JP2021155953A

JP2021155953A - Sash

Info

Publication number: JP2021155953A
Application number: JP2020055219A
Authority: JP
Inventors: 達郎堀内; Tatsuro Horiuchi
Original assignee: National Institute of Advanced Industrial Science and Technology AIST
Current assignee: National Institute of Advanced Industrial Science and Technology AIST
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-10-07

Abstract

To provide a sash capable of thermally shielding solar radiation heat so as to be visible outside without darkening an inside of a room at the time of solar radiation heat shielding even when a double glazing provided with a Low-E film having a solar radiation heat acquisition rate of 0.50 or more is provided, and capable of taking in solar radiation heat in the case of acquiring solar radiation.SOLUTION: A sash 1 has: a double glazing 21 provided with a Low-E film 211 having a solar radiation heat acquisition rate of 0.50 or more; a sash part 2 having a frame 22 provided on an outer peripheral edge of the double glazing 21; and a transparent base 3 provided with a Low-E film 31 having a solar radiation heat acquisition rate of 0.40 or less. The sash 1 is configured so that a state in which the transparent base material 3 is arranged on an outdoor side of the sash part 2 and a state in which the transparent base material 3 is not arranged on an outdoor side of the sash part 2 can be set.SELECTED DRAWING: Figure 1

Description

本発明は、障子に関する。 The present invention relates to a shoji screen.

従来、２枚のガラス板間に中空層を形成し、中空層のいずれか一方のガラス面に日射熱取得率０．５０以上のＬｏｗ−Ｅ（Low Emissivityの略）膜（低放射膜とも称される）をコーティングした複層ガラスと、複層ガラスの外周縁に設けられた框体とを有する障子が知られている。 Conventionally, a hollow layer is formed between two glass plates, and a Low-E (abbreviation of Low Emissivity) film (also called a low emissivity film) having a solar heat acquisition rate of 0.50 or more is formed on one of the glass surfaces of the hollow layer. A double glazing coated with (to be) and a frame provided on the outer peripheral edge of the double glazing are known.

暖房期において日射熱を室内に取り入れるために日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を備えた障子を用いる場合、冷房期において日射熱が室内に入射して室温が上昇し、冷房負荷が増加する。そのため、室内にブラインド、室外にすだれ等を配置して、冷房期の日射の入射を遮ることが推奨されている。 When a shoji with a Low-E film with a solar heat acquisition rate of 0.50 or more is used to take solar heat into the room during the heating period, the solar heat enters the room during the cooling period and the room temperature rises, resulting in a cooling load. Will increase. Therefore, it is recommended to place blinds in the room and blinds outside the room to block the insolation during the cooling period.

なお、特許文献１には、日射を遮熱するＬｏｗ−Ｅ膜を備えた複層ガラスを有する障子の室外側に日射調節手段を設けた構造が開示されている。また、特許文献２には、複層ガラスの中空層内にブラインドやロールスクリーン等の調光器を配設した障子が開示されている。また、特許文献３には、日射を遮蔽する積層膜を備えた透明基板が開示されている。 In addition, Patent Document 1 discloses a structure in which a solar radiation adjusting means is provided on the outdoor side of a shoji having a double glazing provided with a Low-E film that shields solar radiation. Further, Patent Document 2 discloses a shoji screen in which a dimmer such as a blind or a roll screen is arranged in a hollow layer of double glazing. Further, Patent Document 3 discloses a transparent substrate provided with a laminated film that shields solar radiation.

特開２００１−２５３７３４号公報Japanese Unexamined Patent Publication No. 2001-253734 特開２０１９−１９５８７号公報Japanese Unexamined Patent Publication No. 2019-19587 特許第６４５９３７４号公報Japanese Patent No. 6459374

日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を備えた障子を用いる場合において、ブラインドやすだれ、特許文献１、２の日射調節手段や調光器等を使用すると、日射熱の原因となる近赤外線が遮られるため遮熱には効果がある。しかしながら、これらの手段を用いると、近赤外線のみならず、可視光も遮られるので室内が暗くなり、外部も見難くなる。また、特許文献３の手段では、専ら暑熱地域において遮熱機能のみを発揮し、温帯地域における冬季のような寒冷地域において日射取得する機能がない。 When using a shoji with a Low-E film with a solar heat acquisition rate of 0.50 or more, using blinds, blinds, solar radiation adjusting means, dimmers, etc. in Patent Documents 1 and 2 may cause solar heat. Since near infrared rays are blocked, it is effective for heat shielding. However, when these means are used, not only near-infrared rays but also visible light is blocked, so that the room becomes dark and the outside becomes difficult to see. Further, the means of Patent Document 3 exerts only a heat shielding function exclusively in a hot region, and does not have a function of acquiring solar radiation in a cold region such as winter in a temperate region.

本発明は、かかる課題に鑑みてなされたものであり、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を備えた複層ガラスを有する場合であっても、日射遮熱時には室内が暗くならずに外部も見えるように日射熱を遮熱でき、かつ、日射取得時には日射熱を室内に取り込むことが可能な、障子を提供しようとするものである。 The present invention has been made in view of the above problems, and even if a double glazing having a Low-E film having a solar heat acquisition rate of 0.50 or more is provided, if the room becomes dark during solar heat shielding. It is intended to provide a disability that can shield the solar heat so that the outside can be seen without having to do so, and can take the solar heat into the room when the solar radiation is acquired.

本発明の一態様は、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を備える複層ガラス、および、上記複層ガラスの外周縁に設けられる框体を有する障子部と、
日射熱取得率０．４０以下のＬｏｗ−Ｅ膜を備える透明基材と、を有しており、
上記障子部の室外側に上記透明基材が配置される状態と、上記障子部の室外側に上記透明基材が配置されない状態とにすることが可能に構成されている、
障子にある。 One aspect of the present invention includes a double glazing having a Low-E film having a solar heat acquisition rate of 0.50 or more, and a shoji portion having a frame provided on the outer peripheral edge of the double glazing.
It has a transparent base material provided with a Low-E film having an solar heat acquisition rate of 0.40 or less.
It is possible to make it possible to arrange the transparent base material on the outdoor side of the shoji portion and the transparent base material on the outdoor side of the shoji portion.
It is in a shoji screen.

