JP4514909B2 - Air shield face shield - Google Patents
Air shield face shield Download PDFInfo
- Publication number
- JP4514909B2 JP4514909B2 JP2000210304A JP2000210304A JP4514909B2 JP 4514909 B2 JP4514909 B2 JP 4514909B2 JP 2000210304 A JP2000210304 A JP 2000210304A JP 2000210304 A JP2000210304 A JP 2000210304A JP 4514909 B2 JP4514909 B2 JP 4514909B2
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- Prior art keywords
- air
- air supply
- mask
- shield
- face
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【０００１】
【発明の属する技術分野】
本発明は、保護帽を有する送気マスクに使用する送気マスク用フェイスシールドに関する。
【０００２】
【従来技術】
送気マスクは装着者の顔面を覆って汚染されている外部と遮断し且つ視野を確保するアイピースと、該アイピースの周縁にはアイピ−スと顔面との間の空間（単にマスク内空間という）を陽圧（送気時）に保持するためのフェイスシールが設けられおり、電動ファン又はコンプレッサー等によって送気管を経て送気ダクトよりマスク内空間に清浄な空気が供給されている。更に一般に作業者の頭部を保護するための保護帽を取り付けて使用する。従って、作業者は保護帽を装着し、有害物質の存在する環境と作業者の顔面をアイピ−スによって隔離し、作業者は常に送気ダクトより供給される清浄な空気を吸うことができ、かつ、アイピースによって飛来物等から顔面を保護することができる。そして、保護帽の縁が送気ダクトの後方部と送気ダクトに調整可能に取り付けられているフレ−ムとで挟み込むようにして固定している。
フレームとバイザーにはアイピースを上下させる回転機構が設けられており、送気を必要としない安全区域での作業時或いは休憩時間等にはシールドを跳ね上げておくことができる。また、清浄な空気は、後方に取り付けられた送気管を通り送気ダクトで左右に分岐されて吹出し口より供給される。送気管吹出し口付近には、フェイスシールの補助を目的としたサイドシールが設けられており、サイドシ−ルは作業者の耳の位置により移動させることが可能である。
【０００３】
【発明が解決しようとする課題】
このようなフェイスシールを装着して作業者は有害環境下で作業を行うのであるが、左右から送気される気体は中央部分で流れがぶつかり合って乱流が発生し、この乱流が作業者の目の乾きを誘発するという問題点があった。
そこで、この問題点を解決するために種々検討した結果、本発明を完成したもので、本発明の目的はフェイスシールドを装着したときの作業者の目の乾きを軽減したフェイスシールドを提供することである。
【０００４】
【課題を解決するための要件】
本発明の要旨は、保護帽を固定した送気マスク用フェイスシールドであって、該送気マスク用フェイスシールドの保護帽の両側面のそれぞれに、フェイスシールドの内側に送気する送気路の吹き出し口を設け、該吹き出し口の一方が上向きに、該吹き出し口の他方が下向きになるように、該吹き出し口を左右非対称に設けた送気マスク用フェイスシールド保護帽を固定した送気マスク用フェイスシールドであって、該送気マスク用フェイスシールドである。
すなわち、本発明においては送気ダクトの先端の吹き出し口を左右非対称にすることで、従来の送気マスク用フェイスシールにおける中央部での気体のぶつかり合いによる乱流を避けることができ、その結果、作業者の目の乾きを軽減することができる。
【０００５】
【実施例】
次に本発明の実施例として図面をもって具体的に説明する。図１は本発明の送気マスク用フェイスシ−ルドの正面図であり、図２はその側面図である。図３は保護帽を固定する際の説明図、図４はシールド全開の説明図、図５は送気ダクトの上から見た詳細図である。
図において、アイピ−ス２にはフェイールシール３及びバイザー４が固定され、フレーム５に取り付けられている固定ネジ６によって、固定ネジ６を中心に回転可能に取り付けられている。フレーム５は送気ダクト７に設けられている調節ネジ８により作業者の保護帽サイズに合うように調整することができる。送気ダクト７の後部はに送気管が取り付けられており（図示せず）、送気ダクト７は左右に分岐しその先端には吹き出し口９，９が設けられており（図５参照）、作業者に新鮮な空気が送気できるようになっている。保護帽１の縁を送気ダクト７とフレ−ム６で挟み込むようにして固定する（図３参照）。また、送気を必要としない安全区域での作業時或いは休憩時間には、アイピース２を跳ね上げ全開とすることができる（図４参照）。
【０００６】
このようなフェイスシールドにおいて、清浄な空気を送気ダクトの吹き出し口９よりマスク内に供給すると空気は左右から吹き出され、中央部でぶつかり合って乱流をおこし、この乱流によって作業者の目の乾きを誘発する。
本発明においてはこの乱流が生じないように吹き出し口を非対称とするのである。吹き出し口を非対称にするとは吹き出し口の一方を例えば上方に、他方を下方に向ける等の手段によって行うことができる。
【０００７】
【発明の効果】
以上述べたように、本発明は送気ダクトの吹き出し口を非対称としたので、送気ダクトより供給される空気はマスク内で乱流を生じることを避けることができこれによって作業者の目の乾きを軽減する事ができるので長時間作業を行うことができる等の効果を奏する。
