JP3695749B2

JP3695749B2 - Heat shield for protecting thermal insulation of houses

Info

Publication number: JP3695749B2
Application number: JP2002165551A
Authority: JP
Inventors: 節也松本
Original assignee: 松本建工株式会社
Priority date: 2002-06-06
Filing date: 2002-06-06
Publication date: 2005-09-14
Anticipated expiration: 2022-06-06
Also published as: JP2004011240A

Description

【０００１】
【発明の属する技術分野】
本発明は、住宅の断熱構造に用いる断熱材の表面を被覆保護する遮熱材であって、断熱材表面に負荷される熱線を遮断阻止し、断熱材の加熱、蓄熱を軽減するものであり、住宅建築の技術分野に属するものである。
【０００２】
【従来の技術】
一般的木造住宅建築物では、例えば屋根裏にあっては、小屋裏換気口を設けて小屋裏内部の温度を出来るだけ外気に同化させるように施工しているが、小屋裏内部の温度は、建築物の建築地域、日照条件、季節によって高温になることがある。
このような、小屋裏内部空間の熱による居室内への悪影響を軽減するため、一般的には、居宅の天井裏面（天井仕上材上面）に、繊維質断熱材を吹込み施工したり、硬質ウレタンフォーム断熱材を敷設したりしている。
しかし、断熱材自体は、伝導熱の伝達を抑制するが、苛酷な加熱条件下にさらされるため、大熱量を蓄熱する結果、夜間等外気温が低下しても、蓄熱体として蓄熱量を室内側へも放散し続け、例えば、居室内では、冷房エネルギー負荷が大となる。
【０００３】
本出願人は、上述の問題を解決するために、特願２０００−２７１３３５号（特許第３２５１０００号）として画期的な住宅の断熱構造を提案した。
図１１は特許第３２５１０００号発明であり、該発明は、断熱材上を、輻射熱反射層を備えた遮熱材で被覆保護するものであり、住宅の断熱材に外部から負荷される熱のうち、輻射熱加熱を阻止し、断熱材の加熱及び蓄熱を軽減する極めて有効な断熱方式ではあるが、遮熱材は保形性がなくて倒伏するため、遮熱材の端部を周囲の柱や梁、或いは壁板等に釘打ちするか、テープ止着するかして固定する必要があり、例えば、図１１（Ｂ）の如く、天井裏の断熱材を遮熱材で被覆保護する際には、束に当接する個所では、遮熱材を切欠嵌合し、遮熱材の上面シートの切欠個所の一部を取付片Ｐとして束に固定し、遮熱材を機能発揮出来る起立状態に保持していた。
【０００４】
【発明が解決しようとする課題】
図１１の断熱構造の発明（特許第３２５１０００号）は、上述のとおり、断熱材に対する加熱、蓄熱を軽減する画期的機能を備えた有効なものではあるが、住宅建築物の外壁、天井裏等に適用する際には、遮熱材の取付けが煩雑であり、遮熱材を均斉な立体形態に保持するのが困難であった。
本発明は、変形し易い遮熱材を新規な構造とし、遮熱材自体に自立性を付与し、遮熱材の断熱材への被覆保護を簡便にするものである。
【０００５】
【課題を解決するための手段、及び作用】
本願の断熱材保護用遮熱材の第１の発明は、例えば図１に示す如く、シート材から成るフレーム１０（図２）と、フレーム１０内の空気層空間Ｓに挿入保持してフレーム１０の立体形態を保持したシート材から成る自立片１５とを含み、フレーム１０は、少なくとも上面シート１１が表面に輻射熱反射層Ｒｅを備えた、少なくとも上面シート１１と透湿性の下面シート１２を含む複数シートを、シート材から成る倒伏自在の起立片１３，１４で連結して長手方向に空気流通可能な空気層空間Ｓを形成したものであり、自立片１５は、表面に輻射熱反射層Ｒｅを備え、且つ、上面シート１１及び下面シート１２を当接支持する頂部１５ｔと底部１５ｂ及び中間の傾斜部１５Ｓを備え、幅方向両端部１５Ｅ間で、長手方向に並行する形態に屈曲立体化したものであり、空気層空間Ｓの上面を規定するシート１１、及び自立片１５に、遮熱材１の内部空気流を遮熱材１の上方へ空気連通可能とするための空気連通用の空気孔Ｏを散在したものである。
【０００６】
尚、「シート材」は、折曲容易、且つ面状形態の保持出来る紙、不織布シート等であって、典型的には０．１〜０．３mm厚のクラフト紙である。
また、「輻射熱反射層Ｒｅ」は、熱反射性の金属箔や金属蒸着膜であり、典型的には市場入手容易な６×１０^−３〜６×１０^−２mm厚のアルミニウム箔である。
そして、輻射熱反射層Ｒｅは、上面シート１１表面、及び自立片１５表面への付与が必須であるが、必要に応じて下面シート１２にも付与すれば、例え、上面シート１１及び自立片１５の輻射熱反射層Ｒｅが埃等で汚染されて熱線反射機能低下を生じても、下方の輻射熱反射層Ｒｅが補償することとなり、遮熱材１の熱線透過防止機能がいっそう向上する。
【０００７】
また、自立片１５の「屈曲立体化」は、図２の如く折り目によって屈曲立体化させたものや、図６（Ｂ）の如く曲げによって屈曲立体化させたもの等、シート面が上下に突出立体化したものを含む広い意味である。
また、フレーム１０の「複数シート」は、上面シート１１と下面シート１２の場合も、中間シート（図示せず）を有する場合をも含むものであり、上面シート１１と下面シート１２の２層であれば、中間に一層の空気層空間Ｓが、シートが３層の場合には、中間シートの上と下とに２層の空気層空間Ｓが形成出来る。
また、自立片１５は、空気層空間Ｓ内に挿入して上下シート１１，１２間を頂部１５ｔ及び底部１５ｂで支持保形すると共に、空間Ｓ内の空気流動を保証すれば良いので、フレーム１０と同長である必要はない。
【０００８】
従って、本発明遮熱材１は、自立片１５によって立体形態が保持されているため、住宅の各所に適用する断熱材２上への付設被覆が容易であり、本発明遮熱材１で住宅の断熱材２上を被覆すれば、遮熱材１の上面シート１１の輻射熱反射層Ｒｅが熱線を反射して断熱材への輻射熱加熱を阻止し、空気層空間Ｓ内に挿入した自立片１５によって保証された長手方向の空気流動が遮熱材１内の高温化も阻止するため、遮熱材１の外方から断熱材２への熱伝達のうち、輻射と対流には遮熱材１が対処することとなり、断熱材２への加熱、蓄熱は軽減出来る。
【０００９】
また、フレーム１０の構成材（上面シート、下面シート、起立片）も、自立片１５構成材も、折曲容易なシート材であるため、アルミニウム箔の接着や、折曲や、相互の接着等の施工が容易である。
しかも、自立片１５は、フレーム１０内（空気層空間内）への挿入物であり、フレーム１０自体は起立片１３，１４の倒伏によって積層形態での保管、搬送が可能であるため、必要時点で遮熱材として組立て可能であり、遮熱材としての製作、管理が容易である。
【００１０】
そして、自立片１５の頂部１５ｔ及び底部１５ｂがフレーム１０の上面シート１１と下面シート１２とを当接支承して自立片１５の断面立体形態の上部空間Ｓｔ及び下部空間Ｓｂを形成するため、フレーム１０は空気流動保証の下に、全面に亘って立体形態の保持が可能となり、遮熱材１の断熱層２表面への被覆及び保持が容易となる。
【００１１】
しかも、図５に示す如く、フレーム１０の空気層空間Ｓの上面を規定するシート１１、及び自立片１５の全面に空気孔Ｏを散在させたため、遮熱材１の内部の空気は、全て遮熱材の上方へ空気連通可能となり、空気層空間Ｓ内、即ち自立片の上部空間Ｓｔ及び下部空間Ｓｂ内、での長手方向空気流動と相俟って、遮熱材１内部の熱及び湿気の平準化排出が可能となり、遮熱材１の耐候性が向上する。
【００１４】
また、本願の断熱材保護用遮熱材の第２の発明は、シート材から成るフレーム１０と、フレーム１０内の空気層空間Ｓに挿入保持してフレーム１０の立体形態を保持したシート材から成る自立片１５とを含み、フレーム１０は、少なくとも上面シート１１が表面に輻射熱反射層Ｒｅを備えた、少なくとも上面シート１１と透湿性の下面シート１２を含む複数シートで、且つ、下面シート１２が、長手方向両端に、遮熱材１の両端で空気層空間Ｓの空気の導通を保証する間隔Ｇ１０を形成するための、突出した延長部Ｌ２０を備え、シート材から成る倒伏自在の起立片１３，１４で連結して長手方向に空気流通可能な空気層空間Ｓを形成したものであり、自立片１５は、表面に輻射熱反射層Ｒｅを備え、且つ、上面シート１１及び下面シート１２を当接支持する頂部１５ｔと底部１５ｂ及び中間の傾斜部１５Ｓを備え、幅方向両端部１５Ｅ間で、長手方向に並行する形態に屈曲立体化したものである。
【００１５】
該第２の発明は、特に、図８（Ａ）に示す如く、フレーム１０の下面シート１２が両端に、遮熱材１の両端で空気層空間Ｓの空気の導通を保証する間隔Ｇを形成するための、上面シート１１より突出した延長部Ｌ２０を備えた点を必須構成要件の一部とするものである。
従って、第１の発明同様に、断熱材２への加熱、蓄熱が軽減出来ると共に、遮熱材１の下面シート１２にボード状断熱材２を一体化して用いれば、例えば、図８（Ｂ）の如く、ボード状断熱材２の両端を壁や小屋梁等の仕切材に当接嵌合配置しても、仕切材の対向立面Ｖｆと遮熱材１の端部との間には、延長部Ｌ２０によって間隔Ｇ１０が形成出来、遮熱材１内の空気層空間Ｓ、即ち自立片の上部空間Ｓｔ及び下部空間Ｓｂ、の空気の導通が保証され、遮熱材１内部の加熱空気の排出、及び湿気の排出機能は発揮出来る。
尚、この場合、下面シート１２にも輻射熱反射層Ｒｅを施しておけば、断熱材２全面に対する輻射熱加熱が抑制出来るが、間隔Ｇ１０、即ち延長部Ｌ２０が断熱材全長２Ｌに対して、熱線加熱阻止効果上、無視出来る程度に小さければ、延長部Ｌ２０上の輻射熱反射層Ｒｅは省略可能である。
【００１６】
また、シート材から成るフレーム１０が、起立片１３，１４によって倒伏、起立自在であって、シート材から成る自立片１５が、頂部１５ｔと底部１５ｂの間に傾斜部１５ｓを備え、頂部１５ｔ及び底部１５ｂで折畳み及び／又は延長可能であるのが好ましい。