上記障子は、上記構成を有している。そのため、上記障子によれば、日射遮熱時には、障子部の室外側に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜を備える透明基材が配置される状態とすることができる。そのため、上記障子は、日射遮熱時に、透明基材における日射熱取得率０．４０以下のＬｏｗ−Ｅ膜によって日射を遮ることができ、冷房負荷を低減できる。この際、透明基材を用いているので可視光は透過し、これにより室内が明るくなり、外部も見ることができる。一方、上記障子によれば、日射取得時には、障子部の室外側に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜を備える透明基材が配置されない状態とすることができる。そのため、上記障子は、日射取得時に、透明基材における日射熱取得率０．４０以下のＬｏｗ−Ｅ膜によって日射が遮られることがなく、複層ガラスにおける日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を介して日射熱を室内に取り入れることができ、暖房負荷を低減できる。 The shoji has the above configuration. Therefore, according to the above-mentioned shoji, a transparent base material having a Low-E film having a solar heat acquisition rate of 0.40 or less can be arranged on the outdoor side of the shoji portion at the time of solar heat shielding. Therefore, the shoji can block the solar radiation by the Low-E film having a solar heat acquisition rate of 0.40 or less on the transparent base material at the time of solar heat shielding, and the cooling load can be reduced. At this time, since a transparent base material is used, visible light is transmitted, which brightens the room and allows the outside to be seen. On the other hand, according to the above-mentioned shoji, at the time of solar radiation acquisition, a transparent base material having a Low-E film having a solar heat acquisition rate of 0.40 or less can be not arranged on the outdoor side of the shoji portion. Therefore, at the time of solar radiation acquisition, the above-mentioned obstacle is not blocked by the Low-E film having a solar heat acquisition rate of 0.40 or less on the transparent base material, and the low with a solar heat acquisition rate of 0.50 or more on the double glazing. Solar heat can be taken into the room through the -E film, and the heating load can be reduced.

よって、上記障子によれば、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜を備えた複層ガラスを有する場合であっても、日射遮熱時には室内が暗くならずに外部も見えるように日射熱を遮熱でき、かつ、日射取得時には日射熱を室内に取り込むことができる。したがって、上記障子によれば、日射遮熱時および日射取得時の両方において、エネルギー負荷の低減を図ることができる。 Therefore, according to the above-mentioned shoji, even if a double glazing having a Low-E film having a solar heat acquisition rate of 0.50 or more is provided, the room is not darkened and the outside can be seen when the solar heat is shielded. The heat of solar radiation can be shielded, and the heat of solar radiation can be taken into the room when the solar radiation is acquired. Therefore, according to the above-mentioned shoji, it is possible to reduce the energy load both at the time of solar heat shielding and at the time of solar radiation acquisition.

図１は、実施形態１の障子の概略構成を示した断面図である。FIG. 1 is a cross-sectional view showing a schematic configuration of the shoji of the first embodiment. 図２は、実施形態２の障子の概略構成を示した断面図である。FIG. 2 is a cross-sectional view showing a schematic configuration of the shoji of the second embodiment. 図３は、実施形態３の障子の概略構成を示した断面図である。FIG. 3 is a cross-sectional view showing a schematic configuration of the shoji of the third embodiment.

（実施形態１）
実施形態１の障子について、図１を用いて説明する。なお、本実施形態では、鉛直方向を下側、鉛直方向と反対側を上側、鉛直方向に垂直な方向を水平方向、障子を室外側から見た右方向を右側、障子を室外側から見た左方向を左側とする。 (Embodiment 1)
The shoji of the first embodiment will be described with reference to FIG. In the present embodiment, the vertical direction is the lower side, the side opposite to the vertical direction is the upper side, the direction perpendicular to the vertical direction is the horizontal direction, the right direction when the obstacle is viewed from the outdoor side is the right side, and the obstacle is viewed from the outdoor side. The left direction is the left side.

図１に例示されるように、本実施形態の障子１は、複層ガラス２１および框体２２を有する障子部２と、透明基材３とを有している。 As illustrated in FIG. 1, the shoji 1 of the present embodiment has a shoji portion 2 having a double glazing 21 and a frame 22 and a transparent base material 3.

複層ガラス２１は、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１を備えている。このＬｏｗ−Ｅ膜２１１は、ＪＩＳＲ３１０６：２０１９に準拠して算出される複層ガラス２１の日射熱取得率が０．５０以上となるＬｏｗ−Ｅ（Low Emissivityの略）膜（低放射膜とも称される）を意味する。日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１の詳細構成については、後述する。 The double glazing 21 includes a Low-E film 211 having a solar heat acquisition rate of 0.50 or more. This Low-E film 211 is a Low-E (abbreviation of Low Emissivity) film (also referred to as a low emissivity film) in which the solar heat acquisition rate of the double glazing 21 calculated in accordance with JIS R3106: 2019 is 0.50 or more. Means). The detailed configuration of the Low-E film 211 having a solar heat acquisition rate of 0.50 or more will be described later.

本実施形態では、具体的には、複層ガラス２１は、複数枚（ここでは２枚）の板状のガラス２１２と、複数枚のガラス２１２を所定間隔を隔てて配置するためのスペーサ２１３と、複数枚のガラス２１２間に形成された中空層２１４とを有している。室内側に配置されたガラス２１２における中空層２１４側のガラス面には、上述した日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１が形成されている。なお、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１は、室外側に配置されたガラス２１２における中空層２１４側のガラス面に形成されていてもよい。また、スペーサ２１３の中空層２１４側とは反対側には、中空層２１４内を乾燥させる乾燥剤２１５が設けられている。 In the present embodiment, specifically, the double glazing 21 includes a plurality of (here, two) plate-shaped glass 212 and a spacer 213 for arranging the plurality of glass 212 at predetermined intervals. , It has a hollow layer 214 formed between a plurality of glass 212. The Low-E film 211 having a solar heat acquisition rate of 0.50 or more is formed on the glass surface of the hollow layer 214 side of the glass 212 arranged on the indoor side. The Low-E film 211 having a solar heat acquisition rate of 0.50 or more may be formed on the glass surface on the hollow layer 214 side of the glass 212 arranged on the outdoor side. Further, on the side of the spacer 213 opposite to the hollow layer 214 side, a desiccant 215 for drying the inside of the hollow layer 214 is provided.

