DE29818794U1 - Radio set for voice transmission - Google Patents

Description

GM666/97 _#4 .. .. .. ..

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ROSENBAUER INTERNATIONAL

Public limited company

Paschinger Strasse 90

A-4060 Leonding

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Radio set for voice transmission

The invention relates to a radio set for voice transmission, as described in the preamble of claim 1.

Such radio sets are known, using lip microphones with goosenecks. However, such microphones are cumbersome and therefore often lead to hindrances in the work of people working in hazardous areas. Under certain circumstances, such devices can put the emergency worker in danger due to a lack of communication.

On the other hand, AT 401 997 B, for example, discloses protective devices such as a protective helmet with a connection device for a respiratory mask, which

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provide optimal protection for these people deployed in danger zones. However, poor communication with colleagues can jeopardize the desired success.

The present invention is based on the object of creating a radio set of the type mentioned above which, on the one hand, avoids the above disadvantages and, on the other hand, also allows communication at noise levels above 100 dB(A).

This object of the invention is achieved by the features in the characterizing part of claim 1. The invention makes it possible for the first time to guarantee emergency services a secure communication structure. The compact design of the device allows it to be attached to the head in a targeted manner, whereby background noise, no matter how loud, has practically no influence on the speech transmission. The loudspeaker close to the ear ensures good hearing comprehension, also due to the wide frequency response. Much more important, however, is the vibration sensor attached to the head, since the noise level at the immediate site of the operation is usually much higher than in the operations center, through which radio traffic is handled. Good, short and understandable communication can, under certain circumstances, be the prerequisite for saving human lives.

Another embodiment according to claim 2 is also advantageous, since, as already mentioned above, the emergency personnel are predominantly equipped with such optimal protection options, whereby the radio set according to the invention, due to its compact design and the resulting advantageous attachment, comes even closer to the safety concept.

A further advantage is a design according to claim 3, since the fastening of the radio device according to the invention is an important prerequisite for the user so that no fears of any kind arise in the event of a crisis. Good communication with the so-called outside world improves morale.

The design according to claim 4 makes it possible that, if there is a subsequent need, this type of fastening ensures that readjustment can be carried out with one hand. Of course, the locking clasp could also be located on the housing and the locking strap on a part of the helmet.

According to another embodiment according to claim 5, it is achieved that a

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Continuous adjustment to the shape of the head and the personal well-being of the person deployed is thus taken into account.

A further development according to claim 6 is also advantageous because, due to the construction of a helmet, the helmet strap is arranged close to the head on the one hand and, on the other hand, the helmet strap is independent of voluntary and involuntary movements of the protective helmet itself.

The embodiment according to claim 7 has the advantage that the extremely simple design of these housing parts allows for efficient production.

The further development according to claim 8 ensures that these installations can also be carried out very quickly and inexpensively.

The design according to claim 9 results in rounded housing surfaces, which are of immense importance for health, especially in the head area of a person.

Training according to claim 10 is also advantageous, as this can increase the safety of the person deployed.

Finally, even with a design as described in claim 11, it is possible to implement it with standard components due to the simple and practically proven construction.
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The invention is explained in more detail below with reference to the embodiments shown in the drawings.

Show it:
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Fig. 1 shows a firefighter with a combination of a protective helmet and a breathing mask as well as the radio set according to the invention in a simplified, schematic representation;

Fig. 2 the radio set;

Fig. 3 the helmet in side view;

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Fig. 4 the protective helmet with the respiratory mask on the head of a user; Fig. 5 the housing of the radio set in the open state.

To begin with, it should be noted that in the different embodiments described, the same parts are provided with the same reference symbols or the same component designations, whereby the disclosures contained in the entire description can be transferred analogously to the same parts with the same reference symbols or the same component designations. The position information selected in the description, such as top, bottom, side, etc., also refers to the figure directly described and shown and, if the position changes, must be transferred analogously to the new position. Furthermore, individual features from the different embodiments shown can also represent independent, inventive solutions in themselves.

