M443546 -五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種軟式立體口罩，特別是指一種順 應使用纟的臉冑輪廟形成立體罩覆造型的軟式立體口罩。 【先前技術】 參閱圖1與圖2,現有的—軟式立體口罩i具有一供罩 ⑽-使用者1()1 @ 口鼻部的罩體u ’及二相對稱地連接 於該罩體11二相反側的耳掛帶12。 該罩體11是由一貼覆於使用者1〇1皮膚的内罩層⑴ 、一與該内罩層111的形狀相對應且相間隔的外罩層112, 及一夾設阻隔在該内、外軍層⑴、112之間的夾層ιι3所 接合製成，具有一沿該使用者1〇1的鼻樑中段、鼻頭、人中 延伸到其下顆的-順應使用者側臉輪廊形成的弧線接合段 114、 自該孤線接合段114二相反側相對稱地向左右延伸到 該使用者的耳部前緣的一左罩部115及一右罩部116，該左 、右罩部115 ' 116並與該弧線接合段114相配合界定出一 供該使用者ιοί的口鼻容置包覆的罩覆空間117。 該二耳掛帶12是分別連接在該罩體11的左、右罩部 115、 116,並用以套掛在使用者1〇1的雙耳，使該口罩^獲 得定位。 雖然該軟式立體口罩1能透過該罩體11的弧線接合段 114的弧線造型設計，使該左、右罩部ιΐ5、ιΐ6相對該弧 線接合段114被展開時，形成可包覆罩蓋在使用者1〇1的口 鼻邛的錐狀立體型式，進而達到過濾阻隔外部空氣的防護效 3 M443546 果，但貫際使用上仍存有下列缺失： 當該使用者101呼吸時，其呼出的氣體雖然可通過該 罩體11向外排出，但由於該罩體11的阻力相對較大，而使 邛刀呼氣仍會通過該罩體u的上側緣與該使用者的皮 膚之間的間隙向上並向外排出，彳能因此發生干擾使用者 視線的If形，尤其是在冬天或濕氣較大的天氣使用，且 、用者101又有配戴眼鏡時，向上排出的呼氣遇到外部的 冷空氣容易形成白霧狀水氣附著至眼鏡鏡片，而嚴重干擾 使用者101的視線，使現有的軟式立體口罩1無法有效擋 止’孔向上排出’而易形成會干擾視線的白霧狀水氣，導 致配戴使用時的危險性相對較高。 【新型内容】 因此，本新型的目的，是在提供一種能夠有效擋止使 者的呼氣it過口罩上方排出，以防止使用者的視線受到 影響的軟式立體口罩。 於疋本新型軟式立體口罩是供罩覆在一使用者的口 鼻部’包含-罩體單元、一對應該罩體單元設置的導氣片 體，及二連接在該罩體單元二相反側的耳掛帶。 該罩體單元包括沿該使用者的鼻襟中段、鼻頭、人中 延伸到八下顆的-順應使用者的側臉輪廓形成而具有預定 彎曲弧度的弧線分隔條、自該狐線分隔條二相反側相對稱 地向左右延伸到該使用者的耳部前緣的_左側罩體及—右 侧罩體’該弧線分隔條與該左、右侧罩體還相配合界定出 一供使用者的口鼻容置包覆的罩覆空間。 M443546 該導氣月體是對應該罩體單元設置於該罩覆空間内， 以與該罩料元相配合界以―上方㈣的導氣空間，包 括上下相間隔的-與該罩體單元的左、右側罩體的一上側 緣相對齊且相密接的上連接段、_對應該使用者的鼻頭橫 向延伸並與該左、右側罩體相配合界定形成一進氣口的下 游離&，及—分別連接在該上連接段與該下游離段二相反 知之間的側邊段。 m 耳掛帶是分別連接在該罩體單元的左、右側罩體 本新型的有益效果在於：藉由設置該導氣片體，使用 者的呼氣會自該進氣口進人該導氣空間，並受相密接的上 連接段與上側緣擋止而無法向上排出，並分別朝向二側與 通過該罩題單元向外排出，因此，能有效避免使用者的視 線受到呼氣形成的水氣干擾，進而提供較安全舒適的配戴 效果。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之_個較佳實施例的詳細說明中，將可 清楚的呈現。 β參閱圖3與圖4’本新型軟式立體口罩之的一較佳實施 例是供罩覆在-使用者1G2的口鼻部，包含—罩體單元3、 一對應該罩體單元3設置$ „ 一 町导麻1月體4，及二連接在該罩體 早元3二相反側的耳掛帶5。 該罩體單元3包括沿職_ 1()2的鼻射段、鼻頭 M443546 、人中延伸到其下顎的一順應使用者1〇2的側臉輪廓形成 而具有預定彎曲弧度的弧線分隔條31、自該弧線分隔條Μ 二相反側相對稱地向左右延伸到該使用者1〇2的耳部前緣 的一左側罩體32及一右側罩體33，該弧線分隔條31與該 左、右側罩體32、33還相配合界定出一供使用者1〇2的口 鼻容置包覆的罩覆空間30。 其中，該弧線分隔條31具有一對齊該使用者1〇2的鼻 頭，且與該左、右侧罩體32、33呈一體連接的連通段3ιι 、分別自該連通段311向上、向下延伸的一上接合段312及 一下接合段313，且該上、下接合段312、313是分別經熱 壓接合。 、 … 該左 '右側罩體32、33各具有自該弧線分隔條31分 別沿該使用者102的顴骨下緣朝向耳部延伸而呈預定的弧 度的一上側緣321、331、一與該上側緣321、331相間隔並 沿該使用者102的下巴周緣傾斜向上及向其耳部延伸的下 側緣322、332，及一連接在該上、下側緣321、33ι、322 、332之間的旁側緣323、333。 該導氣片體4是對應該罩體單元3設置於該罩覆空間 30内’以與該罩體單元3相配合界定出一上方封閉的導氣 空間40 ’包括上下相間隔的__與該罩體單& 3的左、右側 罩體32、33的上側緣321'331相對齊且相密接的上連接 段、-Μ該使用者1G2的鼻頭橫向延伸並與該左、右 側罩體32、33相配合界定形成一進氣口 的下游離段42 ，及二分別連接在該上連接段41與該下游離段42二相反 端之間的侧邊段43，該二側邊段43是透過多數個相間隔設 置的熱溶接點431分別對應地定位在該罩體單元3的左、 右側罩體32、33的旁側緣323、333上，且該等熱熔接點 431還與該二側邊段43及該罩體單元3的左、右側罩體η 、33相配合界定出至少一個與該導氣空間4〇相連通的通氣 口 430。在泫較佳實施例中，是分別在該二側邊段a形成 二個熱熔接點431使該導氣片體4連接至該左、右側罩體 32、33,及分別與該左、右侧罩體32、33界定出一個通氣 口 430。 較佳地’料體單元3是由透氣的織物材質所製成， 且是由-與該導氣片體4相鄰接的内罩層34、—與該内； 層34形狀相對應且相_的外罩層^，及—夹設阻隔在驾 内、外罩層34、35之間的夾層％所接合製成。在該㈣ 實施例中，是沿該内罩| 34、外罩層35與夾層％的周續 設置多數個緊密相鄰的熱熔.接點37,以使該内罩層34、外 罩層35與夾層36相接合固定。 罩體==是分別連接在該罩體單元3的左 '右· =、=以分別掛戴至使用者102的耳部，㈣ 罩體早70 3獲得定位。 參閱圖4與圖5,製造該罩體單元3時，是先將三相 疊合的織物裁剪成具有預定 撕層35、夹層二:二與形狀的片體型 與内罩層34(見圖4)的前身，並分別 沿的中心線上下端剪出二個尖角狀…01、30: ，中央保_的部分即為㈣線分隔條Η的連通段川 M443546 ，並沿該外罩層35、夾層36與内罩層34的周緣設置熱熔 接點使二層織物相結合固定’其中’該二缺口 301、302分 別是由呈對稱的二上弧形邊3〇3、二下弧形邊3〇4所界定形 成，再分別使該二上弧形邊3〇3及該二下弧形邊3〇4相對 齊接合，就分別形成該弧線分隔條31的上接合段312(見圖 3)及下接合段313(見圖3)〇該二耳掛帶5也是以熱熔壓合 的方式固定至該罩體單元3。在該較佳實施例中，是分別以 設置熱熔接點與熱壓接合的方式，使該罩體單元3定型接 合及使該二耳掛帶5固定，但不應以此限制該罩體單元3 與該二耳掛帶5的接合方式’也可以使用縫合或黏合的方 式’同樣能達到相同的成型與定位效果。 "當使用者102配戴該口罩2時，所呼出的氣體會自該 導氣片體4的下游離段42通過該進氣口 42〇進入該導氣空 間40，再從該導氣片體4二側的通氣口 43〇排出，也有邛 分氣體穿過該罩體單;t 3的内罩層34、夾層％與外罩層 35向外排出，因此’可利用該導氣片體4的上連接段心 該罩體單元3之間的封閉接合結構達到擋止啤氣朝出 的效果。 