框体２２は、複層ガラス２１の外周縁に設けられている。本実施形態では、具体的には、框体２２は、複層ガラス２１の上端縁に設けられる上框部２２１と、複層ガラス２１の下端縁に設けられる下框部２２２と、複層ガラス２１の左右端縁に設けられる一対の縦框部（不図示）とを有している。複層ガラス２１の外周端面と框体２２との間には、両者の隙間を通じて中空層２１４内へ侵入する水分等を防ぐため、封止材２１６が設けられている。 The frame 22 is provided on the outer peripheral edge of the double glazing 21. In the present embodiment, specifically, the stile 22 includes an upper stile portion 221 provided on the upper end edge of the double glazing 21, a lower stile portion 222 provided on the lower end edge of the double glazing 21, and a double glazing. It has a pair of vertical frame portions (not shown) provided on the left and right edge edges of the 21. A sealing material 216 is provided between the outer peripheral end surface of the double glazing 21 and the frame 22 in order to prevent moisture or the like from entering the hollow layer 214 through the gap between the two.

透明基材３は、日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を備えている。このＬｏｗ−Ｅ膜３１は、ＪＩＳＲ３１０６：２０１９に準拠して算出される透明基材３の日射熱取得率が０．４０以下となるＬｏｗ−Ｅ膜を意味する。日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１の詳細構成については、後述する。 The transparent base material 3 includes a Low-E film 31 having a solar heat acquisition rate of 0.40 or less. The Low-E film 31 means a Low-E film in which the solar heat acquisition rate of the transparent base material 3 calculated in accordance with JIS R3106: 2019 is 0.40 or less. The detailed configuration of the Low-E film 31 having a solar heat acquisition rate of 0.40 or less will be described later.

本実施形態では、日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１は、透明基材３中に配置されている。この構成によれば、日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を透明基材３の基材材料にて保護することができる。 In the present embodiment, the Low-E film 31 having a solar heat acquisition rate of 0.40 or less is arranged in the transparent substrate 3. According to this configuration, the Low-E film 31 having an solar heat acquisition rate of 0.40 or less can be protected by the base material of the transparent base material 3.

本実施形態では、透明基材３は、板状体である。透明基材３が板状体である場合、透明基材３は柔軟性に乏しく、丸めることができない。透明基材３は、具体的には、一対の板状基材部３２と、一対の板状基材部３２に挟持された日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１とを有している。このような透明基材３は、一方の板状基材部３２の表面に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を成膜し、当該形成面に他方の板状基材部３２を密着させることなどによって作製することができる。日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１の成膜法としては、例えば、スパッタリング法やコーティング法等を例示することができる。 In the present embodiment, the transparent base material 3 is a plate-like body. When the transparent base material 3 is a plate-like body, the transparent base material 3 has poor flexibility and cannot be rolled. Specifically, the transparent base material 3 includes a pair of plate-shaped base material portions 32 and a Low-E film 31 sandwiched between the pair of plate-shaped base material portions 32 and having an solar heat acquisition rate of 0.40 or less. doing. In such a transparent base material 3, a Low-E film 31 having a solar heat acquisition rate of 0.40 or less is formed on the surface of one plate-shaped base material portion 32, and the other plate-shaped base material portion is formed on the formed surface. It can be produced by bringing the 32 into close contact with each other. Examples of the method for forming the Low-E film 31 having a solar heat acquisition rate of 0.40 or less include a sputtering method and a coating method.

透明基材３を構成する基材材料としては、例えば、（メタ）アクリル樹脂、または、紫外線吸収剤を含むポリカーボネート樹脂などを用いることができる。（メタ）アクリル樹脂、紫外線吸収剤を含むポリカーボネート樹脂は、耐候性に優れる。そのため、この構成によれば、日射に晒される透明基材３の耐候性が向上し、透明基材３の耐久性に優れた障子１が得られる。なお、（メタ）アクリル樹脂は、アクリル樹脂のみならず、メタクリル樹脂をも含む意味である。 As the base material constituting the transparent base material 3, for example, a (meth) acrylic resin, a polycarbonate resin containing an ultraviolet absorber, or the like can be used. Polycarbonate resin containing (meth) acrylic resin and ultraviolet absorber has excellent weather resistance. Therefore, according to this configuration, the weather resistance of the transparent base material 3 exposed to sunlight is improved, and the shoji 1 having excellent durability of the transparent base material 3 can be obtained. The (meth) acrylic resin means that not only the acrylic resin but also the methacrylic resin is included.

ここで、障子１は、障子部２の室外側に透明基材３が配置される状態と、障子部２の室外側に透明基材３が配置されない状態とにすることが可能に構成されている。なお、図１は、障子１が、障子部２の室外側に透明基材３が配置された状態にされている場合を例示したものである。 Here, the shoji 1 is configured so that the transparent base material 3 is arranged on the outdoor side of the shoji portion 2 and the transparent base material 3 is not arranged on the outdoor side of the shoji portion 2. There is. Note that FIG. 1 illustrates a case where the shoji 1 is in a state where the transparent base material 3 is arranged on the outdoor side of the shoji portion 2.

本実施形態では、透明基材３は、框体２２に脱着可能に固定される構成とすることができる。この構成によれば、使用者等によって框体２２に透明基材３が取り付けられることにより、例えば、冷房機を使用する夏季に、複層ガラス２１の室外側に透明基材３が配置された状態とすることができる。一方、この構成によれば、使用者等によって框体２２から透明基材３が取り外されることにより、例えば、暖房機を使用する冬季に、複層ガラス２１の室外側に透明基材３が配置されない状態とすることができる。なお、透明基材３は、框体２２に直接または間接的に固定されることができる。 In the present embodiment, the transparent base material 3 can be detachably fixed to the frame 22. According to this configuration, the transparent base material 3 is attached to the frame 22 by the user or the like, so that the transparent base material 3 is arranged on the outdoor side of the double glazing 21, for example, in the summer when the air conditioner is used. Can be in a state. On the other hand, according to this configuration, the transparent base material 3 is removed from the frame 22 by the user or the like, so that the transparent base material 3 is arranged on the outdoor side of the double glazing 21, for example, in winter when a heater is used. It can be in a state where it is not done. The transparent base material 3 can be directly or indirectly fixed to the frame 22.

本実施形態では、図１に例示されるように、障子１は、框体２２に透明基材３を着脱可能に固定する固定部材４を有している。この構成によれば、固定部材４を介して、透明基材３を框体２２に着脱可能に固定することができる。 In the present embodiment, as illustrated in FIG. 1, the shoji 1 has a fixing member 4 for detachably fixing the transparent base material 3 to the frame 22. According to this configuration, the transparent base material 3 can be detachably fixed to the frame 22 via the fixing member 4.

