SE1650660A1

SE1650660A1 - Escape Hood Device

Info

Publication number: SE1650660A1
Application number: SE1650660A
Authority: SE
Inventors: Dietrich Michael; Rosert Michael; SCHOLZ Mathias
Original assignee: Draeger Safety Ag & Co Kgaa
Priority date: 2015-06-02
Filing date: 2016-05-17
Publication date: 2016-12-03
Also published as: SE542132C2; AT517313A2; DE102015006826A1; AT16405U1; DE102015006826B4

Abstract

The invention relates to an escape hood device (1) with an escape hood (10) in a protective cover (50), wherein the escape hood (10) comprises a flexible head hood (11) with an integrated, flexible viewing window (12) and a filter (20), wherein the filter (20) has a filter inlet opening (15), which is arranged on the outside (17) of the flexible head hood (11), and a filter outlet opening (16), which leads into the interior (18) of the flexible head hood (11), wherein the protective cover (50) is connected to at least one filter plug (21, 22), and wherein the filter plug(s) (21, 22) can be inserted into the filter (20) in a manner so they can be pulled out, and they block the activation of the filter (20).(Figure 1)

Description

Escape Hood DeviceDESCRIPTION The invention relates to an escape hood device according to Claim 1.

The escape hood or fire escape hood is a protectiVe hood made of a coated fabric, forexample, plastic-coated textiles or a plastic of loW ﬂammability, in each case haVing a ﬂexibleintegrated Viewing Window and a (multigrade) filter integrated in the escape hood. The escapehood is Wom on the head and used primarily by firefighters in smoky areas, for example, inbuming buildings.

The ﬁlter preVents the penetration of poisonous products generated by fire (gases, Vapors,soot) and also carbon monoxide into the interior of the escape hood, Which can be released in afire and lead to fatal smoke gas intoxications. The protectiVe effect against carbon monoxide(CO) is achieved by a catalytic filter, in particular Hopkalite, Which catalyzes the oxidation ofCO With atmospheric oxygen to C02. The escape hood is thus an air circulation-dependentprotectiVe breathing apparatus (escape filter apparatus) that filters poisonous gases from the air.

In contrast to protectiVe breathing apparatuses operated by pressurized air, an escapehood does not protect against oxygen deﬁciency in the ambient air. HoWeVer, escape hoods alsoexist to Which a compressed air breathing apparatus can optionally be connected. As a result ofthe oVerpressure that is then generated in the escape hood, it does not have to be entirely closedoff relatiVe to the Wearer. In addition, this makes it possible to supply a person engaged in arescue operation With fresh breathing air.

Typically, the escape hoods are carried along packed, and are unpacked and put on only When needed. Here, in the prior art, packages made of cardboard or paperboard, barrier layer pouches, and vacuum packages made of aluminum are known. The escape hoods thus packagedare accommodated in a (belt) holster so that they can be carried along comfortably.

The disadvantage of the use of paperboard or cardboard is that these materials becomedamaged in contact With moisture. Often, the customer already throws the escape hood awayafter a single contact With Water for fear of mold development. Moreover, in the case of acardboard package, there is insuff1cient protection against the penetration of dust and soot. Anadditional disadvantage is the large-volume and rigid geometry of the cardboard.

In the case of barrier layer pouches, in particular vacuum packages made of aluminum,the problem is that it is impossible to visually check the escape hood Without destroying thepackage. Damage to the barrier layer pouch is often detected only late. This leads to the filterbeing damaged if the barrier layer pouch is damaged, so that, in an emergency, the ﬁlterperformance is no longer entirely available or is completely absent. On the one hand, the filter isin an exchange With gases, so that it Works as a ﬁlter. On the other hand, the filter materialbecomes enriched With moisture, Which reduces its performance capacity. In practice, in order todetect damage, one checks the Water vapor perrneability of the barrier layer pouch, for example,by Weighing. However, this is technically complicated and expensive.

The object of the invention therefore is to provide an escape hood device With an escapehood in a protective cover, Wherein the protective cover reliably packages the escape hood untilits use, and Wherein a simple checking of the escape hood is possible. The escape hood deviceshould be compact, light, soft and inexpensive. In addition, in an emergency, the escape hoodshould be ready for use in the most convenient, intuitive and rapid manner.

The main features of the invention are indicated in the characterizing part of Claim l.