In Fig. 1, a firefighter 1 is shown wearing a protective helmet 2 and a breathing mask 3 of a breathing apparatus 4 as personal protective equipment, with the breathing air stored under high pressure in bottles 5 of the breathing apparatus 4. The personal protective equipment of the firefighter 1 serves to make him independent of the ambient air, so that fighting a fire with a steel pipe 6 is possible even in an atmosphere enriched with poisonous gases and possibly also low in oxygen.

In order to guarantee such emergency forces a secure communication structure, they are equipped with a radio set 7 for voice transmission, consisting of a microphone 9 and a loudspeaker 10 arranged in a housing 8. The actual radio device 11 is possibly housed in the jacket of a protective suit 12 and is connected to the microphone 9 or the loudspeaker 10 via cables 13.
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The housing 8 of the radio set 7 is designed in a compact design with a loudspeaker 10 and microphone 9 arranged at a distance from one another, whereby the loudspeaker 10 can be placed in the area of the human ear. The microphone 9 is designed as a vibration sensor 14, in particular as a contact microphone for recording the structure-borne sound generated by speaking, and is located in the area of a skull bone on the head 15. The radio set 7 is provided under the protective helmet 2. The compact design of the radio set 7 enables targeted

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Attachment to the head 15 is possible, whereby the housing 8 can be individually attached to a part of the protective helmet according to the shape of the user's head.

The loudspeaker 10 or the vibration sensor 14 is activated via a push-button control 16, which is designed with a safety coupling and a spiral cable 17. The push-button control 16 can be arranged, for example, on the belt of the protective suit 12 of the firefighter 1. The connection between the hearing-speaking unit, in particular the radio set 7 and the push-button control 16 is secured by a strain relief of the connecting cable, in particular the spiral cable 17.

According to Fig. 2, the housing 8 is made in a compact design. It is precisely this compact design that allows the radio set 7 to be placed under a protective helmet 2. In addition, the vibration sensor 14 and the loudspeaker 10 are of course also of miniature design, which enables them to be arranged in this housing 8. The loudspeaker 10 is placed in the area of the human ear or on the auricle itself, which allows good hearing. The vibration sensor 14 is brought into contact with a skull bone, in particular on the temporal bone, with light pressure. The structure-borne sound pickup practically suppresses the background noise level at the scene of the incident. This ensures perfect communication with other colleagues or with the operations center. In order to increase safety even further, the loudspeaker 10 or the vibration sensor 14 has connector plugs 18 for the electrical connection to the radio device 11, which are designed as safety plugs.

The protective helmet 2 is shown in section in Fig. 3. The protective helmet 2 comprises a protective helmet shell 24 in which a support frame 25 is arranged to adapt to the different head dimensions of the user. The head width of the support frame 25 can be adjusted using an adjustment device 19. A support plate 20 is attached to the support frame 25 in the flank area of the protective helmet 2, for example using rivets 21, which supports a pivot axis 22 of a joint arrangement 23 and a rotation axis 26 about which a chin strap 27 can be rotated. At the same time, a visor 28 can be swiveled out about the pivot axis 22.

The interior of the protective helmet 2 includes a support net 29, which can be adjusted in height relative to the helmet strap 31 using adjustment straps 30.

A neck pad 32 is arranged on the helmet strap 31 of the support frame 25, which enables the protective helmet 2 to fit firmly and at the same time is intended to prevent injuries from being struck by the protective helmet 2. A reinforcing element 33 is arranged in the protective helmet shell 24 in the crown area, which can also accommodate the radio device 11, for example.

