Abstract:
For an automobile there is provided a fire extinguisher which is rapidly activatable in combination with a device for cutting a seatbelt and a device for breaking open a windshield.

Description:
BACKGROUND OF THE INVENTION 
     The present invention is suitable for a fire extinguisher gas ejector. This invention relates to an fire extinguisher gas ejector comprising a safety member which can be taken out easily and promptly so that a seal of a loaded small gas cylinder can be quickly pierced, whereupon a jet of an extinguishing gas is promptly emitted, for an early fire extinction. The invention also comprises a device for an emergency escape from a vehicle, which device cuts a seat belt promptly and breaks a windshield reliably in such event as a fire in the vehicle or collision, to facilitate prompt escape from the vehicle. Thus, a device exclusive to escape is unnecessary. Devices for fire extinguishing and escaping are thereby constituted rationally. The invention also comprises a control valve which prevents a waste of the extinguishing gas after the seal is pierced and jets the fire extinguishing gas to a fire origin surely and accurately in fire fighting. 
     Popular fire extinguishers placed at homes or offices are usually large-sized and heavy so that they require physical strength and are hard to use. 
     To solve above-mentioned problems, a variety of small and lightweight fire extinguishers that can be used simply have been proposed. 
     For example, of the simple fire extinguishers, a gas cylinder is disposed in a pipe body, a cover is put thereon, a plate-shaped nozzle forming a jetting port at the lower end is attached, a pusher guide is attached on the top of the pipe body, and a pusher having a needle on the guide is attached slidably. A cylinder receiver is attached inside of the pusher guide, and a screw of the mouth part of the gas cylinder is screwed up for the receiver. Usually, a safety plate is plugged in the pusher to stop movement thereof. 
     Then, the safety plate is removed for putting out a fire and the outside of the pusher is pressed with a hand and pushes inwardly. Then a sealing plate is pierced by the needle which moves toward the gas cylinder side. The gas which gushes from the cylinder is guided to inside of a shaft from the inside of the pipe so as to jet the gas from a jetting port which is positioned at the opposite side with the seal piercing position. (For example, see, Patent Document 1) 
     However, the above-mentioned fire extinguisher has following problems. An operation of the safety plate may be confusing when putting out a sudden fire and small grasping portion makes it difficult to pull out the safety plate. After the seal is pierced, the jetting gas is guided to a space between the pipe body and the gas cylinder. Since the gas is jetted from the jetting port which is positioned at the opposite side of the seal piercing point, pressure, speed and an effect in fire fighting is attenuated, making initial fire fighting incomplete. Moreover, the jetting gas remains inside of the pipe body after the seal piercing so that some amount of gas remains unused in the pipe body. 
     On the other hand, the conventional simple fire extinguishers are usually placed at homes or offices, however, the demands to place them in vehicles is on the rise to cope with a fire in vehicles nowadays. 
     In such cases, it is to be desired for a simple fire extinguisher used in a vehicle to combine other functions rationally in addition to the function of a fire extinguisher. 
     Due to such demands recently, it has been proposed to equip a car with an emergency escape device so as to be able to escape from a car in case of an emergency, such as collision. 
     The escape device is formed in shape of a bar and is provided with a cutter for cutting a seat belt at one end. A hammer capable of breaking a windshield is provided at the other end or the same end and the device is set in a holder. It is installed adjacent a driver&#39;s seat or other appropriate place in a car to prepare for an emergency. (For example, see, patent documents 2 and 3.) 
     One such emergency escape device is inconvenient for emergency use because a cutter has to be extracted from its storage handle. Another such emergency escape device has following problem. The cutter is arranged with the edge fixed downwardly in a generally V-shaped groove between a periphery of a body and a guide which protrudes toward a head part of the body. When cutting a seat belt, a side of the seat belt contacts the edge of the cutter at generally right angles. Therefore, the seat belt cannot be cut promptly and smoothly.
     Patent Document 1: Japanese Patent Publication No. 2890097   Patent Document 2: Utility Model Registration No. 3007514   Patent Document 3: Japanese Patent Publication No. 2873001   

     SUMMARY OF THE INVENTION 
     It is an object of the present invention to solve the mentioned problem and provide a fire extinguisher gas ejector which is suitable for a fire extinguisher used in car. This invention provides a fire extinguisher gas ejector in which the safety member is easily and quickly removed for piercing the seal of the charged small gas cylinder and jetting the gas properly for early fire extinction. This invention also comprises a device for emergency escape from a vehicle, which device cuts a seat belt promptly and breaks the windshield reliably in such event as a fire in the vehicle or a collision, and facilitates a prompt escape from the vehicle. The escape device can rationally and safely be attached to the gas cylinder. The invention includes a control valve which prevents a waste of the extinguishing gas and jets the fire extinguishing gas to an origin of a fire surely and accurately in fire fighting. 
     The present invention in a first aspect thereof comprises a gas cylinder filled with extinguishing gas, sealed with a seal and provided with a mouth part removably attached thereto; 
     a cylinder holder formed therein with a through hole and a nozzle hole; 
     a piercing pipe which is slidably mounted onto the cylinder holder, biased to upwardly move, and provided at one end thereof with a tip part capable of piercing the seal; 
     a piercing member coupling with the other end of the piercing pipe; 
     a safety member capable of restraining an operation of the piercing pipe; and 
     a control valve movably provided in a communicating passage between the through hole and the nozzle hole to be able to block the communication passage by a move of the control valve. The control valve stops emitting of the extinguishing gas from the gas cylinder after the seal is pierced. In addition, it prevents a waste of extinguishing gas and enables jetting of the gas to an origin of a fire accurately. Therefore, effective use of the extinguishing gas and initial fire fighting can be achieved. Moreover, the structure is simplified by reducing the number of the parts so that a small and lightweight fire extinguisher gas ejector can be produced easily and at low cost. 
     In a second aspect of the present invention, the through hole has a small-caliber valve hole and the valve hole is slidably provided with the control valve. The gas cylinder is structured rationally to attempt to reduce a number of parts and to make a structure of the control valve simpler. Thus, it is produced easily and at a low cost. 
     In a third aspect of the present invention, the control valve has a periphery on which at least two O-rings are mounted apart from each other, the valve hole is air-tightened with one of the O-rings, before or when the seal is pierced by the piercing pipe, and either one of the O-rings is positioned at an inner opening of the nozzle hole to be able to close the nozzle hole, thereby making the constitution of the control valve simpler. The extinguishing gas which jets from the nozzle hole before/when piercing the seal is prevented and a waste of the extinguishing gas is stopped. 
     In a fourth aspect of the present invention, the piercing pipe is returned to an original position under pressure of the extinguishing gas jetted from the gas cylinder, and one of the O-rings is positioned at the inner opening of the nozzle hole to be able to close the nozzle hole. Then, after the seal is pierced, the extinguishing gas which uselessly jets can be stopped and a waste of the extinguishing gas is prevented. 
     In a fifth aspect of the present invention, the extinguishing gas released from the gas cylinder is able to stagnate in the through hole after the seal is pierced, thereby preventing a waste of the extinguishing gas. 
     In a sixth aspect of the present invention, the closed nozzle hole is unclosed with one of the O-rings by an operation of the piercing pipe after the seal is pierced, thereby allowing the extinguishing gas to be jetted from the nozzle hole. After the seal is pierced, when the piercing pipe is pressed with the piercing member, the extinguishing gas is jetted. 
     In a seventh aspect of the present invention, the piercing pipe has a lower part exhibiting a less descending displacement after the seal is pierced than when the seal is pierced. When the piercing member is operated after the piercing, the tip part of the piercing pipe is inserted to the opening of the sealing plate to prevent a situation which interferes with a smooth jetting of the extinguishing gas. 
     In an eighth aspect of the present invention, the safety member is arranged just below the piercing member to be able to be pulled out laterally, and the safety member which is formed integrally with a tab is arranged on the piercing member to be able to be pulled up. The safety member can be removed immediately, simply, and smoothly for emergency use. 
     In a ninth aspect of the present invention, the safety member is formed in a shape of a plate or ring. When the shape is a plate, stability is obtained when placing the piercing member. When the shape is a ring, the safety member is smaller and lighter and the safety member can be pulled out more quickly. 
     The present invention in a tenth aspect thereof comprises a gas cylinder filled with extinguishing gas, sealed with a seal and provided with an exposed bottom and a mouth part removably attached thereto; 
     a cylinder holder formed therein with a through hole and a nozzle hole; 
     a piercing pipe which is slidably mounted onto the cylinder holder, biased upwardly to move, and provided at one end thereof with a tip part capable of piercing the seal; 
     a piercing member coupling with the other end of the piercing pipe; 
     a safety member capable of restraining an operation of the piercing pipe; 
     and a hammer having a pointed part and attached to the exposed bottom of the cylinder. 
     In case of an emergency such as fire on vehicle or collision, a windshield can be broken by the hammer to facilitate escape from a vehicle quickly. Further, by installing a device for escaping with the fire extinguisher in a vehicle, a device which is exclusive to escape becomes unnecessary. Devices for both fire extinguishing and escaping can thereby be attained rationally. 
     The present invention in an eleventh aspect thereof comprises the hammer attached to the gas cylinder which is filled with the extinguishing gas. By not charging the extinguishing gas to the gas cylinder until after the hammer is attached, conventional facilities or operations for filling the gas are utilized and improvement of productivity and efficiency is realized. 
