EP4014778A1 - Head protector - Google Patents

Abstract

The invention relates to head protection for protecting a head protection wearer. The head protection has a base body (1), at least one airbag (4) arranged on the base body (1) and an accident detection arrangement arranged on the base body (1) and at least temporarily connected to the at least one airbag (4) for triggering the at least one airbag (4) when an accident is detected. The accident detection arrangement has at least one 3D environment detection device (2) for detecting a respective environment of the head protection wearer and at least one movement detection device (7) for detecting a respective movement of the head protection wearer. It triggers the at least one airbag (4) to be deployed if the movement detected in each case and the environment detected in each case both indicate an accident.

Description

The invention relates to head protection for at least partial or area-wise protection of a head protection wearer, in particular against mechanical effects. Furthermore, the invention is directed to a method for at least partially protecting a head protection wearer.

The energy absorption capacity of a protective helmet is generally directly dependent on the amount or mass of energy-absorbing material used. In general, when the energy absorbing material is increased in the protective helmet, it is necessary to increase the wall thickness thereof. This leads to a heavier and bulkier protective helmet, which the wearer usually finds annoying.

From the WO 2019/004918 A1 a collar assembly is known which, when worn, goes around a wearer's neck and upon detection of an accident is capable of protecting the wearer's head by means of an airbag. Various sensors can be used. The disadvantage of this collar arrangement is that it does not always work reliably and then often does not protect the wearer adequately.

the DE 197 54 541 A1 discloses an airbag protection system for the head of cyclists, motorcyclists, workers and athletes, which is in the ready state as a closed ring in the neck and shoulder area of the user. With this airbag protection system, false deployments can occur again and again.

From the U.S. 2020/0093200 A1 a protection system and method for a head-mounted display unit is known. The protection system may be configured to determine a risk of possible injury to a wearer by a component of the display unit based on an identified situational location and sensor input. It can be designed to select a suitable protective device, such as an airbag.

the U.S. 2016/0207486 A1 discloses a security system for a motorcycle and deployment method. These evaluate presence signals from external and/or internal security components to identify the currently available security components.

The invention is based on the object of providing head protection which, on the one hand, has an extremely high level of protection in the event of an accident and, on the other hand, offers particularly good wearing comfort.

According to the invention, this object is achieved by the features specified in independent claims 1 and 15 . The essence of the invention lies in the at least one airbag and in the accident detection arrangement which is connected to it at least temporarily, in particular directly or indirectly. The at least one airbag is inflated in the event of an accident. When inflated, it is able to absorb shock or impact energy and thus protect the wearer's head in the event of an impact. This increases the protective effect.

The at least one 3D environment detection device is in particular able to detect the respective environment of the head protection wearer, for example continuously or intermittently or periodically, preferably at least in one/around a primarily horizontal plane, and to generate correlating electrical environment signals that can be further processed. she is preferably capable of capturing the respective environment three-dimensionally or in such a way that a three-dimensional image of the respective environment can be generated from the generated environment signals. For example, up to several hundred images per second can be captured or created by the at least one 3D environment capture device.

It is expedient if the at least one 3D environment detection device is capable of detecting at least the respective neighboring environment. The maximum range of the at least one 3D environment detection device is preferably between 200 m and 300 m, preferably between 225 m and 275 m. The typical range in use is advantageously between 10 m and 50 m, in particular between 20 m and 30 m. The environment with a maximum distance of 25 m from the at least one 3D environment detection device is particularly relevant, since the strength of the reflected signal/beam/wave, in particular light, is particularly high there.

For example, distances to surfaces such as moving objects, stationary objects and/or the ground can be detected. A relative speed can preferably be determined by a change in path between two recordings.

Several 3D environment detection devices are advantageously present in order to at least largely, preferably completely, detect the respective environment of the person wearing the head protection. The 3D environment detection devices are preferably arranged on or around the base body in such a way that their detection fields or areas are at least partially preferably overlap at the edge, preferably at least in a remote area.

