JP6230483B2

JP6230483B2 - Gas supply mask device

Info

Publication number: JP6230483B2
Application number: JP2014105147A
Authority: JP
Inventors: 松原　一雄; 一雄松原; 松原　照巳; 照巳松原; 小林　健治; 健治小林; 心一小林
Original assignee: Atom Medical Corp
Current assignee: Atom Medical Corp
Priority date: 2014-05-21
Filing date: 2014-05-21
Publication date: 2017-11-15
Anticipated expiration: 2034-05-21
Also published as: JP2015217242A

Description

本発明は、マスク装着者の頭部に装着されることができるマスク本体と、上記マスク装着者の顔面と上記マスク本体との間に存在するガス類導入空間に酸素ガスなどのガス類を導入することができるガス類導入用開口とを備えているガス類供給用マスク装置に関するものである。 The present invention introduces a gas such as oxygen gas into a mask body that can be worn on the mask wearer's head and a gas introduction space that exists between the mask wearer's face and the mask body. The present invention relates to a gas supply mask device having a gas introduction opening that can be used.

上述のような構成を備えている酸素マスク装置は、図６に示すように、従来から知られている。そして、この図６に示す従来の酸素マスク装置８１は、図１〜図５に示す本発明の一実施例における酸素マスク装置１とは、以下に記述する点が相違している。すなわち、従来の酸素マスク装置８１においては、第１のコネクタ８２の軸心がほぼ上下方向に延在するように、この第１のコネクタ８２がマスク本体８３に取付けられている。そして、第２のコネクタ８４の軸心がほぼ上下方向に延在するように、この第２のコネクタ８４がほぼ円筒状に構成されている。このために、ガス供給用チューブ８５からほぼ上方に向って上昇する酸素ガスは、第３のコネクタ８６をほぼ上方に向って上昇してから、第２のコネクタ８４に導入される。また、この第２のコネクタ８４に導入された酸素ガスは、第１のコネクタ８２を上昇するので、この第１のコネクタ８２の比較的大きな上端開口８７から周囲に拡散しつつ、マスク本体８３内を上昇する。したがって、マスク装着者９１は、鼻９２の下方付近に流動してきた酸素ガスを、鼻孔から比較的容易に吸引することができる。なお、符号８８は、本発明による酸素マスク装置１における３枚の第１の花弁部２５にそれぞれ相当する３本の開孔８８である。 An oxygen mask device having the above-described configuration is conventionally known as shown in FIG. The conventional oxygen mask device 81 shown in FIG. 6 is different from the oxygen mask device 1 in one embodiment of the present invention shown in FIGS. 1 to 5 in the following points. That is, in the conventional oxygen mask device 81, the first connector 82 is attached to the mask body 83 so that the axial center of the first connector 82 extends substantially in the vertical direction. And this 2nd connector 84 is comprised by the substantially cylindrical shape so that the axial center of the 2nd connector 84 may extend in the up-down direction substantially. For this reason, oxygen gas that rises substantially upward from the gas supply tube 85 rises substantially upward from the third connector 86 and is then introduced into the second connector 84. Further, since the oxygen gas introduced into the second connector 84 rises up the first connector 82, the oxygen gas is diffused from the relatively large upper end opening 87 of the first connector 82 to the periphery, and the inside of the mask main body 83. To rise. Therefore, the mask wearer 91 can relatively easily suck the oxygen gas flowing near the lower portion of the nose 92 from the nostril. Reference numeral 88 denotes three openings 88 corresponding to the three first petal portions 25 in the oxygen mask device 1 according to the present invention.

しかし、従来の酸素マスク装置８１の場合には、第１のコネクタ８２の上端開口８７がこの第１のコネクタ８２の内周開孔（換言すれば、貫通孔）８９と実質的に同一の孔径を有している。このために、上端開口８７からマスク本体８３内に流入する酸素ガスは、マスク本体８３内のほぼ全体に同様に行き渡るおそれがある。したがって、マスク装着者９１が鼻孔から上記酸素ガスを適切に吸引するためには、上記酸素ガスをマスク本体８３内に比較的多量に供給する必要がある。このために、マスク本体８３がマスク着用者９１の顔面９３に良好にはフィットしていないときには、マスク本体８３内を上昇してきた酸素ガスが、マスク本体８３の上端付近から流出して、マスク着用者９１の目９４の方に流れ着いてしまうおそれがある。この結果、マスク着用者９１の目９４が乾いた状態になるおそれがあるので、マスク着用者９１が目９４に不快感を持つおそれがある。 However, in the case of the conventional oxygen mask device 81, the upper end opening 87 of the first connector 82 has substantially the same hole diameter as the inner peripheral opening (in other words, through hole) 89 of the first connector 82. have. For this reason, there is a possibility that the oxygen gas flowing into the mask main body 83 from the upper end opening 87 spreads over almost the entire inside of the mask main body 83 in the same manner. Therefore, in order for the mask wearer 91 to appropriately suck the oxygen gas from the nostril, it is necessary to supply the oxygen gas into the mask body 83 in a relatively large amount. For this reason, when the mask main body 83 is not well fitted to the face 93 of the mask wearer 91, the oxygen gas rising in the mask main body 83 flows out from the vicinity of the upper end of the mask main body 83 and wears the mask. There is a risk that it will flow toward the eyes 94 of the person 91. As a result, there is a possibility that the eyes 94 of the mask wearer 91 will be in a dry state, so that the mask wearer 91 may be uncomfortable with the eyes 94.

本発明は、従来の酸素マスク装置８１における上述のような欠点を、比較的簡単な構成でもって、効果的に是正し得るようにしたものである。 According to the present invention, the above-described drawbacks in the conventional oxygen mask device 81 can be effectively corrected with a relatively simple configuration.

本発明は、その第１の観点によれば、マスク装着者の頭部に装着されることができるマスク本体と、上記マスク装着者の顔面と上記マスク本体との間に存在するガス類導入空間にガス類を導入することができるガス類導入用開口を有する錐形状部材とを備えているガス類供給用マスク装置において、上記錐形状部材は、平均的な体型および平均的な頭部形状を有するマスク装着者が上記マスク本体を正しく装着している時に、上記マスク装着者の鼻よりも低い位置に配置されると共に、上記ガス類が上記マスク装着者の鼻孔の下方に向かうように上記マスク本体内部に斜め上向きに突出するよう構成されており、上記ガス類導入用開口は、上記錐形状部材の頂部に形成されており、上記マスク本体が水平面上に表向きに載置されているマスク載置状態において、上記ガス類導入用開口が向いている方向と上記水平面とが成す第１の角度が、上記マスク本体を真横から見て、３０°〜６０°の範囲（好ましくは、３５°〜５５°の範囲、さらに好ましくは、４０°〜５０°の範囲）であることを特徴とするガス類供給用マスク装置に係るものである。そして、本発明の上記第１の観点の第１の態様によれば、上記マスク載置状態において、上記ガス類導入用開口が向いている上記方向と上記マスク本体を真上から見て上記マスク本体を左右に二等分する二等分中心線との成す第２の角度が、上記マスク本体を真上から見て、０°〜１５°の範囲（好ましくは、０°〜１０°の範囲、さらに好ましくは、０°〜５°の範囲）である。 According to the first aspect of the present invention, a mask main body that can be worn on the mask wearer's head, and a gas introduction space that exists between the mask wearer's face and the mask main body. In the gas supply mask device comprising a cone-shaped member having a gas-introducing opening capable of introducing gas into the gas- conducting mask device, the cone-shaped member has an average body shape and an average head shape. When the mask wearer having the mask wears the mask body correctly, the mask wearer is disposed at a position lower than the nose of the mask wearer, and the gas is directed downward of the nose of the mask wearer. is configured so as to project obliquely upward inside the body, the gases inlet orifice, said conical shape is formed on top of the member, a mask the mask body is placed face up on a horizontal surface In the installed state, the first angle formed by the direction in which the gas introduction opening faces and the horizontal plane is in the range of 30 ° to 60 ° (preferably, 35 ° to The gas supply mask apparatus is characterized by being in the range of 55 °, more preferably in the range of 40 ° to 50 °. And according to the 1st aspect of the said 1st viewpoint of this invention, the said mask sees the said direction and the said mask main body from which the said gas introduction opening has faced from right above in the said mask mounting state. A second angle formed by a bisector center line that bisects the main body to the left and right is in a range of 0 ° to 15 ° (preferably in a range of 0 ° to 10 ° when the mask main body is viewed from directly above. More preferably, it is in the range of 0 ° to 5 °.