Designs are the subject matter of Claims 2 to 12.

In an escape hood device With an escape hood in a protective cover, Wherein the escapehood comprises a ﬂexible head hood With an integrated, ﬂexible viewing Window and a filter,Wherein the filter has a filter inlet opening Which is arranged on the outside of the flexible headhood, and a filter outlet opening Which leads into the interior of the ﬂexible head hood, theinvention provides that the protective cover is connected to at least one ﬁlter plug, Wherein thefilter plug(s) is/are inserted into the ﬁlter in an extractable manner, and it blocks or they blockthe activation of the filter.

It is advantageous here that, even in the case of damage to the protective cover, the filterperforrnance does not decrease. This is reliably prevented by the filter plugs. The blocking of theactivation of the filter is understood to mean the prevention of any reduction in the perforrnanceof the ﬁlter, Which is based on active f1ltering processes or chemical filter reactions. Thus, afunctional separation is achieved between protection from dust and moisture of the entire escapehood by the protective cover, and protection of the ﬁlter by the filter plug. Here, the filter plugsshould enable the activation of the catalyst When they are pulled, in particular When they arepulled out of the filter. Expensive tests for damage in the protective cover in order to check thestate of the ﬁlter can be dispensed With. Moreover, the ﬂexible head hood should be made of acoated fabric, for example, plastic-coated textiles or a plastic of loW ﬂammability. Thesematerials are light and can be stored compactly.

Due to the connection of the protective cover to the filter plug(s), it is achieved that thelatter can be pulled out at the time of removal from the protective cover, Without additionalhandles. Therefore, a variant of the escape hood device also provides that the ﬁlter plug(s)enable(s) the activation of the ﬁlter When the escape hood is pulled out of the protective cover.

Accordingly, a simple and intuitive operation is possible, With, so to speak, automatic activation of the ﬁlter at the time of removal from the protective cover. At the same time, the connectionand thus the escape hood device itself can be manufactured cost effectively.

According to a more detailed design of the escape hood device, it is provided that thefilter plug(s) close the filter inlet opening and the filter outlet opening in a gas-tight manner. Inthis way, filter media located in the interior of the filter are protected from outside inﬂuences, inparticular from the entry of air and ﬂuid.

A particularly preferable embodiment of the escape hood device is one in which two ﬁlterplugs are provided, wherein one of the filter plugs is arranged in the filter inlet opening whichforms a plug seat for this filter plug, and wherein this filter plug can be pulled out in the directionof the outside of the ﬂexible head hood, and wherein the other ﬁlter plug is arranged in the filteroutlet opening which forms a plug seat for this ﬁlter plug, and wherein this ﬁlter plug can bepulled out in the direction towards the interior of the ﬂexible head hood. In this way, simple andintuitive pulling directions are predetermined. The escape hood is preferably packaged in theprotective cover in such a manner that the neck opening is arranged radially around the filter.The inner valve plug is thus uncovered at the time of removal and can be simply removed.

Here, the ﬁlter plugs should each be connected with a strap to the protective cover. It ispreferable that one strap is longer than the other, so that first one valve plug is pulled out andsubsequently the second valve plug is pulled out, in particular after manual alignment of thepulling direction. This prevents the valve plug from becoming caught in the head hood. Inaddition, the reduction to few pulling directions, in particular to a single pulling direction forpulling out the valve plug is convenient to handle.

A particularly simple removal of the plug can be achieved if one or both valve plugs comprise, on the outside, a ﬂat plastic plate as fastening means to which the strap is attached. As a result, the lever arm is larger in order to separate the valve plug from the plug seat. In addition,the plastic plate can be used as gripping mean even With gloves in order to be able to directlygrip the valve plug and pull it out.

Preferably, the ﬁlter plugs are designed in the forrn of a disk With a peripheral groove.The result is a ﬂat compact construction. The plastic plates can also be arranged ﬂat on the filterhousing.

In a special design of the escape hood device, the filter has a catalyst, and the filterplug(s) block(s) the activation of the catalyst. Catalysts are particularly sensitive and, in the caseof contact With air, lose their filter perforrnance. In addition, catalysts become saturated Withmoisture, Which can drastically reduce the filter perforrnance.