The rear wall of the housing 8 of the radio set 7 has a Velcro strip 34 for individual fastening to a part of the protective helmet 2. Of course, the part of the protective helmet 2 also has a Velcro strip 34 at the corresponding point, which engages with the counterpart. The preferred point for the part of the protective helmet is the helmet strap 31. However, the support frame 25, the support net 29 or the adjustment strap 30 or the like can also be used. When arranging the Velcro strip 34, it is important that the radio set 7 can be individually fastened to the shape of the user's head and that the loudspeaker 10 rests in the ear area and the vibration sensor 14 rests on the temporal bone.

In order for the radio set 7 to function, it is connected to the radio device 11 via the cable 13. In order to be able to carry out the function control, the radio set is connected to the push-button control 16 via the spiral cable 17, as shown schematically.

Fig. 4 shows a protective helmet 2 that allows the respiratory mask 3 to be attached directly via a connecting device 35. The design of the protective helmet 2 corresponds, for example, to the embodiment described above in accordance with Fig. 3, although any other embodiment can also be used. The support plate 20 for supporting the connecting device 35 is rotatably mounted via an axis 36, for example a correspondingly designed rivet, on a crossbar 37 that connects the helmet strap 31 to one another in the two flank areas of the protective helmet 2.

Since the protective helmet 2 can move from the position shown in solid lines to the position shown in dashed lines, for example when hit, there is now a risk that the respiratory protection mask 3 will be moved away from the user's face via the connecting device 35 and leaks will occur. To prevent this, the pivoting support plate 20 is connected to the neck pad 32 via a tensile spacer 38, which in turn is connected to the helmet strap 31 in a movement-proof manner. This means that despite the movement of the support plate

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20 when the protective helmet 2 is impacted, the distance between the neck pad 32 and the attachment point of the spacer 38 on the support plate 20 remains constant. The pivot axis 22 also remains practically in its original position.

This pivot axis 22 is therefore ideal for arranging a rotating locking clasp 39 on its head side to accommodate a locking band 40. The locking band 40 is arranged on the housing 8 of the radio set 7 and is brought into engagement with the locking clasp 39 in order to achieve an individual fastening of the radio set 7. The individual fastening is again carried out in such a way that the loudspeaker 10 is placed in the ear area and the vibration sensor 14 rests against a skull bone.

The housing 8 of the radio set 7 is shown in Fig. 5. The loudspeaker 10 and the vibration sensor 14 are not shown as built-in components. The housing 8 is made in two parts and consists of a cover 41 and the housing part 42 that accommodates the built-in components. The cover 41 has openings 43 that serve to accommodate a snap connection 44 arranged on the housing part 42. In addition, the cover 41 can also be provided with holes 45 to allow a screw connection. It is also possible for the cover 41 and/or the housing part 42 to be made of hard plastic and/or soft rubber, whereby these have a rounded housing surface and are therefore of immense importance for health, especially in the head area of a person.

Since the cover 41 and the housing part 42 are injection-molded parts made of plastic, the housing part 42 has all the components necessary for positioning the loudspeaker 10 and the vibration sensor 14, such as the webs 46. Of course, the housing part 42 also has the opening 47 for the vibration sensor 14 and the perforation 48 for the loudspeaker 10. The cable openings 49 for the electrical cables are also manufactured during the manufacture of the housing part 42.

It is of course possible that a new type of radio device 11 with voice recognition can be used for the radio set 7, whereby the push button control 16 used for voice recognition can be omitted. In addition, it is possible that a setting device for

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the volume of the loudspeaker 10 is arranged.

An advantage of such a design of the radio set 7 is that the compact design of the housing 8 means that the radio set 7 can easily be retrofitted into already impressive protective helmets 2

Finally, it should be noted that in the previously described embodiments, individual parts have been shown disproportionately enlarged in order to improve the understanding of the inventive solution. Furthermore, individual parts of the previously described feature combinations of the individual embodiments can also form independent, inventive solutions in conjunction with other individual features from other embodiments.