より具体的には、固定部材４は、透明基材３の一端を保持する第１固定部４１と、透明基材３の一端とは反対側の他端を保持する第２固定部４２とを有している。そして、第１固定部４１および第２固定部４２が框体２２に着脱可能に構成されている。この構成によれば、第１固定部４１および第２固定部４２を介して、透明基材３を框体２２に着脱可能に固定することができる。 More specifically, the fixing member 4 has a first fixing portion 41 that holds one end of the transparent base material 3 and a second fixing portion 42 that holds the other end of the transparent base material 3 on the side opposite to one end. Have. Then, the first fixing portion 41 and the second fixing portion 42 are configured to be detachably attached to the frame 22. According to this configuration, the transparent base material 3 can be detachably fixed to the frame 22 via the first fixing portion 41 and the second fixing portion 42.

図１では、第１固定部４１が透明基材３の上端を保持しており、この第１固定部４１が框体２２の上框部２２１に螺子４３によって着脱可能に固定されるとともに、第２固定部４２が透明基材３の下端を保持しており、この第２固定部４２が框体２２の下框部２２２に螺子４３によって着脱可能に固定される例が示されている。図示はしないが、例えば、第１固定部４１が透明基材３の右端を保持しており、この第１固定部４１が框体２２の右側の縦框部に螺子４３によって着脱可能に固定されるとともに、第２固定部４２が透明基材３の左端を保持しており、この第２固定部４２が框体２２の左側の縦框部に螺子４３によって着脱可能に固定される構成とすることもできる。これらの場合、框体２２には螺子４３が螺合される螺子穴２２３が形成される。また、第１固定部４１および第２固定部４２には、螺子４３を挿通させる貫通孔４０が形成される。なお、図示はしないが、本実施形態では、固定部材４は枠状体から構成されており、この枠状体が第１固定部４１および第２固定部４２を含んでいる。つまり、枠状体の一部が第１固定部４１、第２固定部４２とされている。他にも、固定部材４は、別体からなる第１固定部４１および第２固定部４２から構成されていてもよい。 In FIG. 1, the first fixing portion 41 holds the upper end of the transparent base material 3, and the first fixing portion 41 is detachably fixed to the upper frame portion 221 of the frame body 22 by a screw 43, and the first fixing portion 41 is attached and detached. 2 An example is shown in which the fixing portion 42 holds the lower end of the transparent base material 3, and the second fixing portion 42 is detachably fixed to the lower frame portion 222 of the frame body 22 by a screw 43. Although not shown, for example, the first fixing portion 41 holds the right end of the transparent base material 3, and the first fixing portion 41 is detachably fixed to the vertical frame portion on the right side of the frame 22 by a screw 43. In addition, the second fixing portion 42 holds the left end of the transparent base material 3, and the second fixing portion 42 is detachably fixed to the vertical frame portion on the left side of the frame body 22 by a screw 43. You can also do it. In these cases, the frame 22 is formed with screw holes 223 into which the screws 43 are screwed. Further, through holes 40 through which the screws 43 are inserted are formed in the first fixing portion 41 and the second fixing portion 42. Although not shown, in the present embodiment, the fixing member 4 is composed of a frame-shaped body, and the frame-shaped body includes the first fixing portion 41 and the second fixing portion 42. That is, a part of the frame-shaped body is a first fixed portion 41 and a second fixed portion 42. In addition, the fixing member 4 may be composed of a first fixing portion 41 and a second fixing portion 42, which are separate bodies.

また、図１では、透明基材３の外周端面と固定部材４との間に、両者の隙間を通じて侵入する水分等を防ぐため、封止材４４が設けられている例が示されている。 Further, FIG. 1 shows an example in which a sealing material 44 is provided between the outer peripheral end surface of the transparent base material 3 and the fixing member 4 in order to prevent moisture or the like from entering through the gap between the two.

本実施形態では、框体２２と固定部材４との間にパッキン部材４５を設けることができる。この構成によれば、複層ガラス２１と透明基材３との間に形成された空間部１０に、框体２２と固定部材４との隙間から雨水や埃、砂塵等が侵入することを防止しやすくなる。そのため、この構成によれば、複層ガラス２１の室外側表面の結露や汚れ付着を抑制しやすくなる。なお、パッキン部材４５は、例えば、ゴム等の弾性材料より構成することができる。また、パッキン部材４５は、例えば、固定部材４における框体２２との接触面に形成された溝部４６等に嵌め込まれることができる。 In the present embodiment, the packing member 45 can be provided between the frame 22 and the fixing member 4. According to this configuration, rainwater, dust, dust, etc. are prevented from entering the space portion 10 formed between the double glazing 21 and the transparent base material 3 through the gap between the frame 22 and the fixing member 4. It will be easier to do. Therefore, according to this configuration, it becomes easy to suppress dew condensation and dirt adhesion on the outdoor surface of the double glazing 21. The packing member 45 can be made of an elastic material such as rubber. Further, the packing member 45 can be fitted, for example, into a groove 46 or the like formed on the contact surface of the fixing member 4 with the frame 22.

障子１において、複層ガラス２１が備える日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１は、具体的には、Ａｌドープ酸化亜鉛膜、および、Ｇａドープ酸化亜鉛膜からなる群より選択される少なくとも１種を含む構成とすることができる。Ａｌドープ酸化亜鉛、Ｇａドープ酸化亜鉛は、Ｓｎドープ酸化インジウムに比べ、構成元素の資源存在度が多いため資源枯渇し難く、安全性も高い。そのため、この構成によれば、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１の面積が比較的が大きくなる住宅やビル等の建築物の窓などに障子１を適用する場合に有用である。日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１は、具体的には、Ａｌドープ酸化亜鉛膜、または、Ｇａドープ酸化亜鉛膜とすることができる。 In the double glazing 1, the Low-E film 211 of the double glazing 21 having a solar heat acquisition rate of 0.50 or more is specifically selected from the group consisting of an Al-doped zinc oxide film and a Ga-doped zinc oxide film. It can be configured to include at least one type. Compared to Sn-doped indium oxide, Al-doped zinc oxide and Ga-doped zinc oxide have a large amount of constituent elements, so that resources are less likely to be depleted and safety is high. Therefore, according to this configuration, it is useful when the shoji 1 is applied to a window of a building such as a house or a building where the area of the Low-E film 211 having a solar heat acquisition rate of 0.50 or more is relatively large. be. Specifically, the Low-E film 211 having a solar heat acquisition rate of 0.50 or more can be an Al-doped zinc oxide film or a Ga-doped zinc oxide film.