In an optional variant, the catalyst is a Hopkalite. Using it, the conversion of poisonouscarbon monoxide (CO) to relatively harrnless carbon dioxide (C02) by (atmospheric) oxygen(Og) via oxidation is possible. Hopkalite is the term for mixed catalysts that consist, in particular,of manganese dioxide and copper(II) oxide. In addition, they can contain other metal oxides, forexample, cobalt oxides and silver(I) oxide. Examples of compositions are 60% MnOg / 40% CuOor 50% MnOg / 30% CuO / 15% CoO and 5% AggO. In addition, hopkalites catalyze theoxidation of various organic compounds at increased temperature (200-500 °C).

Preferably, the ﬁlter or the catalyst is designed so as to be exchangeable. As a result, theescape hood can be retumed to a functional state in a cost effective manner after use or afterexpiration of the minimum useﬁJl life.

Optionally, the ﬁlter can comprise a particle filter. By means of said particle filter, thebreathing in of dirt and soot particles is prevented. In order to also protect an optional catalyst, it is possible to position the particle ﬁlter upstream of the catalyst in the direction from the outside to the interior of the ﬂexible head hood. In particular, the particle filter can include ﬁlter paper.As construction, ring filters are particularly suitable as particle filter.

Furthermore, in a more detailed design of the escape hood device, it is provided that theprotective cover is connected via at least one strap to the ﬁlter plug(s). The pulling strap thenalloWs the user to recognize the pulling direction on the valve plug and to pull on the valve plugin an optimal direction. In addition, removing the escape hood from the protective cover andpacking the escape hood With the protective cover are made possible in a convenient manner,Which simplifies the manufacture or also a filter replacement. The strap is preferably made ofTPU (Desmopan).

To ensure that the protective cover can be closed in a sealing manner, the connectionbetween the protective cover and the filter plug(s) should be in the interior of the protectivecover.

A particularly long-lived and sealing protection of the filter is achieved in a specialembodiment according to Which the ﬁlter plug(s) consist(s) substantially or entirely of butyl. Inparticular, butyl plugs prevent penetration of moisture particularly Well. In this manner, aminimum useﬁal life of 6-8 years can be achieved.

In a special design of the escape hood device, the protective cover is a ﬂexible protectivepouch. Such a protective pouch is compact, light and adapted to the content and thesurroundings. Accordingly, it does not cause pressure pain and moreover is not damaged even ifexposed to force from the outside.

The protective cover is preferably Welded. As a result, it seals particularly Well against dust particles and moisture.

According to a special design, the protective cover is a plastic cover, preferably f1lm-based. Protective covers prevent penetration of dust particles and humidity in a particularly goodand lasting manner.

In order to enable a visual check of the escape hood, it is provided in a special variant ofthe escape hood device that the protective cover is transparent.

Moreover, in a more detailed design, it is provided that the protective cover comprises apressure compensation valve. With it, a pressure compensation is possible, and the protectivecover does not inﬂate and burst even at high temperatures. ln addition, the pressurecompensation valve should be a one-Way valve that allows a ﬂuid, in particular gas, to ﬂoW outof the protective cover. Preferably, the pressure compensation valve is an overpressure valve. Asa result, the pressure compensation occurs only starting at a deﬁned pressure, and the over-pressure valve prevents an undesired infloW of gas or moisture into the protective cover in aparticularly reliable manner.

An addition to the escape hood device provides that the escape hood With the protectivecover is arranged extractably in a f1reproof holster. The holster protects the protective cover andthe escape hood contained therein from ﬂames. In addition, it enables the escape hood to becarried along conveniently in the protective cover. The holster preferably protects the protectivecover against contact With sharp-edged objects in particular. For this purpose, the holster consistssubstantially of nylon. According to a special design, the holster has a closable receiving spacefor the escape hood in the protective cover. ln this manner, the protective cover is protected allaround, and the escape hood cannot fall out of the holster. ln a more detailed design, the escape hood has an inner mask that can be placed over the mouth and the nose and is air-tight, Wherein the f1lter leads out via the f1lter output opening and through the inner mask to the outside. With the inner mask, the position of the escape hood canbe determined correctly. In addition, the breathing air is supplied directly Via the ﬁlter. It is notcritical that gases penetrate easily into the escape hood. Comfortable breathing during prolongeduse is achieved if the inner mask comprises an exhalation Valve. Said exhalation Valve shouldlead, in particular, past the ﬁlter. In this Way, the air resistance of the filter does not haVe to beoVercome during exhalation Valve. In addition, the filter performance of the ﬁlter is not reducedby the air that is exhaled. To preVent the accumulation of carbon dioxide in the interior of theescape hood, the exhalation Valve should lead out on the outside of the ﬂexible head hood.

