of the blind or roll screen is 45 to 55 ° C. Becomes Since the latent heat storage material is used in the heat storage section, the blind or roll screen maintains the state change temperature for a certain period of time even at night, and then the temperature decreases. Further, since an air layer is formed between the window and the blind or roll screen, heat radiation from the window can be reduced. As a result, there is an advantage that the amount of electric power and fossil fuel used for heating at room temperature can be reduced, and the amount of CO2 generated, which is one of the causes of global warming, can be reduced.

It is a perspective view of the blind concerning the present invention. It is a figure which shows the detailed structure of the slat part in FIG. It is the sectional view on the AA line in FIG. It is a perspective view of the roll screen (open) which concerns on this invention. It is a perspective view of the roll screen (open) which concerns on this invention. It is the BB sectional view taken on the line in FIG.

  An embodiment (blind) of the present invention will be described with reference to FIGS. In the solar thermal blind shown in FIG. 1, the rail mounting bracket 3 is fixed to the frame of the window 5 with wood screws or the like. After mounting all the rail mounting brackets 3, the rail 4 is fitted into the rail mounting bracket 3. After fitting, the slat 1 is hung on the slat rotating fitting 2 incorporated in the rail 4. The slats 1 are vertical, and in some cases horizontal. In addition, the number of slats 1 is selected according to the installation location and a plurality of slats are installed.

  The slat 1 of FIG. 2 is fixed to the slat rotating fitting 2 and can rotate. The rotation direction is one-sided rotation, and rotation is performed up to 180 degrees.

  The slat 1 described above includes a selective absorption film 6 that collects solar heat on the surface of the latent heat storage material 8 and a heat shield material (reflective film) 7 that shields sunlight on the back surface of the latent heat storage material 8 as shown in the sectional view of FIG. Is a three-layer structure.

  In the summer, the heat shield (reflection film) 7 is rotated outdoors and the selective absorption film 6 is rotated indoors. By the above implementation, it is possible to shield the sunlight and reduce the rise in indoor temperature.

  In winter, the selective absorption film 6 is rotated outdoors and the heat shield (reflection film) 7 is rotated indoors. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise.

  By providing the selective absorption film 6 for converting the infrared rays of the sun into heat on the outer surface of the blind or roll screen, the sunlight is efficiently converted into heat energy and the latent heat storage material 8 stores the heat. The infrared waves of the sun pass through the window glass and are converted into heat by the selective absorption film 6 provided in the blind. The blind is made of aluminum and conducts heat to transfer heat to the back surface, which stores heat in the latent heat storage material 8 and dissipates it indoors. Not only the daytime heat is used by the latent heat storage material 8 in the daytime, but also by applying or pasting the latent heat storage material 8 on the back surface, the solar heat can be used even after sunset.

The role of the latent heat storage material 8 applied or affixed to the back surface of the blind or roll screen is to store heat during the daytime, maintain the state change temperature for a certain period at night, and then release it. Therefore, the latent heat storage temperature higher than the outside temperature in winter must radiate the temperature of 20 to 50 ° C. for several hours. The latent heat storage material 8 contained in microcapsules is used for the paint or the sticking sheet in order to stabilize the temperature. Since the latent heat storage material 8 is a material that utilizes the temperature characteristic at the phase transition between the solid and the liquid, it liquefies at a temperature above the melting point. Therefore, the latent heat storage material 8 needs to be enclosed in microcapsules in order to apply or sheet-form the blind or the back surface of the roll screen.
* 1 Latent heat storage material 8: Latent heat is the heat generated or absorbed by a substance to change the state of a solid, liquid or gas without changing its temperature. In the latent heat storage material 8 of the present invention, the heat storage utilizes latent heat when changing from liquid to solid.