     The present invention in a twelfth aspect thereof comprises the hammer having a retaining ring attached to the exposed bottom of the gas cylinder and a hammer shaft that has a neck hooked to an inside of the retaining ring and the pointed part protruded outside the retaining ring. The hammer is structured with two members and the plating for the gas cylinder and the retaining ring is carried out after attaching the retaining ring. When plating the gas cylinder after attaching the hammer shaft, damage to the surface of the gas cylinder by the pointed part of the hammer shaft is prevented, and the hammer is attached rationally. 
     In a thirteenth aspect of the present invention, after the retaining ring is attached to the gas cylinder, the retaining ring and the gas cylinder are plated so that the plating for the retaining ring and the gas cylinder is performed safely and rationally. 
     In a fourteenth aspect of the present invention, the neck of the hammer shaft has an elastic stopper mounted thereon, and the stopper is arranged to engage with an inner opening of the retaining ring so that the hammer shaft is attached to the retaining ring securely. 
     The present invention in a fifteenth aspect thereof comprises an outer shell provided outside the cylinder holder, the seat belt introduction groove provided in a periphery of the outer shell for insertion of a seat belt therein, and a cutter arranged to face the seat belt introduction groove. In case of an emergency such as a fire in a vehicle or collision, the seat belt can be cut smoothly, enabling prompt escape from a vehicle. Further, by installing a device for cutting a seat belt on the fire extinguisher installed in a vehicle, a device exclusive for escape becomes unnecessary. The mechanism of both fire extinguishing and escaping can be structured rationally. 
     In a sixteenth aspect of the present invention, the seat belt introduction groove is arranged on the opposite side of the nozzle hole so that the extinguishing gas is jetted from the nozzle hole surely and introduction and cutting of the seat belt is performed surely. 
     In a seventeenth aspect of the present invention, the cutter is provided with a seat belt releasing part at inner side position, which moves the cut seat belt backward smoothly and speedily. Thus, the cutting can be carried out smoothly by pushing and spreading the cut part. 
     In an eighteenth aspect of the present invention, the seat belt releasing part is integrally formed with the outer shell. Therefore, the seat belt releasing part is produced easily and homogeneously. 
     In a nineteenth aspect of the present invention, the seat belt releasing part has a substantially inverted triangular cross-section taken along a direction of introducing the seat belt in the seat belt introduction groove so that the cutting can be carried out smoothly by spreading and moving the cut part of the seat belt. 
     In a twentieth aspect of the present invention, the seat belt releasing part is provided in a vicinity of a rear of the cutter and has a distal end insertable in a cut part of the seat belt, and releasing surfaces formed on opposite sides thereof to continue with the distal end for spreading and moving the cut part of the seat belt. Thus, spreading and smooth moving of the cut part are promoted. 
     In a twenty first aspect of the present invention, the outer shell is provided on a lower periphery thereof with curved concave parts disposed apart from an upper periphery of the gas cylinder. Owing to this arrangement, the fire extinguisher is easily grasped, conductive heat to the curved concave parts is prevented via spaces, and effect of low heat when the extinguishing gas is jetted can be avoided. 
     In a twenty second aspect of the present invention, the curved concaved parts are disposed on front and back sides of the lower periphery of the outer shell and have a plurality of concavo-convex parts for easy and strong grasping of the fire extinguisher. 
     The present invention in a twenty third aspect thereof comprises a piercing device loaded with the gas cylinder, a storing case accommodated in a door pocket of a car for storing the piercing device, a strap having opposite ends thereof attached to a periphery of the storing case, a middle part thereof provided with a stopper that is detachably attached to an engaging part buried in an outer surface of the door pocket, and a leading end thereof stuck out to face a driver side. Owing to this arrangement, the storing case for the piercing member is stably accommodated in a door pocket. When in use, the leading end is grasped and pulled, and then the storing case is removed easily for an immediate use. 
     The present invention in a twenty fourth aspect thereof comprises a piercing device loaded with the gas cylinder and a protective case installed at an appropriate place in a car for storing the piercing device and formed with upper and lower opening facing in opposite directions, wherein the seat belt introduction groove and piercing member emerge at the upper opening, whereas a periphery of the gas cylinder emerges at the lower opening. Upper and lower opening loosen close contact with the piercing device so that the piercing device can be taken out immediately. A seat belt can be cut with a state in which the piercing device is stored in a protective case. Moreover, an open hole is formed at the corresponding position with the nozzle hole which is located the opposite side of the upper opening so that the jetting of the extinguishing gas can be realized. 
     In the first aspect of the present invention, the communicating passage between the through hole and the nozzle hole is movably provided with the control valve and the move of the control valve is able to intermit the commutation passage. The control valve stops emitting the extinguishing gas from the gas cylinder after the seal is pierced. In addition, it prevents a waste of extinguishing gas and enables to jet the extinguishing gas to an origin of a fire. Therefore, effective use of the extinguishing gas and initial fire fighting can be achieved. Moreover, the structure is simplified by reducing the number of the parts. It is small and lightweight and it can be produced easily and at low cost. 
     In the second aspect of the present invention, the through hole has a small-caliber valve hole and the valve hole is slidably provided with the control valve. The gas cylinder is constituted rationally so that the number of parts is reduced, making the constitution of the control valve simpler. Thus, it is produced easily and at a low cost. 
     In the third aspect of the present invention, the control valve has a periphery on which at least two O-rings are mounted apart from each other, the valve hole is air-tightened with one of the O-rings, before or when the seal is pierced by the piercing pipe, either one of the O-rings is positioned at an inner opening of the nozzle hole to be able to close the nozzle hole, thereby making the constitution of the control valve simpler. The extinguishing gas which jets from the nozzle hole before/when piercing the seal is prevented and a waste of the extinguishing gas is also prevented. 
     In the fourth aspect of the present invention, the piercing pipe is returned to an original position under pressure of the extinguishing gas jetted from the gas cylinder, and one of the O-ring is positioned at the inner opening of the nozzle hole to be able to close the nozzle hole. Accordingly, after the seal is pierced, the extinguishing gas which unconsciously jets can be stopped and a waste of the extinguishing gas is also prevented. 
     In the fifth aspect of the present invention, the extinguishing gas jetted from the gas cylinder is able to be stagnated in the through hole after the seal is pierced, thereby preventing a waste of the extinguishing gas. 
     In the sixth aspect of the present invention, the closed nozzle hole is unclosed with one of the O-rings by the operation of the piercing pipe after the seal is pierced, thereby allowing the extinguishing gas to be jetted from the nozzle hole. After the seal is pierced, the piercing pipe is pressed down with the piercing member and the extinguishing gas is gushed. 
     In the seventh aspect of the present invention, the piercing pipe has a lower part exhibiting a less descending displacement after the seal is pierced than when the seal is pierced. When the piercing member is operated after the piercing, the tip part of the piercing pipe is inserted to the opening of the sealing plate to prevent a situation which interferes a smooth jetting of the extinguishing gas. 
     In the eighth aspect of the present invention, the safety member is arranged just below the piercing member to be able to be pulled out laterally, and the tab which is integrally formed with the safety member is able to be pulled up. Owing to this arrangement, the safety member can be removed immediately, simply, and smoothly to be able to cope with an emergency use. 
     In the ninth aspect of the present invention, the safety member is formed in a shape of a plate or ring. When the shape is a plate, stability is obtained when placing the piercing member. When the shape is a ring, the safety member is smaller and lighter. In addition, the safety member can be pulled out more quickly. 
     In the tenth aspect of the present invention, a hammer having a pointed part is attached to the exposed bottom of the cylinder. In case of an emergency such as fire in vehicle or collision, a windshield can be broken by the hammer and attempt escape from a vehicle. In case of an emergency such as fire on vehicle or collision, a windshield can be broken by the hammer and attempt to escape from a vehicle quickly. Further, by installing a mechanism of escaping with the fire extinguisher in vehicle, a device exclusive to escape becomes unnecessary. Mechanisms for both fire extinguishing and escaping are constituted rationally. 
     The present invention in the eleventh aspect thereof comprises the hammer attached to the gas cylinder after filling with the extinguishing gas. Without charging the extinguishing gas to the gas cylinder after the hammer is attached, conventional facilities or operations for filling the gas are utilized and improvement of productivity and efficiency is realized. 
     The present invention in the twelfth aspect thereof comprises the hammer having a retaining ring attached to the exposed bottom of the gas cylinder, a hammer shaft that has a neck hooked to an inside of the retaining ring, and the pointed part protruded outside the retaining ring. The hammer is made structured with two members and plating for gas cylinder and the retaining ring is carried out after attachment of the retaining ring. When plating the gas cylinder after attaching the hammer shaft, damage to the surface of the gas cylinder is prevented and the hammer is attached rationally. 
     In the in the thirteenth aspect of the present invention, after the retaining ring is attached to the gas cylinder, the retaining ring and the gas cylinder are plated so that the plating for the retaining ring and the gas cylinder is performed safely and rationally. 
     In the fourteenth aspect of the present invention, the neck of the hammer shaft has an elastic stopper mounted thereon, and the stopper is arranged to engage with an inner opening of the retaining ring so that the hammer shaft is attached to the retaining ring securely. 
     The present invention in the fifteenth aspect thereof comprises an outer shell provided outside the cylinder holder, a seat belt introduction groove provided in a periphery of the outer shell and capable of inserting a seat belt therein, and a cutter arranged to face the seat belt introduction groove. In case of an emergency such as fire in vehicle or collision, a seat belt can be cut smoothly and attempt to escape from a vehicle quickly. Further, by installing a mechanism of cutting the seat belt with the fire extinguisher in vehicle, an exclusive escaping device becomes unnecessary. Mechanisms of both fire extinguishing and escaping can be attained rationally. 