尚、自立片１５の「延長」の意味は、突出形態の頂部１５ｔや底部１５ｂが平坦になる延長状態も、頂部１５ｔや底部１５ｂが平坦化変形して自立片１５がシート形態として取扱える程度の延長状態をも含む広い意味である。
この場合は、遮熱材１の組立製作前には、フレーム１０と自立片１５とは、別々に嵩の低い積層形態として保管、搬送出来るため、遮熱材１の製作、施工管理が容易となる。
【００１７】
そして、自立片が幅方向の拡開応力を発現すれば、フレーム１０の空間Ｓ内へ挿入した際に両側端部１５Ｅが起立片に当接安定するため、自立片１５は延長形態で保管するのが有効である。
しかも、遮熱材１として使用中は、自立片１５は、頂部１５ｔ及び底部１５ｂで上面シート１１と下面シート１２とを支承保持するため、自立片１５の傾斜部１５ｓが支柱兼ブレースの機能を奏し、クラフト紙の如き軽くて薄いシート材で構成したにもかかわらず、強固、且つ、充分な立体形態保持力を発揮する。
【００１８】
また、本発明の遮熱材１にあっては、下面シート１２は透湿性を有する下面シート１２としては透湿性材料を選択しても、また非透湿性材料にニードリング処理によって微細孔ｈ（図４）を散在させても良い。
この場合、吸湿性の断熱材２を被覆保護しても、断熱材２の湿気が下面シート１２から空気層空間Ｓ、即ち、自立片１５の下部空間Ｓｂへ放出可能となり、断熱材２の吸湿による断熱機能低下も抑制出来る。
【００１９】
また、本発明の遮熱材１は、自立片１５が表面に輻射熱反射層Ｒｅを備えている。
この場合、自立片用のシート材（典型的にはクラフト紙）にアルミ箔を貼着した後、シート材を屈曲立体化すれば良い。
自立片１５の表面が輻射熱反射層Ｒｅを有しておれば、図１の如く、上面シート１１の下側に長手方向に貫通存在する上部空間Ｓｔ内へ上面シート１１から透過入射した熱線も自立片表面で反射して下方への透過を阻止するため、遮熱材１の輻射熱阻止機能は増大し、自立片１５表面での反射熱線による加熱空気も上部空間Ｓｔによって好適に排除し、遮熱材１内の過剰加熱が阻止出来る。
【００２０】
また、フレーム１０は、上面シート幅１１Ｗが他のシート幅１２Ｗより大であるのが好ましい。
この場合、遮熱材１は、断熱材２への加熱、蓄熱を軽減する作用を奏すると共に、遮熱材１の相互並列配置は、図１０（Ａ）の如く、上面シート側縁をオーバーラップ形態として下面シート１２相互を衝接させる配置も、図１０（Ｃ）の如く、上面シート側縁相互を衝接して下面シート側縁相互が間隔を有する形態の配置も可能であるため、例えば断熱材２間に木材が存在する場合等、断熱材２間に間隔が存在する場合にも、介在木材を含む断熱材２層の表面の完全被覆保護も可能となり、遮熱材１は被覆保護形態の自由度が高まる。
また、フレーム１０の全シート（上面シート、下面シート）と起立片１３，１４、及び自立片１５が透湿性を有するのが好ましい。
この場合、アルミ箔を貼着したシートでも、ニードリングによるピンホール（微細孔）ｈの散在付与により透湿性と出来るので、フレーム１０及び自立片１５の製作前のシート状態で透湿性付与をすれば良い。
遮熱材１の全構成部材が透湿性であれば、吸湿性断熱材に適用しても、断熱材の吸湿による断熱機能低下の阻止が可能であると共に、遮熱材内部での結露も防止出来、輻射熱反射層Ｒｅの結露汚染、シート材の吸湿腐蝕等の遮熱材の劣化が阻止出来る。
【００２１】
また、図１に示す如く、自立片端部１５Ｅを、フレーム１０の空気層空間Ｓの隅端部ＳＥに当接するのが好ましい。
自立片１５は、屈曲立体化したために、シート材の幅方向は狭まったものであり、両端１５Ｅを支持して幅１５Ｗを固定した状態では、自立片１５は、上面からの押圧によって、頂部１５ｔの下方への変位、即ち幅１５Ｗを拡開する傾向を生ずるが、両端１５Ｅが隅端部ＳＥに当接して幅方向拡開が阻止されるため、頂部１５ｔから両側へ下降する傾斜部１５ｓがブレース機能を備えた支柱として働き、大きな抗力を発揮する。
従って、この場合、特に、空間Ｓの高さＳＨと底部１５ｂ間距離ＰＬとを略同一（ＰＬ／ＳＨ＝０．８〜１）、即ち、自立片各頂部１５ｔの頂角θを４０〜５５°、に選定すれば、フレーム１０の立体形態保持力は最大となり、慣用のクラフト紙製の自立片であっても、強固、且つ充分な立体形態保持が可能となる。
【００２２】
また、本発明遮熱材１にあっては、自立片１５がフレーム１０の空気層空間Ｓ内で幅方向に拡開しなければ自立片１５は傾斜部１５ｓがブレース兼支柱機能を発揮するため、自立片１５のフレーム１０への固定は必須ではないが、自立片１５をフレーム空間Ｓ内に止着するのが好ましい。
この場合は、自立片１５のフレーム１０内からの抜脱落下が阻止出来るため、遮熱材１の配設作業が容易となると共に、外壁断熱材に対する垂直形態配置や、屋根断熱材に対する傾斜配置等、どのような形態でも使用可能となる。
【００２３】
また、自立片１５は、端部１５Ｅをフレーム１０の空気層空間Ｓの隅端部ＳＥと止着するのが好ましい。
この場合、自立片１５をフレーム１０の長手方向一端から空気層空間Ｓ内に挿入した後、図１（Ｂ）の如く、自立片１５の一端、又は両端で、端部１５Ｅを空間Ｓの隅端部ＳＥに当接して接着剤Ａｄを点付与すれば良く、止着作業が簡単である。
そして、自立片１５の幅方向変位が固定されるため、自立片１５は、傾斜部１５ｓがブレース（斜材）兼支柱として機能し、フレーム１０の立体形態を強固に、且つ充分に保持する。
【００２４】
また、遮熱材は、自立片１５の各底部１５ｂ間寸法ＰＬが空気層空間Ｓの高さＳＨと略等しく設定するのが好ましい。
この場合、力学的には、空気層空間高さＳＨと各底部１５ｂ間距離ＰＬとが略同等であれば、自立片１５は、空気層空間Ｓ内の空気流動に対する干渉を抑えた状態で頂部１５ｔからの各傾斜部１５ｓは、支柱機能とブレース機能がバランスする。
そして、自立片１５の各頂部１５ｔ及び底部１５ｂを上面シート１１及び下面シート１２と固定すれば、傾斜部１５ｓが最強力なブレース兼支柱となるため、必要に応じて、且つ、適宜位置で自立片１５の頂部１５ｔと上面シート１１とを固定するのが好ましい。
【００２５】
また、自立片１５の各頂部１５ｔ及び底部１５ｂが折曲折目線であり、各傾斜部１５ｓが平面であるのが好ましい。
この場合、自立片１５は、シート材を所定寸法で折目線により屈曲するため、製作容易であって、積層形態としても、拡開シート形態としても取扱えるため、保管、搬送にも有利である。
しかも、力学的には、傾斜部１５ｓが平面であれば座屈抗力が大となり、最大の支柱機能及びブレース機能を奏する自立片１５が得られる。
【００２６】
また、本発明の遮熱材１は、フレーム１０の下面シート１２がボード状断熱材２を一体的に備えているのが好ましい。
フレーム１０の下面シート１２とボード状断熱材との一体化は、フレーム１０を起立片１３，１４の倒伏による積層形態で型枠上に型組みして、硬質ウレタンフォーム等の発泡断熱材の充填発泡によりフレーム１０の下面シート１２と一体化しても、成形発泡断熱板やインシュレーションボード等の木質断熱板をフレーム１０の下面シート１２と接着しても良い。
【００２７】
この場合、ボード状断熱材２と立体形態保持の遮熱材１とが一体物であるため、強固な保形性を有するボード状断熱材２の張設作業のみで同時に遮熱材１の付設被覆が完了し、遮熱材１による断熱材２表面の被服保護作業が合理化出来る。
しかも、ボード状断熱材２は、保形性があって構造材に対する釘打ち固定でも、接着固定でも可能なため、天井断熱の如き水平形態利用はおろか、外壁断熱等の垂直形態でも、屋根断熱等の傾斜形態でも使用可能となり、本発明遮熱材1の汎用性が大となる。
【００２８】
また、ボード状断熱材一体化遮熱材にあっては、ボード状断熱材２が木質系断熱材であり、遮熱材の各シートが紙材であるのが好ましい。
尚、木質系断熱材は、典型的にはインシュレーションボードであり、紙材は典型的にはクラフト紙である。
この場合、紙材の接着性及び折り目付与性のため、シート材へのアルミニウム箔貼着、起立片１３，１４への折曲面１３´，１４´の折曲形成、及び自立片の屈曲形成等の作業は機械化により容易である。
【００２９】
そして、木質系断熱材の保形性により取付施工作業が容易であると共に、木質系断熱材自体の吸放湿性及び遮音性によって、適用した断熱構造にあっては、断熱材の加熱、蓄熱が軽減出来、遮音性に富み、結露の生じない良好な住環境となる。
その上、木質系断熱材２は、フレーム１０の各紙材同様、建物解体後に廃棄しても、微生物によって比較的早く分解して土になるため、環境にも負荷を与えない。
【００３０】
【発明の実施の形態】
〔フレーム１０の製作（図２、図４）〕
図２（Ｂ）及び図４は、フレーム１０の長手方向端面を表わしたものであり、上面シート１１、下面シート１２及び両端の起立片１３には厚さ０．３mmのクラフト紙を採用し、中間の起立片１４には厚さ０．１mmのクラフト紙を採用する。
また、上面シート１１、下面シート１２及び両側の起立片１３は、表面を６×１０^−３〜６×１０^−２mm厚の市販のアルミニウム箔で貼着被覆する。
各シートの幅は、下面シート幅１２Ｗが４００〜５００mmとし、上面シート幅１１Ｗは下面シート幅１２Ｗよりも両側の各突出縁１１Ｅ（標準：２０mm）分広く、両側の起立片１３は、２０〜４０mm＋上側折曲面１０mm、下側の折曲面１０mmであり、中間の起立片１４は、２０〜４０mm＋両側に各折曲面１０mm設ける。
【００３１】
また、図４（Ａ）の如く、上面シート１１及び下面シート１２には、ニードリング処理により微細孔ｈを穿設して透湿性を付与し、上面シート１１にはさらに図５（Ｂ）の如く、３〜５mm径の空気孔Ｏを分散穿孔する。
次いで、両側の起立片１３は、上下折曲面１３´を外側に折曲部ｒで折曲してアルミ箔面を外側とし、中間起立片１４は、上側折曲面１４´と下側折曲面１４´とを反対方向に折曲部ｒで折曲し、上側面（表面）をアルミ箔とした上面シート１１と下面シート１２間に各起立片１３，１４を折曲面１３´，１４´により接着する。
得られるフレーム１０は、各起立片１３，１４の折曲部ｒによる折曲、伸長により、立体形態、又は積層形とすることが出来る。
【００３２】