Κ 值得說明的是，該實施例中的該σ罩2還可包含—讯 置在該罩體單it 3上的輔助排氣單元8。該辅助排氣單元1 的型式可以如圖4所示’並包括多數個沿該罩體單元 左、右側罩體32、33的外側部相間隔地設置的活動荦片81 ’及多數個對應該等活動葉片81貫穿形成於該罩體單 的通氣孔82’每一活勤葦只Μ女曰士 某片81各具有一朝向該狐線分隔條 M443546 罩體單元3相連接的連接段811，及一自該連接段 朝通離該弧線分隔條31的方向延伸，並能相對該通氣 孔82掀起與蓋合的葉片部812、藉此，該使用者他呼出 的部分氣體能通過該等通氣孔82，從該使用者1〇2的臉部 二側向旁邊並向外排出’而能進一步增加該使用者102呼 氣的排出效率’並能有效避免呼氣形成的水氣干擾視線。 此外，該辅助排氣單元8的型式也可以是包括多個分 別石該内罩層34左、右的二外側部相間隔地貫穿設置的内 穿孔（圖未示）的型式。藉此，該使用者ι〇2呼出的部分氣體 成通過_罩層34的内穿孔，再經過透氣性較佳的該夹層 36與該外罩層35向外排出，同樣能增加排氣效率及達到 有效避免水氣干擾視線的情形發生。因此，藉由在該内罩 層34形成該等貫穿的内穿孔(圖未示）也能引導部分呼氣從 該口罩2二旁向外排出。 歸納上述，本新型軟式立體口罩2可獲致下述的功效 及優點，故能達到本新型的目的： 利用對應該罩體單元3設置的導氣片體4，就能藉由該 導氣片體4的結構特色’分別形成擋止呼氣向上排出的屏 障及引導呼氣自其他非向上的路徑或出口排出的通道， 藉此’可有效避免使时1G2的視線受$氣形成的水氣干 ㈣情形L咸少使㈣的困擾與不便’並具有配戴使 用上較安全的優點。 惟以上所述者，僅為本新型之較佳實施例而已，當不 能以此限定本新型實施之範圍，即大凡依本新型申請專利 M443546 範圍及新型說明内容所作之簡單的等效變化與修飾，皆仍 屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一後視的立體示意圖，說明現有的一軟式立體 口罩的型式； 圖2是一側視的使用示意圖’說明該現有軟式立體口 罩罩覆在一使用考的口鼻部的情形； 圖3是一後視的立體示意圖，說明本新型軟式立體口 罩一較佳實施例； 圖4疋一側嗎的使用示意圖，說明該較佳實施例罩覆 在一使用者的口鼻部的情形；及 圖5是一平面展開的示意圖，說明在三片相疊合的織 物裁剪出上下相間隔的二個缺口的情形。 M443546M443546 -5, new description: [New technical field] The present invention relates to a soft three-dimensional mask, in particular to a soft three-dimensional mask that conforms to the use of a scorpion face to form a three-dimensional cover. [Prior Art] Referring to Figures 1 and 2, the conventional - soft three-dimensional mask i has a cover (10) - a user 1 () 1 @ mouth nose cover u ' and two symmetrical connection to the cover 11 Two ear straps 12 on opposite sides. The cover 11 is an inner cover layer (1) attached to the skin of the user 1〇1, an outer cover layer 112 corresponding to the shape of the inner cover layer 111, and a cover layer is disposed therein. The interlayer ιι3 between the outer layers (1) and 112 is joined and has an arc extending along the middle of the bridge of the user, the nose, and the person extending to the lower one - conforming to the arc of the user's side face. The joint section 114, a left cover portion 115 and a right cover portion 116 extending from the opposite sides of the ligation line segment 114 to the left and right sides of the user's ears, symmetrically to the left and right cover portions 115' 116 and cooperate with the arc engaging section 114 to define a covering space 117 for the user's mouth and nose to cover. The two ear straps 12 are respectively connected to the left and right cover portions 115 and 116 of the cover body 11 and are used to be hung on the ears of the user 1〇1 to position the mask. Although the soft three-dimensional mask 1 can pass through the arc design of the arc joint portion 114 of the cover body 11, when the left and right cover portions ι 5, ι 6 are unfolded relative to the arc joint portion 114, a coverable cover can be formed. The conical shape of the mouth and nose of 1〇1, in order to achieve the protection effect of filtering the outside air 3 M443546, but there are still the following defects in the use: When the user 101 breathes, the exhaled gas Although it can be discharged outward through the cover 11, since the resistance of the cover 11 is relatively large, the exhalation of the file still passes through the gap between the upper edge of the cover u and the skin of the user. And it is discharged outwards, so that the If shape can interfere with the