日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１に用いられるＡｌドープ酸化亜鉛膜は、例えば、Ａｌ_２Ｏ_３を０質量％超２質量％以下含有することができる。同様に、日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１に用いられるＧａドープ酸化亜鉛膜は、例えば、Ｇａ_２Ｏ_３を０質量％超２質量％以下含有することができる。なお、例えば、Ａｌ_２Ｏ_３を２質量％含有するＡｌドープ酸化亜鉛は、酸化亜鉛９８質量％＋Ａｌ_２Ｏ_３２質量％で合計１００質量％であり、他の割合の場合、Ｇａドープ酸化亜鉛膜についても同様である。 The Al-doped zinc oxide film used for the Low-E film 211 having a solar heat acquisition rate of 0.50 or more can contain, for example, Al ₂ O ₃ in an amount of more than 0% by mass and 2% by mass or less. Similarly, the Ga-doped zinc oxide film used for the Low-E film 211 having a solar heat acquisition rate of 0.50 or more can contain, for example, Ga ₂ O ₃ in an amount of more than 0% by mass and not more than 2% by mass. For example, the Al-doped zinc oxide containing 2% by mass of _{Al 2} O ₃ _{is 98% by mass of zinc oxide + 2% by mass of Al 2} O ₃ for a total of 100% by mass, and in the case of other ratios, the Ga-doped zinc oxide is Ga-doped zinc oxide. The same applies to the membrane.

障子１において、透明基材３が備える日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１は、銀層または銀合金層を１層以上３層以下含む構成とすることができる。銀、銀合金は、可視光を透過させるが近赤外線を遮蔽する。銀層が多い方が日射熱の遮熱性能が高くなる。そのため、この構成によれば、銀層または銀合金層の積層数を１層以上３層以下の範囲で調整することにより、透明性と遮熱性能とのバランスをとることができる。なお、銀合金としては、例えば、耐水性向上等の観点から、Ａｕ、Ｐｄなどの元素を０．１質量％以上５質量％以下含有するＡｇなどを用いることができる。なお、例えば、Ｐｄを５質量％含有するＡｇは、Ａｇ９５質量％＋Ｐｄ５質量％で合計１００質量％であり、他の割合の場合も同様である。 In the shoji 1, the Low-E film 31 included in the transparent base material 3 and having an solar heat acquisition rate of 0.40 or less can be configured to include one or more and three or less silver layers or silver alloy layers. Silver and silver alloys transmit visible light but shield near infrared rays. The more silver layers there are, the higher the heat shielding performance of solar heat. Therefore, according to this configuration, the transparency and the heat shielding performance can be balanced by adjusting the number of layers of the silver layer or the silver alloy layer in the range of 1 layer or more and 3 layers or less. As the silver alloy, for example, Ag containing 0.1% by mass or more and 5% by mass or less of elements such as Au and Pd can be used from the viewpoint of improving water resistance and the like. For example, Ag containing 5% by mass of Pd is 95% by mass of Ag + 5% by mass of Pd, for a total of 100% by mass, and the same applies to other ratios.

障子１において、透明基材３が備える日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１は、酸化亜鉛膜、Ａｌドープ酸化亜鉛膜、および、Ｇａドープ酸化亜鉛膜からなる群より選択される少なくとも１種を含む構成とすることができる。酸化亜鉛、Ａｌドープ酸化亜鉛、Ｇａドープ酸化亜鉛は、Ｓｎドープ酸化インジウムに比べ、構成元素の資源存在度が多いため資源枯渇し難く、安全性も高い。そのため、この構成によれば、日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１の面積が比較的が大きくなる住宅やビル等の建築物の窓などに障子１を適用する場合に有用である。 In the obstacle 1, the Low-E film 31 included in the transparent substrate 3 and having a solar heat acquisition rate of 0.40 or less is selected from the group consisting of a zinc oxide film, an Al-doped zinc oxide film, and a Ga-doped zinc oxide film. It can be configured to include at least one type. Compared to Sn-doped indium oxide, zinc oxide, Al-doped zinc oxide, and Ga-doped zinc oxide have a large amount of constituent elements, so that resources are less likely to be depleted and safety is high. Therefore, according to this configuration, it is useful when the shoji 1 is applied to a window of a building such as a house or a building where the area of the Low-E film 31 having a solar heat acquisition rate of 0.40 or less is relatively large. be.

日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１は、具体的には、酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜、酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜、酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜／銀層または銀合金層／酸化亜鉛膜などの積層膜から構成することができる。なお、「Ａ／Ｂ」は、Ａの上にＢが積層されていることを意味する。また、本段落に記載の「酸化亜鉛膜」にいう酸化亜鉛は、Ａｌ、Ｇａ等の不純物をドープしない酸化亜鉛、Ａｌドープ酸化亜鉛、または、Ｇａドープ酸化亜鉛とすることができる。 Specifically, the Low-E film 31 having a solar heat gain rate of 0.40 or less is a zinc oxide film / silver layer or silver alloy layer / zinc oxide film, zinc oxide film / silver layer or silver alloy layer / zinc oxide film. / Silver layer or silver alloy layer / zinc oxide film, zinc oxide film / silver layer or silver alloy layer / zinc oxide film / silver layer or silver alloy layer / zinc oxide film / silver layer or silver alloy layer / zinc oxide film, etc. It can be composed of a laminated film. In addition, "A / B" means that B is laminated on A. Further, the zinc oxide referred to in the "zinc oxide film" described in this paragraph may be zinc oxide that is not doped with impurities such as Al and Ga, Al-doped zinc oxide, or Ga-doped zinc oxide.

上述した障子１は、冷房期等の日射遮熱時に、障子部２の室外側に透明基材３が配置された状態とし、暖房期等の日射取得時に、障子部２の室外側に透明基材３が配置されない状態として使用することができる。 The above-mentioned shoji 1 is in a state where the transparent base material 3 is arranged on the outdoor side of the shoji portion 2 during the solar heat shielding period such as in the cooling period, and the transparent group is provided on the outdoor side of the shoji portion 2 when the solar radiation is acquired during the heating period or the like. It can be used in a state where the material 3 is not arranged.

本実施形態の障子１は、具体的には、以下のようにして、障子部２の室外側に透明基材３が配置された状態とすることができる。 Specifically, the shoji 1 of the present embodiment can be in a state in which the transparent base material 3 is arranged on the outdoor side of the shoji portion 2 as follows.