     In the sixteenth aspect of the present invention, the seat belt introduction groove is arranged on opposite side of the nozzle hole so that the extinguishing gas is jetted from the nozzle hole surely. Further, introduction and cutting of the seat belt is performed surely. 
     In the seventeenth aspect of the present invention, the cutter is provided therein with a seat belt releasing part, which backwardly moves the cut seat belt smoothly and speedily so that the cutting can be carried out smoothly by pushing and spreading the cut part. 
     In the eighteenth aspect of the present invention, the seat belt releasing part is integrally formed with the outer shell. Therefore, the seat belt releasing part is produced easily and homogeneously. 
     In the nineteenth aspect of the present invention, the seat belt releasing part has a substantially inverted triangular cross-section taken along a direction of introducing the seat belt in the seat belt introduction groove so that the cutting can be carried out smoothly by spreading and moving the cut part of the seat belt. 
     In the twentieth aspect of the present invention, the seat belt releasing part is provided in a vicinity of a rear of the cutter and has a distal end insertable in a cut part of the seat belt, and releasing surfaces formed on opposite sides thereof to continue with the distal end for spreading and moving the cut part of the seat belt. Thus, spreading and smooth moving of the cut part are promoted. 
     In the twenty first aspect of the present invention, the outer shell is provided on a lower periphery thereof with curved concave parts disposed apart from an upper periphery of the gas cylinder. Owing to this arrangement, the fire extinguisher is easily grasped, conductive heat to the curved concave parts is prevented via spaces, and effects of low heat when the extinguishing gas is jetted can be avoided. 
     In the twenty second aspect of the present invention, the curved concave parts are disposed on front and back sides of the lower periphery of the outer shell and have a plurality of concavo-convex parts for easy and strong grasping of the fire extinguisher. 
     The present invention in the twenty third aspect thereof comprises the piercing device loaded with the gas cylinder, a storing case accommodated in a door pocket of a car for storing the piercing device, a strap having opposite ends thereof attached to a periphery of the storing case, a middle part thereof provided with a stopper that is detachably attached to an engaging part buried in an outer surface of the door pocket, and a leading end thereof stuck out to face a driver side. Owing to this arrangement, the storing case for the piercing member is stably accommodated in a door pocket. When in use, the leading end is grasped and pulled, and then the storing case is removed easily for an immediate use. 
     The present invention in the twenty fourth aspect thereof comprises a piercing device loaded with the gas cylinder and a protective case installed at an appropriate place in a car for storing the piercing device and formed with upper and lower opening facing in opposite directions, wherein the seat belt introduction groove and piercing member emerge at the upper opening, whereas a periphery of the gas cylinder emerges at the lower opening. Upper and lower opening loosen close contact with the piercing device so that the piercing device can be taken out immediately. A seat belt can be cut with a state stored in a protective case. Moreover, an open hole is formed at the corresponding position with the nozzle hole which is located the opposite side of the upper opening so that the jetting of the extinguishing gas can be realized. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a first embodiment of the present invention showing the piercing device attached to the gas cylinder. 
         FIG. 2  is a front view of  FIG. 1  showing a state in which the seat belt is cut. 
         FIG. 3  is a left side view of  FIG. 1 . 
         FIG. 4  is a sectional view taken along the line A-A of  FIG. 3  showing a state of pulling up the tab. 
         FIG. 5  is a sectional view taken along the line B-B of  FIG. 3 . 
         FIG. 6  is an exploded perspective view showing parts of a first embodiment. 
         FIG. 7  is an enlarged longitudinal-sectional view of the cylinder holder which is applied to a first embodiment. 
         FIG. 8  is an enlarged longitudinal-sectional view of the piercing pipe which is applied to a first embodiment. 
         FIG. 9  is an enlarged sectional view showing the state of installing a hammer which is applied to a first embodiment. 
         FIG. 10  is a perspective view showing the reversed hammer which is applied to a first embodiment. 
         FIG. 11  shows a state in which a windshield of a car is broken from inside by the hammer which is applied to a first embodiment. 
         FIG. 12  is a sectional view of a first embodiment showing a state in which after the safety member is pulled out. 
         FIG. 13  is a sectional view of a first embodiment showing that the piercing member is pushed down for the seal piercing after the safety member is pulled out. 
         FIG. 14  is a sectional view of a first embodiment showing that the extinguishing gas is jetted outside by pushing down the piercing member after the seal is pierced. 
         FIGS. 15(   a ) and  15 ( b ) show a second embodiment of the present invention and is a sectional view of other embodiment of the hammer. In (a), the hammer is attached by gluing. (b) shows a state in which the hammer is insert molded with the cylinder cover and the cover is attached to the gas cylinder. 
         FIG. 16  is a front view of a third embodiment showing that the other embodiments of the seat belt introduction groove and the hammer. 
         FIG. 17  is an enlarged sectional view of a third embodiment showing a state before piercing the seal and a situation in which the seat belt introduction groove and the cutter is attached. 
         FIG. 18  is an enlarged sectional view of the third embodiment showing a state in which the seal is pierced. 
         FIG. 19  is a sectional view of the  FIG. 16  taken along the line of C-C showing enlarged seat belt releasing part applied to a third embodiment. 
         FIG. 20  is an enlarged illustration of an operation of cutting the seat belt by the seat belt releasing part. 
         FIG. 21  is an enlarged sectional view of a main part of the hammer applied to a third embodiment. 
         FIG. 22  is a perspective view showing a state in which the storing case applied to a third embodiment is installed in a car. 
         FIG. 23  is a perspective view showing the protective case applied to a fourth embodiment of the present invention. It shows the piercing device and the protective case before the piercing device is stored. 
         FIG. 24  is a perspective view of the protective case applied to a fourth embodiment showing a state in which the piercing device is stored. 
         FIG. 25  is a right side view of  FIG. 24 . 
         FIG. 26  is a sectional view of the fire extinguisher gas ejector applied to a fifth embodiment showing a state in which before the seal is pierced. 
         FIG. 27  is a sectional view of a fifth embodiment showing a state in which the seal is pierced. 
         FIG. 28  shows a state in which the extinguishing gas is jetted from the nozzle hole by operating the piercing member after the seal piercing of a fifth embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The following is description of illustrated embodiments that this invention is applied to a fire extinguisher gas ejector for in-car use which uses a cartridge gas cylinder. In  FIGS. 1 to 14 , reference numeral  1  represents a known and small gas cylinder which is charged with carbon dioxide as an extinguishing gas. A mouth part of the gas cylinder  1  is provided with a piercing device  2 . 
     The gas cylinder  1  of the embodiment requires about 40 mm in external diameter, about 130 mm in length, and about 90 ml in tare weight and is charged with carbon dioxide of about 4 MPa therein. The weight after charging is about 300 g. After charging the gas, the mouth part is sealed with the sealing plate  3  and a hammer, which is described later, is attached to a bottom. 
     A thread part  4  is formed on a periphery of the mouth part for the gas cylinder  1  and is screwed to the piercing device  2  to be fixed. 
     The seal piercing device  2  is formed in irregular tubular shape with strong and light synthetic resin. The seal piercing device  2  is composed of double pipes. One is a cylinder holder  5  which has a lower end capable of being screwed onto the thread part  4 . The other is an outer pipe or shell  6 , which has a hollow tubular shape and is arranged outside of the cylinder holder  5 . 
     The cylinder holder  5  is made of aluminum and is of virtually cylindrical shape and has an internally threaded opening  7  at the lower end capable of being screwed onto the thread part  4 . 
     The cylinder holder  5  has a through hole  8  which communicates with the opening  7  and a hole  9  which is a little smaller than the through hole  8  therein for communication therebetween in the coaxial direction. The seal piercing pipe  10 , which will be described later, is inserted slidably the through hole  8  and the hole  9 . 
     In the illustration, reference numerals  11  and  12  represent O-rings. The O-ring  11  is inserted at a step between the through hole  8  and the hole  9 . The O-ring  12  is inserted in a annular groove between the screw hole  7  and the through hole  8 . 
     The middle to upper periphery of the cylinder holder  5  has a jetting port  13  which constitutes a jetting flow path together with the through hole  8  and a nozzle hole, which will be described later. A nozzle hole  14 , which communicates with the through hole  8 , is formed in the inner part of the jetting port  13 . 
     A pair of positioning pins  15  is protruded from the outer periphery of the cylinder holder  5  to the diameter direction and the pins  15  are fitted to the pin holes that are formed on inner surfaces of outer pipe pieces, which will be described later. Outer pipe pieces  6   a ,  6   b  are connected to predetermined positions to prevent dislocation of guide holes  31   a ,  31   b , connecting surfaces  38   a ,  38   b , and recessed grooves  38   a ,  38   b.    
     In this embodiment, a pair of recess holes  16  are formed at the positions of 90 degree from the jetting port  13  on the periphery of the cylinder holder  5 . The positioning pins  15  are pressed in the recess holes  16  and the ends are protruded from the periphery. 
     The piercing pipe  10  is formed in a shape of bar by processing aluminum bar. The upper half of the piercing pipe  10  is slidably inserted to the hole  9  and a large-diameter part  10   a  is formed on the middle part. The large-diameter part  10   a  is slidably inserted to the through hole  8 . In drawings, reference numeral  17  is an annular groove formed on the large-diameter part  10   a . Reference numeral  18 , which is an O-ring, is attached to the annular groove  17 . 