user's line of sight, especially in winter or in humid weather, and when the user 101 wears glasses, the exhaled breath is discharged to the outside. The cold air easily forms a white misty water vapor to adhere to the spectacle lens, and seriously interferes with the line of sight of the user 101, so that the existing soft three-dimensional mask 1 cannot effectively stop the 'hole upward discharge' and easily form a white mist that would interfere with the line of sight. steam The risk of wearing it is relatively high. [New content] Therefore, an object of the present invention is to provide a soft three-dimensional mask capable of effectively stopping the exhalation of the wearer over the mask to prevent the user's line of sight from being affected. The new soft three-dimensional mask of the present invention is provided with a cover covering a user's snout 'including-cover unit, a pair of air guide sheets disposed on the cover unit, and two connected to the opposite side of the cover unit Ear straps. The cover unit comprises an arc-shaped partition strip formed along a middle section of the user's nose, a nose, and a person extending to eight underneath, conforming to a side contour of the user, having a predetermined curved curvature, from the fox line divider 2 The opposite side symmetrically extends to the left and right of the front edge of the user's ear _ left side cover and the right side cover body. The arc separation strip cooperates with the left and right side cover bodies to define a user The nose and mouth accommodate the covered cover space. M443546 The air guiding body is disposed corresponding to the cover unit in the covering space to match the covering element with an upper (four) air guiding space, including upper and lower spacing - and the cover unit An upper connecting edge of the left and right side covers and a closely connected upper connecting section, _ corresponding to the user's nose extending laterally and cooperating with the left and right side covers to define a lower free & And - respectively connected to the side section between the upper connecting section and the lower free section. The m ear straps are respectively connected to the left and right side covers of the cover unit. The novel effect of the present invention is that by providing the air guide piece body, the user's exhalation will enter the air guide from the air inlet. The space is blocked by the upper connecting section and the upper side edge, and cannot be discharged upward, and is respectively discharged toward the two sides and through the cover unit, thereby effectively preventing the user's line of sight from being exhaled. Gas interference, which in turn provides a safer and more comfortable wear. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Referring to Figures 3 and 4', a preferred embodiment of the present flexible three-dimensional mask is for covering the snout of the user 1G2, including the cover unit 3, and the pair of cover units 3 „ 一町引麻 January body 4, and two ear straps 5 connected to the opposite side of the cover body on the early 3rd side. The cover unit 3 includes a nasal section along the _ 1 () 2, nose M443546, An arc dividing strip 31 having a predetermined curved curvature formed by a side face contour of the user extending to the lower jaw thereof, extending