  In spring and autumn, the above-described method is used to rotate the selective absorption film 6 in the outdoor direction and the heat shield (reflection film) 7 in the indoor direction when it is desired to raise the indoor temperature. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise. When it is not desired to raise the indoor temperature, the selective absorption film 6 is rotated outdoors and the heat shield (reflection film) 7 is rotated indoors. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise. This operation is adjusted according to the situation.

  In the above embodiment, the latent heat storage material 8 is a white material, for example, a non-woven fabric. The reflectance of white is 70%, and high reflectance can be expected. (Comparing the reflectance in terms of color is 4% for black). Also, by attaching a heat shield (reflection film) 7 to the surface of the latent heat storage material 8, it is possible to further improve the reflectance.

  Next, a second embodiment (roll screen) of the present invention will be described with reference to FIGS. In the roll screen 9 shown in FIG. 4, the roll screen mounting bracket 11 is fixed to the frame of the window 5 with wood screws or the like. After all the roll screen mounting brackets 11 have been mounted, the roll screen rail 10 is fitted into the roll screen mounting bracket 11. After fitting, the roll screen 9 is wound inside the roll screen rail 10. The size of the roll screen 9 is selected according to the installation location.

  4 and 5 show how to use the roll screen 9. FIG. 4 is a diagram showing a state in which the roll screen 9 is wound. FIG. 5 is a diagram showing a state in which the roll screen 9 is pulled. The roll screen 9 is installed by being wound around the roll screen rail 10 and can be opened and closed manually. Further, the roll screen rail 10 can be detached from the roll screen mounting bracket 11, and the rear surface and the front surface can be switched according to the seasonal application.

  In the roll screen 9 described above, the selective absorption film 12 that collects solar heat on the surface of the latent heat storage material 14 and the heat shield material (reflection film) 13 that shields sunlight on the back surface of the latent heat storage material 14 as shown in the sectional view of FIG. It has a three-layered structure.

  In the summer, the heat shield (reflection film) 13 is installed outdoors and the selective absorption film 12 is installed indoors. By the above implementation, it is possible to shield the sunlight and reduce the rise in indoor temperature.

  In the winter, the selective absorption film 12 is rotated outdoors and the heat shield (reflection film) 13 is rotated indoors. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise.

  In spring and autumn, the above-mentioned method is fully used, and when it is desired to raise the indoor temperature, the selective absorption film 12 is attached outdoors and the heat shield (reflection film) 13 is attached indoors. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise. If it is not desired to raise the indoor temperature, the selective absorption film 6 is installed outdoors and the heat shield (reflection film) 13 is installed indoors. With the above implementation, it becomes possible to collect heat from sunlight, and it is expected that the indoor temperature will rise. This operation is performed depending on the situation.

  In the above embodiment, the latent heat storage material 14 is a white material, for example, a non-woven fabric. The reflectance of white is 70%, and high reflectance can be expected. (Comparing the reflectance in terms of color is 4% for a black system) Also, by attaching a heat shield (reflection film) 13 to the surface of the latent heat storage material 14, it is possible to further improve the reflectance.

1 slat 2 slat rotating bracket 3 rail mounting bracket 4 rail 5 window 6 selective absorption film 7 heat shield (reflection film)
8 Latent heat storage material 9 Roll screen 10 Roll screen rail 11 Roll screen mounting bracket 12 Selective absorption film 13 Heat shield (reflection film)
14 Latent heat storage material

Claims (5)

  A shielding material arranged inside a window for shielding sunlight, the shielding material being composed of a heat storage material and a selective absorption film provided on a surface of the heat storage material. Material.   The shielding material according to claim 1, wherein the shielding material is provided with a heat shielding material on a back surface of the heat storage material.   The shielding material according to claim 1 or 2, wherein the shielding material is a blind which is divided into a plurality of pieces and can be inverted.   The shielding material according to claim 1, wherein the shielding material is a reversible roll screen.   The heat collecting material according to claim 1, wherein the selective absorption film selectively absorbs only infrared wavelengths out of wavelengths of sunlight and converts the infrared rays into heat energy.

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