アルミニウム箔はロール巻き形態で入手出来るため、アルミニウム箔の各クラフト紙への貼着も、起立片１３，１４の折曲面１３´，１４´形成も、折曲面１３´，１４´への接着剤塗布も、機械化手段で実施出来、ロール群装置（図示せず）により得られる積層形態の製品を所望寸法長に裁断すれば嵩の低い積層形態のフレーム１０が得られる。
勿論、必要に応じて、各シート材の折曲、貼着、切断は手作業で実施しても良い。
【００３３】
〔自立片（図１、図２）〕
自立片１５は、断面が図２（Ｂ）の如く頂角θが４０〜５５°で等長、且つ、平面から成る傾斜部１５ｓを備えた屈曲立体形態であり、上面シート１１と同様に０．３mm厚のクラフト紙の表面にアルミ箔を貼着し、微細孔ｈを穿設して透湿性を付与し、更に、３〜５mm径の空気孔Ｏを分散穿孔したシート材を頂部１５ｔ及び底部１５ｂで折曲して形成する。
【００３４】
従って、自立片１５は、幅方向にアコーデオン状に伸縮可能なものであり、傾斜部１５ｓ１辺の頂部１５ｔから底部１５ｂまでの寸法は、図１の如く、フレーム１０の空気層空間Ｓ内に自立片１５を挿入し、両端１５Ｅが両側隅端部ＳＥに当接した際に、傾斜部１５ｓに、ブレース機能と支柱機能とをバランスさせるために、空間Ｓの高さＳＨと底部１５ｂ相互間寸法ＰＬとが略同一（ＰＬ／ＳＨ＝０．８〜１）で、且つ頂部１５ｔ及び底部１５ｂがそれぞれ上面シート１１及び下面シート１２に当接する寸法とし、空気層空間Ｓの幅ＳＷ及び高さＳＨに対応して決定する。
【００３５】
〔遮熱材の製作〕
〔例１（図１、図２）〕
用意したフレーム１０の各空気層空間Ｓ内に、別途用意した自立片１５を立体形状として挿入する。
この場合、空間Ｓの幅ＳＷ及び高さＳＨに対して、自立片１５の幅１５Ｗ、傾斜部１５ｓの寸法、及び頂角θの決定が適切であれば、自立片１５の両側端部１５Ｅが両側の起立片１３，１４の基部の隅端部ＳＥに当接し、且つ頂部１５ｔが上面シート１１に、低部１５ｂが下面シート１２に当接して上面シート１１及び下面シート１２を平坦形態に保持し、この状態でフレーム隅端部ＳＥと自立片端部１５Ｅとを接着剤Ａｄで固定する。
【００３６】
そして、自立片１５は、頂角θが４０〜５５°であれば、底部１５ｂ相互の間隔寸法ＰＬは空気層空間Ｓの高さ寸法ＳＨと同一か、若干小となり、上面シート１１に対して多くの頂部１５ｔが配置出来、空気層空間Ｓ内の空気流動に対する干渉抑制と、支柱機能及びブレース機能発揮とを充たす形態となり、且つ、各傾斜部１５ｓも平面であって座屈抗力は大となり、薄くて軽いクラフト紙でありながら強固で充分な支柱機能を奏する。
【００３７】
この場合、フレーム１０に対する自立片１５の寸法の選定に若干の誤差があって、自立片頂部１５ｔが上面シート１１を若干持上げ形態となっても、また、上面シート１１が頂部１５ｔより若干浮上った状態となっても、自立片１５がフレーム１０を立体形態に保持出来れば良い。
【００３８】
しかし、自立片１５の傾斜部１５ｓがブレース兼支柱作用を好適に奏するためにも、自立片１５のフレーム１０からの抜脱を防止するためにも、自立片端部１５Ｅの下面シート１２との固定は好ましく、端部１５Ｅが隅端部ＳＥに対して当接状態であれば、頂部１５ｔへの押圧力によって端部１５Ｅが拡開応力を受けても端部１５Ｅの拡開すべりは起立片１３，１４の基部が阻止し、自立片１５がブレース機能及び支柱機能を発揮するので、端部１５Ｅと隅端部ＳＥとの固定は、自立片１５の滑動、抜脱阻止程度の点接着で充分である。
【００３９】
また、自立片１５のフレーム１０に対する寸法選定により、自立片頂部１５ｔと上面シート１１下面とが遊離してフレーム１０が傾動する恐れのある場合は、自立片頂部１５ｔを上面シート１１とホッチキス等で止着しても良く、必要に応じて、上面シート１１又は下面シート１２と、自立片の頂部１５ｔ又は底部１５ｂとを接着剤、ホッチキス等、慣用の固定手段で止着すれば良い。
【００４０】
〔例２（図３）〕
図３は、例１で得られる遮熱材１の下面シート１２が下面に硬質ウレタンフォーム断熱材２を備えたものであり、（Ａ）は斜視図、（Ｂ）は（Ａ）のＢ−Ｂ断面図、（Ｃ）は各構成材の分解斜視図である。
例１の遮熱材は、フレーム１０の上面シート１１、下面シート１２、起立片１３、及び自立片のシートが０．３mm厚のクラフト紙であり、自立片の頂角θを４０〜５５°、空気層空間Ｓの高さＳＨを２０〜３０mmに選定した遮熱材１は、硬質ウレタンフォームの注入時の発泡圧０．５kg／cm^２に充分耐えられるため、遮熱材１を中芯材として型組みし、下面シート１２の下面に硬質ウレタンフォームを充填発泡一体化出来る。
【００４１】
また、図８（Ａ）の如く、遮熱材１が、下面シート長１２Ｌのみ断熱材長２Ｌと同長の場合は、遮熱材１の両端に補助枠を当接して遮熱材１を中芯材とすることにより断熱材を充填発泡一体化出来る。
勿論、フレーム１０は起立片１３，１４の倒伏によって積層化して、断熱材型組みして、硬質ウレタンフォームと下面シート１２とを一体化した後、例１の如く、フレーム１０内に自立片１５を挿入固定しても良い。
【００４２】
〔遮熱材の性能（図７）〕
発明者は、図７に示す如く、空気対流のない実験室内で断熱材２上に遮熱材１を載置し、遮熱材上部のヒーターで加熱して、各部位での温度を測定したところ、遮熱材上方の空気層ａ１が５７．８℃の際に、フレーム上面シート（アルミ箔）ａ２は５１．６℃、アルミ箔を備えた自立片１５の上部空間上層空気ａ３は５０．０℃、自立片中層ａ４は４９．８℃、自立片下部空間ａ５は４８．０℃、フレーム下面シートａ６は４７．４℃、断熱材表面ａ７は４７．０℃であった。
即ち、簡単なモデル試験ではあったが、遮熱材１が、上方空気層ａ１の５７．８℃を断熱材表面ａ７の４７．０℃に、１０℃以上阻止出来ること、及び自立片の上部空間ａ３と下部空間ａ５とは２℃の温度差があることより、自立片の傾斜部１５ｓ（図１）も有効な熱線反射作用を奏すること、が確認出来た。
【００４３】
〔変形例〕
フレーム１０に於て、上面シート１１の幅１１Ｗと下面シート１２の幅１２Ｗとを同一とし、且つ同幅同長のボード状断熱材２と一体化すれば、木枠間への、断熱材側からの嵌め込みも、遮熱材側からの嵌め込みも可能となる。
また、自立片１５は、図６（Ａ）の如く、断面台形状に屈曲立体化し、頂部１５ｔ及び底部１５ｂを平面形態としても、傾斜部１５ｓがブレース兼支柱の役割を果し、図６（Ｂ）の如く、断面形状を底部１５ｂから傾斜部１５ｓが弾頭形に膨出しても、フレーム１０の立体形態保持は可能である。
但し、図６（Ｂ）のものにあっては、押圧による抗座屈力が充分でないため、断熱材の充填一体化成形は自立片１５の組付け前に実施する必要があり、また、自立片の保管時の折曲又は延長は無理であり、自立片自体もクラフト紙での製作は適切でなく、プラスチック成形が適している。
【００４４】
〔遮熱材１の使用（図８、図９、図１０）〕
フレーム１０の空気層空間Ｓ内に自立片１５を挿入して上面シート１１の横変位や垂れ下りを防止して立体形態の保持された遮熱材１は、単体のボード状部材として適所に配置可能である。
例えば図９の如く、屋根裏の天井下地材３で張設された天井仕上材４上に、慣用のグラスウール等の断熱材２を慣用の施工によって敷設し、該断熱材表面を本発明の遮熱材１の載置により被覆保護出来る。
【００４５】
図１０は、上面シート１１が両側縁に突出縁１１Ｅを備え、下面シート１２より幅広である遮熱材１の当接配置形態の説明図であり、遮熱材１相互の当接位置が凹面の場合（Ａ）でも、上面シートの突出縁１１Ｅ相互がオーバーラップ形態となり、輻射熱反射層Ｒｅを備えた上面シート１１による断熱材２表面の完全被覆は達成出来る。
また、図１０（Ｂ）の如く、遮熱材相互の当接位置が凸面の場合でも、相互の上面シート突出縁１１Ｅのオーバーラップ形態が拡開するだけで、断熱材２表面の完全被覆は達成出来る。
【００４６】
また、図１０（Ｃ）は、遮熱材相互の当接位置に横架材３０等の部材が介在して下面シート１２の側縁相互が当接出来ない場合であるが、この場合でも上面シート１１の両側からの突出縁１１Ｅが下面シート１２間の隙間をカバーする。
しかも、上面シート１１が突出縁１１Ｅを備えている場合は、遮熱材１相互に若干の寸法間隔の存在する形態でも断熱材２全表面の被覆が可能であるため、遮熱材１の敷設が容易となる。
【００４７】
また、上面シート１１と下面シート１２とが同幅の遮熱材１にあっては、あたかも１枚の断面方形ボード材の如く、配置空間内に上面からでも裏面からでも嵌合可能となり、例えば、屋根下地張設後の狭い空間の屋根裏等、作業員が入り込めない場所であっても、下側から嵌め込むことが可能となる。
また、断熱材２を下面シート１２に一体化した遮熱材１は、ボード状断熱材２が保形性を有すると共に、釘打ちや面接着が可能なため、遮熱材１の固定の困難な場所への張設に有利である。
【００４８】
【発明の効果】
遮熱材１は、フレーム１０の上面シート１１と下面シート１２との間の空気層空間Ｓ内に挿入した自立片の頂部１５ｔ及び底部１５ｂが上下両シート１１，１２を当接支持すると共に、自立片の断面立体形態の上部空間Ｓｔ及び下部空間Ｓｂが空気層空間Ｓの空気流動を保証するため、断熱材２の表面には保形性を有するボード状部材の如く適用可能であり、遮熱材１の上面シート１１の輻射熱反射層Ｒｅが熱線を反射して断熱材への輻射熱加熱を阻止し、自立片１５によって保証された遮熱材内の長手方向の空気流動によって遮熱材内の空気の高温化も阻止するため、遮熱材１の外方からの断熱材２への熱伝達のうち、輻射熱伝達と対流熱伝達には遮熱材１が対処して、断熱材２の加熱及び蓄熱を軽減する。
【００４９】
しかも、空気層空間Ｓの上面を規定するシート１１、及び自立片１５が全面に空気孔Ｏを散在しているため、遮熱材１の内部の空気は、全て遮熱材の上方へ空気連通可能となり、遮熱材内部の熱及び湿気の平準化排出が可能となり、遮熱材１の耐侯性が向上する。
また、断熱材２の加熱が抑制出来るため、断熱材２の肉厚も従来のそれより薄く出来るため、断熱材の蓄熱が抑制出来ると共に、遮熱材１に断熱材２を重ねた断熱構造厚も従来の断熱材２層のみの肉厚に抑えることも出来、高断熱、且つ低蓄熱の高性能断熱構造が断熱構造厚の増大を招くことなく実施出来る。
【００５０】
