JP2019138135A - Screen and screen device - Google Patents

Abstract

To provide a screen and screen device, capable of reducing costs while securing high product quality.SOLUTION: A screen 10 is formed by weaving warp 24 and weft 22. For example, one face 10a thereof is disposed on the outdoor side of a building 14 and the other face 10b thereof is disposed on the indoor side of the building 14. The warp 24 and the weft 22 of the screen 10 are formed in different colors. On the one face 10a, an exposure ratio of the weft 22 is configured to be large; on the other face 10b, an exposure ratio of the warp 24 is configured to be larger than that on the one face 10a. Thereby, colors on the one face 10a and the other face 10b are configured to be different from each other.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a screen and a screen device used as a sunshade or a screen door of a building.

  Screens that can be shaded or blindfolded are sometimes installed on windows and terraces of buildings such as houses and stores. As this type of screen, there is a configuration in which warp and weft are plain woven (see, for example, Patent Document 1).

JP 2014-224374 A

  In the above screen, it is said that the outdoor side surface and the indoor side surface should be configured in different colors in consideration of appearance on the exterior of the building, blindfolding performance from the outdoor side, visibility from the indoor side, etc. There is a request. Conventionally, when changing the color of both sides of the screen, a colored PVC (polyvinyl chloride) coating or the like is applied to the surface of the fabric. However, since such a coating agent contains oil in the plasticizer, there is a concern that oil floating or dirt is generated on the surface of the screen and the product quality is lowered. Moreover, since the coating process with respect to cloth | dough is required, work cost and material cost increase.

  The present invention has been made in consideration of the above-described problems of the prior art, and an object thereof is to provide a screen and a screen device capable of reducing costs while ensuring high product quality.

  The screen according to the present invention is a screen formed by weaving warp and weft, wherein the warp and the weft are formed in different colors, and on one side, one of the warp and the weft The exposure ratio is large, and the exposure ratio of the other one of the warp and the weft is larger than the exposure ratio on the one surface.

  According to the present invention, even if the screen has a one-color two-color structure, the cost can be reduced while ensuring high product quality.

It is a side view which shows typically the state which installed the screen apparatus using the screen which concerns on one Embodiment of this invention in the building. 2A is a schematic view of the screen viewed from one side, and FIG. 2B is a schematic view of the screen viewed from the other side. FIG. 3A is a schematic view of a screen having a configuration with auxiliary wefts viewed from one side, and FIG. 3B is a schematic view of a screen with a configuration of auxiliary wefts viewed from the other side. . It is a schematic diagram of the cross-sectional shape which cut | disconnected the screen shown in FIG. 3 in the direction orthogonal to the longitudinal direction of a warp. It is the schematic diagram which looked at the screen of the structure which provided another auxiliary weft from the other surface. It is a typical front view of the screen apparatus which used the screen as a roll type screen door. It is typical sectional drawing of the bottom bar of the screen apparatus shown in FIG.

  Hereinafter, the screen according to the present invention will be described in detail with reference to the accompanying drawings by exemplifying a preferred embodiment by exemplifying a screen device using the screen.

  FIG. 1 is a side view schematically showing a state in which a screen device 12 using a screen 10 according to an embodiment of the present invention is installed in a building 14. In the present embodiment, a screen 10 that is provided so as to be movable up and down outside the window 14a of a building 14 such as a house or a store and functions as an awning that shields sunlight from the window 14a is illustrated. The screen 10 can also be used as a roll screen that moves up and down on the indoor side of the window 14a to shield the sun, a screen door that prevents intrusion of dust and insects from the opened window 14a, and the like.

  As shown in FIG. 1, the screen device 12 includes a roll 16 capable of winding and delivering the screen 10, and a main body box 18 that houses the roll 16. The screen device 12 can cover the outside of the window 14a by pulling the screen 10 downward from the main body box 18 attached to the upper outer wall surface of the window 14a. The roll 16 is elastically biased in the rotational direction in which the screen 10 is wound up. The screen 10 pulled out from the roll 16 can be locked at its lower end using a hook 20 on a floor surface 14b such as a terrace. Thereby, since the upper end receives tension in the winding direction from the roll 16 with the lower end supported by the hook 20, the screen 10 can be stretched with sufficient tension in the vertical direction without loosening.