from the opposite side of the curved dividing strip 相对 to the left and right to the user 1 A left side cover 32 and a right side cover 33 of the front edge of the ear of the cymbal 2, the arc dividing strip 31 cooperates with the left and right side covers 32, 33 to define a nose and mouth for the user 1 〇 2 The covered cover space 30 is accommodated. The arc dividing strip 31 has a connecting portion 3 ιι , respectively, which is aligned with the nose of the user 1 〇 2 and is integrally connected with the left and right covers 32 and 33 An upper joint section 312 and a lower joint section 313 extending upward and downward from the connecting section 311, and the upper and lower joint sections 312, 313 The left and right side covers 32, 33 each have an upper side edge extending from the lower edge of the tibia of the user 102 toward the ear to form a predetermined arc. 321 , 331 , a lower side edge 322 , 332 spaced apart from the upper side edge 321 , 331 and extending upwardly along the circumference of the chin of the user 102 and extending toward the ear portion thereof, and a connection to the upper and lower side edges 321 . a side edge 323, 333 between 33, 322, and 332. The air guide body 4 is disposed in the cover space 30 corresponding to the cover unit 3 to define a fit with the cover unit 3 The upper enclosed air guiding space 40' includes an upper connecting section which is spaced apart from the upper and lower sides, and an upper connecting section which is in close contact with the upper side edge 321 '331 of the left and right side covers 32, 33 of the cover body & The nose of the user 1G2 extends laterally and cooperates with the left and right covers 32, 33 to define a lower free section 42 forming an air inlet, and two are respectively connected to the upper connecting section 41 and the lower free section 42 a side section 43 between opposite ends, the two side sections 43 are through a plurality of spaced apart hot melt contacts 431 Correspondingly positioned on the side edges 323, 333 of the left and right side covers 32, 33 of the cover unit 3, and the hot-melt joints 431 and the two side sections 43 and the cover unit 3 The left and right covers η, 33 cooperate to define at least one vent 430 that communicates with the air guiding space 4 。. In the preferred embodiment, two heat fusions are formed in the two side segments a, respectively. A point 431 connects the air guide piece 4 to the left and right side covers 32, 33, and defines a vent 430 with the left and right side covers 32, 33, respectively. Preferably, the body unit 3 is made of a breathable fabric material and is composed of an inner cover layer 34 adjacent to the air guide body 4, and a shape corresponding to the inner layer 34. The outer cover layer of the _ is formed by joining the interlayers between the inner and outer cover layers 34 and 35. In the (4) embodiment, a plurality of closely adjacent hot melt contacts 37 are provided along the inner cover 34, the outer cover layer 35 and the interlayer %, so that the inner cover layer 34 and the outer cover layer 35 are The interlayer 36 is joined and fixed. The cover == is connected to the left 'right · =, = respectively of the cover unit 3 to be hung to the ear of the user 102, and (4) the cover is positioned 70 3 early. Referring to FIG. 4 and FIG. 5, when