     A needle tube  19 , which is made of steel tube, is fixed to the lower end of the seal piercing pipe  10  and the end of  19  is diagonally cut permitting the tip part  19   a  to pierce the sealing plate  3 . 
     In this case, without providing the seal piercing pipe  10  and the needle tube  19  separately, these parts can be integrally constituted. Then, a number of parts are reduced and the structure becomes simpler. Accordingly, the piercing pipe  10  only has to be equipped with the tip part  19   a  at one end. 
     In drawings, reference numeral  20  represents a spring which is inserted between the end of the piercing pipe  10  and the sealing plate  3 , and biases the piercing pipe  10  to move upwardly with the resilience. 
     The piercing pipe  10  has a contracted square shank  21  at upper end. The square shank  21  is fitted to a square hole  22   a  which is formed on the bottom surface of a seal piercing knob  22 , which is the seal piercing member, and they are fixed together by using adhesive. In this case, instead of using adhesive on the square shank  21  and the square hole  22   a , it is possible to fix them by screwing from the top of the seal piercing knob  22  or using a retaining ring. 
     The seal piercing knob  22  is formed in a shape of virtually elliptical plate with synthetic resins, on which the top surface is gently recessed so as to accommodate a finger. A chevron-shaped rib  23  is projected on the front peripheral edge and a knob of a tab  24  is arranged overlapped on the base side of the rib  23 . 
     The tab  24  is formed by bending the synthetic resin rod, which has the same quality as of the piercing device  2 , into a virtually triangular shape, and the knob  24   a  is formed by bending the apex diagonally upward. 
     Then, the knob  24   a  is disposed on the middle part of top surface of the seal piercing knob  22  to accommodate placing a finger  25  thereon. The knob  24   a  can be pulled up with a connecting part  26 , which protruded from back end, as a fulcrum. 
     The connecting part  26  is formed diagonally downward, with the lower end connected to the rear end of the safety plate  27 . 
     The safety plate  27  is formed with the same member as the tab  24  and of an elliptical shape which is little larger than the tab  24 . 
     The notch  28  is formed in the front-back direction on the half front of a safety plate  27 , and a notch  28  is engaged with upper part of the seal piercing pipe  10 . 
     Specifically, the safety plate  27  is usually inserted between the seal piercing knob  22  and the upper surface of the outer pipe  6 . The piercing pipe  10  is engaged with the notch  28  to prevent pulling out the safety plate  27  and pressing the seal piercing tab  24 . When the tab  24  is raised and pulled up, the safety plate  27  can be pulled backwardly along the notch  28 . 
     On the other hand, the outer pipe  6  is constituted with two pieces that are split in the axial direction along a jetting port guide, which will be described later, and the cylinder holder  5  is stored therein. Connecting surfaces  29   a ,  29   b , are integrally attached as one with heat welding. In such a case, the outer pipe pieces  6   a ,  6   b  can be joined together by screwing or using adhesive instead of heat welding. 
     Irregular-shaped engaging holes  30   a ,  30   b  capable of storing the cylinder holder  5  are symmetrically formed on the connecting surfaces  29   a ,  29   b  of the outer pipe pieces  6   a ,  6   b . One side of the connecting surfaces  29   a ,  29   b  has guide holes  31   a ,  32   b  that constitute a funnel-like jetting port guide  31 . 
     In the drawings, reference numerals  32   a ,  32   b  represent pin holes that are formed on the inner surfaces of the engaging holes  30   a ,  30   b  permitting the positioning pin  15 ,  15  to be inserted. 
     A chevron-shaped protrusion  33  is formed in the axial direction on the back periphery of the outer pipe  6 , and a seat belt guide  34  is protruded outside of the protrusion  33  obliquely downward from the upper end of the outer pipe  6 , virtually parallel with the protrusion  33 . 
     A seat belt introduction groove  36  for insertion of a seat belt  35  is formed between the seat belt guide  34  and the protrusion  33 . 
     A cutter  37  is arranged at upper part of the introduction groove  36 . An edge of the cutter  37   a  is vertically arranged, and acutely arranged with respect to the direction of introducing the seat belt  35 . The seat belt  35  can be cut at sharp angle with respect to a direction of the thickness of the seat belt  35 . 
     The seat belt guide  34  is constituted by joining guide pieces  34   a ,  34   b  that extend from outer pipe pieces  6   a ,  6   b . Concave grooves  39   a ,  39   b , that are virtually parallelogram shape, are formed in axial direction over the joining surfaces  38   a ,  38   b  and the connecting surfaces of  29   a ,  29   b  of the outer pipe pieces  6   a ,  6   b . The cutter  37  is stored in the concaved groove  39   a ,  39   b.    
     In the drawings, a pin  40  which protrudes from the recessed grooves  39   a ,  39   b  is inserted in a fitting hole  41  formed on the cutter  37  to prevent displacement. 
     The outer pipe  6  has lower periphery on which the front and back sides are concavely curved, and the cross sectional view is an elliptical shape. Curved concave parts  42 ,  43  respectively have a concave part  44  and a convex part  45  that form curved patterns for to make friction so that the part can easily or firmly grasped. 
     The outer pipe  6  has skirt-like peripheries on lower part and the skirt-portions are arranged apart at the outside of the periphery of the shoulder part. These spaces block heat conduction which lowers a temperature of the surface of the gas cylinder  1  when the extinguishing gas is jetted. Thus, the temperature drop of the curved concaved parts  42 ,  43  is inhibited. 
     The gas cylinder  1  has a sheet  46  made of heat insulating film on the middle periphery with printed pictures thereon that show how to use of the fire extinguisher gas ejector. The heat insulation action is obtained when putting out a fire. 
     In embodiment, the film made of synthetic resin is used for the sheet  46 , the film is attached by shrinking with predetermined temperature on the surface of the gas cylinder  1  which is filled with carbon dioxide. 
     The hammer  47  having the pointed part is attached to the exposed bottom of the gas cylinder  1 , and a hammer  47  is molded by sintering to a predetermined hardness with a prescribed powder metal. 
     The hammer  47  is shaped in a thin, concavely or convexly curved plate capable of contacting the bottom of the gas cylinder  1 . A pointed part  48 , which is a cone shape, is protruded from the center of the convex surface side. 
     After molding to the predetermined shape with sintering, the hammer  47  of the embodiment is prepared to high hardness by quenching with the predetermined temperature. The prepared hammer  47  is attached to the bottom of the gas cylinder  1 , which is filled with carbon dioxide, by spot or other welding. 
     Accordingly, the hammer  47  can be attached to the gas cylinder  1  smoothly and safely without changing a conventional process or filling facility of carbon dioxide for the gas cylinder  1 . 
     In this case, the hammer  47  can also be attached by bonding or brazing instead of spot welding. A thick steel plate is press molded to said shape instead of molding the hammer  47  with sintering, and the hammer can also be attached by spot welding, other welding, bonding, or soldering. 
     In illustration, reference numeral  49  shows the extinguishing gas jetting for outside from the jetting port guide  31  after the seal is pierced. Reference numeral  50  shows a windshield of a car. 
     The fire extinguisher gas ejector, which is constituted by the way above, is constructed by attaching the piercing device  2  on top of the small gas cylinder. The small gas cylinder  1  is constituted by attaching the hammer  47  for an emergency escape. The piercing device  2  is constituted with the piercing pipe  10 , the piercing knob  22 , the safety plate  27  which is integrally formed with the tab  24 , and the cutter  37  for cutting a seat belt for escaping in case of an emergency. 
     When making a fire extinguisher gas ejector, the hammer  47  is molded by sintering. After the sintering, the hammer  47  is prepared for predetermined hardness and is attached to the bottom of the small gas cylinder  1  by spot welding. 
     The piercing device  2  is produced by combining following parts. The resin molded outer pipes  6   a ,  6   b , the piercing knob  22  and the tab  24  that are respectively resin molded, and the cylinder holder  5 , the piercing pipe  10 , and the cutter  37  that are metal processed. 
     Then, when making the hammer  47  firstly, prescribed powder metal is molded by sintering and shape it into concavely or convexly curved thin plate. Then, the conically shaped pointed part  48  is protruded on the center of the convex surface side. 
     This state is shown in the  FIG. 10 . After the molding, the pointed part  48  is prepared for high hardness by quenching with a predetermined temperature. 
     When attaching the hammer  47 , which is produced by the way above, to the gas cylinder  1 , the hammer  47  is spot welded to the gas cylinder  1  which is filled with the extinguishing gas, carbon dioxide, and sealed with the sealing plate  3 . 
     The spot welding is carried out by connecting the concavely curved surface of the hammer  47  with the bottom of the gas cylinder  1 , energizing, and welding. The state is shown in the  FIG. 9 . 
     In this case, the spot welding temporarily causes high temperature. However, the filled carbon dioxide has no risk for an ignition, explosion, or a sudden expansion. After the spot welding, the current state is promptly recovered so that the operation of spot welding is performed safely. 
     Moreover, there is no risk for a deformation due to thermal stress of the spot welding or a crack due to a distortion. Therefore, the strength of the gas cylinder  1  is maintained, and the state of the filled carbon dioxide remains the same. 
     The sealing plate  3  is also sealed by spot welding after filling the carbon dioxide. This suggests that it is safe to carry out a spot welding to the gas cylinder  1 . 
     Moreover, the spot welding to the gas cylinder  1  is carried out after the carbon dioxide is filled. Therefore, filling operation of the carbon dioxide can be carried out in a conventional manner by using filling facilities that already exist. It will not reduce the productivity and the efficiency. 