  2A is a schematic view of the screen 10 viewed from the one surface 10a, and FIG. 2B is a schematic view of the screen 10 viewed from the other surface 10b. As shown in FIGS. 2A and 2B, the screen 10 is a net formed by weaving the warp yarns 24 and the weft yarns 22 in a mesh shape, and the warp yarns 24 and the weft yarns 22 have different colors. Is formed. As shown in FIG. 1, the screen 10 has one surface 10 a that is one side surface disposed on the outdoor side of the building 14, and the other surface 10 b that is the other side surface disposed on the indoor side of the building 14.

  The warp yarn 24 is a yarn extending along the winding direction and the feeding direction with respect to the roll 16. The weft yarn 22 is a yarn extending along a direction orthogonal to the warp yarn 24. That is, in the screen device 12 shown in FIG. 1, the warp yarns 24 extend in the vertical direction of the screen 10 drawn from the roll 16, and the weft yarns 22 extend in the left-right direction (width direction). In the case of this embodiment, the warp yarn 24 and the weft yarn 22 are monofilament yarns obtained by extruding two layers of polypropylene having a low melting point of about 130 (° C.) around a polypropylene showing a high melting point of about 165 (° C.). The warp yarns 24 and the weft yarns 22 are welded to each other at overlapping textures 26 and intersections 28. By using monofilament yarn, the weight of each yarn 22, 24 can be reduced. By fusing the intersections 28 and the like, it is possible to prevent displacement of the texture 26 and the yarns 22 and 24 in the product, and to reduce the thickness of the screen 10 itself. The diameters of the warp 24 and the weft 22 are, for example, about 0.10 to 0.50 (mm). In this embodiment, the diameter of the warp 24 is 0.15 (mm), and the diameter of the weft 22 is 0.30 (mm). In FIGS. 2A and 2B, the shapes of the warp yarn 24 and the weft yarn 22 are exaggerated, but in an actual product, for example, the warp yarn 24 and the weft yarn 22 are 20 in one inch square. About 100 are provided. Further, the warp yarn 24 and the weft yarn 22 may be blended with various additives such as an ultraviolet absorber, a light stabilizer, an antioxidant, a lubricant, an antistatic agent, and a flame retardant.

  As shown in FIG. 2A, on one surface 10a, the warp yarns 24 are arranged on the back side of the weft yarns 22 except for the weaves 26, and the weft yarns 22 are woven with the warp yarns 24 across the four warp yarns 24. Yes. That is, the weaves 26 are arranged along the longitudinal direction of the weft yarns 22, and the intervals are four warp yarns 24. For this reason, on one side 10 a, the exposure rate (surface area) of the weft yarn 22 is larger than the exposure rate of the warp yarn 24. In particular, in this embodiment, the weft 22 is thicker than the warp 24. As a result, on one surface 10a, the exposure ratio of the weft 22 is set to be about 70% with respect to the exposed areas of the warp 24 and the weft 22.

  As shown in FIG. 2B, on the other surface 10b, the weft 22 is arranged on the back side of the warp 24 except for the weave 26, and the warp 24 is woven with the weft 22 in a state of straddling the four wefts 22. ing. That is, the weaves 26 are arranged along the longitudinal direction of the warp yarns 24, and the intervals are four weft yarns 22. For this reason, on the other surface 10b, the exposure rate (surface area) of the warp yarn 24 is larger than the exposure rate on the one surface 10a. For example, the exposure rate of the warp yarn 24 is 50% of the exposed area of the warp yarn 24 and the weft yarn 22. It is set to be about.

  The number of the wefts 22 straddling the warp yarns 24 on one side 10a may be two or more depending on the weaving method called twill weave or satin weave. However, if too much, the arrangement interval of the weaves 26 becomes too long and melts. There is a concern that the warp yarns 24 and the weft yarns 22 may be displaced before the attaching process. Therefore, the weft 22 preferably has, for example, a configuration in which the warp yarns 24 are straddled every 3 to 5, and particularly preferably has a configuration in which the warp yarns 24 are straddled every four as described above. The same applies to the number of warps 24 straddling the wefts 22 on the other surface 10b.