また、フレーム１０の構成材（上面シート、下面シート、起立片）も自立片１５の構成材もシート材であって、折曲容易、且つ接着容易であるため、アルミニウム箔の接着や、折曲や、相互の接着等の施工が容易である。
しかも、自立片１５は、フレ−ム１０内への挿入物であり、フレーム１０も倒伏によって積層状態での保管、搬送が可能であるため、必要時点での遮熱材の組立てが可能であり、遮熱材としての製作、管理が容易である。
【００５１】
また、遮熱材１として使用中は、自立片１５は、頂部１５ｔ及び底部１５ｂで上面シート１１と下面シート１２とを支承保持して立体形態を保証するため、自立片１５の頂部１５ｔと底部１５ｂとの間の傾斜部１５ｓが支柱兼ブレースとしての機能を奏し、クラフト紙等のシート材で構成したにもかかわらず、強固、且つ充分な立体形態保持力を発揮する。
また、下面シート１２の透湿性によって、断熱材２からの湿気が空気層空間Ｓの下部空間Ｓｂを介して空気流動で排除出来、断熱材２の吸湿による機能低下が阻止出来る。
【００５２】
また、自立片１５も表面に輻射熱反射層Ｒｅを備えているため、上面シート１１の輻射熱反射層Ｒｅを透過したわずかな熱線も自立片１５の上部空間Ｓｔ内で反射阻止され、上部空間Ｓｔ内の流動空気によって排出される。
従って、遮熱材１は、自立片１５によって強固な立体形態保持が可能であると共に、上面シート１１による輻射熱（熱線）加熱阻止に、更に、自立片による副次的な熱線加熱阻止も加わり、断熱材２表面への配設が容易であり、且つ、充分な輻射熱加熱阻止機能を備えたものとなる。
【００５３】
また、遮熱材１のフレーム１０の上面シート幅１１Ｗが、他のシート幅１２Ｗより大であるため、上面シート側縁をオーバーラップ形態として下面シート１２相互を衝接させる配置も、上面シート側縁相互を衝接して、下面シート側縁相互が間隔を有する形態の配置も可能となり、遮熱材１の断熱材２層の被覆保護形態の自由度が高まる。
また、遮熱材１のフレーム１０の下面シート１２が、両端に上面シート１１より突出した延長部Ｌ２０を備えているため、遮熱材１の両端を仕切材や壁に当接配置しても、延長部Ｌ２０によって間隔Ｇ１０が形成出来、遮熱材内部から外方への空気排出が保証出来る。
【図面の簡単な説明】
【図１】本発明遮熱材の説明図であって、（Ａ）は斜視図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図である。
【図２】本発明遮熱材の説明図であって、（Ａ）は自立片挿入状態斜視図、（Ｂ）は（Ａ）のＢ−Ｂ線断面でのフレーム１０及び自立片１５の分解断面図である。
【図３】本発明の断熱材一体化遮熱材の説明図であって、（Ａ）は斜視図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図、（Ｃ）は分解斜視図である。
【図４】本発明のフレームの説明図であって、（Ａ）は起立途中の形態を、（Ｂ）は起立状態の図である。
【図５】本発明の構成材の斜視図であって、（Ａ）は自立片の、（Ｂ）は上面シートの図である。
【図６】（Ａ），（Ｂ）は、それぞれ異なる自立片１５の変形例正面図である。
【図７】本発明遮熱材の性能試験の説明略示図である。
【図８】本発明断熱材一体化遮熱材の説明図であって、（Ａ）は遮熱材斜視図、（Ｂ）は使用状態説明図である。
【図９】本発明遮熱材の天井断熱構造への使用説明斜視図である。
【図１０】本発明の遮熱材の使用形態説明図であって、（Ａ）は遮熱材の当接位置が凹面である場合を、（Ｂ）は当接位置が凸面である場合を、（Ｃ）は当接位置に横架材がある場合を示す図である。
【図１１】従来例の斜視図であって、（Ａ）は概略を、（Ｂ）は遮熱材の固定形態を示す図である。
【符号の説明】
１：遮熱材、２：断熱材、３：天井下地材、
４：天井仕上材、１０：フレーム、
１１：上面シート、１２：下面シート、
１３，１４：起立片、１３´，１４´：折曲面、１５：自立片、
１５ｔ：頂部、１５ｂ：底部、１５ｓ：傾斜部、
１５Ｅ：端部、ｈ：微細孔（ピンホール）、
Ｏ：空気孔、Ｒｅ：輻射熱反射層（アルミ箔）、
Ｓ：空気層空間、ＳＥ：隅端部、
Ｓｔ：上部空間、Ｓｂ：下部空間[0001]
BACKGROUND OF THE INVENTION
  The present invention is a heat shielding material that covers and protects the surface of a heat insulating material used in a heat insulating structure of a house, and blocks and prevents a heat ray applied to the surface of the heat insulating material, thereby reducing heating and heat storage of the heat insulating material. Belongs to the technical field of residential construction.
[0002]
[Prior art]
  In a typical wooden house building, for example, in the attic, it is constructed so that the temperature inside the attic is assimilated to the outside air as much as possible, but the temperature inside the attic is It may become hot depending on the construction area of the object, the sunshine conditions, and the season.
  In general, in order to reduce the adverse effects on the interior of the room due to the heat in the interior space of the shed, fiber insulation is blown into the back of the ceiling of the house (upper surface of the ceiling finishing material) or hard Urethane foam insulation is laid.
  However, although the heat insulating material itself suppresses the transfer of conduction heat, it is exposed to severe heating conditions.As a result of storing a large amount of heat, the heat storage amount is stored as a heat accumulator even if the outside air temperature falls, such as at night. For example, in a living room, the cooling energy load increases.
[0003]
  In order to solve the above-mentioned problem, the present applicant has proposed an innovative heat insulation structure for a house as Japanese Patent Application No. 2000-271335 (Japanese Patent No. 3251000).
  FIG. 11 is an invention of Japanese Patent No. 3251000, which covers and protects a heat insulating material with a heat shielding material provided with a radiant heat reflecting layer, and out of heat applied to the heat insulating material of a house from the outside. Although it is an extremely effective heat insulation method that prevents radiant heat heating and reduces heat and heat storage of the heat insulating material, the heat insulating material does not retain its shape and falls down, so the end of the heat insulating material can It is necessary to fix it by nailing or fixing to a beam or a wall plate. For example, as shown in FIG. At the place where the heat shield is in contact with the bundle, the heat shielding material is notched and fitted, and a part of the notched portion of the top sheet of the heat shielding material is fixed to the bundle as a mounting piece P, so that the heat shielding material can function effectively. Was holding.