     Accordingly, decrease of safety or productivity can be avoided unlike a case in which the spot welding is carried out before filling carbon dioxide, which affects the use of the conventional facilities of filling by the spot welded hammer  47  or causes decrease of efficiency and productivity due to changes of operations. 
     In this case, it is also possible to attach the hammer  47  to the filled gas cylinder  1  by bonding or brazing instead of spot welding. 
     Of them, bonding does not require any special facility for attachment. Little consideration needs to be given to effects of temperature of spot welding and thermal stress on the filled gas. 
     Moreover, brazing requires lower temperature compared to spot welding. It reduces effects of temperature of brazing on filled gas and thermal stress. At the same time, similar advantages and strength can be obtained as spot welding. 
     Meanwhile, a thick steel plate is press molded into the above-mentioned shape and it can also be attached by spot welding, bonding or brazing instead of molding the hammer  47  with sintering. 
     The way above does not require an expensive facility for sintering and molding and simple and low cost production is possible by the press molding. 
     After the hammer  47  is attached, the sheet  46  is attached on the middle periphery of the gas cylinder  1 . 
     In the embodiment, a film made of synthetic resin is used for the sheet  46  with printed pictures that show usage of the fire extinguisher gas ejector. Then, the film is cut to a predetermined size and formed in shape of roll. The periphery of the gas cylinder  1  is covered with the sheet, and then, shift it into a heat furnace with predetermined temperature for heat contraction. The shrunk film is attached on the middle periphery of the gas cylinder  1 . 
     Next, when producing the piercing device  2 , the outer pipe pieces  6   a ,  6   b , the piercing knob  22 , and the safety plate  27  are separately resin molded, the cylinder holder  5  and the piercing pipe  10  are machine processed with different diameter aluminum bars, and the cutter  37  is produced by press molding the steel plate. 
     Of them, outer pipe pieces  6   a ,  6   b  are formed by cutting axially the outer pipe  6  into half at the position of the jetting port guide  31 . And the center of the connecting surfaces  29   a ,  29   b  of the cylinder body side have the engaging holes  30   a ,  30   b  and the engaging holes  30   a ,  30   b  have the pin holes  32   a ,  32   b  on the middle. 
     Furthermore, one sides of the connecting surface  29   a ,  29   b  have the guide holes  31   a ,  31   b  that constitute the jetting port guide  31 . The concave grooves  39   a ,  39   b  that store the cutter  37  are formed on the other sides. 
     On the other hand, the guide pieces  34   a ,  34   b  are integrally protruded from the outside of the cylindrical body side. A part of the concave grooves  39   a ,  39   b  is formed on the connecting surfaces  38   a ,  38   b.    
     Moreover, the curved concaved parts  42 ,  43  are disposed on front and back peripheries of the outer pipe pieces  6   a ,  6   b . The curved concave part  42  of front side has a plurality of the concaved parts  44 , the concaved part  43  of back side has a plurality of the convex parts  45 . 
     The seal piercing knob  22  is shaped in an elliptical plate which has longer major axis in front and back and the top surface is gently concaved and curved. The chevron-shaped rib  23  is protruded from the front side and square hole  22   a  is disposed on the lower surface. 
     The safety plate  27  and the tab  24  are integrally formed. Of them, the safety plate  27  and the seal piercing knob  22  are shaped in virtually the same elliptical plate, and the notch  28  is disposed on the front side. 
     The tab  24  is formed in a shape of regular triangular by using a flat bar and the knob  24   a  is formed by turning up the front obliquely upward. The rear of the knob  24   a  is connected to the back of the safety plate  27  by the connecting part  26  which protruded obliquely downward. 
     The cylinder holder  5  is formed cylindrical in which the through hole  8  and the hole  9  are formed therein. The holes are smooth and have different diameters. The lower part of the cylinder  5  has the screw hole  7 , and the jetting port guide  13  and the nozzle hole  14  that are disposed on the middle circumference are communicating with the through hole  8 . 
     A pair of recessed holes  16  is disposed diametrically on the surface of the circumference of the cylinder holder  5 . The pins  15 ,  15  are pressed into the recess hole  16 . 
     The seal piercing pipe  10  is formed in a bar shape, the large-diameter part  10   a  and the annular groove  17  are disposed on the middle, and the square shaft  21  are formed on the top end. One end of a steel pipe is obliquely cut to make the needle tube  19 , one end of the tube  19  is pressed into lower end of the piercing pipe  10 , and the tip part  19   a  is protruded outside. 
     In this case, the needle tube  19  can be omitted if the piercing pipe  10  is integrally provided with the tip part  19   a.    
     Moreover, the cutter  37  is produced by press molding a steel plate, and the fitting hole  41  is disposed on the middle, and the edge of the cutter  37   a  is disposed on the side edge. 
     After the parts above are produced, the piercing device  2  is produced by assembling them. 
     For assembly, the engaging hole  30   a  of the outer pipe piece  6   a  is stored in the cylinder holder  5 , the positioning pin  15  is inserted to the recess hole  32   a , the cutter  37  is stored in the recessed groove  39   a , and the fitting hole  41  is inserted to the pin  40 . 
     Then, the connecting surface  29   a  of the other outer pipe piece  6   b  is joined with the connecting surface  29   a , the positioning pin  15  is inserted into the recess hole  32   b  of the engaging hole  30   b , and after the connecting surfaces  29   a ,  29   b  are attached, the outer pipe pieces  6   a ,  6   b  are connected together. 
     When heat welding is used for the connection, for example, an electrical heat plate (not shown) is inserted between the connecting surfaces  29   a ,  29   b . Then, applying current to the electrical heat plate and heated to a melting temperature. After the connecting surfaces  29   a ,  29   b  are melted, the electrical heat plate is pulled out, connecting surfaces  29   a ,  29   b  are welded, and the cutter  37  and the cylinder holder  5  are integrally buried therein. 
     In this case, when adhesion is used for connection, adhesive material is applied to the connecting surfaces  29   a ,  29   b . When screwing is used for the connection, screw holes are previously disposed at corresponding positions of the outer pipe pieces  6   a ,  6   b  and connect them together by screwing. 
     The piercing pipe  10  is inserted from the lower side of the through hole  8  of the cylinder holder  5  of the connected outer pipe  6 . The top end of the square shaft  21  is protruded from the hole  9 , the square hole  22   a  of the seal piercing knob  22  is fitted into the square shaft  21  with the rib  23  facing front, and they are connected together and fixed. 
     In this case, instead of the attachment above, the square shaft  21  and the seal piercing knob  22  can be fixed by screwing or can be attached with a retaining ring. 
     After the piercing knob  22  is mounted on the square shaft  21 , the safety plate  27  is inserted therebetween. The notch  28  is inserted to the top of the piercing pipe  10  with the safety plate  27  sandwiched, and the assembly of the piercing device  2  is completed when the tab  24  integrally formed with the safety plate  27  is attached on the seal piercing knob  22 . 
     As for shape, assembled piercing device  2  is composed about 83 mm high, about 60 mm long in front-back direction, and about 43 mm in external diameter. When the gas cylinder  1  is loaded to the piercing device  2  which the hammer  47  is already attached thereto, the spring  20  is inserted to the through hole  8  of the cylinder holder  5  of the piercing device  2 , O-ring  12  is attached to a step between the through hole  8  and the screw hole  7 , and the thread part  4  of the gas cylinder  1  is screwed to the screw hole  7 . 
     The fire extinguisher gas ejector which loaded the gas cylinder  1  is shown in the  FIG. 1  to  FIG. 3  and is constituted small and lightweight, 183 mm high and weigh 460 g. Unlike conventional ones, it does not require a case that covers the outside of the gas cylinder  1  so that the constitution becomes simpler and lightweight. Accordingly, it can be produced easily and at low cost. 
     Moreover, the cutter  37  and the hammer  47  are provided with the gas cylinder  1  and piercing device  2 , essential components for the fire extinguisher gas ejector. It does not require an exclusive device for escaping so that the mechanisms for fire extinguishing and escaping are constituted rationally. As for advantages, these functions can be used simply. 
     The assembled fire extinguisher gas ejector has the tab  24  with the knob  24   a  raised and exposed on the seal piercing knob  22 , and the safety plate  27  integrally formed with the tab  24  is located between the seal piercing knob  22  and the outer pipe  6 . 
     The jetting port guide  31  is located at middle and high position on front of the outer pipe  6 , the seat belt guide  34  is protruded obliquely downward, and the edge  37   a  of the cutter  37  is perpendicularly disposed in the upper seat belt introduction groove  36 . 
     The curved concaved parts  42 ,  43  that form the grasping part are located immediately below the jetting port guide  31  and the seat belt guide  34 . The upper part of the gas cylinder  1  is located inside of the concaved parts  42 ,  43  via space. 
     The mouth part for the gas cylinder  1  is sealed with the sealing plate  3  as shown in  FIG. 4 , the piercing pipe  10  is located immediately above the sealing plate  3  to be able to move up-and-down, the piercing pipe  10  is biased upwardly to move with the resilience of the spring  20  and the tip part  19   a  of the needle tube  19  is located immediately above the sealing plate  3 . 
     The sheet  46  is attached to cover the middle periphery of the cylinder  1 , the hammer  47  is disposed to the bottom of the cylinder  1 , and the pointed part  48  is downwardly exposed. In this case, it is preferable that a suitable cover is removably attached on the pointed part  48 . 
     When installing such fire extinguisher gas ejector on a car, it is stored transversely or longitudinally around a driver seat, front seat, for example, a pocket of inner side of a door or an accessory case which is around a shift lever. 