the cover unit 3 is manufactured, the three-phase laminated fabric is first cut into a sheet type and an inner cover layer 34 having a predetermined tear layer 35, a sandwich two: two and a shape (see FIG. 4) The predecessor, and cut the two sharp corners along the center line along the center line...01, 30: The part of the central guarantee _ is the connecting section of the (4) line divider strip, M443546, along the outer cover layer 35, The sandwiching layer 36 and the periphery of the inner cover layer 34 are provided with heat fusion joints to fix the two layers of fabrics. The two notches 301 and 302 are respectively formed by symmetrical two upper curved edges 3〇3 and two lower curved edges 3 The upper joint portion 312 is formed by defining the two upper curved edges 3〇3 and the two lower curved edges 3〇4, respectively, to form the upper joint portion 312 of the arc dividing strip 31 (see FIG. 3). And the lower joint section 313 (see FIG. 3), the two ear straps 5 are also fixed to the cover unit 3 by heat fusion bonding. In the preferred embodiment, the cover unit 3 is fixedly engaged and the two ear straps 5 are fixed by means of providing hot-melt joints and thermocompression bonding, respectively, but the cover unit should not be limited thereby. 3 The way of joining the two ear straps 5 can also be achieved by stitching or bonding. The same molding and positioning effect can be achieved. " When the user 102 wears the mask 2, the exhaled gas will enter the air guiding space 40 from the lower free section 42 of the air guiding piece 4 through the air inlet 42 and then from the air guiding piece. The vents 43 on both sides of the body 4 are discharged, and some gas is passed through the cover; the inner cover layer 34, the interlayer % of the t 3 and the outer cover layer 35 are discharged outward, so that the air guide piece 4 can be utilized. The upper joint section has a closed joint structure between the shell units 3 to prevent the beer from coming out. It should be noted that the sigma mask 2 in this embodiment may further comprise an auxiliary venting unit 8 that is responsive to the hood unit it 3 . The auxiliary exhaust unit 1 may be of a type as shown in FIG. 4 and includes a plurality of movable flaps 81' disposed at intervals along the outer portions of the left and right side covers 32, 33 of the cover unit, and a plurality of corresponding ones. The movable blade 81 penetrates through the vent hole 82 ′ formed in the cover body. Each live 苇 苇 曰 某 某 某 某 某 某 某 某 某 某 某 某 某 某 某 某 某 , , , , , , , , , , , , , , , , , 811 811 811 811 And extending from the connecting section in a direction away from the arc dividing strip 31, and being capable of lifting and closing the blade portion 812 with respect to the venting hole 82, whereby a portion of the gas exhaled by the user can pass through the venting holes 82. The side of the face of the user 1 〇 2 is discharged sideways and outwards to further increase the discharge efficiency of the exhalation of the user 102 and can effectively prevent the moisture formed by the exhalation from interfering with the line of sight. Further, the type of the auxiliary exhaust unit 8 may be a type including an inner perforation (not shown) in which a plurality of outer stones of the inner and outer layers of the inner cover layer 34 are spaced