  Thus, in the screen 10, the weft 22 straddles a plurality of warps 24 on one surface 10a, and the warp 24 straddles a plurality of wefts 22 on the other surface 10b. For this reason, the weaves 26 do not continue in the longitudinal direction of the warp yarns 24 between the adjacent wefts 22, 22, and the laminated thickness when wound on the roll 16 is reduced. In particular, in the case of the present embodiment, the weave 26 of the weft 22 and the warp 24 is displaced in the longitudinal direction of the weft 22 between the adjacent wefts 22, 22. It is shifted in order of 24. Therefore, as shown in FIGS. 2 (A) and 2 (B), the textures 26 are regularly arranged obliquely, and if the textures 26 overlap between the layers that overlap when wound on the roll 16. Therefore, the stacking thickness is further reduced because the position is shifted sequentially in the longitudinal direction of the wefts 22. Thus, the effect which can reduce lamination | stacking thickness is not restricted to the screen apparatus 12 and roll type screen door of a roll structure as shown in FIG. In other words, even if the screen door has a general structure that fixes the screen to the frame, the screen is wound and stored and transported at the time of manufacture. Is effective.

  As described above, in the screen 10, the warp yarns 24 and the weft yarns 22 are formed in different colors, and are colored by, for example, dyeing or dressing. Specifically, the warp yarn 24 and the weft yarn 22 have a color difference of a level at which the color difference can be discriminated with the naked eye, for example, the color difference ΔE is 3 or more, preferably about 4 to 15 in the (L * a * b color system). Have. In the screen 10 of the present embodiment, the color of the weft 22 whose exposure rate is increased on the one surface 10a on the outdoor side is set to a higher brightness than the color of the warp yarn 24 whose exposure rate is increased on the other surface 10b on the indoor side. For example, the warp yarn 24 is black, and the weft yarn 22 is any color such as gray, ride gray, cream, beige, green, brown or the like. As a result, one surface 10a is a bright color with a strong weft 22 color, and the other surface 10b is a dark dark color with a strong warp 24 color.

  Therefore, the screen 10 can be configured in different colors without coloring the one surface 10a and the other surface 10b with the coating agent as in the conventional case. For this reason, the screen 10 can ensure high product quality by preventing quality changes such as color change and dirt adhesion due to oil contained in the coating agent, and can also reduce costs by omitting the coloring process and not using the coating agent. It becomes. Moreover, as shown in FIG. 1, the screen device 12 using the screen 10 has not only the appearance quality improved on the one surface 10a having a bright color, but also can efficiently reflect sunlight from the outdoors and can also shield the room. The other surface 10b with improved blinding performance and a dark color has a structure in which the reflection of light to the indoor side is suppressed and the outdoor side can be easily seen, and the same effect can be expected when the screen 10 is used as a screen door.

  In the screen 10, the warp yarns 24 along the winding direction of the rolls 16 are made of yarns thinner than the weft yarns 22. For this reason, the stacking thickness when wound on the roll 16 is further reduced, and the winding force on the roll 16 is reduced to make the winding itself smooth. In addition, the screen 10 is composed of wefts 22 that are orthogonal to the feeding direction from the roll 16 and extend in the left-right direction to which no tension is applied from the roll 16, and are thicker than the warp 24. For this reason, the tension (rigidity) of the weft 22 itself can be sufficiently secured, and not only in the vertical direction along the warp 24 but also in the horizontal direction along the weft 22 as shown in FIG. it can.

  By the way, in the screen 10 of the present embodiment, the weft 22 is thicker than the warp 24, so that the gap C1 between the adjacent wefts 22 and 22 tends to be larger than the gap C2 between the adjacent warps 24 and 24. is there. Therefore, in order to prevent the wide gap C1 from deteriorating the shielding performance, the screen 10 may be configured by adding another weft (auxiliary weft 30) to the gap C1.

  3A is a schematic view of the screen 10 with the auxiliary weft 30 provided as viewed from one side 10a, and FIG. 3B shows the screen 10 with the auxiliary weft 30 provided from the other side 10b. It is the seen schematic diagram. FIG. 4 is a schematic diagram of a cross-sectional shape obtained by cutting the screen 10 shown in FIG. 3 in a direction perpendicular to the longitudinal direction of the warp 24. 3 and 4, the same reference numerals as the reference numerals of the screen 10 shown in FIGS. 1 and 2 indicate the same or similar configurations, and thus the same or similar functions and effects are provided. The detailed description is omitted as being performed, and the same applies to the screen 10 shown in FIG.