【図面の簡単な説明】
【図１】本発明にかかる送気マスク用フェイスシ−ルドの正面図
【図２】図１の送気マスク用フェイスシ−ルドの側面図
【図３】図１の送気マスク用フェイスシ−ルドに保護帽を固定する際の側面図
【図４】図１の送気マスク用フェイスシ−ルドのシールド全開の側面図
【図５】図１の送気マスク用フェイスシ−ルドの送気ダクトの上から見た詳細図
【符号の説明】
１ 保護帽 ２ アイピ−ス ３ フェイスシール ４ バイザー
５ フレーム ６ 固定ネジ ７ 送気ダクト ８ 調節ネジ
９ 送気ダクト吹き出し口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a face shield for an air supply mask used for an air supply mask having a protective cap.
[0002]
[Prior art]
The air supply mask covers the wearer's face and shields the contaminated outside and secures a field of view, and a space between the eyepiece and the face at the periphery of the eyepiece (simply referred to as a mask internal space). Is maintained at a positive pressure (at the time of air supply), and clean air is supplied from the air supply duct to the space in the mask through the air supply pipe by an electric fan or a compressor. In general, a protective cap for protecting the operator's head is attached. Therefore, the worker wears a protective cap, isolates the environment where harmful substances are present and the face of the worker with an eyepiece, and the worker can always inhale clean air supplied from the air duct, In addition, the face can be protected from flying objects by the eyepiece. The edge of the protective cap is fixed so as to be sandwiched between the rear portion of the air supply duct and a frame that is adjustably attached to the air supply duct.
The frame and the visor are provided with a rotating mechanism for moving the eyepiece up and down, and the shield can be flipped up when working in a safe area where no air supply is required or during breaks. Further, clean air passes through an air supply pipe attached to the rear side, is branched to the left and right by an air supply duct, and is supplied from the outlet. A side seal for the purpose of assisting the face seal is provided in the vicinity of the air pipe outlet, and the side seal can be moved depending on the position of the ear of the operator.
[0003]
[Problems to be solved by the invention]
Wearing such a face seal, the operator works in a harmful environment, but the gas sent from the left and right collides with each other in the center and generates turbulent flow. There was a problem of inducing dryness of the eyes.
Accordingly, as a result of various studies to solve this problem, the present invention has been completed, and an object of the present invention is to provide a face shield that reduces the dryness of the eyes of the operator when the face shield is attached. It is.