先ず、固定部材４を取り付けるための螺子穴２２３が框体２２の室外側に形成された障子部２と、固定部材４にて保持された透明基材３と、螺子４３とを準備する。なお、透明基材３を取り付ける前に、透明基材３が配置されていなかった時期などに複層ガラス２１や框体２２の室外側の面についた砂塵や汚れなどを洗浄して取り除いておくことが好ましい。次いで、固定部材４の第１固定部４１および第２固定部４２に形成した貫通孔４０の位置と框体２２の螺子穴２２３の位置とを合わせる。次いで、第１固定部４１および第２固定部４２の貫通孔４０に螺子４３を挿通し、框体２２の螺子穴２２３に螺子４３を螺合する。これにより、固定部材４にて保持された透明基材３を框体２２に取り付けることができる。以上により、本実施形態の障子１は、障子部２の室外側に透明基材３が配置された状態とすることができる。 First, a shoji portion 2 having a screw hole 223 for attaching the fixing member 4 formed on the outdoor side of the frame 22, a transparent base material 3 held by the fixing member 4, and a screw 43 are prepared. Before attaching the transparent base material 3, dust and dirt on the outdoor surface of the double glazing 21 and the frame 22 are cleaned and removed at a time when the transparent base material 3 is not arranged. Is preferable. Next, the positions of the through holes 40 formed in the first fixing portion 41 and the second fixing portion 42 of the fixing member 4 and the positions of the screw holes 223 of the frame body 22 are aligned with each other. Next, the screw 43 is inserted into the through hole 40 of the first fixing portion 41 and the second fixing portion 42, and the screw 43 is screwed into the screw hole 223 of the frame body 22. As a result, the transparent base material 3 held by the fixing member 4 can be attached to the frame 22. As described above, the shoji 1 of the present embodiment can be in a state in which the transparent base material 3 is arranged on the outdoor side of the shoji portion 2.

また、本実施形態の障子１は、具体的には、以下のようにして、障子部２の室外側に透明基材３が配置されない状態とすることができる。 Further, specifically, the shoji 1 of the present embodiment can be in a state in which the transparent base material 3 is not arranged on the outdoor side of the shoji portion 2 as follows.

上述した螺子４３を緩め、框体２２の螺子穴２２３、第１固定部４１および第２固定部４２の貫通孔４０から螺子４３を抜く。これにより、固定部材４にて保持された透明基材３を框体２２から取り外すことができる。なお、取り外した透明基材３は、次の日射遮熱時期まで別の場所に収納しておけばよい。以上により、本実施形態の障子１は、障子部２の室外側に透明基材３が配置されてない状態とすることができる。 Loosen the screw 43 described above, and pull out the screw 43 from the screw hole 223 of the frame body 22, the first fixing portion 41, and the through hole 40 of the second fixing portion 42. As a result, the transparent base material 3 held by the fixing member 4 can be removed from the frame 22. The removed transparent base material 3 may be stored in another place until the next solar heat shielding period. As described above, the shoji 1 of the present embodiment can be in a state in which the transparent base material 3 is not arranged on the outdoor side of the shoji portion 2.

本実施形態の障子１によれば、日射遮熱時には、障子部２の室外側に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を備える透明基材３が配置される状態とすることができる。そのため、障子１は、日射遮熱時に、透明基材３における日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１によって日射を遮ることができ、冷房負荷を低減できる。この際、透明基材３を用いているので可視光は透過し、これにより室内が明るくなり、外部も見ることができる。一方、障子１によれば、日射取得時には、障子部２の室外側に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を備える透明基材３が配置されない状態とすることができる。そのため、障子１は、日射取得時に、透明基材３における日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１によって日射が遮られることがなく、複層ガラス２１における日射熱取得率０．５０以上のＬｏｗ−Ｅ膜２１１を介して日射熱を室内に取り入れることができ、暖房負荷を低減できる。 According to the shoji 1 of the present embodiment, the transparent base material 3 provided with the Low-E film 31 having a solar heat acquisition rate of 0.40 or less is arranged on the outdoor side of the shoji portion 2 at the time of solar heat shielding. Can be done. Therefore, the shoji 1 can block the solar radiation by the Low-E film 31 having a solar heat acquisition rate of 0.40 or less on the transparent base material 3 at the time of solar heat shielding, and the cooling load can be reduced. At this time, since the transparent base material 3 is used, visible light is transmitted, which makes the room brighter and allows the outside to be seen. On the other hand, according to the shoji 1, the transparent base material 3 provided with the Low-E film 31 having a solar heat acquisition rate of 0.40 or less can be not arranged on the outdoor side of the shoji portion 2 at the time of solar radiation acquisition. Therefore, the obstacle 1 is not blocked by the Low-E film 31 having a solar heat acquisition rate of 0.40 or less on the transparent base material 3 at the time of solar radiation acquisition, and the solar heat acquisition rate of the double glazing 21 is 0.50. Solar heat can be taken into the room through the Low-E film 211 as described above, and the heating load can be reduced.

（実施形態２）
実施形態２の障子１について、図２を用いて説明する。なお、実施形態２以降において用いられる符号のうち、既出の実施形態において用いた符号と同一のものは、特に示さない限り、既出の実施形態におけるものと同様の構成要素等を表す。 (Embodiment 2)
The shoji 1 of the second embodiment will be described with reference to FIG. In addition, among the codes used in the second and subsequent embodiments, the same codes as those used in the above-described embodiments represent the same components and the like as those in the above-mentioned embodiments, unless otherwise specified.

本実施形態では、透明基材３は、板状体またはシート状体とすることができる。透明基材３がシート状体である場合、透明基材３は柔軟性があり、丸めることが可能である。 In the present embodiment, the transparent base material 3 can be a plate-like body or a sheet-like body. When the transparent base material 3 is a sheet-like body, the transparent base material 3 is flexible and can be rolled.

透明基材３は、複層ガラス２１の表面に脱着可能に固定される。具体的には、図２に例示されるように、障子１は、複層ガラス２１の表面に透明基材３を着脱可能に固定する固定部材５を有している。この構成によれば、固定部材５を介して、透明基材３を複層ガラス２１の表面に脱着可能に固定することができる。 The transparent base material 3 is detachably fixed to the surface of the double glazing 21. Specifically, as illustrated in FIG. 2, the shoji 1 has a fixing member 5 for detachably fixing the transparent base material 3 to the surface of the double glazing 21. According to this configuration, the transparent base material 3 can be detachably fixed to the surface of the double glazing 21 via the fixing member 5.