  As shown in FIGS. 3A and 3B, the auxiliary weft 30 extends in parallel with the weft 22, and is arranged so as to fill the gap C1 between the wefts 22,22. For example, the auxiliary weft 30 is disposed on the back side of the warp 24 when viewed from one side 10 a, and is woven with the warp 24 in a state where a plurality of (four in FIG. 3) warps 24 are straddled in the same manner as the weft 22. . That is, the wefts 32 of the auxiliary wefts 30 and the warp yarns 24 are arranged along the longitudinal direction of the auxiliary weft yarns 30, and the distance between them is four warp yarns 24. The interval between the textures 32 may be changed in the same manner as in the case of the texture 26 described above.

  In the case of this embodiment, the auxiliary weft 30 is the same as the warp 24, that is, the same shape and the same color as the warp 24. The auxiliary weft 30 may have a shape different from that of the warp 24 and a different color. However, since the auxiliary weft 30 is for closing the gap C1 and improving the shielding performance of the screen 10, black which is the same color as the warp 24 or an equivalent color which appears to be substantially the same color, for example, dark gray, is preferable. In addition, since the auxiliary weft 30 only fills the gap C1, it hardly affects the color on the one surface 10a.

  The auxiliary weft 30 closes the gap C1 and constructs a sandwich structure in which the warp yarn 24 is sandwiched between the auxiliary weft yarn 22 as shown in FIG. For this reason, by providing the auxiliary weft 30 in the screen 10, the effect that the warp yarn 24 and the weft yarn 22 can be more reliably prevented from being displaced before the fusion process is also obtained.

  As shown in FIG. 5, the screen 10 may have a configuration in which another weft (auxiliary weft 34) is added instead of the auxiliary weft 30 shown in FIG. 3 or in combination with the auxiliary weft 30. For example, the auxiliary weft 34 is arranged on the front side of the weft 22 (and the warp 24) when viewed from the other surface 10b, that is, the back side of the weft 22 (and the warp 24) when viewed from the one surface 10a. In addition, a plurality of (four in FIG. 5) warp yarns 24 are woven with warp yarns 24. For this reason, the wefts 36 of the auxiliary wefts 34 and the warp yarns 24 are arranged along the longitudinal direction of the auxiliary wefts 34, and the distance between them is four warp yarns 24. The interval between the textures 36 may be changed in the same manner as the textures 26 and 32 described above.

  In the case of the present embodiment, the auxiliary weft 34 is the same as the warp 24, that is, the same shape and color as the warp 24. The auxiliary weft 34 may have a shape different from that of the warp 24 and a different color, but black which is the same color as the warp 24 or an equivalent color which appears to be substantially the same color, for example, dark gray, is preferable. Accordingly, in the screen 10, the auxiliary weft 34 hides the exposure of the weft 22 on the other surface 10b and at the same time increases the exposure ratio of the same color as the warp 24, so that reflection of light to the indoor side on the other surface 10b is further suppressed. It is done. In the configuration example shown in FIG. 5, for example, the exposure ratio of the warp 24 and the auxiliary weft 34 is set to be about 70% with respect to the exposed area of the warp 24, the weft 22, and the auxiliary weft 34 on the other surface 10 b. . Of course, even in the case of the configuration using the auxiliary weft 34, a sandwich structure in which the warp 24 is sandwiched between the weft 22 is constructed, as in the case of the auxiliary weft 30 shown in FIG. It is also possible to obtain the effect of more reliably preventing the displacement of the position.

  When the screen 10 as described above is used as an awning as shown in FIG. 1, the ratio (opening ratio) of the area of the opening penetrating the one surface 10 a and the other surface 10 b to the unit area of the screen 10 is, for example, 5 It is set to about 15%. Therefore, when constructing this opening ratio of 5 to 15% with the warp yarns 24 having a diameter of 0.15 (mm) and the weft yarns 22 having a diameter of 0.30 (mm), the warp yarns 24 are about 50 to 90 per square inch. The weft 22 is preferably woven by providing about 20 to 70 wefts in one inch square. In a similar manner, when the screen 10 is used as a screen door, the opening ratio is set to, for example, about 60 to 80%, and the warp yarns 24 and the weft yarns 22 may be woven at a number and interval that can ensure the opening ratio.