The at least one 3D environment detection device allows, for example, an early detection of an accident and an overcoming of problems associated therewith. With conventional accident detection arrangements, which rely purely on carrier movement detection, accidents are often only recognizable when the corresponding movements or forces are already effective. For example, if the wearer falls, there is usually enough time to inflate an airbag and thus protect the wearer. In the event of an accident with an opposing moving object, such as a passenger car or truck, or a high object, such as a truck, the time for inflating the airbag is often no longer sufficient, so that the wearer with a conventional pure wearer movement detection by the Airbag is not protected. In contrast, the 3D environment detection device already recognizes the threatening dangerous situation, ie in particular before the occurrence of the accident, so that the airbag can be triggered earlier. This improves the protective effect.

By means of the at least one movement detection device, movements of the head protection wearer, in particular of the head of the same, can be traced and detected, for example continuously or intermittently or periodically. Kinematic variables or measured variables, such as speed and/or acceleration, of the head protection or of the head protection wearer wearing the head protection can be advantageously detected. It is expedient if the at least one movement detection device is able to generate corresponding electrical movement signals that can be processed further and which are associated with the respective movements of the head protection wearer correlate. It is expedient if several movement detection devices are present in order to detect movements in different directions. An embodiment of the accident detection arrangement without a movement detection device is alternatively possible.

The accident detection arrangement is capable of processing or evaluating corresponding signals from the motion detection device and the 3D environment detection device. The use of differently designed detection devices means that the accident detection arrangement is particularly reliable.

Misdeployment, which can be particularly dangerous for the head protection wearer and cause not inconsiderable costs, can be avoided, especially if the accident detection regulation only triggers at least one airbag if the respective detected movement and the respective detected environment both occur together close an accident. For example, the accident detection arrangement concludes that an accident is imminent and triggers the at least one airbag if the acceleration or speed of the head protection wearer increases, particularly sharply, and at the same time an approaching area is detected. False triggering, such as when driving over bumps in the ground, such as curbs, can thus be avoided, for example. The accident detection arrangement recognizes a conspicuous event based on the detected movement of the head protection wearer, but at the same time also notices an "all clear" based on the at least one 3D environment detection device. The at least one airbag is not triggered.

In particular, the accident detection arrangement is capable of determining its relative speed to the head protection wearer from a path difference of a surrounding surface or a surrounding object. Additionally or alternatively, it is capable of detecting changes in relative speed. The accident detection arrangement is thus able to predict an accident. In order to increase safety, the accident detection arrangement also uses signals from the at least one movement detection device in addition to signals from the at least one 3D environment detection device and preferably evaluates them. The accident detection arrangement is able to detect an accident while it is occurring.

The accident detection arrangement is favorably at least temporarily in signal connection with a communication unit, in particular a transmission unit, in order to make or initiate an emergency call in the event of a recognized accident or shortly thereafter. It is advantageous if the communication unit alone is able to communicate. Alternatively, the communication unit uses a mobile phone, such as a smartphone, which is then connected to it for the communication.

The accident detection arrangement preferably sends the information that an accident has occurred to a mobile phone, preferably via Bluetooth. The mobile phone then informs contacts specified by the head protection wearer and/or other users who are in the vicinity of the accident site.

It is expedient if the accident detection arrangement is at least temporarily in signal connection with a locating unit, such as a GPS unit, in order to determine the location of the accident via the communication unit if an accident is detected to specify. The locating unit is able to carry out a position determination and to generate corresponding instantaneous position data which are representative of the current location of the locating unit, the head protection or the head protection wearer. It is useful if the locating unit is part of the mobile phone.

It is advantageous if the accident detection arrangement comprises at least one computing unit/processing device, an energy source, a memory unit and/or a user interface, such as a display, an on switch and/or off switch. The energy source is at least temporarily in direct or indirect electrical connection with the at least one 3D environment detection device and the at least one movement detection device and the computing unit/processing device, if present, in order to supply them with electrical energy. The at least one 3D environment detection device and the at least one motion detection device are then at least temporarily in indirect or direct signal connection with the computing unit/processing device in order to supply corresponding signals to it.

It is expedient if the at least one airbag is folded flat in its resting state, ie before inflation, and is preferably arranged in a concealed manner in/on the base body. It doesn't bother you and it's small. The at least one airbag is preferably cushion-like and substantially larger when inflated. It then preferably surrounds the head of the head protection wearer at least in certain areas. The at least one airbag then favorably surrounds the head of the head protection wearer in the form of a ring, for example by means of at least one tire in the form of at least one Partial shell or as a continuous cushion. It then preferably covers the frontal bone, cranial bone, occipital bone and/or temporal bone.