より具体的には、固定部材５は、框体２２に設けられ、透明基材３における室外側の表面外縁を係止可能に構成された複数の係止部５１を有している。そして、複層ガラス２１における室外側の表面に積層された透明基材３が係止部５１により着脱可能に構成されている。この構成によれば、複数の係止部５１を介して、透明基材３を複層ガラス２１の表面に脱着可能に固定することができる。 More specifically, the fixing member 5 has a plurality of locking portions 51 provided on the frame 22 and configured to be able to lock the outer surface outer edge of the outdoor side of the transparent base material 3. The transparent base material 3 laminated on the outdoor surface of the double glazing 21 is detachably configured by the locking portion 51. According to this configuration, the transparent base material 3 can be detachably fixed to the surface of the double glazing 21 via the plurality of locking portions 51.

図１では、框体２２のうち、上框部２２１、下框部２２２、および、一対の縦框部（不図示）のそれぞれに複数の係止部５１が設けられている例が示されている。図示はしないが、例えば、框体２２のうち、上框部２２１および下框部２２２のそれぞれに複数の係止部５１が設けられ、縦框部には係止部が設けられていない構成とすることもできる。また、框体２２のうち、一対の縦框部のそれぞれに複数の係止部５１が設けられ、上框部２２１および下框部２２２には係止部５１が設けられていない構成とすることもできる。係止部５１は、透明基材３における室外側の表面外縁を押さえるように係止している。係止部５１は、例えば、框体２２の室外側の表面の内周縁に、框体２２の室外側の表面と平行に回動可能に設けられることができる。この場合、係止部５１は、基端部を支点として先端部を回動可能に設けられることができる。 FIG. 1 shows an example in which a plurality of locking portions 51 are provided in each of the upper stile portion 221 and the lower stile portion 222, and the pair of vertical stile portions (not shown) in the stile body 22. There is. Although not shown, for example, in the stile body 22, a plurality of locking portions 51 are provided in each of the upper stile portion 221 and the lower stile portion 222, and the vertical stile portion is not provided with a locking portion. You can also do it. Further, in the stile body 22, a plurality of locking portions 51 are provided in each of the pair of vertical stile portions, and the upper stile portion 221 and the lower stile portion 222 are not provided with the locking portions 51. You can also. The locking portion 51 is locked so as to press the outer surface outer edge of the outdoor side of the transparent base material 3. The locking portion 51 can be provided, for example, on the inner peripheral edge of the outdoor surface of the frame 22 so as to be rotatable in parallel with the outdoor surface of the frame 22. In this case, the locking portion 51 can be provided so that the tip portion can be rotatably provided with the base end portion as a fulcrum.

本実施形態の障子１によれば、日射遮熱時には、複層ガラス２１の表面に透明基材３を当接させた後、係止部５１の先端部が透明基材３の室外面上となるように係止部５１を回動させることにより、透明基材３を係止することができる。また、日射取得時には、係止部５１の先端部が框体２２側となるように係止部５１を回動させることにより、透明基材３を取り外すことができる。本実施形態の障子１は、実施形態１の障子１に比べ、障子１の厚みを薄くできる利点がある。 According to the shoji 1 of the present embodiment, at the time of solar heat shielding, after the transparent base material 3 is brought into contact with the surface of the double glazing 21, the tip of the locking portion 51 is on the outdoor surface of the transparent base material 3. The transparent base material 3 can be locked by rotating the locking portion 51 so as to be. Further, at the time of obtaining solar radiation, the transparent base material 3 can be removed by rotating the locking portion 51 so that the tip portion of the locking portion 51 is on the stile 22 side. The shoji 1 of the present embodiment has an advantage that the thickness of the shoji 1 can be made thinner than that of the shoji 1 of the first embodiment.

その他の構成および作用効果は、実施形態１と同様である。 Other configurations and effects are the same as in the first embodiment.

（実施形態３）
実施形態３の障子１について、図３を用いて説明する。 (Embodiment 3)
The shoji 1 of the third embodiment will be described with reference to FIG.

本実施形態では、透明基材３は、シート状体である。透明基材３は、具体的には、一対のシート状基材部３３と、一対のシート状基材部３３に挟持された日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１とを有している。このような透明基材３は、一方のシート状基材部３３の表面に日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１を成膜し、当該形成面に他方のシート状基材部３３を密着させることなどによって作製することができる。日射熱取得率０．４０以下のＬｏｗ−Ｅ膜３１の成膜法としては、例えば、スパッタリング法やコーティング法等を例示することができる。 In the present embodiment, the transparent base material 3 is a sheet-like body. Specifically, the transparent base material 3 includes a pair of sheet-shaped base material portions 33 and a Low-E film 31 sandwiched between the pair of sheet-shaped base material portions 33 and having an solar heat acquisition rate of 0.40 or less. doing. In such a transparent base material 3, a Low-E film 31 having a solar heat acquisition rate of 0.40 or less is formed on the surface of one sheet-shaped base material portion 33, and the other sheet-shaped base material portion is formed on the formed surface. It can be produced by bringing 33 into close contact with each other. Examples of the method for forming the Low-E film 31 having a solar heat acquisition rate of 0.40 or less include a sputtering method and a coating method.

固定部材６は、框体２２に設けられ、透明基材３を引き出し、巻き取り可能に構成された巻き取り部６１と、巻き取り部６１から引き出される透明基材３の端部を保持する端部保持部６２とを有している。そして、端部保持部６２が框体２２に着脱可能に構成されている。 The fixing member 6 is provided on the frame 22 and pulls out the transparent base material 3 to hold a winding portion 61 configured to be windable and an end portion of the transparent base material 3 pulled out from the winding portion 61. It has a unit holding unit 62. The end holding portion 62 is configured to be removable from the frame 22.

本実施形態の障子１によれば、框体２２に設けられた巻き取り部６１から透明基材３を引き出し、透明基材３の端部を保持する端部保持部６２を、巻き取り部６１が設けられた箇所と反対側の框体２２へ取り付けることにより、障子部２の室外側に透明基材３が配置された状態とすることができる。また、框体２２に取り付けられた端部保持部６２を框体２２から取り外し、透明基材３を巻き取り部６１に巻き取らせることにより、障子部２の室外側に透明基材３が配置されない状態とすることができる。 According to the shoji 1 of the present embodiment, the transparent base material 3 is pulled out from the take-up portion 61 provided on the frame 22, and the end holding portion 62 for holding the end portion of the transparent base material 3 is taken up by the take-up portion 61. By attaching to the stile 22 on the side opposite to the location where the sash is provided, the transparent base material 3 can be arranged on the outdoor side of the shoji sash 2. Further, the transparent base material 3 is arranged on the outdoor side of the shoji part 2 by removing the end holding portion 62 attached to the stile body 22 from the stile body 22 and winding the transparent base material 3 around the winding part 61. It can be in a state where it is not done.