So that the escape hood can be packed compactly, adapts to the head to the Wearer, andchannels the respiration air, the inner mask should haVe a rubber layer. High Wearing comfort isachieVed if a cloth fabric layer is proVided in addition.

Furthermore, the handling of the escape hood is particularly simple if elastic banding isproVided. In particular, this banding should be connected to the inner mask and run by behind thehead. An additional elastic banding is proVided preferably in the neck area, in order to preVentpenetration of smoke and soot. If the banding is implemented as an inner banding, it is protectedinside the escape hood against outside inﬂuences such as heat.

An additional optional addition to the escape hood can consist of a pressurized airconnection that leads into the ﬂexible head hood. If a pressurized air respirator is connected, anoVerpressure is generated in the escape hood and the pressurized air respirator does not haVe tobe closed off entirely relatiVe to the Wearer. In addition, this makes it possible to supply a personengaged in a rescue operation With fresh breathing air. MoreoVer, the pressurized air connection should lead, in particular, into the inner mask. Preferably, an oVerpressure ValVe is arranged in the pressurized air connection, so that nothing can penetrate if no pressurized air respirator is connected.

Additional features, details and advantages of the invention result from the text of the claims as well as from the following description of embodiment examples in reference to the drawings. In the drawing: Figure 1 shows a diagrammatic side view of an escape hood that has just been taken out of a protective cover; Figure 2Figure 3Figure 4 Figure 5 shows a side view of an escape hood with partial sections;shows a front view of an escape hood;shows a front view of a f1lter; and shows a diagrammatic representation of an escape hood device, in which an escape hood is arranged in a protective cover.

In Figure 1, an escape hood device 1 can be seen in a diagrammatic side view. An escape hood 10 is shown in a half-removed position relative to a protective cover 50. The escape hood device 1 thus comprises an escape hood 10, which was arranged initially or in a storage state in the protective cover 50 shown (compare with Figure 5), according to the representation of Figure 1, but pulled out of said protective cover. The escape hood 10 is in part still folded up. Except for this difference in arrangement, the description pertaining to Figure 1 also applies to Figure 5.

In addition, the removed and unfolded escape hood 10 is represented in greater detail in Figures 2 and 3, namely, in Figure 2 in a side view with partial sections and in Figure 3 in a front view. The explanations pertaining to Figure 1 conceming the escape hood 10 therefore apply accordingly to Figures 2 and 3.

According to Figures 1, 2, 3, 5, the escape hood 10 has a flexible head hood 11 With anintegrated, ﬂexible VieWing Window 12 and a ﬁlter 20.

Figure 4 shoWs a front View of the filter 20, and the explanations pertaining to Figure 1concerning the characterizing features of the filter 20 apply accordingly to Figure 4.

As can be seen in Figures 1, 2, 3, 4, 5, the filter 20 has a ﬁlter inlet opening 15 Which isarranged on the outside 17 of the ﬂexible head hood 11, and a ﬁlter outlet opening 16 (Visibleonly in Figures 1 and 2) Which leads into the interior 18 of the ﬂexible head hood 11 (compareWith Figure 2). The filter inlet opening 15 and the filter outlet opening 16 are forrned, inparticular, in a f1lter housing 23, in Which a catalyst 19 is arranged. This catalyst 19 is Hopkalite.In addition, the ﬁlter 20 contains a particle f1lter 14 With a ﬁlter paper. It is designed as ringfilter.

The particle filter 14 is placed upstream of the catalyst 19 in the direction from theoutside 17 into the interior 18 of the ﬂexible head hood 11.

According to Figures 1, 2, 3, 5, the ﬂexible head hood 11 consists either of a coatedfabric, for example, plastic-coated textiles or a plastic of loW ﬂammability. An elastic banding 32is incorporated in the ﬂexible head hood 11 (compare Figure 2). With this banding, the escapehood 11 can be put ﬁrrnly on the head, so that the mouth, nose and eyes are positioned correctlyrelatiVe to the escape hood 11. According to Figures 2, 3 and 5, additional elastic banding 33 isprovided around a neck opening 13 in the ﬂexible head hood 11. The bandings 32, 33 are eachdesigned as inner banding, i.e., lying protected from ﬂames on the inner side of the ﬂexible headhood 11.