また、本発明は、その第２の観点によれば、マスク装着者の頭部に装着されることができるマスク本体と、上記マスク装着者の顔面と上記マスク本体との間に存在するガス類導入空間にガス類を導入することができるガス類導入用開口を有する錐形状部材とを備えているガス類供給用マスク装置において、平均的な体型および平均的な頭部形状を有するマスク装着者がマスク本体を正しく装着して真正面を向いているマスク正装着状態において、上記錐形状部材は、上記マスク装着者の鼻よりも低い位置に配置されると共に、上記ガス類が上記マスク装着者の鼻孔の下方に向かうように上記マスク本体内部に斜め上向きに突出するよう構成されており、上記ガス類導入用開口は、上記錐形状部材の頂部に形成されており、上記マスク正装着状態において、上記ガス類導入用開口が向いている方向と上記真正面を向いている仮想の垂直面とが成す第３の角度が、上記マスク本体を真横から見て、３０°〜６０°の範囲（好ましくは、３５°〜５５°の範囲、さらに好ましくは、４０°〜５０°の範囲）であることを特徴とするガス類供給用マスク装置に係るものである。そして、本発明の上記第２の観点の第１の態様によれば、上記マスク正装着状態において、上記ガス類導入用開口が向いている上記方向と上記マスク本体を真正面から見て上記マスク本体を左右に二等分する二等分中心線との成す第４の角度が、上記マスク本体を真正面から見て、０°〜１５°の範囲（好ましくは、０°〜１０°の範囲、さらに好ましくは、０°〜５°の範囲）である。 According to a second aspect of the present invention, there is provided a mask body that can be worn on the head of the mask wearer, and gases present between the face of the mask wearer and the mask body. A mask wearer having an average body shape and an average head shape in a gas supply mask device comprising a cone-shaped member having an opening for introducing gases into the introduction space. When the mask main body is correctly mounted and the mask is correctly mounted, the cone-shaped member is disposed at a position lower than the nose of the mask wearer, and the gases are the mask wearer's nose. It is configured to protrude obliquely upward into the mask main body so as to be directed downward of the nostril, and the gas introduction opening is formed at the top of the cone-shaped member, In a third angle between the vertical plane of the virtual facing the direction and the head-which the gases inlet orifice faces is, look at the mask body from the side, the range of 30 ° to 60 ° ( The gas supply mask device is preferably in the range of 35 ° to 55 °, and more preferably in the range of 40 ° to 50 °. And according to the 1st aspect of the said 2nd viewpoint of this invention, the said mask main body seeing the said mask main body from the said direction and the said mask main body in the said mask mounting state, and the said mask main body. A fourth angle formed by a bisector center line that bisects the left and right halves is in the range of 0 ° to 15 ° (preferably in the range of 0 ° to 10 °, Preferably, the range is 0 ° to 5 °.

また、本発明の上記第１および第２の観点の第２の態様によれば、上記マスク本体の外側から上記ガス類導入用開口を通して上記マスク本体の内側にガス類を送り込むためのガス類供給用の筒状部を備え、上記ガス類供給用筒状部が、上記ガス類をほぼ上方に移送する第１の筒状部と、この第１の筒状部に連結されている第２の筒状部とを備え、上記第２の筒状部が、上記第１の筒状部から送り込まれる上記ガス類の流れの方向を上記ガス類導入用開口が向いている上記方向に偏向させてから上記ガス類を上記ガス類導入用開口に送り込むように構成されている。 According to the second aspect of the first and second aspects of the present invention, a gas supply for feeding gases into the mask body from the outside of the mask body through the gas introduction opening. A first cylindrical portion for transferring the gases substantially upward, and a second cylindrical portion connected to the first cylindrical portion. A cylindrical portion, and the second cylindrical portion deflects the flow direction of the gas fed from the first cylindrical portion in the direction in which the gas introduction opening faces. The gas is sent from the gas introduction opening to the gas introduction opening.

また、本発明の上記第１および第２の観点の第３の態様によれば、上記ガス類導入用開口を有する第１のコネクタと、上記マスク本体の外側に延在するように、この第１のコネクタに連結されている第２のコネクタとを備え、上記第２のコネクタが、ほぼ下方に延在している下側の筒状部から斜め上方に向って弯曲した状態で延在するように、上記下側の筒状部と一体的に構成されている上側の筒状部とを備え、上記上側の筒状部が、上記第１のコネクタに対して回動可能に構成されている。 Further, according to the third aspect of the first and second aspects of the present invention, the first connector having the gas introduction opening and the first connector extending outside the mask body. A second connector coupled to the first connector, and the second connector extends in a state of being bent obliquely upward from a lower cylindrical portion extending substantially downward. As described above, the lower cylindrical portion is integrally formed with the upper cylindrical portion, and the upper cylindrical portion is configured to be rotatable with respect to the first connector. Yes.

さらに、本発明の上記第１および第２の観点の第４の態様によれば、上記第１のコネクタが、上記ガス類導入用開口が向いている上記方向にほぼ沿って延在する筒状部と、この筒状部の上端側に突出するように、この上端側に配設されているほぼ円錐形状などの錐形状の上端面部と、このほぼ円錐形状などの錐形状の上端面部のほぼ中心部分に配設されているガス類導入用の開口とを備えている。そして、上記第４の態様においては、上記第１のコネクタの上記筒状部の上記軸心方向の長さが、１２〜２４ｍｍの範囲（さらに好ましくは、１３．５〜２２．５ｍｍの範囲、最も好ましくは、１４．５〜２１．５ｍｍの範囲）であり、上記第１のコネクタの上記筒状部の上記軸心方向とほぼ直交する方向における内側面積が、１４０〜２９０ｍｍ^２の範囲（さらに好ましくは、１６５〜２７５ｍｍ^２の範囲、最も好ましくは、１７５〜２６５ｍｍ^２の範囲）であり、上記ガス類導入用開口の開口面積が、４．８〜９．２ｍｍ^２の範囲（さらに好ましくは、５．２〜８．８ｍｍ^２の範囲、最も好ましくは、５．６〜８．４ｍｍ^２の範囲）であるのが好ましい。この場合、上記第１のコネクタの上記筒状部が、ほぼ円筒形状であり、上記第１のコネクタの上記筒状部の内径が、１０〜２０ｍｍの範囲（さらに好ましくは、１１．５〜１８．５ｍｍの範囲、最も好ましくは、１２．５〜１７．５ｍｍの範囲）であり、上記ガス類導入用開口が、ほぼ円形状であり、上記ガス類導入用開口の直径が、２〜４ｍｍの範囲（さらに好ましくは、２．２〜３．８ｍｍの範囲、最も好ましくは、２．４〜３．６ｍｍの範囲）であるのも好ましい。 Furthermore, according to the 4th aspect of the said 1st and 2nd viewpoint of this invention, the said 1st connector is the cylinder shape extended substantially along the said direction where the said gas introduction opening has faced. And a cone-shaped upper end surface portion such as a substantially conical shape disposed on the upper end side so as to protrude toward the upper end side of the cylindrical portion, and a substantially cone-shaped upper end surface portion such as a substantially conical shape. And an opening for introducing gases disposed in the central portion. And in the said 4th aspect, the length of the said axial direction of the said cylindrical part of the said 1st connector is the range of 12-24 mm (More preferably, the range of 13.5-22.5 mm, Most preferably, the inner area in the direction substantially perpendicular to the axial direction of the cylindrical portion of the first connector is in the range of 140 to 290 mm ² (further, in the range of 14.5 to 21.5 mm). Preferably, it is in the range of 165 to 275 mm ² , most preferably in the range of 175 to 265 mm ² , and the opening area of the gas introduction opening is in the range of 4.8 to 9.2 mm ² (more preferably, It is preferably in the range of 5.2 to 8.8 mm ² , most preferably in the range of 5.6 to 8.4 mm ² . In this case, the cylindrical portion of the first connector has a substantially cylindrical shape, and the inner diameter of the cylindrical portion of the first connector is in the range of 10 to 20 mm (more preferably, 11.5 to 18). 0.5 mm, most preferably 12.5 to 17.5 mm), the gas introduction opening is substantially circular, and the gas introduction opening has a diameter of 2 to 4 mm. It is also preferable that it is in the range (more preferably in the range of 2.2 to 3.8 mm, most preferably in the range of 2.4 to 3.6 mm).

請求項１および７に係る発明によれば、マスク本体がマスク着用者の顔面に良好にフィットしているときも、良好にフィットしていないときも、マスク本体内を上昇するガス類がマスク本体の上端付近から流出してマスク着用者の目の方に流れ着いてしまうおそれがあまりない。したがって、上記ガス類がマスク着用者の目に流れ着いてマスク着用者の目が乾いた状態になるためにマスク着用者が目に不快感を持つおそれがあまりない。そして、請求項２および８に係る発明によれば、上述のようにマスク着用者が目に不快感を持つおそれがさらに少ない。さらに、請求項３および９に係る発明によれば、上述のようにマスク着用者が目に不快感を持つおそれが一層少ない。 According to the first and seventh aspects of the invention, the gas rising in the mask body is generated when the mask body fits well on the mask wearer's face or when it does not fit well. There is not much fear that it will flow out from the vicinity of the upper end of the mask and flow toward the eyes of the mask wearer. Therefore, since the gas flows into the eyes of the mask wearer and the eyes of the mask wearer are in a dry state, the mask wearer is less likely to have discomfort in the eyes. And according to the invention which concerns on Claim 2 and 8, as above-mentioned, there is much less possibility that a mask wearer may have discomfort in eyes. Furthermore, according to the invention which concerns on Claim 3 and 9, there is much less possibility that a mask wearer may have discomfort to eyes as mentioned above.