     In this case, a cross sectional view of the piercing device  2  is formed in an elliptical shape of which has a major axis in front and back direction so that rolling motion, abnormal noise and damage of fire extinguisher gas ejector can be prevented when it is put transversely. 
     In that case, preferably, if an appropriate holder is mounted to said position in a car to fix the fire extinguisher gas ejector, further stability can be obtained. 
     When the device is installed on a car and if the seat belt  35  cannot be taken off or/and a door does not open by a traffic accident, the seat belt  35  need to be cut and/or a windshield  50  needs to be broken when a driver or other member evacuate outside of the car. 
     Of them, when cutting the seat belt  35 , the curved concaved parts  42 ,  43  are grasped facing the seat belt introduction groove  36  of the piercing device  2  front, the seat belt  35  is inserted into the seat belt introduction groove  36  to contact the edge  37   a  of the cutter  37 , and the piercing device  2  is pulled down to slice through the seat belt  35 . The state is shown in the  FIG. 2 . 
     In this case, the seat belt introduction groove  36  is obliquely and downwardly open with respect to the axial direction of the piercing device  2  so that the seat belt  35  can be smoothly inserted by the chevron-shaped protrusion  33  compared to a one which has a groove opens perpendicularly and downwardly. 
     Moreover, the edge  37   a  of the cutter  37  is disposed at an acute angle with respect to the introduction direction of the seat belt  35 . The edge  37   a  of the cutter  37  cuts into the side edge of the seat belt  35  and prompt smooth cutting, compared to a edge of a cutter is disposed at right angle with respect to the seat belt introduction groove. 
     When breaking the windshield  50 , the fire extinguisher gas ejector is grasped with the bottom pointing a car side window or windshield, as with the case cutting the seat belt  35 . Then, a windshield  50  is smashed with the pointed part  48  of the hammer  47  by smashing and striking the windshield  50 . This state is shown in  FIG. 11 . 
     In this case, when breaking the windshield  50  after the seatbelt  35  is cut, the windshield  50  can be broken in continuous motion without shifting the fire extinguisher gas ejector. Similarly, when cutting the seat belt  35  after breaking the windshield  50 , the seat belt  35  can be cut in continuous motion without shifting a fire extinguisher gas ejector. 
     Accordingly, the action can be carried out quickly and safely compared with the one which dispose the seat belt introduction groove  36  and the hammer  47  at the same side or different position. 
     Moreover, the hammer  47  is disposed apart from the seat belt introduction groove  36  so that the windshield  50  is smashed surely and there is no fear of being injured. 
     Neither the operation nor impact of cutting the seat belt  35  and breaking the windshield would separate the safety plate  27  from the fixed position. The movement of the piercing pipe  10  is prevented so there is no fear of seal piercing accidentally. 
     Next, explanations for the fire extinguisher gas ejector are described below. 
     Specifically, if a fire occurs and it is extinguished when the fire extinguisher gas ejector is installed in a car, hold the fire extinguisher gas ejector with one hand, and put the finger  25  on the knob  24   a  of the tab  24  and pull up. The state is shown in  FIG. 4 . 
     In this case, the tab  24  is configured the same as a known tab for opening a beverage container so that an operation for pulling the knob  24   a  up is easily understandable. It is possible to respond to a fire in a car which needs quick operations. 
     Thus, when the knob  24   a  of the tab  24  is raised, the tab  24  is pulled up with the rear connecting part  26 , as a fulcrum, against resilience. The component force for backward acts on the safety plate  27  which is integrally formed with the tab  24  through connecting part  26 . 
     Therefore, the safety plate  27  is moved backward against the engaging force of the piercing pipe  10  and the notch  28 , and the safety plate  27  is pulled out backwardly. 
     The state is show in  FIG. 12 . The top surface of the seal piercing knob  22  is exposed, and a space, which is the same thickness as the safety plate  27 , is formed between the seal piercing knob  22  and the top edge of the outer pipe  6 . 
     Then, the fire extinguisher gas ejector is shifted to grasp the curved concaved parts  42 ,  43  and the piercing device  2  as shown in  FIG. 12 . Then, the finger  25  is put on the top of the seal piercing knob  22  and press down the seal piercing knob  22 . 
     In this way, the piercing knob  22  is descended against the resilience of the spring  20 , which moves the piercing pipe  10  accordingly, and the tip part  19   a  of the needle tube  19  pierces the sealing plate  3 . The state is shown in  FIG. 13 . 
     This introduces the filled gas of the gas cylinder  1  to jet from the pierced point to the needle tube  19 , and the pressure acts on the needle tube  19  and the piercing pipe  10 . Consequently, the jetting pressure thrusts back the piercing pipe  10  and the top end of the large diameter part  10   a  is contacted with the step  11  and returned to the original position to stop. 
     The state is shown in  FIG. 14 . The needle tube  19  is moved immediately above the sealing plate  3 , the pierced point of the sealing plate  3  is communicated with the through hole  8 , and the through hole  8  is communicated with the nozzle hole  14  and the jetting port  13 . 
     Accordingly, the filled gas is jetted from a pierced hole to the through hole  8  and it is introduced from the nozzle hole  14  to the jetting port  13 . Then, the gas is jetted outside from the jetting port guide  31  and sprayed onto the source of the fire. 
     At this time, a part of the carbon dioxide is adiabatically expanded to become dry ice after jetting the filled gas and it is mixed with the gaseous carbon dioxide and jetted toward the origin of a fire. 
     Thus, it lowers a temperature around a fire origin and stops oxygen supply. It promotes efficiency and quick fire extinction. 
     At this time, when the carbon dioxide is jetted, the latent heat cools and absorbs the heat of the surface of the gas cylinder  1 . The skirt part, which is close to the cylinder  1  and lower side of the piercing device  2 , prevents heat conduction by a space disposed inner side so that the finger  25  is not affected. 
     The fire extinction continues until all the filled gas is completely used so that the filled gas can be effectively used. Thus, the effectiveness of the fire extinction is increased. 
     Moreover, after the filled gas is used up, the empty gas cylinder  1  can be easily recovered after detaching the gas cylinder  1  from the screw hole  7  of the cylinder holder  5 . 
       FIG. 15  to  FIG. 28  shows other embodiments of the present invention, and identical numerals are used for the parts that have the same constitution with the above mentioned embodiment. 
     Of them,  FIG. 15  is a second embodiment of the present invention showing the other embodiment of the hammer  47 . 
     Specifically, in  FIG. 15  ( a ), the hammer  47  which is made from sintered metal or press molded steel plate is attached to the bottom of the gas cylinder  1  to alleviate a concern over strength reduction of the gas cylinder  1  due to thermal stress by heating of spot welding and brazing. 
     In  FIG. 15  ( b ), the hammer  47  is insert molded by use of a bowl-shaped plastic cylinder cover  51 . The cover  51  is attached to the exposed bottom of the gas cylinder  1  so that the cover  51  is rigidly attached. 
       FIG. 16  to  FIG. 22  is a third embodiment of the present invention showing other cutting form of the seat belt  35 , the other form of the hammer  47 , and installed form of the fire extinguisher gas ejector in a car. 
     Of them, as for other cutting form of the seat belt  35 , the edge  37   a  of the cutter  37  is disposed obliquely downward in the middle of the seat belt introduction groove  36 , and a seat belt releasing part  52  is disposed with a space at the rear of the cutter  37 . 
     The seat belt releasing part  52  is integrally formed with the joining part  53  which is disposed back of the seat belt introduction groove  36 . The joining part  53  is constituted by attaching a pair of joining pieces  53   a ,  53   b  that connect the seat belt guide  34  and the outer pipe  6 , and the seat belt releasing part  52  is protruded adjacent to the neck portion  54  of the joining part  53 . 
     The seat belt releasing part  52  is constituted by connecting a pair of seat belt releasing part pieces  52   a ,  52   b . The cross sectional view has a shape of inverted triangular, which the width increases as it goes to the back of the seat belt introduction groove  36  from the distal end, the seat belt releasing part  52  has wider width except the distal end than the thickness of the cutter  37 , and the periphery which curves outside forms the seat belt releasing surface  55 . In illustration, reference numeral  56  indicates a space between the cutter  37  and the seat belt releasing part  52 . 
     In this embodiment, the cylinder holder  5  is formed by aluminum and has the through hole  8  therein, which communicates with the nozzle hole  14 . The cylinder holder  5  is buried in the inner pipe cover  57 , which is made of synthetic resin, as a insert fixture to make them integrated. The jetting port  13  and the jetting port guide  31  are formed on the inner pipe cover  57 , and the outer pipe  6  is disposed outside of the inner pipe cover  57 . 
     Upper part of the outer pipe  6  has a pair of guide holes  58 , and the guide pin  59  which is integrated with the seal piercing knob  22  is slidably inserted to the guide hole  58 . The seal piercing knob  22  has a flat surface top and a recess hole  60  on the center. The threaded shaft  61  which is provided on the top end of the seal piercing pipe  10  is disposed in the recess hole  60 , and the seal piercing knob  22  is attached to the piercing pipe  10  by screwing the nut  62  into the threaded shaft  61 . 
     The spring  63  which is inserted between the top end surface of the inner pipe cover  57  and a flanged part of the upper end of the piercing pipe  10  is used as a substitute of the spring  20  which is disposed around the needle tube  19 . The resilience of the spring  63  biased the seal piercing knob  22  upwardly. In illustration, reference numeral  64  shows a cap which closes the recess hole  60 . 