[0004]
[Problems to be solved by the invention]
  The invention of the heat insulation structure of FIG. 11 (Patent No. 3251000) is effective with an epoch-making function to reduce heating and heat storage on the heat insulating material as described above. When applying to the above, it is difficult to attach the heat shield, and it is difficult to keep the heat shield in a uniform three-dimensional form.
  The present invention has a novel structure of a heat shield material that is easily deformed, imparts self-supporting property to the heat shield material itself, and makes it easy to protect the heat shield material from covering.
[0005]
[Means for solving the problems and actions]
  The first invention of the heat insulating material for protecting a heat insulating material of the present application is, for example, as shown in FIG. 1, inserted into and held in a frame 10 (FIG. 2) made of a sheet material and an air space S in the frame 10. The frame 10 includes a plurality of frames 10 including at least an upper surface sheet 11 and a moisture-permeable lower surface sheet 12 having at least the upper surface sheet 11 provided with a radiant heat reflection layer Re on the surface. The sheet is connected by upright free standing pieces 13 and 14 made of a sheet material to form an air layer space S through which air can flow in the longitudinal direction, and the free standing piece 15 has a radiant heat reflecting layer Re on the surface. In addition, a top portion 15t, a bottom portion 15b, and an intermediate inclined portion 15S that contact and support the upper surface sheet 11 and the lower surface sheet 12 are provided, and are bent upright in a form parallel to the longitudinal direction between the width direction both end portions 15E. Are those made into a sheet 11 defining the upper surface of the air layer space S, and the free-standing piece 15,In order to allow the air flow inside the heat shield 1 to communicate with the air above the heat shield 1The air holes O for air communication are scattered.
[0006]
  The “sheet material” is paper that can be easily bent and can maintain a planar shape, a non-woven sheet, etc., and is typically kraft paper having a thickness of 0.1 to 0.3 mm.
  The “radiant heat reflection layer Re” is a heat reflective metal foil or metal vapor deposition film, and is typically 6 × 10 easily available on the market.^-3~ 6 × 10^-2mm-thick aluminum foil.
  The radiant heat reflection layer Re is formed by the upper surface sheet 11.Surface and freestanding piece 15 surfaceIs required, but if necessaryDownIf applied to the face sheet 12, for example, the top face sheet 11And free-standing piece 15Even if the radiant heat reflection layer Re is contaminated with dust or the like and the heat ray reflection function is lowered, the lower radiant heat reflection layer Re compensates, and the heat ray transmission preventing function of the heat shield 1 is further improved.
[0007]
  Further, the “three-dimensional bending” of the self-supporting piece 15 means that the sheet surface protrudes up and down, such as a three-dimensional bending by a fold as shown in FIG. 2 and a three-dimensional bending by a bending as shown in FIG. It is a broad meaning including three-dimensional objects.
  The “plurality of sheets” of the frame 10 includes both the upper sheet 11 and the lower sheet 12 as well as the case where an intermediate sheet (not shown) is provided. The upper sheet 11 and the lower sheet 12 are two layers. If there are two layers of air layer space S in the middle, and if the sheet has three layers, two layers of air layer space S can be formed above and below the intermediate sheet.
  Further, the self-supporting piece 15 may be inserted into the air space S and supported and held between the upper and lower sheets 11 and 12 by the top 15t and the bottom 15b, and the air flow in the space S may be guaranteed. Need not be the same length.
[0008]
  Accordingly, since the heat shield material 1 of the present invention is held in three-dimensional form by the self-supporting pieces 15, it is easy to cover the heat insulating material 2 applied to various parts of the house. If the heat insulating material 2 is covered, the radiant heat reflecting layer Re of the top sheet 11 of the heat shielding material 1 reflects the heat rays to prevent radiant heat heating to the heat insulating material, and the self-supporting piece 15 inserted into the air layer space S. Since the air flow in the longitudinal direction assured by the air also prevents high temperature in the heat shield 1, heat transfer from the outside of the heat shield 1 to the heat insulation 2 is effective for radiation and convection in the heat shield 1. Therefore, heating and heat storage to the heat insulating material 2 can be reduced.
[0009]
  Further, since the constituent material of the frame 10 (upper surface sheet, lower surface sheet, upright piece) and the self-supporting piece 15 constituent material are easy to bend, it is possible to bond aluminum foil, bend it, bond it to each other, etc. Is easy to install.
  Moreover, the self-supporting piece 15 is an insert into the frame 10 (in the air layer space), and the frame 10 itself can be stored and transported in a laminated form by the fall of the standing pieces 13 and 14, so that the necessary time point It can be assembled as a heat shield and can be easily manufactured and managed as a heat shield.
[0010]
  AndThe top portion 15t and the bottom portion 15b of the self-supporting piece 15 abuts and supports the upper surface sheet 11 and the lower surface sheet 12 of the frame 10 to form the upper space St and the lower space Sb having a three-dimensional cross section of the self-supporting piece 15. Under the air flow guarantee, it becomes possible to hold a three-dimensional shape over the entire surface, and it becomes easy to cover and hold the heat insulating material 1 on the surface of the heat insulating layer 2.
0011]
  In addition, as shown in FIG. 5, since the air holes O are scattered over the entire surface of the sheet 11 that defines the upper surface of the air space S of the frame 10 and the self-supporting piece 15, all the air inside the heat shield 1 is blocked. Air communication is possible above the heat material, and in combination with the longitudinal air flow in the air layer space S, that is, in the upper space St and the lower space Sb of the self-supporting piece, the heat and moisture inside the heat shield 1 Leveling discharge becomes possible, and the weather resistance of the heat insulating material 1 is improved..
[0014]
  In addition, the heat shielding material2The invention includes a frame 10 made of a sheet material, and a self-supporting piece 15 made of a sheet material that is inserted and held in the air space S in the frame 10 to hold the three-dimensional form of the frame 10, and the frame 10 has at least an upper surface. The sheet 11 includes a plurality of sheets including at least the upper surface sheet 11 and the moisture-permeable lower surface sheet 12 provided with a radiant heat reflection layer Re on the surface, and the lower surface sheet 12 is disposed at both longitudinal endsIn order to form a gap G10 that guarantees air conduction in the air space S at both ends of the heat shield 1,It has an extended portion L20 that protrudes, and is connected by an upright free standing piece 13 and 14 made of a sheet material to form an air layer space S through which air can flow in the longitudinal direction. The free standing piece 15 has radiant heat on its surface. It is provided with a reflective layer Re, and is provided with a top portion 15t, a bottom portion 15b, and an intermediate inclined portion 15S that contact and support the top sheet 11 and the bottom sheet 12, and is bent in a form parallel to the longitudinal direction between the width direction both end portions 15E. Three-dimensional.
[0015]
  The second2In particular, according to the present invention, as shown in FIG.In order to form a gap G that guarantees air conduction in the air space S at both ends of the heat shield 1,The point provided with the extension part L20 which protruded from the upper surface sheet | seat 11 is made into a part of essential structural requirements.
  Therefore, similarly to the first invention, heating and heat storage to the heat insulating material 2 can be reduced, and if the board-shaped heat insulating material 2 is integrated with the lower surface sheet 12 of the heat shielding material 1, for example, FIG. As described above, even if both ends of the board-shaped heat insulating material 2 are placed in contact with and fitted to a partition material such as a wall or a hut beam, between the opposing vertical surface Vf of the partition material and the end of the heat shield material 1, A gap G10 can be formed by the extension L20, and air conduction in the air layer space S in the heat shield material 1, that is, the upper space St and the lower space Sb of the self-supporting piece is guaranteed, and the heated air inside the heat shield material 1 The function of discharging and discharging moisture can be exhibited.
  In this case, if the lower surface sheet 12 is also provided with the radiant heat reflecting layer Re, the radiant heat heating on the entire surface of the heat insulating material 2 can be suppressed. However, the gap G10, that is, the extended portion L20 is heated to the heat insulating material full length 2L. The radiation heat reflecting layer Re on the extension L20 can be omitted if it is small enough to be ignored for the prevention effect.
0016]
  Further, the frame 10 made of a sheet material can be laid down and raised by the standing pieces 13 and 14, and the self-standing piece 15 made of the sheet material has an inclined portion 15s between the top portion 15t and the bottom portion 15b, and the top portion 15t and It is preferably foldable and / or extendable at the bottom 15b.
  The meaning of “extension” of the self-supporting piece 15 is such that the extended state in which the top portion 15t and the bottom portion 15b of the protruding form are flat can be handled as the sheet form by the flattening deformation of the top portion 15t and the bottom portion 15b. It is a broad meaning including the extended state.
  In this case, before the heat shield material 1 is assembled and manufactured, the frame 10 and the self-supporting piece 15 can be stored and transported separately in a low-bulk laminated form, which makes it easy to manufacture and manage the heat shield material 1. Become.
0017]
  If the self-supporting piece develops a spreading stress in the width direction, both end portions 15E come into contact with and stabilize when the frame 10 is inserted into the space S of the frame 10, and the self-supporting piece 15 is stored in an extended form. Is effective.
  Moreover, during use as the heat shield 1, the self-supporting piece 15 supports and holds the upper surface sheet 11 and the lower surface sheet 12 at the top portion 15t and the bottom portion 15b, so that the inclined portion 15s of the self-supporting piece 15 functions as a post and brace. Even though it is made of a light and thin sheet material such as kraft paper, it exhibits a strong and sufficient three-dimensional shape holding power.
0018]
  Moreover, in the heat insulating material 1 of this invention, the lower surface sheet 12 has moisture permeability.UnderAs the face sheet 12, a moisture permeable material may be selected, or fine holes h (FIG. 4) may be scattered in the non-moisture permeable material by a needling process.
  In this case, even if the hygroscopic heat insulating material 2 is covered and protected, the moisture of the heat insulating material 2 can be released from the lower surface sheet 12 to the air layer space S, that is, the lower space Sb of the self-supporting piece 15. It is possible to suppress a decrease in the heat insulation function due to.