また、請求項４および１０に係る発明によれば、マスク着用者が鼻孔からガス類を比較的確実に吸引することができる。そして、請求項５および１１に係る発明によれば、マスク着用者が鼻孔からガス類をさらに確実に吸引することができる。さらに、請求項６および１２に係る発明によれば、マスク着用者が鼻孔からガス類を一層確実に吸引することができる。 Moreover, according to the invention which concerns on Claim 4 and 10, the mask wearer can attract | suck the gas comparatively reliably from a nostril. And according to the invention which concerns on Claim 5 and 11, the mask wearer can attract | suck gas more reliably from a nostril. Furthermore, according to the invention concerning Claim 6 and 12, the mask wearer can attract | suck gas more reliably from a nostril.

また、請求項１３に係る発明によれば、ガス類供給用チューブからガス類供給用筒状部を通してガス類導入用開口に送られる際に、ガス類供給用チューブをガス類供給用筒状部からほぼ下方に吊り下げておくことができる。したがって、ガス類供給用チューブの取り扱いが記述のような従来の酸素マスク装置の場合と同様に比較的簡単である。そして、請求項１４に係る発明によれば、請求項１３に係る発明によって奏する効果を、比較的確実な動作および比較的簡単な構造でもって、さらに確実に奏することができる。 According to the thirteenth aspect of the present invention, when the gas supply tube is sent from the gas supply tube to the gas introduction opening through the gas supply cylindrical portion, the gas supply tube is connected to the gas supply cylindrical portion. Can be hung almost downward. Therefore, the handling of the gas supply tube is relatively simple as in the case of the conventional oxygen mask apparatus as described. According to the fourteenth aspect of the invention, the effect of the thirteenth aspect of the invention can be achieved more reliably with a relatively reliable operation and a relatively simple structure.

また、請求項１５に係る発明によれば、ガス類導入用開口を通してマスク本体の内側に送り込まれるガス類をマスク着用者の鼻孔付近に比較的確実に送り込むことができる。そして、請求項１６および１７に係る発明によれば、請求項１５に係る発明によって奏する効果を、比較的確実な動作および比較的簡単な構造でもって、さらに確実に奏することができる。 According to the fifteenth aspect of the present invention, it is possible to relatively reliably send the gas sent into the mask body through the gas introduction opening to the vicinity of the nose of the mask wearer. According to the sixteenth and seventeenth aspects of the invention, the effects produced by the fifteenth aspect of the invention can be achieved more reliably with a relatively reliable operation and a relatively simple structure.

本発明を酸素マスク装置に適用した一実施例における酸素マスク装置の使用状態での縦断面図である。（実施例１）It is a longitudinal cross-sectional view in the use condition of the oxygen mask apparatus in one Example which applied this invention to the oxygen mask apparatus. Example 1 図１に示す酸素マスク装置の使用状態での斜視図である。（実施例１）It is a perspective view in the use condition of the oxygen mask apparatus shown in FIG. Example 1 酸素供給用チューブが右側に回動した状態での図２と同様の斜視図である。（実施例１）FIG. 3 is a perspective view similar to FIG. 2 with the oxygen supply tube rotated to the right. Example 1 酸素供給用チューブが左側に回動した状態での図２と同様の斜視図である。（実施例１）FIG. 3 is a perspective view similar to FIG. 2 with the oxygen supply tube rotated to the left. Example 1 図１に示す酸素マスク装置の、水平面上に載置した状態での縦断面図である。（実施例１）It is a longitudinal cross-sectional view in the state mounted on the horizontal surface of the oxygen mask apparatus shown in FIG. Example 1 従来の酸素マスク装置の使用状態での縦断面図である。（従来例１）It is a longitudinal cross-sectional view in the use condition of the conventional oxygen mask apparatus. (Conventional example 1)

つぎに、本発明の一実施例における酸素マスク装置を、「１、酸素マスク本体の説明」、「２、第１〜第４のコネクタおよびガス供給用チューブの説明」および「３、マスク本体へのガスの吹き出し方向の説明」に項分けして、図１〜図５を参照しつつ説明する。 Next, the oxygen mask device according to one embodiment of the present invention is referred to as “1, description of the oxygen mask body”, “2, description of the first to fourth connectors and the gas supply tube” and “3, mask body” The description will be made with reference to FIG. 1 to FIG.

１、酸素マスク本体の説明 1. Description of oxygen mask body

ガス類供給用マスク装置としての酸素マスク装置１は、図２、図５などに示すように、患者などのマスク装着者２の顔面３のほぼ中央の部分（具体的には、鼻部４および口部５ならびにこれらの周辺部）を覆うことができるマスク本体６を備えている。なお、マスク本体６は、軟質塩化ビニールなどのほぼ透明な（換言すれば、透光性の）軟質合成樹脂などから、左右ほぼ対称的な形状および左右ほぼ対称的な模様を有するように、一体成形されていてよい。そして、マスク本体６の外周部分１１のうちの少なくとも左右両側部１１ａ、１１ｂは、そのほぼ全体にわたってほぼ平らな面に（換言すれば、マスク本体６を図５に示すように水平面７に上向きに載置したときに、ほぼ水平な面になるように）構成されている。なお、外周部分１１のうちの上側部１１ｃは、マスク装着者２の鼻部４の形状にほぼ対応するように、前方（換言すれば、外側）に向って多少突出している弯曲形状であってよい。そして、外周部分１１のうちの下側部１１ｄは、マスク装着者２の顎部１２のほぼ上方付近に対応するように、左右両側部１１ａ、１１ｂとほぼ連続しているほぼ平らな面であってもよいが、マスク装着者２の顎部１２のほぼ下方付近に対応するように、前方（換言すれば、外側）に向って多少突出している弯曲形状であってもよい。 As shown in FIGS. 2 and 5, the oxygen mask device 1 as a gas supply mask device includes a substantially central portion of the face 3 of the mask wearer 2 such as a patient (specifically, the nose portion 4 and A mask main body 6 capable of covering the mouth portion 5 and the peripheral portions thereof is provided. The mask body 6 is made of a substantially transparent (in other words, translucent) soft synthetic resin such as soft vinyl chloride so as to have a substantially symmetrical shape and a substantially symmetrical pattern. It may be molded. Then, at least the left and right side portions 11a and 11b of the outer peripheral portion 11 of the mask body 6 are substantially flat on the entire surface (in other words, the mask body 6 is directed upward on the horizontal surface 7 as shown in FIG. (When placed, it is configured to be a substantially horizontal surface). The upper portion 11c of the outer peripheral portion 11 has a curved shape that slightly protrudes toward the front (in other words, the outside) so as to substantially correspond to the shape of the nose portion 4 of the mask wearer 2. Good. The lower portion 11d of the outer peripheral portion 11 is a substantially flat surface substantially continuous with the left and right side portions 11a and 11b so as to correspond to the vicinity of the upper portion of the chin portion 12 of the mask wearer 2. However, it may have a curved shape that protrudes somewhat toward the front (in other words, the outside) so as to correspond to the vicinity of the lower part of the jaw 12 of the mask wearer 2.