In particular, in Figure 2, it can be seen that the escape hood 10 comprises an inner mask 30 Which can be placed on the mouth and nose and is airtight. Here, the ﬁlter 20 leads Via the f11ter out1et opening 16 and through the inner mask 30 into the interior 18 of the escape hood 10.The inner mask 30 has an air-tight rubber 1ayer as We11 as a c1oth fabric 1ayer. At 1east onebanding 32 is f1rm1y secured to the inner mask 30 and 1ed around the back of the head area(compare With Figure 2).

According to Figures 1, 2, 3 and 5, the inner mask 30 additiona11y comprises aneXha1ation Va1Ve 31, going past the f11ter 20 and 1eading out on the outside 17 of the ﬂexible headhood 11. In particular, the exha1ation Va1Ve 31 points geodetica11y doWnWard if the Wearer is in anorrna1 upright position. In this Way, accumu1ating ﬂuid can be discharged.

The ﬁ1ter in1et opening 15 forms a p1ug seat 24 for a f11ter p1ug 21. This f11ter p1ug 21 canbe pu11ed out in the direction towards the outside 17 of the ﬂexible head hood 11. According toFigures 1 and 2, the f11ter out1et opening 16 forms a p1ug seat 25 for a second ﬁ1ter p1ug 22. Thesecond f11ter p1ug 22 can be pu11ed out in a direction 1eading into the interior 18 of the ﬂexiblehead hood 11. In this position, the two f11ter p1ugs 21 , 22 b1ock the actiVation of the f11ter 20, inparticu1ar, of the cata1yst 19, by c1osing the ﬁ1ter in1et opening 15 and the ﬁ1ter out1et opening 16in a gas-tight manner. For this purpose, the ﬁ1ter p1ugs 21 , 22 are made of buty1.

As one can see in the partia1 section in Figure 1, the f11ter p1ugs 21 , 22 are each formed inthe shape of a disk and With periphera1 grooVe. The resu1t is a ﬂat compact construction. On theoutside, the ﬁ1ter p1ugs 21, 22 each haVe a fastening means 26, 27 to Which a strap 51, 52 isattached and Which is formed as a ﬂat, round p1astic p1ate. These p1astic p1ates extend ﬂat oVerthe f11ter housing 23.

According to Figures 1 and 5, the straps 51, 52 are connected to the protectiVe cover 50.

According to Figure 1, one strap 52 is 1onger than the other strap 51 , so that first the Va1Ve p1ug 11 21 with the shorter strap 51 is pulled out, and subsequently, in particular after manual alignmentof the pulling direction, the second valve plug 22 is pulled out.

As can be seen in Figures 1, 5, the protective cover 50 is connected via the two straps 51 ,52 in each case to a filter plug 21, 22. In the starting position according to Figure 5, theconnection between the protective cover 50 and the filter plug 21, 22, namely the straps 51 , 52 islocated in the interior of the protective cover 50. The straps 51 , 52 according to Figure 1 aresufficiently long that the escape hood 10 can be entirely pulled out of the protective cover 50without any tensile load on the straps 51, 52.

If the escape hood 10 is pulled out further from the protective cover 50 or away from saidprotective cover, as represented in Figure 1, the filter 20 is activated by pulling on the filter plugs21, 22 by means of the straps 51 , 52, to the point that said filter plugs have been removed fromtheir respective plug seats 24, 25. They are then attached to the protective cover 50 and can beleft behind at the deployment site.

The protective cover 50 according to Figures 1 and 5 consists in each case of a ﬂexibleprotective pouch. Said protective pouch is made of a transparent plastic or a transparent plasticfilm and is welded together according to Figure 5, and opened according to Figure 1, for thepurpose of which a tear corner 54 is provided (see Figure 5). A pressure compensation valve 53is integrated in the protective cover 50, allowing a ﬂuid, in particular, gas, to ﬂow out of theprotective cover 50. In particular, this pertains to a one-way valve as well as to an overpressurevalve. It should be noted that the protective cover according to Figure 5 can also be designed tobe considerably smaller. For this purpose, the ﬂexible portions of the escape hood 10 would have to be assembled more strongly. 12 The invention is not limited to one of the above-described embodiments, but can bemodified instead in numerous Ways.