The connection between the at least one airbag and the accident detection arrangement is mechanical and/or electrical, for example. For example, a cable, lever, pin or the like is used for a mechanical connection.

It is expedient if the at least one airbag is triggered via triggering electronics. At least one gas generator, such as a gas cartridge, is advantageously assigned to the at least one airbag for inflating it.

Further advantageous refinements of the invention are specified in the dependent claims.

The at least one motion detection sensor according to dependent claim 2 is preferably capable of detecting a corresponding measured variable or motion variable.

The at least one acceleration sensor according to dependent claim 2 allows a particularly functionally reliable detection of a respective corresponding movement of the head protection wearer. It is able to determine a respective acceleration of the head protection wearer, for example through acting inertial forces. For example, the at least one movement detection device additionally or alternatively comprises at least one yaw rate sensor and/or speed sensor.

It is expedient if the accident detection arrangement causes the at least one airbag to be triggered if the movement detected in each case indicates an accident. This accident detection arrangement is extremely reliable. If, for example, the accident detection arrangement does not detect a conspicuous event due to the respective detected environment, the accident detection arrangement still triggers the at least one airbag to protect the head protection wearer based on the detected conspicuous movement of the head protection wearer.

The at least one TOF (ToF, time of flight) device according to dependent claim 3 works with the transit time method and is particularly capable of measuring distances to surfaces or using transit time information to create a three-dimensional image/profile of the environment. Light is emitted from a transmitter of the TOF device and reflected from at least one surface. The reflected light beams or corresponding portions of pulse energy are received by a receiver of the TOF device and the distance is determined using a propagation time of photons of the light beams. The at least one TOF device thus preferably comprises at least one transmitter, such as a light source, a receiver, such as optics, control electronics and an evaluation unit. The at least one TOF device is designed as a TOF camera or TOF sensor, for example.

The 3D environment detection devices according to dependent claim 4 lead to a particularly functionally reliable accident detection arrangement. They are preferably arranged at a distance from one another and on opposite sides of the base body. In operation, they advantageously emit light in different directions.

As a result of the configuration according to dependent claim 5, the detection of the respective environment is further increased and improved in comparison with the configuration according to dependent claim 4. The 3D environment detection devices are preferably arranged laterally on opposite sides of the base body and emit light in different directions, in particular in opposite directions, during operation. They are conveniently spaced apart from each other.

The 3D image or three-dimensional image according to dependent claim 6 is particularly realistic, which results in an extremely functionally reliable accident detection arrangement.

The movement profile of the head protection wearer according to dependent claim 7 reproduces the detected movements particularly precisely, which leads to a very functionally reliable accident detection arrangement.

The processing device according to the dependent claim 8 is preferably a central processing device. It is advantageously of an electrical or electronic type. The processing device is preferably an internal or external processing device. It is expedient if the processing device has an output which is at least temporarily connected to the at least one airbag, in particular to its triggering electronics. The processing device preferably has at least one input which is at least temporarily connected to the 3D environment detection device and the at least one movement detection device.

The accident detection arrangement according to dependent claim 10 is also particularly reliable.

According to dependent claim 11, the evaluations of a movement profile and an environment profile run simultaneously, alternatively one after the other. Simultaneous evaluations allow the at least one airbag to be deployed particularly quickly. Such an accident detection arrangement is particularly quick to react and safe.

The head protection according to dependent claim 12 is particularly user-friendly. On the one hand, it allows good hearing, which is important for safety reasons. If the at least one airbag is triggered, it dampens its triggering noise, which prevents hearing damage to the person wearing the head protection. The hearing protection is therefore only active at times, in particular for a short time.