マスク本体６の外周部分１１の左右一対の側端部１１ａ、１１ｂのうちのほぼ上方方向における中間部分には、図３などに示すように、これら左右一対の側端部１１ａ、１１ｂから左右両外側に向かってそれぞれほぼ台形状などに突出している左右両側の突出部１３ａ、１３ｂが形成されている。そして、これら左右両側の突出部１３ａ、１３ｂには、柔軟性を有する長手状取付け部材としての偏平形状のゴム紐１４の左右両端部がそれぞれ挿通されて取付けられる左右一対の挿通孔１５がそれぞれ配設されている。また、同様の挿通孔１６が左右一対の側端部１１ａ〜１１ｂのほぼ上下方向に沿って例えば３個ずつ順次配設されている。さらに、ゴム紐１４と同様に構成されていてよい第２のゴム紐１７の両端部が、ゴム紐１４に代えてまたはゴム紐１４に加えて、上記３個ずつの挿通孔１６のうちのいずれか１個に挿通されて取付けられていてもよい。そして、左右一対の側壁部１１ａ、１１ｂのそれぞれには、上下一対の挿通用スリット２１が配設されている。また、これら上下一対の挿通用スリット２１のうちの上側のスリットは、ほぼ左右方向において挿通孔１５（換言すれば、突出部１３ａ、１３ｂ）にそれぞれ隣接している。なお、これらの挿通用スリット２１のうちの左右一対の挿通用スリットには、柔軟性を有する長手状取付け部材としての伸縮包帯の両端部が、偏平形状のゴム紐１４に代えて、それぞれ挿通されて取付けられることができる。なお、ゴム紐１４、１７および伸縮包帯のそれぞれは、マスク装着者２の左側の頬部、後頭部および右側の頬部をそれぞれ通るように、マスク装着者２の頭部に掛け渡される。 Of the pair of left and right side end portions 11a and 11b of the outer peripheral portion 11 of the mask body 6, an intermediate portion in a substantially upward direction is provided with both left and right sides from the pair of left and right side end portions 11a and 11b as shown in FIG. Protruding portions 13a and 13b are formed on both the left and right sides, each projecting substantially in a trapezoidal shape toward the outside. The left and right projecting portions 13a and 13b are respectively provided with a pair of left and right insertion holes 15 to which the left and right ends of a flat rubber cord 14 as a flexible longitudinal attachment member are inserted and attached. It is installed. Also, for example, three similar insertion holes 16 are sequentially arranged along the substantially vertical direction of the pair of left and right side end portions 11a to 11b. Furthermore, both end portions of the second rubber cord 17 which may be configured in the same manner as the rubber cord 14 are replaced with any one of the three insertion holes 16 instead of the rubber cord 14 or in addition to the rubber cord 14. Or it may be inserted and attached to one piece. A pair of upper and lower insertion slits 21 is provided in each of the pair of left and right side wall portions 11a and 11b. The upper slits of the pair of upper and lower insertion slits 21 are adjacent to the insertion holes 15 (in other words, the protruding portions 13a and 13b) in the substantially left-right direction. In addition, in the pair of left and right insertion slits of these insertion slits 21, both ends of an elastic bandage as a flexible longitudinal attachment member are inserted instead of the flat rubber cord 14. Can be mounted. Each of the elastic cords 14 and 17 and the elastic bandage is stretched over the head of the mask wearer 2 so as to pass through the left cheek, the back of the mask, and the right cheek of the mask wearer 2, respectively.

マスク本体６のうちの左右両側の多少上方の部分には、図１、図２などに示すように、マスク本体６の内側と外側との間の通気を行うための左右一対の開孔用模様部２２ａ、２２ｂが花模様形状でもってそれぞれ配設されている。なお、これら左右一対の開孔用模様部２２ａ、２２ｂは、マスク本体６がマスク装着者２に装着されている状態においては、マスク装着者２の左右両側の鼻孔に比較的近い位置にそれぞれ配置されている。そして、右側の開孔用模様部２２ｂは、左側の開孔用模様部２２ａと左右ほぼ対称的な形状および模様をそれぞれ有してよい。したがって、以下において、右側の開孔用模様部２２ｂについて具体的に説明して、左側の開孔用模様部２２ａの具体的な説明を省略する。 A pair of left and right opening patterns for ventilating the inside and the outside of the mask body 6 as shown in FIG. 1 and FIG. The portions 22a and 22b are arranged in a flower pattern shape, respectively. The pair of left and right opening pattern portions 22a and 22b are arranged at positions relatively close to the nostrils on both the left and right sides of the mask wearer 2 when the mask body 6 is worn by the mask wearer 2. Has been. The right opening pattern portion 22b may have a shape and a pattern that are substantially symmetrical to the left opening pattern portion 22a. Therefore, in the following, the right opening pattern portion 22b will be described in detail, and a specific description of the left opening pattern portion 22a will be omitted.

開孔用模様部２２ｂは、図１、図２などに示すように、マスク本体６の外側から見てほぼ外方に突出しかつほぼ円形状であってよい外周突起部２３を有している。そして、外周突起部２３のほぼ中心には、マスク本体６の外側から見てほぼ外方に突出している中央突起部（換言すれば、花軸部）２４を有している。また、外周突起部２３と中央突起部２４との間には、中央突起部２４から外周突起部２３に向ってほぼ放射状に延在している複数枚（図示の実施例においては、６枚）の花弁部が配設されている。なお、これら複数枚の花弁部は、貫通孔によって形成されている複数枚（図示の実施例においては、３枚）の第１の花弁部２５と、これら第１の花弁部２５の間において外側に向かった凹部によって形成されている複数枚（図示の実施例においては、３枚）の第２花弁部２６とを備えている。そして、複数枚の花弁部２５、２６（換言すれば、複数枚の第１の花弁部２５および複数枚の第２の花弁部２６）は、花軸部２４の外周囲に沿ってほぼ等角度でもって順次配設されていてよい。したがって、マスク本体６の内側面には、図１、図５などに示すように、複数枚（図示の実施例においては、３枚）の第１の花弁部２５がほぼ等角度（図示の実施例においては、６０°間隔）で配設されている。 As shown in FIGS. 1, 2, and the like, the opening pattern portion 22 b has an outer peripheral protrusion 23 that protrudes outward substantially when viewed from the outside of the mask body 6 and may be substantially circular. A central protrusion (in other words, a flower shaft part) 24 that protrudes substantially outward as viewed from the outside of the mask main body 6 is provided at substantially the center of the outer peripheral protrusion 23. In addition, a plurality of sheets (six in the illustrated embodiment) extending radially from the central protrusion 24 toward the outer peripheral protrusion 23 between the outer peripheral protrusion 23 and the central protrusion 24. Petals are arranged. The plurality of petal portions are arranged between a plurality of (three in the illustrated embodiment) first petal portions 25 formed by through-holes and between the first petal portions 25. And a plurality of (three in the illustrated embodiment) second petal portions 26 formed by the recesses facing toward the surface. The plurality of petal portions 25, 26 (in other words, the plurality of first petal portions 25 and the plurality of second petal portions 26) are substantially equiangular along the outer periphery of the petal portion 24. Thus, they may be arranged sequentially. Therefore, on the inner surface of the mask body 6, as shown in FIGS. 1 and 5, etc., a plurality of (three in the illustrated embodiment) first petal portions 25 are substantially equiangular (the illustrated implementation). In the example, they are arranged at intervals of 60 °.

マスク本体６のうちのほぼ中心の箇所から多少下方の部分には、図１、図５などに示すように、第１および第２のコネクタ３１、３２をそれぞれ取付けるためのコネクタ取付け部３３が配設されている。なお、コネクタ取付け部３３は、ほぼ円柱形状などのほぼ柱形状であってよい開孔３４と、この開孔３４の外周部分を構成するように、開孔３４に向って突出しているほぼリング状の突壁部３５と、この突壁部３５の外周付近から外側に向って突出しているほぼ円筒形状などのほぼ筒状であってよい突壁部３６とを備えている。また、コネクタ取付け部３３（換言すれば、リング状突壁部３５および筒状突壁部３６）は、マスク本体６の水平方向および垂直方向のそれぞれに対して傾斜した状態でもって、マスク本体６に配設されている。そして、コネクタ取付け部３３の上記傾斜方向は、下方から上方に向かって外側に突出する方向であってよい。さらに、コネクタ取付け部３３のほぼ下方側には、このコネクタ取付け部３３に隣接するように、ガス濃度測定用チューブ（図示せず）などを連結することができる第２のコネクタ取付け部４１が配設されている。また、この第２のコネクタ取付け部４１は、ほぼ円形などであってよい開孔４２を備えている。さらに、第２のコネクタ取付け部４１（換言すれば、開孔４２）は、垂直方向に対して多少傾斜している。そして、第２のコネクタ取付け部４１の上記傾斜方向は、下方から上方に向かって外側に多少突出する方向であってよい。なお、上記ガス濃度測定用チューブは、マスク本体６の内部における炭酸ガスなどのガスの濃度を測定するのに用いられることができる。 A connector attachment portion 33 for attaching the first and second connectors 31 and 32 is arranged at a portion slightly below the center of the mask body 6 as shown in FIGS. It is installed. The connector mounting portion 33 has an opening 34 that may be substantially columnar, such as a substantially cylindrical shape, and a substantially ring shape that protrudes toward the opening 34 so as to form an outer peripheral portion of the opening 34. And a protruding wall portion 36 that may be substantially cylindrical such as a substantially cylindrical shape protruding outward from the vicinity of the outer periphery of the protruding wall portion 35. Further, the connector mounting portion 33 (in other words, the ring-shaped protruding wall portion 35 and the cylindrical protruding wall portion 36) is inclined with respect to the horizontal direction and the vertical direction of the mask main body 6, respectively. It is arranged. And the said inclination direction of the connector attaching part 33 may be a direction which protrudes outside toward the upper direction from the downward direction. Further, a second connector mounting portion 41 to which a gas concentration measuring tube (not shown) or the like can be connected is arranged almost below the connector mounting portion 33 so as to be adjacent to the connector mounting portion 33. It is installed. The second connector mounting portion 41 includes an opening 42 that may be substantially circular. Furthermore, the second connector mounting portion 41 (in other words, the opening 42) is slightly inclined with respect to the vertical direction. And the said inclination direction of the 2nd connector attachment part 41 may be a direction which protrudes outside a little toward the upper direction from the downward direction. The gas concentration measuring tube can be used to measure the concentration of gas such as carbon dioxide in the mask body 6.