0019]
  Further, in the heat shielding material 1 of the present invention, the self-supporting piece 15 has a radiant heat reflection layer Re on the surface.The
  In this case, after sticking aluminum foil to a sheet material (typically kraft paper) for a self-supporting piece, the sheet material may be bent and three-dimensionalized.
  If the surface of the self-supporting piece 15 has the radiant heat reflection layer Re, as shown in FIG. 1, the heat rays transmitted through the upper surface sheet 11 into the upper space St penetrating in the longitudinal direction below the upper surface sheet 11 are also self-supporting. Since it reflects on one surface and prevents downward transmission, the radiation heat blocking function of the heat shielding material 1 is increased, and the heated air by the reflected heat rays on the surface of the freestanding piece 15 is also suitably eliminated by the upper space St, and the heat shielding Overheating in the material 1 can be prevented.
[0020]
  The frame 10 preferably has a top sheet width 11W larger than the other sheet width 12W..
  In this case, the heat shielding material 1 has the effect of reducing the heating and heat storage of the heat insulating material 2, and the parallel arrangement of the heat shielding materials 1 overlaps the top sheet side edge as shown in FIG. The arrangement in which the lower surface sheets 12 are brought into contact with each other as the form may be arranged as shown in FIG. 10C, and the upper sheet side edges are brought into contact with each other and the lower sheet side edges are spaced from each other. Even when there is a gap between the heat insulating materials 2 such as when wood is present between the materials 2, it is possible to completely cover and protect the surface of the two layers of the heat insulating material including the interposing wood. Increase the degree of freedom.
  Moreover, it is preferable that all the sheets (upper surface sheet, lower surface sheet) of the frame 10 and the upright pieces 13 and 14 and the self-standing pieces 15 have moisture permeability.
  In this case, even a sheet with aluminum foil adhered can be made moisture permeable by providing scattered pinholes (micropores) h by needling. Therefore, the moisture permeability should be imparted in the sheet state before the manufacture of the frame 10 and the self-supporting piece 15. It ’s fine.
  If all the constituent members of the heat shield 1 are moisture permeable, even if applied to a hygroscopic heat insulating material, it is possible to prevent the heat insulation function from deteriorating due to moisture absorption of the heat insulating material, and also prevent condensation inside the heat shield material. It is possible to prevent deterioration of the heat shielding material such as condensation of the radiant heat reflection layer Re and moisture absorption corrosion of the sheet material.
0021]
  Further, as shown in FIG. 1, it is preferable that the self-supporting one end portion 15 </ b> E is in contact with the corner end portion SE of the air space S of the frame 10.
  Since the self-supporting piece 15 is bent and three-dimensionalized, the width direction of the sheet material is narrowed. In a state where the both ends 15E are supported and the width 15W is fixed, the self-supporting piece 15 is pressed by the top surface 15t. However, since both ends 15E come into contact with the corner end portion SE and the expansion in the width direction is prevented, the inclined portion 15s descending from the top portion 15t to the both sides is generated. It works as a support with a brace function and exhibits great drag.
  Accordingly, in this case, in particular, the height SH of the space S and the distance PL between the bottom portions 15b are substantially the same (PL / SH = 0.8 to 1), that is, the apex angle θ of each freestanding top portion 15t is set to 40 to 55. If it is selected, the three-dimensional shape holding force of the frame 10 is maximized, and even a conventional free-standing piece made of kraft paper can hold a strong and sufficient three-dimensional shape.
0022]
  Further, in the heat shield material 1 of the present invention, if the self-supporting piece 15 does not expand in the width direction in the air space S of the frame 10, the self-supporting piece 15 has a slanted portion 15 s that exhibits a brace and strut function. Although it is not essential to fix the self-supporting piece 15 to the frame 10, it is preferable to fix the self-supporting piece 15 in the frame space S.
  In this case, the free-standing piece 15 can be prevented from being pulled out and dropped out of the frame 10, so that the heat shield material 1 can be arranged easily, and the vertical arrangement with respect to the outer wall heat insulating material or the inclined arrangement with respect to the roof heat insulating material. Any form can be used.
0023]
  In addition, it is preferable that the self-supporting piece 15 fastens the end 15 </ b> E to the corner end SE of the air space S of the frame 10.
  In this case, after the free-standing piece 15 is inserted into the air space S from one longitudinal end of the frame 10, the end 15 </ b> E is formed at one end or both ends of the free-standing piece 15 as shown in FIG. What is necessary is just to affix the adhesive Ad in contact with the end SE, and the fastening operation is simple.
  And since the displacement in the width direction of the self-supporting piece 15 is fixed, in the self-supporting piece 15, the inclined portion 15s functions as a brace (slanting material) and a column, and the solid form of the frame 10 is firmly and sufficiently held.
0024]
  Moreover, it is preferable that the heat shielding material is set such that the dimension PL between the bottom portions 15b of the self-supporting piece 15 is substantially equal to the height SH of the air layer space S.
  In this case, mechanically, if the air layer space height SH and the distances PL between the bottom portions 15b are substantially equal, the self-supporting piece 15 has the top portion in a state where interference with the air flow in the air layer space S is suppressed. Each inclined portion 15s from 15t balances the strut function and the brace function.
  And if each top part 15t and bottom part 15b of the self-supporting piece 15 are fixed to the upper surface sheet 11 and the lower surface sheet 12, the inclined part 15s becomes the strongest brace and strut, so that it is self-supporting at an appropriate position as necessary. It is preferable to fix the top 15t of the piece 15 and the top sheet 11.
0025]
  Moreover, it is preferable that each top part 15t and bottom part 15b of the self-supporting piece 15 are fold lines, and each inclined part 15s is a plane.
  In this case, the self-supporting piece 15 is easy to manufacture because the sheet material is bent at a crease line with a predetermined dimension, and can be handled as a laminated form or an expanded sheet form, which is advantageous for storage and conveyance. .
  Moreover, mechanically, if the inclined portion 15s is a flat surface, the buckling resistance becomes large, and the self-supporting piece 15 having the maximum support function and brace function is obtained.
0026]
  Further, in the heat shielding material 1 of the present invention, it is preferable that the lower surface sheet 12 of the frame 10 is integrally provided with the board-shaped heat insulating material 2.
  Integration of the lower surface sheet 12 of the frame 10 and the board-like heat insulating material is performed by assembling the frame 10 on the form frame in a laminated form by the standing pieces 13 and 14 lying down, and filling with a foam heat insulating material such as rigid urethane foam. It may be integrated with the lower surface sheet 12 of the frame 10 by foaming, or a wooden heat insulating plate such as a molded foam heat insulating plate or an insulation board may be bonded to the lower surface sheet 12 of the frame 10.
0027]
  In this case, since the board-like heat insulating material 2 and the three-dimensional shape heat insulating material 1 are integrated, the heat insulating material 1 is attached simultaneously only by the stretching work of the board-shaped heat insulating material 2 having a strong shape retaining property. Covering is completed, and the clothing protection work on the surface of the heat insulating material 2 by the heat insulating material 1 can be rationalized.
  Moreover, since the board-like heat insulating material 2 has shape retention and can be fixed by nailing or bonding to the structural material, it can be used in a horizontal form such as a ceiling heat insulation, or in a vertical form such as an outer wall heat insulation. It is possible to use even the inclined form such as the above, and the versatility of the heat shielding material 1 of the present invention is increased.
0028]
  Further, in the board-like heat insulating material integrated heat shield, it is preferable that the board-like heat insulator 2 is a wood-based heat insulator and each sheet of the heat shield is a paper material.
  The wood-based heat insulating material is typically an insulation board, and the paper material is typically kraft paper.
  In this case, for the adhesiveness and crease imparting property of the paper material, the aluminum foil is attached to the sheet material, the folded curved surfaces 13 'and 14' are formed on the upright pieces 13 and 14, and the self-standing pieces are bent. This work is easy by mechanization.
0029]
  And the installation work is easy due to the shape retention of the wood-based heat insulating material, and in the heat insulating structure applied due to the moisture absorbing / releasing property and sound insulation of the wood-based heat insulating material itself, heating and heat storage of the heat insulating material It can be reduced, has a good sound insulation, and has a good living environment with no condensation.
  In addition, like the paper materials of the frame 10, the wood-based heat insulating material 2 decomposes relatively quickly by microorganisms into soil even when discarded after the building is demolished, and thus does not give a load to the environment.
0030]
DETAILED DESCRIPTION OF THE INVENTION
[Fabrication of frame 10 (FIGS. 2 and 4)]
  FIG. 2 (B) and FIG. 4 represent the longitudinal end face of the frame 10, and kraft paper having a thickness of 0.3 mm is adopted for the upper surface sheet 11, the lower surface sheet 12 and the standing pieces 13 at both ends, Kraft paper with a thickness of 0.1 mm is used for the intermediate standing piece 14.
  Further, the top sheet 11, the bottom sheet 12, and the upright pieces 13 on both sides have a surface of 6 × 10.^-3~ 6 × 10^-2Adhesive coating with mm-thick commercial aluminum foil.
  The width of each sheet is 400 to 500 mm for the lower sheet width 12W, the upper sheet width 11W is wider than the lower sheet width 12W by the protruding edges 11E (standard: 20 mm) on both sides, and the standing pieces 13 on both sides are 20 to 20 mm. 40 mm + upper folding surface 10 mm, lower folding surface 10 mm, and intermediate standing piece 14 is provided with 20-40 mm + each folding surface 10 mm on both sides.
0031]
  Further, as shown in FIG. 4A, the top sheet 11 and the bottom sheet 12 are provided with moisture permeability by making a fine hole h by needling treatment, and the top sheet 11 is further subjected to FIG. 5B. In this manner, air holes O having a diameter of 3 to 5 mm are dispersed and punched.
  Next, the upright pieces 13 on both sides are bent at the bent portion r so that the upper and lower folded curved surfaces 13 ′ are bent outwards, and the intermediate standing piece 14 has the upper folded curved surface 14 ′ and the lower folded curved surface 14. 'Is bent at the bending portion r in the opposite direction, and the upright pieces 13 and 14 are bonded to each other by the bent curved surfaces 13' and 14 'between the upper sheet 11 and the lower sheet 12 whose upper side (surface) is aluminum foil. To do.