[0004]
[Requirements for solving the problem]
The gist of the present invention is a face shield for an air supply mask having a protective cap fixed thereto, and air supply passages for supplying air to the inside of the face shield on each side surface of the protective cap of the face shield for the air supply mask. For an air-feeding mask provided with a face shield protective cap for an air-feeding mask in which the air-blowing port is provided asymmetrically so that one of the air-blowing ports faces upward and the other of the air-blowing ports faces downward A face shield for the air-feeding mask.
That is, in the present invention, by making the outlet at the tip of the air supply duct asymmetrical, turbulent flow due to gas collision at the center in the conventional air mask face seal can be avoided, and as a result, , Can dry the eyes of the operator.
[0005]
【Example】
Next, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a front view of a face shield for an air supply mask according to the present invention, and FIG. 2 is a side view thereof. 3 is an explanatory view when the protective cap is fixed, FIG. 4 is an explanatory view of the shield fully opened, and FIG. 5 is a detailed view seen from above the air supply duct.
In the drawing, a fail seal 3 and a visor 4 are fixed to the
[0006]
In such a face shield, when clean air is supplied into the mask from the air outlet 9 of the air duct, the air is blown out from the left and right, colliding with each other in the center, and causing turbulent flow. Induces dryness.
In the present invention, the outlet is made asymmetric so that this turbulent flow does not occur. Making the air outlet asymmetric can be performed by means such that one of the air outlets is directed upward and the other is directed downward, for example .
[0007]
【The invention's effect】
As described above, according to the present invention, since the air outlet of the air supply duct is asymmetrical, the air supplied from the air supply duct can avoid the occurrence of turbulent flow in the mask. Since the dryness can be reduced, there is an effect that the work can be performed for a long time.
[Brief description of the drawings]
FIG. 1 is a front view of a face shield for an air supply mask according to the present invention. FIG. 2 is a side view of the face shield for an air supply mask of FIG. FIG. 4 is a side view of the air shield face shield of FIG. 1 fully opened. FIG. 5 is a top view of the air duct of the air mask face shield of FIG. Detailed view seen [Explanation of symbols]
1
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000210304A JP4514909B2 (en) | 2000-07-11 | 2000-07-11 | Air shield face shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000210304A JP4514909B2 (en) | 2000-07-11 | 2000-07-11 | Air shield face shield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002017879A JP2002017879A (en) | 2002-01-22 |
| JP4514909B2 true JP4514909B2 (en) | 2010-07-28 |
Family
ID=18706589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000210304A Expired - Fee Related JP4514909B2 (en) | 2000-07-11 | 2000-07-11 | Air shield face shield |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4514909B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8936022B2 (en) | 2007-03-23 | 2015-01-20 | 3M Innovative Properties Company | Air delivery apparatus for respirator hood |
| US9868001B2 (en) | 2007-10-05 | 2018-01-16 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
| US10137320B2 (en) | 2007-03-23 | 2018-11-27 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022080047A1 (en) * | 2020-10-13 | 2022-04-21 | デンカ株式会社 | Face shield |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743757A (en) * | 1980-08-26 | 1982-03-11 | Tateyoshi Sueshige | Dustproof mask |
| JPS6131458U (en) * | 1984-07-31 | 1986-02-25 | 株式会社重松製作所 | hood |
| JPH0522191Y2 (en) * | 1986-05-06 | 1993-06-07 | ||
| JPH06170007A (en) * | 1992-12-02 | 1994-06-21 | Masayoshi Wayama | Air mask |
| JPH07112032A (en) * | 1993-10-14 | 1995-05-02 | Kurusu Yosetsu Kogyosho:Kk | Respiration protective means and respiration protective method |
-
2000
- 2000-07-11 JP JP2000210304A patent/JP4514909B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8936022B2 (en) | 2007-03-23 | 2015-01-20 | 3M Innovative Properties Company | Air delivery apparatus for respirator hood |
| US10137320B2 (en) | 2007-03-23 | 2018-11-27 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
| US11130008B2 (en) | 2007-03-23 | 2021-09-28 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
| US9868001B2 (en) | 2007-10-05 | 2018-01-16 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002017879A (en) | 2002-01-22 |
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