２、第１〜第４のコネクタおよび酸素供給用チューブの説明 2. Description of the first to fourth connectors and the oxygen supply tube

酸素マスク装置１は、図１、図５などに示すように、第１のコネクタ３１、第２のコネクタ３２、第３のコネクタ４３、ガス供給用チューブ４４および第４のコネクタ（図示せず）をそれぞれ備えている。なお、上記第１〜第４のコネクタのそれぞれは、硬質塩化ビニールなどのほぼ透明な（換言すれば、透光性の）硬質合成樹脂などから、一体成形されていてよい。また、ガス類供給用チューブ４４は、軟質塩化ビニールなどのほぼ透明な（換言すれば、透光性の）軟質合成樹脂などから、一体成形されていてよい。そして、第１のコネクタ３１は、この第１のコネクタ３１の軸心方向Ｃ１にほぼ沿って延在するほぼ円筒形状などの筒形状であってよいガス類供給用の筒状部４５と、この筒状部４５の上端側に突出するように、この上端側に配設されているほぼ円錐形状などの錐形状などの「錐形状部材」としての上端面部４６とを備えている。また、このほぼ錐形状などの上端面部４６のほぼ中心部分には、ほぼ円形状であってよい酸素導入用（換言すれば、マスク本体６の内側へのガス類導入用）の開口５１が配設されている。さらに、上端面部４６の外周囲には、上記軸心方向Ｃ１に対してほぼ直交する方向に突設されかつほぼリング状であってよい外向きフランジ部５２が配設されている。そして、筒状部４５のうちの外向きフランジ部５２よりも外側寄りの外周囲には、上記軸心方向Ｃ１に対してほぼ直交する方向に突設されかつほぼリング状であってよい第２の外向きフランジ部５３が配設されている。なお、第２の外向きフランジ部５３は、外向きフランジ部５２の内径とほぼ同一の内径を有していてよく、また、外向きフランジ部５２の外形よりも十分小さい外径を有していてよい。また、筒状部４５には、ほぼ円周方向に沿って好ましくはほぼ等間隔（換言すれば、ほぼ９０°間隔）でもって、４本の係合用の爪部５４がそれぞれ形成されている。このために、筒状部４５には、４本の係合用腕部５４の両側において、下端から軸心方向に向って途中まで延在しているスリット（換言すれば、切込み）５５がそれぞれ配設されている。そして、これらの係合用腕部５４の下端部の外側面には、係合用突起部５６がそれぞれ突設されている。なお、これらの係合用腕部５４のそれぞれにおいては、筒状部４５のうちの係合用腕部５４以外の部分に較べて、係合用突起部５６だけが軸心方向Ｃ１における下方側に突出していてよい。そして、第１のコネクタ３１をマスク本体６に取付ける際には、第１のコネクタ３１の筒状部４５がマスク本体６の内側から開孔３４に挿通される。なお、この挿通によって、第２の外向きフランジ部５３がマスク本体６などの弾性変形によりこのマスク本体６のリング状突壁部３５を乗り越える。このために、マスク本体６のリング状突壁部３５が第１のコネクタ３１の外向きフランジ５２と第２の外向きフランジ５３との間に挟み込まれるので、第１のコネクタ３１は、マスク本体６に取付けられる。 As shown in FIGS. 1 and 5, the oxygen mask device 1 includes a first connector 31, a second connector 32, a third connector 43, a gas supply tube 44 and a fourth connector (not shown). Each is equipped. Each of the first to fourth connectors may be integrally formed from a substantially transparent (in other words, translucent) hard synthetic resin such as hard vinyl chloride. Further, the gas supply tube 44 may be integrally formed from a substantially transparent (in other words, translucent) soft synthetic resin such as soft vinyl chloride. The first connector 31 includes a cylindrical portion 45 for supplying gases, which may have a cylindrical shape such as a substantially cylindrical shape extending substantially along the axial center direction C1 of the first connector 31. An upper end surface portion 46 as a “cone-shaped member” such as a conical shape such as a substantially conical shape is provided on the upper end side so as to protrude toward the upper end side of the cylindrical portion 45. In addition, an opening 51 for introducing oxygen (in other words, for introducing gases into the inside of the mask body 6), which may be substantially circular, is arranged at a substantially central portion of the upper end surface portion 46 such as a substantially conical shape. It is installed. Further, on the outer periphery of the upper end surface portion 46, an outward flange portion 52 that protrudes in a direction substantially perpendicular to the axial direction C1 and may be substantially ring-shaped is disposed. A second portion of the cylindrical portion 45 that protrudes in a direction substantially perpendicular to the axial direction C1 and has a substantially ring shape is provided on the outer periphery closer to the outer side than the outward flange portion 52. The outward flange portion 53 is disposed. The second outward flange portion 53 may have an inner diameter that is substantially the same as the inner diameter of the outward flange portion 52, and has an outer diameter that is sufficiently smaller than the outer shape of the outward flange portion 52. It's okay. Further, four engaging claw portions 54 are formed on the cylindrical portion 45, preferably at substantially equal intervals (in other words, approximately 90 ° intervals) along the substantially circumferential direction. For this purpose, the cylindrical portion 45 is provided with slits (in other words, cuts) 55 extending from the lower end to the middle in the axial direction on both sides of the four engaging arm portions 54. It is installed. Then, on the outer side surfaces of the lower end portions of the engaging arm portions 54, the engaging protrusions 56 are provided so as to project. In each of the engaging arm portions 54, only the engaging protrusion 56 protrudes downward in the axial direction C1 as compared to the portion of the cylindrical portion 45 other than the engaging arm portion 54. It's okay. When the first connector 31 is attached to the mask body 6, the tubular portion 45 of the first connector 31 is inserted into the opening 34 from the inside of the mask body 6. By this insertion, the second outward flange portion 53 gets over the ring-shaped protruding wall portion 35 of the mask body 6 by elastic deformation of the mask body 6 and the like. For this reason, since the ring-shaped protruding wall portion 35 of the mask body 6 is sandwiched between the outward flange 52 and the second outward flange 53 of the first connector 31, the first connector 31 is connected to the mask body. 6 is attached.

図１、図５などに示す第１のコネクタ３１のほぼ円筒形状などのほぼ筒形状の筒状部４５は、図示の実施例においては、内径がほぼ１５ｍｍであり、軸心方向Ｃ１の長さがほぼ１８ｍｍであり、軸心方向Ｃ１とほぼ直交する方向における内側面積が約２２０ｍｍ^２である。また、第１のコネクタ３１のガス類導入用開口５１は、上記図示の実施例においては、直径がほぼ３ｍｍであり、開口５１の大きさを示す開口面積が約７ｍｍ^２である。そして、第１のコネクタ３１に関する上記各部の数値は、実用性の観点から見て一般的に、つぎの（ａ）項から（ｅ）項に記載の範囲であるのが好ましい：
（ａ）ほぼ円筒形状などのほぼ筒形状の筒状部４５の内径：１０〜２０ｍｍの範囲（さらに好ましくは、１１．５〜１８．５ｍｍの範囲、最も好ましくは、１２．５〜１７．５ｍｍの範囲）、
（ｂ）ほぼ円筒形状などのほぼ筒形状の筒状部４５の軸心方向Ｃ１の長さ：１２〜２４ｍｍの範囲（さらに好ましくは、１３．５〜２２．５ｍｍの範囲、最も好ましくは、１４．５〜２１．５ｍｍの範囲）、
（ｃ）ほぼ円筒形状などのほぼ筒形状の筒状部４５の軸心方向Ｃ１とほぼ直交する方向における内側面積：１４０〜２９０ｍｍ^２の範囲（さらに好ましくは、１６５〜２７５ｍｍ^２の範囲、最も好ましくは、１７５〜２６５ｍｍ^２の範囲）
（ｄ）ガス類導入用開口５１の直径：２〜４ｍｍの範囲（さらに好ましくは、２．２〜３．８ｍｍの範囲、最も好ましくは、２．４〜３．６ｍｍの範囲）、および
（ｅ）ガス類導入用開口５１の開口面積：４．８〜９．２ｍｍ^２の範囲（さらに好ましくは、５．２〜８．８ｍｍ^２の範囲、最も好ましくは、５．６〜８．４ｍｍ^２の範囲）。 In the illustrated embodiment, the cylindrical portion 45 such as the substantially cylindrical shape of the first connector 31 shown in FIGS. 1 and 5 has an inner diameter of about 15 mm and a length in the axial direction C1. Is approximately 18 mm, and the inner area in a direction substantially orthogonal to the axial direction C1 is approximately 220 mm ² . Further, the gas introduction opening 51 of the first connector 31 has a diameter of about 3 mm and an opening area indicating the size of the opening 51 of about 7 mm ² in the illustrated embodiment. In general, the numerical values of the respective parts related to the first connector 31 are preferably in the range described in the following items (a) to (e) from the viewpoint of practicality:
(A) Inner diameter of a substantially cylindrical portion 45 such as a substantially cylindrical shape: in the range of 10 to 20 mm (more preferably in the range of 11.5 to 18.5 mm, most preferably 12.5 to 17.5 mm) Range),
(B) The length in the axial direction C1 of the cylindrical portion 45 having a substantially cylindrical shape such as a substantially cylindrical shape is in the range of 12 to 24 mm (more preferably in the range of 13.5 to 22.5 mm, most preferably 14 .5 to 21.5 mm range),
(C) Inner area in a direction substantially perpendicular to the axial direction C1 of the substantially cylindrical portion 45 such as a substantially cylindrical shape: a range of 140 to 290 mm ² (more preferably, a range of 165 to 275 mm ² , most preferably Is a range of 175 to 265 mm ² )
(D) Diameter of the gas introduction opening 51: in the range of 2 to 4 mm (more preferably in the range of 2.2 to 3.8 mm, most preferably in the range of 2.4 to 3.6 mm), and (e ) Opening area of the gas introduction opening 51: in the range of 4.8 to 9.2 mm ² (more preferably in the range of 5.2 to 8.8 mm ² , most preferably in the range of 5.6 to 8.4 mm ² ). range).