  As shown in FIG. 6, a screen device 12A using the screen 10 as a roll screen door is supported by an opening frame 40 fixed to a building 14, and a casing that supports a shoji (not shown) so as to be opened and closed. 42. The screen 10 is a roll type screen door that shields the opening of the housing 42 so as to be opened and closed. The screen 10 can be drawn downward from the roll 16 attached to the upper collar 42a of the casing 42. A bottom bar 44 extending in the left-right width direction is attached to the lower end of the screen 10. The bottom bar 44 is slidable up and down in the opening portion of the housing 42 by being guided by vertical rails formed on the frame inner prospective surfaces of the left and right vertical rods 42b and 42c. Reference numeral 46 in FIG. 6 is a ball chain that is operated when the screen 10 is raised and lowered.

  As shown in FIG. 7, the bottom bar 44 includes a main body 48 and a holding unit 50. The main body 48 and the holding part 50 are extruded shapes made of a metal material such as aluminum, and are integrally formed. The main body 48 includes a groove portion 48b whose upper surface 48a is open along the longitudinal direction, and a hollow portion 48c formed below the groove portion 48b.

  The holding portion 50 is a portion that is provided inside the groove portion 48 b and holds the lower end portion of the screen 10. A cylindrical portion 52 that is sewn in a cylindrical shape is formed at the lower end portion of the screen 10. A screen door rope 54 is included inside the tubular portion 52. The screen door rope 54 is a resin member that functions as a core material that maintains the lower end of the screen 10 in a straight line, and has an outer diameter of, for example, about 3 mm. The holding | maintenance part 50 has the opening part 50a and the accommodating part 50b, and is a cross-sectional substantially C shape. The opening 50 a extends in the longitudinal direction of the bottom bar 44. The opening 50 a can be inserted through the screen 10 and has a width that is narrower than the outer diameter of the cylindrical portion 52. As for the accommodating part 50b, the cylindrical part 52 is inserted along a longitudinal direction. As a result, the cylindrical portion 52 is prevented from coming off in the housing portion 50b in a state where the sheet portion of the screen 10 is passed through the opening of the upper surface 48a and the opening portion 50a, thereby being connected to the bottom bar 44.

  Accordingly, the screen device 12A, for example, a conventional roll type screen door, joins an inner rail having a lower end of the screen fixed with a fastener tape to the bottom bar body, thereby connecting the screen and the bottom bar. Compared to the connected configuration, the lower end portion of the screen 10 is directly locked to the bottom bar 44, so the configuration is simplified and the number of parts can be reduced. Note that the connection structure between the bottom bar and the screen shown in FIG. 7 can also be used for a screen having a different weave from the screen 10 shown in FIGS. The bottom bar 44 having the structure shown in FIG. 7 may be applied to the screen 10 of the screen device 12 whose lower end is locked by the hook 20 as shown in FIG.

  The screen according to the present invention is a screen formed by weaving warp and weft, wherein the warp and the weft are formed in different colors, and on one side, one of the warp and the weft The exposure ratio is large, and the exposure ratio of the other one of the warp and the weft is larger than the exposure ratio on the one surface. According to such a configuration, since the exposure ratio of the warp and the weft in different colors is different on one side and the other side, for example, the color of the weft is strong on one side and the color of the warp is strong on the other side. It becomes a different color structure configured to the color that came out. For this reason, both surfaces can be configured in different colors without coloring one surface or the other surface using a coating agent. As a result, it is possible to prevent quality deterioration such as dirt due to oil contained in the coating agent to ensure high product quality, and it is also possible to reduce costs by omitting the coloring step and not using the coating agent.

  In the screen according to the present invention, the one yarn may have a higher brightness than the other yarn. Then, for example, when one side is arranged toward the outdoor side of the building and the other side is arranged toward the indoor side of the building, the color of the one side arranged on the outdoor side is brighter than the color of the other side arranged on the indoor side. Become a color. As a result, when the screen is used as a building shade or a screen door, not only the appearance quality is improved on the one side of the outdoor room where the color is bright, but also the sunlight from the outside can be reflected efficiently and the indoor shielding performance In addition, on the other side of the indoor side where the blinding performance is enhanced and the color is dark, the reflection of light to the indoor side is suppressed and the structure is easy to see through.

  In the screen according to the present invention, in the one surface, the one yarn is woven in a state of straddling a plurality of the other yarns, and in the other surface, the other yarn straddles a plurality of the one yarns. It is good also as a structure woven in. If it does so, the exposure ratio of the warp and the weft in which a color differs in one surface and the other surface in a weaving process can be varied, and manufacturing efficiency will improve.