  The obtained frame 10 can be made into a three-dimensional form or a laminated form by bending and extending at the bent portions r of the standing pieces 13 and 14.
0032]
  Since the aluminum foil is available in a roll form, the aluminum foil can be attached to each craft paper, the folded surfaces 13 'and 14' can be formed on the upright pieces 13 and 14, and the adhesive to the folded surfaces 13 'and 14'. Application can also be carried out by mechanized means, and if a laminated product obtained by a roll group device (not shown) is cut to a desired length, a laminated frame 10 having a low bulk can be obtained.
  Of course, bending, sticking, and cutting of each sheet material may be performed manually as necessary.
0033]
[Self-standing piece (Fig. 1, Fig. 2)]
  As shown in FIG. 2B, the self-supporting piece 15 has a three-dimensional shape in which the apex angle θ is 40 to 55 ° and is equal in length and includes a flat inclined portion 15 s. .Attaching aluminum foil to the surface of 3 mm thick kraft paper, forming fine holes h to impart moisture permeability, and further distributing a sheet material having 3 to 5 mm diameter air holes O dispersed therein to the top 15 t and It is formed by bending at the bottom 15b.
0034]
  Accordingly, the self-supporting piece 15 can be expanded and contracted in an accordion shape in the width direction, and the dimension from the top 15t to the bottom 15b of the inclined portion 15s1 side is self-supporting in the air space S of the frame 10 as shown in FIG. When the piece 15 is inserted and both ends 15E come into contact with both side corner ends SE, the height SH of the space S and the dimension between the bottom portions 15b in order to balance the brace function and the strut function with the inclined portion 15s. PL is substantially the same (PL / SH = 0.8 to 1), and the top 15t and the bottom 15b are in contact with the top sheet 11 and the bottom sheet 12, respectively, and the width SW and the height SH of the air space S Decide according to.
0035]
[Production of heat shield]
[Example 1 (FIGS. 1 and 2)]
  A separately prepared self-supporting piece 15 is inserted as a three-dimensional shape into each air layer space S of the prepared frame 10.
  In this case, if it is appropriate to determine the width 15W of the free-standing piece 15, the size of the inclined portion 15s, and the apex angle θ with respect to the width SW and the height SH of the space S, both side ends 15E of the free-standing piece 15 are The top edge 15t abuts on the upper surface sheet 11 and the lower part 15b abuts on the lower surface sheet 12 to hold the upper surface sheet 11 and the lower surface sheet 12 in a flat form. In this state, the frame corner end SE and the self-supporting one end 15E are fixed with the adhesive Ad.
0036]
  If the apex angle θ is 40 to 55 °, the distance PL between the bottom portions 15b is the same as or slightly smaller than the height dimension SH of the air space S, so Many tops 15t can be arranged, and it is configured to satisfy interference suppression with respect to air flow in the air space S and to exhibit the strut function and the brace function, and each inclined part 15s is also a flat surface, and the buckling resistance becomes large. Although it is thin and light kraft paper, it has a strong and sufficient support function.
0037]
  In this case, there is a slight error in the selection of the dimensions of the self-supporting piece 15 with respect to the frame 10, and even if the self-supporting piece top portion 15t slightly lifts the upper surface sheet 11, the upper surface sheet 11 slightly floats from the top portion 15t. Even if it becomes a state, the self-supporting piece 15 should just hold | maintain the flame | frame 10 in a solid form.
0038]
  However, in order for the inclined portion 15s of the self-supporting piece 15 to preferably exhibit the brace and support action and to prevent the self-supporting piece 15 from being detached from the frame 10, the self-supporting piece end 15E is fixed to the lower surface sheet 12. Preferably, if the end portion 15E is in contact with the corner end portion SE, even if the end portion 15E is subjected to the expansion stress by the pressing force to the top portion 15t, the expanding slide of the end portion 15E is the standing piece 13. , 14 is blocked, and the free-standing piece 15 exhibits a brace function and a column function, so that the end 15E and the corner end SE can be fixed by a point adhesion that prevents the free-standing piece 15 from sliding and pulling out. It is.
0039]
  In addition, when the size of the self-supporting piece 15 with respect to the frame 10 is selected and the self-supporting piece top portion 15t and the lower surface of the upper surface sheet 11 are separated and the frame 10 may tilt, the self-supporting piece top portion 15t is The top sheet 11 or the bottom sheet 12 and the top part 15t or the bottom part 15b of the self-supporting piece may be fastened by a conventional fixing means such as an adhesive or a stapler.
0040]
[Example 2 (FIG. 3)]
  3A and 3B show the bottom sheet 12 of the heat shielding material 1 obtained in Example 1 provided with a hard urethane foam heat insulating material 2 on the bottom surface, (A) is a perspective view, and (B) is B- of (A). B sectional drawing and (C) are the exploded perspective views of each component.
  The heat shielding material of Example 1 is a kraft paper in which the upper surface sheet 11, the lower surface sheet 12, the upright piece 13, and the free standing piece sheet of the frame 10 are 0.3 mm thick, and the apex angle θ of the free standing piece is 40 to 55 °. In addition, the heat insulating material 1 in which the height SH of the air space S is selected to be 20 to 30 mm has a foaming pressure of 0.5 kg / cm when the rigid urethane foam is injected.²Therefore, the heat shielding material 1 can be molded as a middle core material, and the lower surface of the lower surface sheet 12 can be filled with rigid urethane foam and integrated with foam.
0041]
  Further, as shown in FIG. 8A, when the heat shield 1 is the same length as the heat insulation length 2L only for the lower sheet length 12L, the auxiliary frame is brought into contact with both ends of the heat shield 1 and the heat shield 1 is attached. Filling and foaming the heat insulating material can be achieved by using the core material.
  Of course, the frame 10 is laminated by the fall of the upright pieces 13, 14, the heat insulating material is assembled, and the rigid urethane foam and the lower surface sheet 12 are integrated, and then, as in Example 1, the freestanding pieces 15 are placed in the frame 10. May be inserted and fixed.
0042]
[Performance of heat shield (Fig. 7)]
  As shown in FIG. 7, the inventor placed the heat shield 1 on the heat insulating material 2 in a laboratory without air convection, heated with a heater above the heat shield, and measured the temperature at each part. However, when the air layer a1 above the heat shield is 57.8 ° C., the frame upper surface sheet (aluminum foil) a2 is 51.6 ° C., and the upper space upper layer air a3 of the free standing piece 15 provided with the aluminum foil is 50.degree. The free standing middle layer a4 was 49.8 ° C., the free standing piece lower space a5 was 48.0 ° C., the frame lower surface sheet a6 was 47.4 ° C., and the heat insulating material surface a7 was 47.0 ° C.
  That is, although it was a simple model test, the heat shielding material 1 can block 57.8 ° C. of the upper air layer a1 to 47.0 ° C. of the heat insulating material surface a7 by 10 ° C. or more, and the upper part of the self-supporting piece. Since the space a3 and the lower space a5 have a temperature difference of 2 ° C., it can be confirmed that the inclined portion 15s (FIG. 1) of the self-supporting piece also has an effective heat ray reflecting action.
0043]
[Modification]
  In the frame 10, if the width 11W of the upper surface sheet 11 and the width 12W of the lower surface sheet 12 are the same and integrated with the board-shaped heat insulating material 2 having the same width and length, the heat insulating material side between the wooden frames It is also possible to fit from the heat shield material side.
  Further, as shown in FIG. 6A, the self-standing piece 15 is bent and formed into a trapezoidal cross section, and even if the top portion 15t and the bottom portion 15b are planar, the inclined portion 15s plays the role of a brace and strut. As shown in B), even if the cross-sectional shape of the inclined portion 15s bulges from the bottom portion 15b into a warhead shape, the three-dimensional shape of the frame 10 can be maintained.
  However, in the case of FIG. 6 (B), since the anti-buckling force due to pressing is not sufficient, it is necessary to carry out the filling and integral molding of the heat insulating material before the assembly of the self-supporting piece 15, and the self-supporting It is impossible to fold or extend the piece during storage, and the self-standing piece itself is not suitable for craft paper production, and plastic molding is suitable.
0044]
[Use of heat shield 1 (FIGS. 8, 9, 10)]
  The heat insulating material 1 in which a three-dimensional shape is maintained by inserting a self-supporting piece 15 into the air space S of the frame 10 to prevent lateral displacement and sagging of the top sheet 11 is disposed at a suitable position as a single board-like member. Is possible.
  For example, as shown in FIG. 9, a heat insulating material 2 such as a conventional glass wool is laid on a ceiling finishing material 4 stretched by a ceiling base material 3 in the attic, and the surface of the heat insulating material is shielded against heat according to the present invention. The covering can be protected by placing the material 1.
0045]
  FIG. 10 is an explanatory view of a contact arrangement form of the heat shield 1 having the upper sheet 11 provided with protruding edges 11E on both side edges and wider than the lower sheet 12, and the contact position between the heat shields 1 is concave. Even in the case (A), the protruding edges 11E of the top sheet overlap with each other, and complete covering of the surface of the heat insulating material 2 with the top sheet 11 provided with the radiant heat reflection layer Re can be achieved.
  Further, as shown in FIG. 10B, even when the contact positions of the heat shielding materials are convex surfaces, the overlap of the upper surface sheet protruding edges 11E only expands, and the complete covering of the surface of the heat insulating material 2 is achieved. Can be achieved.
0046]
  Further, FIG. 10C shows a case where the side edges of the lower surface sheet 12 cannot be brought into contact with each other because a member such as the horizontal member 30 is interposed at the contact position between the heat shielding materials. Projecting edges 11E from both sides of the sheet 11 are gaps between the lower sheet 12BetweenCover.
  In addition, when the upper surface sheet 11 includes the protruding edge 11E, the heat insulating material 2 can be covered on the entire surface even in the form in which the heat insulating material 1 has a slight dimensional interval. Becomes easy.
0047]
  Further, when the top sheet 11 and the bottom sheet 12 are in the heat shielding material 1 having the same width, they can be fitted into the arrangement space from the top surface or the back surface as if they were one cross-sectional square board material. Even in places where workers cannot enter, such as the attic of a narrow space after the roof is laid, it can be fitted from below.