第２のコネクタ３２の下端側の部分は、図１、図５などに示すように、第３コネクタ４３が取付けられるほぼ円筒形状などのほぼ筒形状の下側筒状部６１を構成している。なお、この下側筒状部６１は、図１に示す状態においては、ほぼ上下方向に延在している。そして、第２のコネクタ３２の上端側の部分は、軸心方向Ｃ１にほぼ沿って延在するようになるように、この第２のコネクタ３２の下端側の部分から上方に向かって斜め方向に屈曲している。また、第２のコネクタ３２のほぼ円筒状などのほぼ筒状の上付近６２は、第１のコネクタ３１の筒状部４５とマスク本体６の筒状突壁部３６との間に挿入されている。そして、この挿入によって、第２のコネクタ３２のリング状の上壁部６３がマスク本体６の筒状突壁部３６の下端に当接する。また、第１のコネクタ３１の係合用腕部５４の係合用突起部５６が、抜け止めのために、リング状上壁部６３の下側面に係合する。この結果、第２のコネクタ３２は、第１のコネクタ３１に対して比較的回動し易い状態でもって、第１のコネクタ３１に取付けられる。さらに、第３のコネクタ４３は、図１、図２などに示すように、円筒形状などの大径でかつ有底の筒状部６４と、この筒状部６４の下端部に一体成形などにより連結されている円筒形状などの小径の筒状部６５とをそれぞれ備えている。なお、筒状部６４の底部のほぼ中心位置には、筒状部６５と連通するための貫通孔６６が形成されている。そして、小径の筒状部６５内には、ガス供給用チューブ４４の一端部が挿入されて連結されている。また、ガス供給用チューブ４４の上端開口は、大径の筒状部６４に貫通孔６６を介して連通している。さらに、ガス供給用チューブ４４の他端部には、前記第４のコネクタ（図示せず）が連結されている。そして、この第４のコネクタは、酸素ボンベなどのガスボンベ（図示せず）や、病室などに配設されたガス供給用ノズル（図示せず）に、必要に応じて接続されることができる。 The lower end portion of the second connector 32 constitutes a lower cylindrical portion 61 having a substantially cylindrical shape such as a substantially cylindrical shape to which the third connector 43 is attached, as shown in FIGS. . In addition, this lower side cylindrical part 61 is extended in the up-down direction substantially in the state shown in FIG. The upper end portion of the second connector 32 extends obliquely upward from the lower end portion of the second connector 32 so as to extend substantially along the axial direction C1. It is bent. Further, a substantially cylindrical upper vicinity 62 such as a substantially cylindrical shape of the second connector 32 is inserted between the cylindrical portion 45 of the first connector 31 and the cylindrical protruding wall portion 36 of the mask body 6. Yes. By this insertion, the ring-shaped upper wall portion 63 of the second connector 32 comes into contact with the lower end of the cylindrical protruding wall portion 36 of the mask body 6. Further, the engaging protrusion 56 of the engaging arm portion 54 of the first connector 31 engages with the lower surface of the ring-shaped upper wall portion 63 in order to prevent it from coming off. As a result, the second connector 32 is attached to the first connector 31 in a state where it is relatively easy to rotate with respect to the first connector 31. Further, as shown in FIG. 1 and FIG. 2, the third connector 43 has a cylindrical part 64 having a large diameter and a bottom, and is integrally formed with the lower end part of the cylindrical part 64. A cylindrical portion 65 having a small diameter such as a connected cylindrical shape is provided. A through-hole 66 for communicating with the tubular portion 65 is formed at a substantially central position of the bottom portion of the tubular portion 64. One end of the gas supply tube 44 is inserted into and connected to the small-diameter cylindrical portion 65. The upper end opening of the gas supply tube 44 communicates with the large-diameter cylindrical portion 64 through the through hole 66. Further, the fourth connector (not shown) is connected to the other end of the gas supply tube 44. The fourth connector can be connected to a gas cylinder (not shown) such as an oxygen cylinder or a gas supply nozzle (not shown) disposed in a hospital room or the like as necessary.