Above all, the individual embodiments shown in Figures 1; 2; 3; 4; 5; can form the subject of independent, inventive solutions. The relevant inventive tasks and solutions can be found in the detailed descriptions of these figures.

Reference symbol list

1 firefighter

2 Safety helmet

3 Respiratory mask

4 Respiratory protection device

5 bottle

6 steel tube

7 Radio set

8 Housing

9 Microphone

10 speakers

11 Radio

12 Protective suit

13 Management

14 Vibration sensors

15 head

16 Push button control

17 Spiral cable

18 connector plugs

19 Adjustment device

20 Support plate

21 rivets

22 Swivel axis

23 Joint arrangement

24 Safety helmet

25 Support frame

26 Rotation axis

27 Chin strap shell

28 Visor

29 Support net

30 Adjustment band

31 Helmet strap

32 neck pads

33 Reinforcing element

34 Velcro

35 Connecting device

36 Axis

37 Crossbars

38 spacers

39 Snap clasp

40 locking band

41 Lid

42 Housing part

43 Breakthrough

44 Snap connection

45 Bore

46 Bridge

47 Opening

48 Perforation

49 Pipe passage

Claims (11)

·*■ Protection claims 1. Radio set for voice transmission, consisting of a radio receiver housed in a housing se arranged microphone and a loudspeaker, the radio device being optionally provided outside this housing and being connected to the microphone or to the loudspeaker via lines, characterized in that the housing (8) is designed in a compact design with a loudspeaker (10) and microphone (9) arranged at a distance from one another, the loudspeaker (10) being designed in the area of the human ear and the microphone (9) as a vibration sensor (14), in particular as a contact microphone, for recording the structure-borne sound caused by speaking, and this vibration sensor (14) can be placed or rests in the area of a skull bone on the head (15). 2. Radio set according to claim 1, characterized in that the housing (8) with the loudspeaker (10) and the vibration sensor (14) under a helmet, in particular under a protective helmet (2), for the head (15), if necessary also in combination with a respiratory mask (3) of a protective suit (12) or the like. 3. Radio set according to claim 1 or 2, characterized in that the housing (8) can be individually fastened to a part, in particular to the support frame (25), to the support net (29), to the adjustment strap (30), to the helmet strap (31) or to the crossbar (37) of the protective helmet (2) according to the shape of the user's head. 4. Radio set according to one or more of claims 1 to 3, characterized in that for individual fastening the part of the protective helmet (2) or the housing (8) on the side facing away from the head (15) has at least one locking clasp (39) or a locking band (40) which are in engagement with one another. 5. Radio set according to one or more of claims 1 to 3, characterized in that for individual fastening the part of the protective helmet (2) and the rear wall of the housing (8) each have a Velcro strip (34) which engage with one another. 6. Radio set according to one or more of claims 1 to 5, characterized in that the part of the protective helmet (2) for fastening the housing (8) -10- Helmet strap (31). 7. Radio set according to one or more of claims 1 to 6, characterized in that the housing (8) is designed in two parts and consists of a cover (41) and the housing part (42) accommodating the loudspeaker (10) or the vibration sensor (14), the cover (41) and the housing part (42) being able to be assembled via at least one snap connection (44). 8. Radio set according to one or more of claims 1 to 7, characterized in that the housing part (42) has all the elements required for positioning the loudspeaker (10) and the vibration sensor (14) necessary fittings, such as webs (46) or the like. 9. Radio set according to one or more of claims 1 to 8, characterized in that the cover (41) and the housing part (42) are injection-molded parts made of plastic. 10. Radio set according to one or more of claims 1 to 9, characterized in that the loudspeaker (10) or the vibration sensor (14) for electrical connection to the radio device (11) have connection plugs (18) which are designed as safety plugs. 11. Radio set according to one or more of claims 1 to 10, characterized in that the loudspeaker (10) or the vibration sensor (14) is put into operation via a push-button control (16) which is designed with a safety coupling and a spiral cable (17).