  Further, the heat insulating material 1 in which the heat insulating material 2 is integrated with the lower surface sheet 12 is difficult to fix the heat insulating material 1 because the board-shaped heat insulating material 2 has shape retention and can be nailed and bonded to the surface. It is advantageous for tensioning in any place.
0048]
【The invention's effect】
  The heat shielding material 1 has the top portion 15t and the bottom portion 15b of the self-supporting piece inserted into the air layer space S between the upper surface sheet 11 and the lower surface sheet 12 of the frame 10, and supports the upper and lower sheets 11, 12 in contact with each other. Since the upper space St and the lower space Sb having a three-dimensional shape of the self-supporting piece assures the air flow in the air layer space S, the surface of the heat insulating material 2 can be applied like a board-shaped member having shape retention, and is shielded. The radiant heat reflecting layer Re of the top sheet 11 of the heat material 1 reflects heat rays to prevent radiant heat heating to the heat insulating material, and the air flow in the longitudinal direction in the heat shield material guaranteed by the self-supporting piece 15 causes the heat shield material to In order to prevent the temperature of the air from increasing, the heat shield 1 deals with radiant heat transfer and convective heat transfer among the heat transfer from the outside of the heat shield 1 to the heat insulator 2. Reduce heating and heat storage.
0049]
  Moreover, since the sheet 11 that defines the upper surface of the air space S and the free-standing pieces 15 are scattered with the air holes O over the entire surface, all the air inside the heat shield 1 communicates with the air above the heat shield. It becomes possible, and the heat and moisture inside the heat shield can be leveled and discharged, and the weather resistance of the heat shield 1 is improved..
  Also,Since the heating of the heat insulating material 2 can be suppressed, the thickness of the heat insulating material 2 can be made thinner than that of the conventional heat insulating material, so that the heat storage of the heat insulating material can be suppressed and the heat insulating structure thickness in which the heat insulating material 2 is superimposed on the heat insulating material 1 is also conventional. It is possible to reduce the thickness to only two layers of the heat insulating material, and a high-performance heat insulating structure with high heat insulation and low heat storage can be implemented without causing an increase in the heat insulating structure thickness.
0050]
  In addition, since the constituent material of the frame 10 (upper surface sheet, lower surface sheet, upright piece) and the constituent material of the self-supporting piece 15 are also sheet materials and are easy to bend and bond, the aluminum foil can be bonded or bent. And construction such as mutual bonding is easy.
  Moreover, the self-supporting piece 15 is an insert into the frame 10, and the frame 10 can also be stored and transported in a laminated state by overturning, so that a heat shield can be assembled at a necessary time. Easy to manufacture and manage as a heat shield.
0051]
  During use as the heat shield 1, the self-supporting piece 15 supports and holds the top sheet 11 and the bottom sheet 12 at the top 15t and the bottom 15b to guarantee a three-dimensional form. Therefore, the top 15t and bottom of the self-supporting piece 15 are used. The slanted portion 15s between 15b functions as a post and brace, and exhibits a strong and sufficient three-dimensional shape holding force despite being composed of a sheet material such as kraft paper.
  Further, due to the moisture permeability of the lower surface sheet 12, moisture from the heat insulating material 2 can be removed by air flow through the lower space Sb of the air layer space S, and the function deterioration due to moisture absorption of the heat insulating material 2 can be prevented.
0052]
  Further, since the self-supporting piece 15 also includes the radiant heat reflection layer Re on the surface, even a slight heat ray transmitted through the radiant heat reflection layer Re of the top sheet 11 is prevented from being reflected in the upper space St of the self-supporting piece 15, Discharged by flowing air.
  Therefore, the heat shielding material 1 can hold a solid three-dimensional form by the self-supporting piece 15, and in addition to the radiant heat (heat ray) heating prevention by the top sheet 11, further, a secondary heat ray heating prevention by the self-supporting piece is added, Arrangement on the surface of the heat insulating material 2 is easy, and it has a sufficient radiant heat heating prevention function.
[0053]
  In addition, since the upper sheet width 11W of the frame 10 of the heat shield 1 is larger than the other sheet widths 12W, the arrangement in which the upper sheet side edges overlap with each other with the upper sheet side edge overlapped is also possible. It is also possible to arrange the form in which the edges of the bottom sheet side are in contact with each other, and the bottom sheet side edges are spaced apart from each other..
  Further, the lower surface sheet 12 of the frame 10 of the heat shield 1 protrudes from the upper surface sheet 11 at both ends. Since the extension L20 is provided, even if both ends of the heat shield 1 are placed in contact with the partition material or the wall, the gap L10 can be formed by the extension L20, and the air is discharged from the heat shield to the outside. Can guarantee.
[Brief description of the drawings]
1A and 1B are explanatory views of a heat shield material of the present invention, in which FIG. 1A is a perspective view, and FIG. 1B is a cross-sectional view taken along line BB in FIG.
FIGS. 2A and 2B are explanatory views of a heat shield material according to the present invention, in which FIG. 2A is a perspective view of a self-supporting piece inserted state, and FIG. 2B is an exploded view of the frame 10 and the self-supporting piece 15 in the cross section of FIG. It is sectional drawing.
3A and 3B are explanatory views of a heat insulating material-integrated heat shielding material according to the present invention, in which FIG. 3A is a perspective view, FIG. 3B is a cross-sectional view taken along line BB in FIG. It is.
4A and 4B are explanatory diagrams of a frame according to the present invention, in which FIG. 4A shows a state in the middle of standing, and FIG. 4B shows a standing state.
5A and 5B are perspective views of a constituent material of the present invention, in which FIG. 5A is a diagram of a self-supporting piece, and FIG. 5B is a diagram of a top sheet.
6A and 6B are front views of modified examples of different self-supporting pieces 15 respectively.
FIG. 7 is a schematic explanatory diagram of a performance test of the heat shield material of the present invention.
8A and 8B are explanatory diagrams of the heat insulating material-integrated heat shielding material of the present invention, in which FIG. 8A is a perspective view of a heat shielding material, and FIG.
FIG. 9 is a perspective view illustrating the use of the heat shield material of the present invention for a ceiling heat insulating structure.
FIGS. 10A and 10B are explanatory views of the usage of the heat shield material according to the present invention, wherein FIG. 10A shows a case where the contact position of the heat shield material is a concave surface, and FIG. 10B shows a case where the contact position is a convex surface. (C) is a figure which shows the case where a horizontal member exists in a contact position.
11A and 11B are perspective views of a conventional example, in which FIG. 11A is a schematic view, and FIG. 11B is a diagram showing a fixing form of a heat shield.
[Explanation of symbols]
1: heat shielding material, 2: heat insulating material, 3: ceiling base material,
4: Finishing material for ceiling, 10: Frame,
11: top sheet, 12: bottom sheet,
13, 14: Standing piece, 13 ', 14': Folded curved surface, 15: Self-standing piece,
15t: top part, 15b: bottom part, 15s: inclined part,
15E: end, h: fine hole (pinhole),
O: air hole, Re: radiant heat reflective layer (aluminum foil),
S: air layer space, SE: corner edge,
St: Upper space, Sb: Lower space

Claims

A frame (10) made of a sheet material, and a self-standing piece (15) made of a sheet material that is inserted and held in the air space (S) in the frame (10) to hold the three-dimensional form of the frame (10), The frame (10) includes a plurality of sheets including at least an upper surface sheet (11) and a moisture-permeable lower surface sheet (12), at least an upper surface sheet (11) having a radiant heat reflection layer (Re) on the surface, and is made of a sheet material. The free standing piece (13, 14) is connected to form an air layer space (S) that allows air to flow in the longitudinal direction. The free standing piece (15) has a radiant heat reflecting layer (Re) on its surface. And a top portion (15t), a bottom portion (15b) and an intermediate inclined portion (15S) for contacting and supporting the upper surface sheet (11) and the lower surface sheet (12), between the width direction both end portions (15E), Shape parallel to the longitudinal direction Is obtained by bending three-dimensional, the sheet defining the upper surface of the air layer space (S) (11), and free-standing piece (15), heat shield the internal air flow heat shielding member (1) (1) A heat insulating material for protecting a heat insulating material in a house, in which air holes (O) for air communication for enabling air communication to be located above are scattered.

A frame (10) made of a sheet material, and a self-standing piece (15) made of a sheet material that is inserted and held in the air space (S) in the frame (10) to hold the three-dimensional form of the frame (10), The frame (10) is a plurality of sheets including at least the upper surface sheet (11) and the moisture-permeable lower surface sheet (12), at least the upper surface sheet (11) having a radiant heat reflection layer (Re) on the surface, and the lower surface sheet. (12) has protruding extensions (L20) for forming a gap (G10) that guarantees air conduction in the air space (S) at both ends of the heat shield (1) at both ends in the longitudinal direction. And an air layer space (S) in which air can flow in the longitudinal direction is formed by connecting with standing upright pieces (13, 14) made of sheet material, and the free standing piece (15) has radiant heat on the surface. A reflective layer (Re), and A top part (15t), a bottom part (15b) and an intermediate inclined part (15S) for abutting and supporting the face sheet (11) and the bottom sheet (12) are provided, and parallel to the longitudinal direction between the width direction both end parts (15E). A heat insulating material for protecting a heat insulating material of a house, which is formed into a three-dimensional shape.

The heat shielding material according to claim 1 or 2, wherein the frame (10) has a top sheet width (11W) larger than another sheet width (12W) .

The heat shielding material according to any one of claims 1 to 3, wherein all the sheets (11, 12), the standing pieces (13, 14), and the self-standing pieces (15) of the frame (10) have moisture permeability.

The heat shield according to any one of claims 1 to 4, wherein the self-supporting piece (15) is fixed in the space (S) of the frame (10).

The heat insulating material according to any one of claims 1 to 5, wherein the self-supporting one end (15E) is fixed to a corner end (SE) of the air space (S).

The heat insulating material according to any one of claims 1 to 6, wherein the bottom sheet (12) of the frame (10) integrally holds the board-like heat insulating material (2).