apart from each other. Thereby, a part of the gas exhaled by the user ι 2 is passed through the inner perforation of the cover layer 34, and then discharged through the interlayer 36 and the outer cover layer 35 which are better in gas permeability, which can also increase the exhaust efficiency. Achieving an effective situation to avoid moisture interference with the line of sight. Therefore, part of the exhalation can be guided to the outside of the mask 2 by forming the inner perforations (not shown) in the inner cover layer 34. In summary, the present soft three-dimensional mask 2 can achieve the following functions and advantages, so that the object of the present invention can be achieved: by using the air guide body 4 corresponding to the cover unit 3, the air guide sheet can be used The structural features of 4' respectively form a barrier that blocks the exhalation and discharges, and a channel that guides exhalation from other non-upward paths or exits, thereby effectively preventing the 1G2 line of sight from being trapped by the gas. (4) The situation L is less troublesome and inconvenient (4) and has the advantage of being safer to wear. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification of the scope and novel description of the new patent application M443546. , are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rear view showing a type of a conventional soft three-dimensional mask; FIG. 2 is a side view showing a schematic view of the conventional soft three-dimensional mask covered with a test mouth. FIG. 3 is a rear perspective view showing a preferred embodiment of the soft three-dimensional mask of the present invention; FIG. 4 is a schematic view showing the use of the side of the present invention, illustrating that the preferred embodiment is covered by a user. The case of the snout; and Fig. 5 is a plan view of a plane unfolding, illustrating the case where the two sheets of the folded fabric are cut into two notches spaced apart from each other. M443546
2 ·. 3 ·· 30. 31 · 311 312 313 32·· 321 322 323 33·· 33 1 332 333 34·. 35.. 36·· 301 【主要元件符號說明】 軟式立體口罩 罩體單元 罩覆空間 弧線分隔條 連通段 上接合段 下接合段 左側罩體 上側緣 下側緣 旁側緣 右側罩體 上側緣 下側緣 旁側緣 内罩層 外罩層 夾層 缺口 302 .......缺口 303 .......上弧形邊 304 ·.··.···下弧形邊 4 ..........導氣片體 40 .........導氣空間 41 .........上連接段 42 .........下游離段 420 .......進氣口 43 .........側邊段 431 .......熱熔接點 430 .......通氣口 5 ..........耳掛帶 8 ..........輔助排氣單元 81.........活動葉片 811 .......連接段 812 .......葉片部 82····••…通氣孔 102.......使用者 112 ·· 3 ·· 30. 31 · 311 312 313 32·· 321 322 323 33·· 33 1 332 333 34·. 35.. 36·· 301 [Description of main component symbols] Soft three-dimensional mask cover unit cover Space arc divider strip connecting section upper joint section lower joint side upper side upper edge lower side edge side edge right side cover upper side edge lower side edge side edge inner cover layer outer cover layer interlayer gap 302 ....... gap 303 .......Upper curved edge 304 ········Arced edge 4 .......... Air guiding piece 40 ......... Air guiding space 41 ... ... upper connecting section 42 ... ... lower free section 420 ... ... air inlet 43 ......... Side section 431 .......hot-melt joint 430 ....... vent 5 ..... ear strap 8 .......... auxiliary Exhaust unit 81.........moving blade 811.......connecting section 812.......blade part 82····••... vent 102.... ...user 11