３、マスク本体へのガスの吹き出し方向の説明 3. Explanation of gas blowing direction to the mask body

酸素マスク装置１が図１などに示すようにマスク装着者２の顔面３に装着されているときも装着されていないときも、第１のコネクタ３１からマスク本体６内の空間（換言すれば、顔面３とマスク本体６との間に存在するガス類導入空間）６８に送り込まれるガス流６７の方向（換言すれば、ガス導入用開口５１が向いている方向）は、軸心方向Ｃ１とほぼ一致している。そして、酸素マスク装置１（換言すれば、マスク本体６）が図５に示すように水平面７上に表向きに載置されているとき（以下、「図５に示すマスク載置状態」という。）においては、上記軸心方向Ｃ１は、平面的に見て、マスク本体６（換言すれば、酸素マスク装置１）のほぼ上下方向に延在している。したがって、上記軸心方向Ｃ１は、平面的に見て、図５に示すマスク本体６（換言すれば、酸素マスク装置１）を真上から見て左右に二等分している仮想の二等分中心線（換言すれば、マスク本体６の上下方向に延在する中心線）とほぼ一致しているから、両者の成す角度は、平面的に見て、ほぼ０°である。また、図５に示すマスク載置状態においては、上記軸心方向Ｃ１は、マスク本体６（換言すれば、酸素マスク装置１）の前面部のほぼ下部から後面部のほぼ上部に向って斜め方向に直線的に延在している。そして、上記軸心方向Ｃ１と水平面７との成す角度θ１は、マスク本体６を真横から見て（換言すれば、図５に示すマスク載置状態において）、ほぼ４５°である。さらに、図１には、平均的な体形および平均的な頭部形状をそれぞれ有する人間（換言すれば、マスク装着者２）が酸素マスク装置１（換言すれば、マスク本体６）を正しく装着して正面を向いたマスク装着状態（以下、「図１に示すマスク正装着状態」という。）が示されている。なお、この図１に示すマスク正装着状態は、図５に示すように酸素マスク装置１を水平面７上に表向きに載置した状態に較べて、酸素マスク装置１をほぼ９０°立ち上がらせた点のみが実質的に相違している。したがって、図５における水平面７は、図１においては、仮想の垂直面（換言すれば、仮想の鉛直面）７１に置き換えられている。また、図５における角度θ１は、図１においては、角度θ２に置き換えられている。なお、２つの角度θ１、θ２のそれぞれは、本発明の目的を達成するためには、実用性の観点から見て一般的に、３０°〜６０°の範囲であるのが好ましく、３５°〜５５°の範囲であるのがさらに好ましく、４０°〜５０°の範囲であるのが最も好ましい。そして、上記軸心方向Ｃ１がマスク本体６（換言すれば、酸素マスク装置１）を正面から見てこのマスク本体６を左右に二等分している仮想の二等分中心線（換言すれば、マスク本体６の頭部側から顎部側まで延在する二等分中心線）と成す角度θ３（図示せず）は、本発明の目的を達成するためには、実用性の観点から見て一般的に、０°〜１５°の範囲であるのが好ましく、０°〜１０°の範囲であるのがさらに好ましく、０°〜５°の範囲であるのが最も好ましい。 Even when the oxygen mask device 1 is attached to the face 3 of the mask wearer 2 as shown in FIG. 1 or the like, the space in the mask body 6 from the first connector 31 (in other words, The direction of the gas flow 67 fed into the gas introduction space 68 between the face 3 and the mask body 6 (in other words, the direction in which the gas introduction opening 51 faces) is substantially the axial direction C1. Match. Then, when the oxygen mask device 1 (in other words, the mask main body 6) is placed face up on the horizontal plane 7 as shown in FIG. 5 (hereinafter referred to as “the mask placement state shown in FIG. 5”). The axial direction C1 extends substantially in the vertical direction of the mask body 6 (in other words, the oxygen mask device 1) in plan view. Therefore, the axial direction C1 is an imaginary bisection that bisects the mask body 6 (in other words, the oxygen mask device 1) shown in FIG. Since it is almost coincident with the center line of the minute (in other words, the center line extending in the vertical direction of the mask main body 6), the angle formed by the two is substantially 0 ° in plan view. Further, in the mask placement state shown in FIG. 5, the axial direction C1 is an oblique direction from substantially the lower part of the front surface of the mask body 6 (in other words, the oxygen mask device 1) toward the upper part of the rear surface. Extends linearly. The angle θ1 formed by the axial direction C1 and the horizontal plane 7 is approximately 45 ° when the mask body 6 is viewed from the side (in other words, in the mask placement state shown in FIG. 5). Further, FIG. 1 shows that a human having an average body shape and an average head shape (in other words, a mask wearer 2) correctly wears the oxygen mask device 1 (in other words, the mask body 6). The mask wearing state (hereinafter referred to as “the mask normal wearing state shown in FIG. 1”) facing the front is shown. 1 is that the oxygen mask device 1 is raised by approximately 90 ° compared to the state in which the oxygen mask device 1 is placed face up on the horizontal surface 7 as shown in FIG. Only the difference is substantially. Accordingly, the horizontal plane 7 in FIG. 5 is replaced with a virtual vertical plane (in other words, a virtual vertical plane) 71 in FIG. Further, the angle θ1 in FIG. 5 is replaced with the angle θ2 in FIG. In order to achieve the object of the present invention, each of the two angles θ1 and θ2 is generally preferably in the range of 30 ° to 60 ° from the viewpoint of practicality, and preferably 35 ° to The range of 55 ° is more preferable, and the range of 40 ° to 50 ° is most preferable. The axial direction C1 is a virtual bisector centerline (in other words, the mask body 6 is divided into left and right halves when the mask body 6 (in other words, the oxygen mask device 1) is viewed from the front. The angle θ3 (not shown) formed by the bisector center line extending from the head side to the chin side of the mask body 6 is a practical point of view in order to achieve the object of the present invention. In general, it is preferably in the range of 0 ° to 15 °, more preferably in the range of 0 ° to 10 °, and most preferably in the range of 0 ° to 5 °.

マスク装着者２が図５に示すように酸素マスク装置１を装着しているマスク装着状態において、前記第４のコネクタに酸素ガスなどのガスが供給されると、このガスは、この第４のコネクタからガス供給用チューブ４４、第３のコネクタ４３をそれぞれ介して第２のコネクタ３２に送り込まれる。そして、第２のコネクタ３２に送り込まれた上記ガスは、第２のコネクタ３２からこの第２のコネクタ３２のガス導出用開口（換言すれば、マスク本体６のガス導入用開口）５１を介してマスク本体６の内側に送り込まれる。なお、マスク本体６の上記ガスの送り込み方向は、マスク本体６の内側へのガス流６７の噴き出し方向（換言すれば、ガス導出用開口５１が向いている方向）にほぼ一致しているから、上記ガスは、マスク装着者２の鼻部４の鼻孔の多少下方の付近に送り込まれる。したがって、マスク装着者２は、上記ガスをきわめて容易にかつきわめて確実に吸引することができる。また、マスク装着者２とマスク本体６との間に存在する余分なガスは、必要に応じて、３枚の第１の花弁部（換言すれば、開孔）２５を通してマスク本体６の外部に自然な流れで放出されることができる。したがって、上記ガスがマスク着用者２の目６９の方に流れ着いて、マスク着用者２が不快感を持つおそれが、あまりない。 In a mask wearing state in which the mask wearer 2 is wearing the oxygen mask device 1 as shown in FIG. 5, when a gas such as oxygen gas is supplied to the fourth connector, the gas is supplied to the fourth connector. The gas is supplied from the connector to the second connector 32 through the gas supply tube 44 and the third connector 43. Then, the gas sent to the second connector 32 passes through the second connector 32 through the gas outlet opening 51 (in other words, the gas inlet opening of the mask body 6) 51. It is fed into the mask body 6. Note that the gas feeding direction of the mask body 6 substantially coincides with the ejection direction of the gas flow 67 to the inside of the mask body 6 (in other words, the direction in which the gas outlet opening 51 faces). The gas is sent to a position slightly below the nostril of the nose 4 of the mask wearer 2. Therefore, the mask wearer 2 can suck the gas very easily and extremely reliably. Further, excess gas existing between the mask wearer 2 and the mask main body 6 passes through the three first petals (in other words, openings) 25 to the outside of the mask main body 6 as necessary. Can be released in a natural stream. Therefore, there is no possibility that the gas flows toward the eyes 69 of the mask wearer 2 and the mask wearer 2 has an uncomfortable feeling.

ガス供給用チューブ４４が、図２に示すように、正面から見て左右に位置ずれしていない状態においては、第２のコネクタ３２は、図１、図２などに示すように、第１のコネクタ３１の下端対してほぼ真下に位置している。しかし、ガス供給用チューブ４４が何らかの理由でもって図２に示す状態から図３に示すようにマスク本体６の右側に往動したときには、第２のコネクタ３２が第１のコネクタ３１（換言すれば、マスク本体６）に対して図２における右回りに往回動する。したがって、ガス供給用チューブ４４は、このような場合でも、捩れたり折れ曲ったりすることが特になくて、ほぼ正常なガス供給状態を保持する。そして、ガス供給用チューブ４４が図３に示す状態から図２に示す状態に復動するときには、第２のコネクタ３２が第１のコネクタ３１（換言すれば、マスク本体６）に対して図３における左回りに復回動する。したがって、ガス供給用チューブ４４は、このような場合でも、捩れたり折り曲がったりすることが特になくて、ほぼ正常なガス供給状態を保持する。さらに、ガス供給用チューブ４４が何らかの理由でもって図２に示す状態から図４に示すようにマスク本体６の左側に往動したときにも、第２のコネクタ３２が第１のコネクタ３１（換言すれば、マスク本体６）に対して図２における左回りに往回動する。したがって、ガス供給用チューブ４４は、このような場合でも、捩れたり折れ曲ったりすることが特になくて、ほぼ正常なガス供給状態を保持する。そして、ガス供給用チューブ４４が図４に示す状態から図２に示す状態に復動したときには、第２のコネクタ３２が第１のコネクタ３１（換言すれば、マスク本体６）に対して図３における右回りに復回動する。したがって、ガス供給用チューブ４４は、このような場合でも、不必要に捩れたり折れ曲ったりすることが特になくて、ほぼ正常なガス供給状態を保持する。 In a state where the gas supply tube 44 is not displaced from side to side as viewed from the front as shown in FIG. 2, the second connector 32 is connected to the first connector as shown in FIGS. The connector 31 is located almost directly below the lower end. However, when the gas supply tube 44 moves forward from the state shown in FIG. 2 to the right side of the mask body 6 as shown in FIG. 3 for some reason, the second connector 32 is replaced with the first connector 31 (in other words, , The mask body 6) rotates clockwise in FIG. Therefore, even in such a case, the gas supply tube 44 is not particularly twisted or bent, and maintains a substantially normal gas supply state. When the gas supply tube 44 moves back from the state shown in FIG. 3 to the state shown in FIG. 2, the second connector 32 is in FIG. 3 with respect to the first connector 31 (in other words, the mask body 6). Return counterclockwise at. Therefore, even in such a case, the gas supply tube 44 is not particularly twisted or bent, and maintains a substantially normal gas supply state. Further, when the gas supply tube 44 is moved forward from the state shown in FIG. 2 to the left side of the mask body 6 as shown in FIG. 4 for some reason, the second connector 32 is connected to the first connector 31 (in other words, Then, the anti-clockwise rotation in FIG. 2 is made with respect to the mask body 6). Therefore, even in such a case, the gas supply tube 44 is not particularly twisted or bent, and maintains a substantially normal gas supply state. Then, when the gas supply tube 44 moves back from the state shown in FIG. 4 to the state shown in FIG. 2, the second connector 32 is in FIG. 3 with respect to the first connector 31 (in other words, the mask body 6). It rotates backward clockwise. Therefore, even in such a case, the gas supply tube 44 is not particularly twisted or bent unnecessarily, and maintains a substantially normal gas supply state.