  In the screen according to the present invention, the one yarn may be the weft, the other yarn may be the warp, and the diameter of the weft may be larger than the diameter of the warp. Then, since the weft having a large exposure ratio on one surface arranged on the outdoor side becomes thicker than the warp, one surface of a desired color in which the color of the weft is further emphasized can be formed.

  In the screen according to the present invention, auxiliary wefts having the same color as the warp yarns may be provided between the adjacent weft yarns or on the other surface side of the weft yarns. Then, the gap between the wefts and the other side of the wefts can be hidden by the auxiliary wefts, so that the shielding performance of the screen can be improved and the color of the other side can be made more uniform.

  The screen device according to the present invention includes the screen having the above-described configuration and a roll capable of winding and feeding the screen, and the roll winds and feeds the screen along the longitudinal direction of the warp. It is characterized by doing. According to such a configuration, a screen device in which one surface and the other surface are configured in different colors can be obtained. In addition, in this screen device, for example, when the warp is made thinner than the weft, not only the winding with the roll is smooth, but also the screen itself due to the tension of the thick weft when the screen is spread. A tension in the left-right width direction is applied to the plate, and loosening and bending are suppressed.

  The screen device according to the present invention includes a bottom bar attached to a lower end portion of the screen, and the bottom bar is provided inside the groove portion with a main body in which a groove portion having an open upper surface is formed, and the lower end portion of the screen The screen is sewn in a cylindrical shape, and has a cylindrical portion including a core material on the inside at the lower end, and the holding portion is wider than the cylindrical portion. It is good also as a structure which has an opening part through which the said screen is formed narrowly, and the said cylindrical part is accommodated. If it does so, the number of parts in the bottom bar and its peripheral part in a screen device can be reduced.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  For example, in the above embodiment, the weft 22 exposure ratio is increased on the one surface 10a arranged on the outdoor side of the building 14, and the warp yarn 24 exposure ratio is increased on the other surface 10b. The exposure ratio may be increased to increase the exposure ratio of the warp 24 on one side 10a, and the exposure ratio of the warp 24 may be larger than the exposure ratio of the weft 22 on the other side 10b. The warp yarn 24 may be set to a lighter color than the weft yarn 22.

  10 screen, 10a one side, 10b other side, 12, 12A screen device, 14 building, 14a window, 14b floor surface, 16 roll, 18 body box, 22 weft, 24 warp, 26, 32, 36 weave, 28 intersection, 30, 34 Auxiliary wefts, 44 Bottom bar, 48 Main body, 50 Holding part, 52 Cylindrical part, 54 Screen door rope

Claims (7)

A screen formed by weaving warps and wefts,
The warp and the weft are formed in different colors,
The exposure rate of one of the warp and the weft is large on one side, and the exposure rate of the other of the warp and the weft on the other side is larger than the exposure rate on the one side. Screen to play. The screen of claim 1,
The screen characterized in that the one thread has a higher brightness than the other thread. The screen according to claim 1 or 2,
In the one surface, the one yarn is woven in a state of straddling a plurality of the other yarns,
On the other surface, the screen is characterized in that the other yarn is woven in a state of straddling a plurality of the one yarn. The screen according to claim 3,
The one thread is the weft;
The other yarn is the warp,
The screen characterized in that the diameter of the weft is larger than the diameter of the warp. In the screen of any one of Claims 1-4,
An auxiliary weft having the same color as the warp is provided between adjacent wefts or on the other side of the weft. A screen according to any one of claims 1 to 5, and a roll capable of winding and feeding the screen.
The roll roll winds and feeds the screen along the longitudinal direction of the warp. The screen device according to claim 6,
Comprising a bottom bar attached to the lower end of the screen;
The bottom bar has a main body formed with a groove portion whose upper surface is open, and a holding portion that is provided inside the groove portion and holds a lower end portion of the screen,
The screen is sewn in a tubular shape, and has a tubular portion including a core material on the inner side at the lower end portion.
The said holding | maintenance part is formed more narrowly than the said cylindrical part, and has the opening part which the said screen lets pass, and the accommodating part in which the said cylindrical part is accommodated, The screen apparatus characterized by the above-mentioned.

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