したがって、本実施形態の障子１によれば、巻き取り部６１へ巻き取った透明基材３を、別の場所に移動させて収納する必要がなくなり、そのまま框体２２へ取り付けたまま収納することができる。そのため、本実施形態の障子１は、場所をとらずに透明基材３を収納することができる。また、本実施形態の障子１によれば、透明基材３がシート状体より構成されるため、実施形態１の障子１に比べ、障子１の厚みを薄くできる利点がある。 Therefore, according to the shoji 1 of the present embodiment, it is not necessary to move the transparent base material 3 wound around the winding portion 61 to another place and store it, and store the transparent base material 3 while being attached to the frame 22 as it is. Can be done. Therefore, the shoji 1 of the present embodiment can store the transparent base material 3 without taking up space. Further, according to the shoji 1 of the present embodiment, since the transparent base material 3 is composed of a sheet-like body, there is an advantage that the thickness of the shoji 1 can be made thinner than that of the shoji 1 of the first embodiment.

なお、本実施形態では、具体的には、巻き取り部６１が上框部２２１、端部保持部６２が下框部２２２に設けられている例が示されている。図示はしないが、他にも、巻き取り部６１は下框部２２２、端部保持部６２は上框部２２１に設けられていてもよい。また、巻き取り部６１は一方の縦框部、端部保持部６２は他方の縦框部に設けられていてもよい。また、端部保持部６２の框体２２への取り付け方法は、特に限定されず、例えば、端部保持部６２を框体２２に螺子等により着脱可能に固定する方法、端部保持部６２を框体２２へ引っ掛けるように固定する方法などを例示することができる。また、巻き取り部６１は、フード部（不図示）内に設けられていてもよい。この場合には、フード部によって透明基材３が覆われるため、巻き取り部６１への収納時における透明基材３の劣化を抑制することができる。 In this embodiment, specifically, an example is shown in which the winding portion 61 is provided on the upper stile portion 221 and the end holding portion 62 is provided on the lower stile portion 222. Although not shown, the winding portion 61 may be provided on the lower stile portion 222, and the end holding portion 62 may be provided on the upper stile portion 221. Further, the winding portion 61 may be provided on one vertical frame portion, and the end holding portion 62 may be provided on the other vertical frame portion. The method of attaching the end holding portion 62 to the frame 22 is not particularly limited. For example, a method of detachably fixing the end holding portion 62 to the frame 22 with a screw or the like, or an end holding portion 62. An example can be exemplified of a method of fixing the frame 22 so as to be hooked on the frame 22. Further, the winding portion 61 may be provided in a hood portion (not shown). In this case, since the transparent base material 3 is covered with the hood portion, deterioration of the transparent base material 3 during storage in the winding portion 61 can be suppressed.

本発明は、上記各実施形態に限定されるものではなく、その要旨を逸脱しない範囲において種々の変更が可能である。また、各実施形態に示される各構成は、それぞれ任意に組み合わせることができる。 The present invention is not limited to each of the above embodiments, and various modifications can be made without departing from the gist thereof. In addition, each configuration shown in each embodiment can be arbitrarily combined.

１障子
２障子部
２１複層ガラス
２１１日射熱取得率０．５０以上のＬｏｗ−Ｅ膜
２２框体
３透明基材
３１日射熱取得率０．４０以下のＬｏｗ−Ｅ膜 1 Shoji 2 Shoji 21 Double glazing 211 Low-E film with solar heat acquisition rate of 0.50 or more 22 Frame 3 Transparent base material 31 Low-E film with solar heat acquisition rate of 0.40 or less

Claims

A double glazing having a Low-E film having a solar heat acquisition rate of 0.50 or more, and a shoji portion having a stile provided on the outer peripheral edge of the double glazing.
It has a transparent base material provided with a Low-E film having an solar heat acquisition rate of 0.40 or less.
It is possible to make it possible to arrange the transparent base material on the outdoor side of the shoji portion and the transparent base material on the outdoor side of the shoji portion.
Shoji.

The shoji according to claim 1, wherein the Low-E film having a solar heat acquisition rate of 0.40 or less is arranged in the transparent substrate.

The shoji according to claim 1 or 2, further comprising a fixing member for detachably fixing the transparent base material to the surface of the frame or the double glazing.

The transparent base material is a plate-like body and is
The fixing member has a first fixing portion for holding one end of the transparent base material and a second fixing portion for holding the other end on the side opposite to one end of the transparent base material.
The shoji according to claim 3, wherein the first fixing portion and the second fixing portion are detachably configured to be attached to and detached from the frame.

The shoji according to claim 3 or 4, wherein a packing member is provided between the frame and the fixing member.

The fixing member has a plurality of locking portions provided on the frame body and configured to be able to lock the outer surface outer edge of the outdoor side of the transparent base material.
The shoji according to claim 3, wherein the transparent base material laminated on the outdoor surface of the double glazing is detachably configured by the locking portion.

The transparent base material is a sheet-like body and is
The fixing member is provided on the frame, and the transparent base material is pulled out and the winding portion which is configured to be rewound and the end portion which holds the end portion of the transparent base material pulled out from the winding portion are held. It has a holding part and
The shoji according to claim 1 or 2, wherein the end holding portion is detachably attached to the frame.

The Low-E film having a solar heat gain rate of 0.50 or more includes at least one selected from the group consisting of an Al-doped zinc oxide film and a Ga-doped zinc oxide film, according to claims 1 to 7. The obstacle described in any one item.

The shoji according to any one of claims 1 to 8, wherein the Low-E film having a solar heat gain rate of 0.40 or less contains one or more and three or less silver layers or silver alloy layers.

The Low-E film having a solar heat gain rate of 0.40 or less includes at least one selected from the group consisting of a zinc oxide film, an Al-doped zinc oxide film, and a Ga-doped zinc oxide film, according to claim 1. The obstacle according to any one of claim 9.

The shoji according to any one of claims 1 to 10, wherein the base material constituting the transparent base material is a (meth) acrylic resin or a polycarbonate resin containing an ultraviolet absorber.