     The tab  24  of the embodiment is disposed immediately above the end of the seal piercing knob  22  with the knob  24   a  extended. The safety member  27  which is integrally formed with the tab  24  is formed in a shape of a ring from a plate. This arrangement promotes the operation of pulling the tab  24  up with notches  65 ,  66  as a fulcrum and the operation of pulling the safety member  27  out. 
       FIG. 17  shows the statement of the embodiment in which before the seal is pierced. The spring  63  biased the seal piercing knob  22  upwardly, intervening the safety member  27  just under the seal piercing knob  22 . The tab  24  is located immediate above the seal piercing knob  22  and the tab  24  is normally restrained to the seal piercing knob  22  with an adhesive seal (not shown). 
     When piercing the seal, the adhesive seal is broken, and the knob  24   a  of the tab  24  is held to pull up and moved toward upper right in  FIG. 17 . Then the seal piercing knob  22  is pulled out and make a space just under the seal piercing knob  22 . 
     Then, the piercing knob  22  is pressed down against the spring  63  and the piercing pipe  10  is pressed down, and it moves the needle tube  19  in accordance with the move of the piercing pipe  10 . The sealing plate  3  is pierced with the tip part  19   a  of the needle tube  19 . The state is shown in  FIG. 18 . 
     After the seal is pierced, the extinguishing gas in the gas cylinder  1  is jetted out, pushing up the piercing pipe  10  by the extinguishing gas through the needle tube  19 . The gas comes to the through hole  8 , then the gas is introduced from the nozzle hole  14  to the jetting port guide  31  and is jetted outside. 
     On the other hand, in this embodiment, when cutting the seat belt  35 , as mentioned above, the curved concaved parts  42 ,  43  are grasped facing the seat belt introduction groove  36  front, the seat belt  35  is held with another hand and inserted into the seat belt introduction groove  36   
     Then, a side of the seat belt  35  is contacted with the edge  37   a  of the cutter  37 , and the piercing device  2  is pulled down quickly to slice through the seat belt  35 . 
     The state is shown in  FIG. 20 . Firstly, the side of the seat belt  35  is cut through with the edge  37   a  of the cutter  37 , and then the cut part is split in two sides along with the cutter  37  and moved to the back of the seat belt introduction groove  36 . 
     Then, after the cut part passes through the space  56 , the cutting pressure of the cutter  37  and the internal stress are released, then, the fiber is recovered and is moved to the distal end of the seat belt releasing part  52 . 
     After this, the cut part is divided from the distal end and is moved to the back along with the both sides of the belt releasing surface  55 , push opening the cut part. The spreading function reaches the other side of the seat belt  35 , that is the cutting part side. It prevents the seat belt  35  and the cutter  37  from contacting both sides closely or stagnating. It promotes the seat belt  35  to move to the back smoothly. 
     Thus, the seat belt  35  moves smoothly without stagnation from the seat belt releasing part  52  to the edge  37   a  of the cutter  37  and smooth and quick cutting is carried out by the cutter  37 . 
     In this case, when the seat belt releasing part  52  is closely located to the cutter  37  and the seat belt  35  is stuck in the minute space, the move of the seat belt  35  is stagnated and unable to cut the belt. The space  56  prevents the situation. 
       FIG. 21  is an enlarged view of the hammer  47  that is applied to the other embodiment. 
     The hammer  47  of this embodiment is structured with the steel retaining ring  66  and the hammer shaft  67  which quenched steel hard material. 
     The retaining ring  66  is formed in a shape of plate and has the hole  68  in center. After the retaining ring  66  is welded to the bottom of the gas cylinder  1 , the hammer shaft  67  is inserted to the hole  68  together with the stopper, the C-ring  69 . After the insertion, the tapered surface  70  which is inner rim of the hole  68  is engaged with the C-ring  69  to attach the hammer shaft  67  closely. 
     The hammer shaft  67  has a shape of axis which is longer than the height of the retaining ring  66 , the annular groove  71 , the neck portion, is formed on the base, the pointed part  72  is formed at the end, and the pointed part  72  is protruded form outside of the retaining ring  66 . 
     The welding of the retaining ring  66  is carried out after the carbon dioxide is charged to predetermined pressure and the mouth part is sealed with the sealing plate  3 . After the welding of the retaining ring  66 , the gas cylinder  1  and the retaining ring  66  are plated at the same time. 
     After that, an adhesive is applied to the periphery of the hammer shaft  67  which is processed with quenching and plating, the C-ring  69  which has elasticity and has a circular cross section is attached by squeezing to the annular groove  71 . The hammer shaft  67  is inserted to the hole  68  while the C-ring is pushed and shrunk. 
     After the insertion, the tapered surface  70  of the inner rim of the hole  68  is engaged with the spherical surface of the C-ring  69  with the elasticity. The C-ring  69  is attached by pressure to the tapered surface  70  so that the wedge effect is obtained. The adhesive is put in the gap among the gas cylinder  1 , the C-ring  69 , and the hammer shaft  67 , and then fixed to attach the hammer shaft  67  stiffly and tightly. 
     In this case, the retaining ting  66  is welded to the gas cylinder  1 . The processes of welding and plating the hammer shaft  67  to the gas cylinder  1  are avoided by engaging the hammer shaft  67  to the retaining ring  66 . 
     Accordingly, when the hammer shaft  67  is welded to the gas cylinder  1  and plated, it prevents the situation in which the pointed part  72  of the hammer shaft  67  damages the periphery of the gas cylinder  1 . 
     As mentioned above, in this embodiment, conventional facilities are available for filling of the gas and for plating process. The hammer  47  can be attached surely and safely without changing the procedures. 
     The  FIG. 22  shows the fire extinguisher gas ejector which is installed in a car. 
     The storing case  75  which is like a elongated shape bag and stores the piercing device  2  with the gas cylinder  1  is stored in the concaved door pocket  74  which is provided with the inner side of a door  73  adjacent to the driver&#39;s seat. 
     The storing case  75  is made by sewing a plate of soft foamed polyurethane resin. It is structured with one end closed and the other end is open. The opening side has one end of the open-close belt  76  which is attached detachably. 
     One ends of attaching belts  77 ,  78  are respectively attached to the periphery of the storing case  75  and the simple stopper  79  such as a hook is disposed at the other ends, and a stopper  79  is removably attached to a stopper (not shown), such as a hook, which is buried outside wall of a door pocket  74  to fix a storing case  75  in place. 
     A strap  80  is attached to the other ends of the attaching belt  77 ,  78  and stuck out to face a driver&#39;s seat. When using the fire extinguisher gas ejector, hold the strap  80  with one hand and pull up to remove the fixation of the stopper. Then the storing case  75  is taken out from the door pocket  74 . 
     After taking the storing case  75  out, one end of opening and closing belt  76  is undone, the piercing device  2  is taken out from the case  75  to carry out an operation of fire extinguishing, cutting of the seat belt  35 , and breaking a windshield  81 . In illustration, reference numeral  82  shows a door trim and  83  shows a power window device. 
       FIG. 23  to  FIG. 25  shows a forth embodiment of the present invention. The embodiment shows a bottomed protective case  84  for storing the piercing device  2  and the bottom of the case  84  covers the hammer  47 . For easy carrying and safety of the piercing device  2 , it is installed, for example, inside of a headrest and an appropriate place of a mat (not shown) to the fixed position by using a clip. 
     The protective case  84  is shaped like a vertically long bag using light and soft resin foam. There is an upper opening  85  which is made by cutting the body obliquely, and the upper opening  85  stores the seal piercing knob  22 , the tab  24 , the knob  24   a , the seat belt guide  34 , seat belt introduction groove  36 , and the cutter  37 , respectively exposed. 
     A lower opening  86  is formed on the lower part of the other side of the upper opening  85  of the protective case  84 , with the periphery of the gas cylinder  1  located exposed from the lower opening  86 . In illustration, reference numeral  87  shows a plurality of open holes that have different diameters formed around the upper opening  63 . One of them is opened to correspond with the jetting guide  31 . 
     In this case, when breaking the windshield  50 , the piercing device  2  is taken out from the protective case  84  to carry out an operation. In that case, the upper opening  85 , the lower opening  86 , and the open hole  87  loosen the contact or adhesion between the protective case  84  against the piercing device  2  so that the piercing device  2  is taken out smoothly from the protective case  84 . 
       FIG. 26  to  FIG. 28  shows a fifth embodiment of the present invention. In this embodiment, a waste of the extinguishing gas is prevented by stopping discharging the extinguishing gas which is jetted from the gas cylinder after the seal is pierced. The gas can be jetted accurately toward a fire origin, and the effective use of the gas and initial fire fighting can be achieved. It shows the fire extinguisher gas ejector having the control valve for household use or in car use, which has simpler structure by reducing the number of the part. 
     In the fifth embodiment, reference numeral  88  shows a case which has a shape of a virtually hollow tubular made of synthetic resin. It is structured by joining a pair of cut cases that are formed by cutting the center in half in the longitudinal direction. The case has a screw part  89  on the lower periphery and a bottomed cap  90  is attached thereto. 
     The case  88  has an opening  91  at top end and an operating lever  92 , which is a piercing member, is attached to the opening  91  to rotate up and down. The operating lever  92  is structured with a synthetic resin plate which has virtually the same width of the opening  91 , one end has a protruded pin  93  which is slidably inserted to a long hole  94  formed on the case  88 , and the other end is protruded from outside rear of the case  88 . 