以上、本発明の一実施例について詳細に説明したが、本発明は、この実施例に限定されるものではなく、特許請求の範囲に記載されている発明の趣旨に基づいて各種の変更および修正を施されることが可能である。 As mentioned above, although one Example of this invention was described in detail, this invention is not limited to this Example, Based on the meaning of the invention described in the claim, various changes and corrections Can be applied.

例えば、上述の実施例においては、第１のコネクタ３１を第２のコネクタ３２とは別体に構成した。しかし、第１のコネクタ３１を第２のコネクタ３２と一体に構成することも可能である。 For example, in the above-described embodiment, the first connector 31 is configured separately from the second connector 32. However, the first connector 31 can be configured integrally with the second connector 32.

また、上述の実施例においては、第３のコネクタ４３を第２のコネクタ３２とは別体に構成した。しかし、第３のコネクタ４３を第２のコネクタ３２と一体に構成することも可能である。 In the above-described embodiment, the third connector 43 is configured separately from the second connector 32. However, the third connector 43 can be configured integrally with the second connector 32.

さらに、上述の実施例においては、３つの第１の花弁部２５によってそれぞれ構成されている３つの貫通孔を常時開放状態にしている。しかし、開孔用模様部２２ａ、２２ｂのそれぞれの外側面に回動可能に取り付けられた透光性などのカバー部材（図示せず）をマスク本体６の外側面にそれぞれ配設してもよい。この場合、上記カバー部材を回動させることによって、上記３つの貫通孔を開放状態にしたり、閉塞状態にしたり、両者の中間の状態にしたりすることができるので、マスク本体６内の通気状態を調整することができる。 Furthermore, in the above-described embodiment, the three through holes respectively constituted by the three first petal portions 25 are always opened. However, a translucent cover member (not shown) rotatably attached to the outer side surfaces of the opening pattern portions 22a and 22b may be disposed on the outer side surface of the mask body 6, respectively. . In this case, by rotating the cover member, the three through-holes can be opened, closed, or intermediate between the two, so that the ventilation state in the mask body 6 can be changed. Can be adjusted.

１酸素マスク装置（ガス類供給用マスク装置）
２マスク装着者
３顔面
６マスク本体
７水平面
３１第１のコネクタ
３２第２のコネクタ
４５ガス類供給用筒状部
４６円錐形状の上端面部（錐形状部材）
５１酸素導入用開口（ガス類導入用開口）
６１下側筒状部
６８酸素ガス導入空間（ガス類導入空間）
７１仮想の垂直面
Ｃ１軸心方向
θ１第１の角度
θ２第３の角度 1 Oxygen mask device (mask device for gas supply)
2 Mask wearer 3 Face 6 Mask body 7 Horizontal surface 31 First connector 32 Second connector 45 Gas supply cylindrical portion 46 Conical upper end surface portion (conical member)
51 Oxygen introduction opening (gas introduction opening)
61 Lower cylindrical portion 68 Oxygen gas introduction space (gas introduction space)
71 Virtual vertical plane C1 Axial direction θ1 First angle θ2 Third angle

Claims

A mask body that can be worn on the mask wearer's head;
Gas supply mask device comprising: a cone-shaped member having a gas introduction opening capable of introducing gas into a gas introduction space existing between the face of the mask wearer and the mask body In
The cone-shaped member is disposed at a position lower than the nose of the mask wearer when a mask wearer having an average body shape and an average head shape correctly wears the mask body, The gas is configured to protrude obliquely upward into the mask body so as to go below the nostril of the mask wearer,
The gas introduction opening is formed at the top of the cone-shaped member,
In the mask placement state where the mask body is placed face up on a horizontal plane, the first angle formed by the direction in which the gas introduction opening faces and the horizontal plane is viewed from the side of the mask body. A gas supply mask device having a range of 30 ° to 60 °.

2. The gas supply mask device according to claim 1, wherein in the mask placement state, the first angle is in a range of 35 ° to 55 ° when the mask body is viewed from the side.

2. The gas supply mask apparatus according to claim 1, wherein in the mask placement state, the first angle is in a range of 40 ° to 50 ° when the mask main body is viewed from the side.

In the mask mounting state, a second direction formed by the direction in which the gas introduction opening faces and a bisector center line that bisects the mask main body into left and right when the mask main body is viewed from directly above. The gas supply mask device according to any one of claims 1 to 3, wherein the angle is in a range of 0 ° to 15 ° when the mask body is viewed from directly above.

5. The gas supply mask apparatus according to claim 4 , wherein in the mask placement state, the second angle is in a range of 0 ° to 10 ° when the mask body is viewed from directly above. .

5. The gas supply mask apparatus according to claim 4 , wherein in the mask placement state, the second angle is in a range of 0 ° to 5 ° when the mask body is viewed from directly above. .

A mask body that can be worn on the mask wearer's head;
Gas supply mask device comprising: a cone-shaped member having a gas introduction opening capable of introducing gas into a gas introduction space existing between the face of the mask wearer and the mask body In
When the mask wearer having an average body shape and an average head shape is wearing the mask body correctly and facing the front, the cone-shaped member is lower than the nose of the mask wearer And the gas is configured to protrude obliquely upward into the mask body so that the gas is directed below the nostril of the mask wearer,
The gas introduction opening is formed at the top of the cone-shaped member,
In the mask normal mounting state, a third angle formed by the direction in which the gas introduction opening faces and the virtual vertical plane facing the front is 30 ° to 30 ° when the mask body is viewed from the side. A gas supply mask device having a range of 60 °.

8. The gas supply mask device according to claim 7, wherein the third angle is in a range of 35 ° to 55 ° when the mask main body is viewed from the side in the mask normal mounting state.

8. The gas supply mask device according to claim 7, wherein the third angle is in a range of 40 [deg.] To 50 [deg.] When the mask main body is viewed from the side in the mask normal mounting state.

A fourth angle formed between the direction in which the gas introduction opening is facing and the bisector center line that bisects the mask main body in the right and left directions when the mask main body is viewed from the front when the mask is normally mounted. The gas supply mask device according to claim 7, wherein the mask body is in a range of 0 ° to 15 ° when the mask main body is viewed from the front.

11. The gas supply mask device according to claim 10 , wherein the fourth angle is in a range of 0 ° to 10 ° when the mask main body is viewed from the front in the mask mounted state.

11. The gas supply mask apparatus according to claim 10 , wherein the fourth angle is in a range of 0 ° to 5 ° when the mask main body is viewed from the front in the mask normal mounting state.

A cylindrical portion for supplying gases for feeding gases into the inside of the mask body through the gas introduction opening from the outside of the mask body,
The gas supply cylindrical part includes a first cylindrical part for transferring the gases substantially upward, and a second cylindrical part connected to the first cylindrical part,
The second cylindrical part deflects the flow of the gas fed from the first cylindrical part in the direction in which the gas introduction opening faces, and then the gas is supplied to the gas. The gas supply mask device according to any one of claims 1 to 12, wherein the gas supply mask device is configured to be fed into a gas introduction opening.

A first connector having the gas introduction opening, and a second connector connected to the first connector so as to extend outside the mask body;
The second connector is configured integrally with the lower cylindrical portion so as to extend in a state of being bent obliquely upward from the lower cylindrical portion extending substantially downward. An upper cylindrical portion that is
The gas supply mask device according to any one of claims 1 to 13, wherein the upper cylindrical portion is configured to be rotatable with respect to the first connector. .

The first connector is disposed on the upper end side so as to protrude from the upper end side of the tubular portion extending substantially along the direction in which the gas introduction opening faces. and the cone-shaped member which is, for gases supply according possible to claim 14, characterized in that a said gases introduction apertures that are arranged on substantially the central portion of the cone-shaped member Mask device.

The axial length of the cylindrical portion of the first connector is in the range of 12 to 24 mm,
The inner area in the direction substantially orthogonal to the axial direction of the cylindrical portion of the first connector is in a range of 140 to 290 mm ² .
Opening area of the gases inlet orifice is gases supply mask system according to claim 15, characterized in that in the range of 4.8~9.2mm ^2.

The cylindrical portion of the first connector is substantially cylindrical;
An inner diameter of the cylindrical portion of the first connector is in a range of 10 to 20 mm;
The gas introduction opening is substantially circular,
The gas supply mask device according to claim 16, wherein the diameter of the gas introduction opening is in the range of 2 to 4 mm.