Thus, among other possibilities, the escape hood 10 With the protective cover 50 can bearranged in a ﬁreproof holster in a removable manner. This holster is provided With a beltfastening means, for example, a belt loop or a clip. Preferably, the holster consists substantiallyof nylon. Here, the holster should form a closable receiving space for the escape hood in theprotective cover.

All the features and advantages arising from the claims, the description and the draWing,including construction details, spatial arrangements and process steps, can be essential to the invention both individually and also in all the various combinations. 13 LIST OF REFERENCE NUMBERS 1 Escape hood device 10 Escape hood 1 1 Flexible head hood12 Viewing Window 13 Neck opening 14 Particle ﬁlter 15 Filter inlet opening16 Filter outlet opening17 Outside (head hood)18 Interior (head hood)19 Catalyst 20 Filter 21 Filter plug 22 Filter plug 23 Filter housing 24 Plug seat 25 Plug seat 26 Fastening means 27 Fastening means 14 31 32 33 Inner maskExhalation ValveBanding (head) Banding (neck) Protective cover Strap Strap Pressure compensation Valve Tear corner

Claims

1. An escape hood device (1) With an escape hood (10) in a protective cover (50),Wherein the escape hood (10) comprises a ﬂexible head hood (11) With an integrated, f1exib1eviewing Window (12) and a f11ter (20), Wherein the ﬁ1ter (20) has a f11ter in1et opening (15) Whichis arranged on the outside (17) of the ﬂexible head hood (11), and a ﬁ1ter out1et opening (16)Which 1eads into the interior (18) of the ﬂexible head hood (11), characterized in that theprotective cover (50) is connected to at 1east one ﬁ1ter plug (21 , 22), Wherein the ﬁ1ter p1ug(s)(21, 22) is (are) inserted into the f11ter (20) in an extractab1e manner, and it blocks or they blockthe activation of the f11ter (20).

2. The escape hood device (1) according to c1aim 1, characterized in that the f11ter p1ug(s)(21, 22) enab1e the activation of the ﬁ1ter (20) When the escape hood (10) is pu11ed out of theprotective cover (50).

3. The escape hood device (1) according to either c1aim 1 or c1aim 2, characterized in thatthe f11ter p1ug(s) (21, 22) c1ose the f11ter in1et opening (15) and the f11ter out1et opening (16) in agas-tight manner.

4. The escape hood device (1) according to any one of the preceding c1aims,characterized in that tWo ﬁ1ter p1ugs (21, 22) are provided, Wherein one of the ﬁ1ter p1ugs (21) isarranged in the ﬁ1ter in1et opening (15) Which forrns a plug seat (25) for this f11ter p1ug (21), andWherein this f11ter p1ug (21) can be pu11ed out in the direction of the outside (17) of the ﬂexiblehead hood (11), and Wherein the other f11ter p1ug (22) is arranged in the ﬁ1ter out1et opening (26)Which forrns a p1ug seat (26) for this f11ter p1ug (22), and Wherein this ﬁ1ter p1ug (22) can be pu11ed out in the direction of the interior (18) of the ﬂexible head hood (1 1). 16

5. The escape hood device (1) according to any one of the preceding c1airns,characterized in that the protective cover (50) is connected via at 1east one strap (51) to the ﬁ1terp1ug(s) (21, 22).

6. The escape hood device (1) according to any one of the preceding c1airns,characterized in that the connection between the protective cover (50) and the ﬁ1ter p1ug(s) (21,22) is 1ocated in the interior of the protective cover (50).

7. The escape hood device (1) according to any one of the preceding c1airns,characterized in that the ﬁlter p1ug(s) (21, 22) consist(s) substantia11y or entire1y of butyl.

8. The escape hood device (1) according to any one of the preceding c1airns,characterized in that the protective cover (50) is a ﬂexible protective pouch.

9. The escape hood device (1) according to any one of the preceding c1airns,characterized in that the protective cover (50) is a p1astic cover.

10. The escape hood device (1) according to any one of the preceding c1aims,characterized in that the protective cover (5 0) is transparent.

11. The escape hood device (1) according to any one of the preceding c1aims,characterized in that the protective cover (50) comprises a pressure compensation va1ve (53).

12. The escape hood device (1) according to any one of the preceding c1aims,characterized in that the escape hood (10) With the protective cover (5 0) is arranged in a ﬁreproof ho1ster in a removable manner. 17