     In illustration, reference numeral  92   a  is an engaging convex portion which protruded in the center of the undersurface of the operating lever  92 . It is disposed engageable to the top end of the control valve, which will be described later, and a safety pin  95  is inserted to the engaging convex portion  92   a . Numeral  92   b  is a concaved finger grip portion which is formed on the other end of the operating lever  92  and protrudes backward from the case  88 . 
     The safety pin  95  is inserted by penetrating the center of the operating lever  92  and the case  88 . One end of the gasping portion (not shown), protrudes outside of the case  88 , making impossible to press the operating lever  92  in normal times or to pierce the seal accidentally. When the safety pin  95  is pulled out by pulling the grasping portion (not shown), an operation of pressing the lever  92  can be performed. 
     The small gas cylinder  1  is stored inside of the case  88 , with the bottom stored in the cap  90 . The periphery of the gas cylinder  1  is formed with the thread part  4  and the thread part  4  is attached to the screw hole  7  of the cylinder holder  5  by screwing. 
     The cylinder holder  5  is formed in a shape of cylinder by aluminum die-casting. There is an opening for the screw hole  7  at the lower end and the through hole  8 , a valve hole  96 , and a hole  97  are disposed to communicate one another at the upper part of the thread hole  7 . The respective inner diameters are formed to become smaller. 
     The middle to upper periphery of the cylinder holder  5  is provided with the jetting port  13  which communicates with the jetting port guide  31  formed on the case  88 , and the bottom of the jetting port  13  is disposed with the nozzle hole  14 , which communicates the valve hole  96 . 
     The control valve  98  which is integrally formed with the piercing pipe  10  is slidably inserted to the valve hole  96 , and the top end is disposed to appear on top of the cylinder holder  5 . The top end is disposed engageable with the engaging convex portion  92   a  when it protrudes. 
     The needle tube  19  which is a piercing member is protruded from the lower end of the control valve  98 , with the tip part  19   a  disposed immediately above the sealing plate  3 . In this case, tubular structure is not necessarily required for the needle tube  19 . 
     The control valve  98  is formed in a shape of stepped bar, and at least a pair of O-rings  99 ,  100  are mounted to the positions of upper and lower of the periphery of the large diameter part, enabling the valve hole  96  and the nozzle hole  14  to be air tightened by the O-rings  99 ,  100 . 
     The spring  20  is inserted between the lower end of the control valve  98  and the sealing plate  3 , and the resilience of the spring  20  biased the control valve  98  upwardly. The stepped portion  98   a  which is formed on the middle of the control valve  98  is able to be engaged with the rim of the lower opening of the hole  97 . 
     The control valve  98  is, in normal times, able to close the nozzle hole  14  by positioning the O-ring  100 , which is disposed lower side, at inner rim of the nozzle hole  14 . When pressing the operation lever  92  and piercing the sealing plate  3 , the long hole  94  controls the descending displacement of both the operating lever  92  and the control valve  98 , and the O-ring  99 , which is disposed upper side, is positioned at inner rim of the nozzle hole  14  to be able to close the nozzle hole  14 . 
     Then, when jetting the extinguishing gas by pressing the operation lever  92  after the piercing, the O-rings  99 ,  100  are respectively positioned at inner rim of the nozzle hole  14 , the lower O-ring  100  is positioned at the side of the through hole  8 , and the nozzle hole  14  is communicated with the through hole  8  to be able to jet the extinguishing gas from the nozzle hole  14 . 
     In illustration, reference numeral  101  shows a concaved part formed on the top of the cylinder holder  5 , and a lever spring  102  is inserted between the concaved part  101  and the opening lever  92 . The resilience of the spring  102  biased the operating lever  92  upwardly. Numeral  3   a  shows a sealed hole of the sealing plate  3 . 
     In this embodiment, an outer housing, a piercing holder, a pin, and a pushrod, the parts to be disposed around the cylinder holder  5  in a conventional fire extinguisher gas ejector are omitted. Only the cylinder holder  5  is disposed upside of the case  88  so that the number of the parts are reduced and they are easily assembled. Thus, small and light structure and low cost of the fire extinguisher gas ejector can be achieved. 
     In addition, the control valve  98  of this embodiment requires only to form the annular groove which attaches two O-rings  99 ,  100  at the predetermined position of the periphery of the piercing pipe  10 . Compared to the conventional control valve, the structure is simpler and the less number of the parts is required. Therefore, it is produced easily and inexpensively. 
     The fire extinguisher gas ejector is used as follows. The cap  90  is removed before use, the gas cylinder  1  is inserted from the bottom of the case  88 , the thread part  4  of the mouth part is screwed to the screw hole  7  of the cylinder holder  5  to attach the gas cylinder  1 , and the cap  90  is screwed to the lower end of the case  88 . 
     In the fire extinguisher gas ejector of above mentioned, the O-ring  100  is positioned at inner rim of the nozzle hole  14  to close the rim and intermit the guide hole  8 , valve hole  96 , and the nozzle hole  14 . 
     The resilience of the spring  20  biases the control calve  98  upwardly and the top end is protruded from the top of the cylinder holder  5  to engage with the engaging convex portion  92   a  of the operating lever  92 . 
     The safety pin  95  is inserted to the operating lever  92  on the center, the pin  95  is engaged with the top end of the long hole  94  to stop an operation of the operating lever  92 . Moreover, the needle tube  19  is located above the sealing plate  3  for the piercing operation. The state is shown in  FIG. 26 . 
     Next, when putting out a fire, the safety pin  95  is pulled out by pulling a grasping portion (not shown) and the operating lever  92  is unlocked, the operating lever  92  is pressed down the upper center against the resilience of the spring  20 . 
     In this way, the operating lever  92  is descended horizontally through the pin  93  along with the long hole  94 , the engaging convex portion  92   a  presses the top end of the piercing pipe  10  and pushes down the control valve  98  against the resilience of the valve spring  102 . 
     Therefore, the needle tube  19  moves in accordance with the control valve  98 , and the tip part  19   a  pierces the sealing plate  3 . The state is shown in  FIG. 27 . 
     When piercing, the O-ring  99  moves to the inner rim of the nozzle hole  14  to close the nozzle hole  14  and intermit the nozzle hole  14  and the through hole  8 . 
     Thus, if the extinguishing gas is jetted from the gas cylinder  1  by piercing and flowed to the through hole  8 , the gas does not flow out from the nozzle hole  14 . 
     After the piercing, when releasing a hand from the operating lever  92 , the spring  20  pushes up the control valve  98  and the O-ring  100  is moved to the original position which shown in  FIG. 26  to seal the nozzle hole  14 . The operating lever  92  is pushed up engaged with the piercing pipe  10  and the pin  93  moves to the original position in  FIG. 26  engaged with the top end of the long hole  94 . 
     Accordingly, after the piercing, the extinguishing gas is jetted swiftly to the through hole  8  from the pierced hole  3   a  of the sealing plate  3 . However, the O-ring  100  stops the outflow of the gas from the nozzle hole  14 , and the O-ring  99  prevents the leakage from the valve hole  96  and the gas stagnates in the through hole  8 . 
     Under the situation like the above-mentioned, a finger is put on a finger grip portion  92   b  and press the operating lever  92  down against the resilience of the lever spring  102 . Then, the operating lever  92  rotates downward with the pin  93 , which acts as a fulcrum, and the engaging convex portion  92   a  presses the piercing pipe  10  down. 
     Then, the O-ring  99 ,  100  moves lower, the O-ring  100  uncloses the nozzle hole  14  and moves to the upper part of the through hole  8 , communicating the nozzle hole  14  with the through hole  8 , and the O-ring  99  moves to immediate above the rim of the inner side of the nozzle hole  14  to seal the valve hole  96 . 
     The state is shown in  FIG. 28 . The descending displacement of the piercing pipe  10  and the control valve  98  is less than when the seal is pierced. Therefore, the O-ring  99  does not close the nozzle hole  14 , and the pierced hole  3   a  is not closed by inserting the needle tube  19 . The nozzle hole  14  is remained open and the jetting of the extinguishing gas from the pierced hole  3   a  is remained. 
     Consequently, the extinguishing gas is jetted from the nozzle hole  14  to the jetting port  13  and jetted outside from the jetting guide  31  toward a fire origin. 
     As mentioned above, the control valve  98  in the embodiment, the extinguishing gas which is jetted after the piercing is once stagnated in the through hole  8 . When the through hole  8  and the nozzle hole  14  are communicated with each other by the operation of the operating lever  92  after the seal is pierced, the extinguishing gas is accurately jetted to a fire origin. 
     Then, releasing a hand from the operating lever  92  when jetting the gas, the O-ring  100  seals the nozzle hole  14 , as mentioned above, the jetting of the extinguishing gas is stopped, and the O-ring  99  stops the leakage from the valve hole  96  and the gas stagnates in the through hole  8 . Accordingly, the unused extinguishing gas after the seal piercing is used effectively. 
     Accordingly, the fire extinguisher gas ejector of the present invention easily and quickly removes the safety member, pierce the seal of the small gas cylinder mounted therewith, and jet the gas promptly to attempt early fire extinction. This invention comprises the emergency escape mechanism from vehicle, which cuts a seat belt promptly and breaks the windshield surely in case such as a fire in vehicle and collision, and attempts a prompt escape from vehicle. Moreover, it does not require a device exclusive to escape. Mechanisms for fire extinction and escaping are rationally constituted. The hammer can be rationally and safely attached to the gas cylinder. The invention comprises the control valve which prevents the waste of the extinguishing gas and jets the fire extinguishing gas to the origin of a fire surely and accurately in fire fighting. Thus, the present invention is suitable for a fire extinguisher, for example, used in a vehicle.