The head protection according to dependent claim 13 offers the head protection wearer a particularly high level of security. For example, the helmet is designed as a sports helmet, such as a cycling helmet, winter sports helmet, equestrian helmet or the like. Alternatively, the helmet can be used, for example, in the area of occupational safety. It is useful if the helmet includes a chin strap arrangement. It is an advantage if the helmet has a helmet shell. The helmet shell preferably has an outer shell, in particular a hard or stable one. It is expedient if the helmet shell has an inner shell, for example made of a (rigid) foam material. The (rigid) foam material is preferably shock-absorbing. The helmet shell preferably comprises a lining or padding on the inside. Alternatively, the helmet shell is formed, for example, by a hard shell and is preferably unpadded. Conveniently located in the hard case then an interior. Alternatively, the head protection is preferably designed as a cap, hat or the like. It is an advantage if the head protection is adjustable in size. Even without a deployed airbag, such a head protection preferably offers a high level of protection, in particular one that conforms to standards, in particular for the head of the head protection wearer.

The headband according to dependent claim 14 is characterized by its high wearing comfort. It is comparatively light and allows good ventilation of the head of the head protection wearer. The headband is preferably endless. Conveniently, it is variable in length.

The head protection is preferably designed (substantially) symmetrically with respect to a central plane.

It is expedient if the accident detection arrangement gives the wearer of the head protection early warning of possible accidents, obstacles or the like, for example optically and/or acoustically. The at least one 3D environment detection device is capable of early detection of obstacles that are difficult or impossible to detect with the human eye. Especially in the dark, such as at night, this represents a significant safety advantage.

The dependent claims referring back to independent claim 1 also relate to preferred developments of the independent method claim.

Fig. 1

eine Draufsicht auf einen erfindungsgemäßen Kopfschutz mit aktiven 3D-Umgebungs-Erfassungseinrichtungen,

Fig. 2

eine perspektivische Ansicht des in Fig. 1 gezeigten Kopf-schutzes,

Fig. 3

einen Längsschnitt durch den in Fig. 1, 2 veranschaulichten Kopfschutz,

Fig. 4

eine Ansicht, die den in Fig. 1 bis 3 dargestellten Kopfschutz von hinten mit ausgelösten Airbags zeigt,

Fig. 5

eine Fig. 4 entsprechende Ansicht, die den Kopfschutz von vorne mit ausgelösten Airbags zeigt,

Fig. 6

eine perspektivische Ansicht, die den Kopfschutz gemäß Fig. 1 bis 5 mit ausgelösten Airbags veranschaulicht,

Fig. 7

ein Blockschaltbild der Unfall-Erfassungsanordnung des in Fig. 1 bis 6 gezeigten Kopfschutzes,

Fig. 8

ein Flussdiagramm, das die Funktion der Unfall-Erfassungs-anordnung des in Fig. 1 bis 6 gezeigten Kopfschutzes erläutert,

Fig. 9

eine Seitenansicht, die einen von einem Kopfschutz-Träger getragenen erfindungsgemäßen Kopfschutz gemäß einer zweiten Ausführungsform veranschaulicht,

Fig. 10

eine Ansicht, die den in Fig. 9 veranschaulichten Kopfschutz von vorne zeigt,

Fig. 11

eine Draufsicht auf den in Fig. 9, 10 veranschaulichten Kopf-schutz, und

Fig. 12

eine perspektivische Ansicht, die den in Fig. 9 bis 11 dargestellten Kopfschutz in getragenem Zustand mit aktiven 3D-Umgebungs-Erfassungseinrichtungen zeigt

In the following, preferred embodiments of the invention are described by way of example with reference to the attached drawing. show:

1

a plan view of head protection according to the invention with active 3D environment detection devices,

2

a perspective view of the in 1 shown head protection,

3

a longitudinal section through the in 1 , 2 illustrated head protection,

4

a view that the in Figures 1 to 3 shown head protection from behind with deployed airbags,

figure 5

one 4 corresponding view showing the head protection from the front with deployed airbags,

6

a perspective view according to the head protection Figures 1 to 5 illustrated with deployed airbags,

7

a block diagram of the accident detection arrangement of in Figures 1 to 6 shown head protection,

8

a flowchart showing the function of the accident detection arrangement in Figures 1 to 6 shown head protection explained,

9

a side view illustrating a head protection according to the invention worn by a head protection wearer according to a second embodiment,

10

a view that the in 9 illustrated headgear shows from the front,

11

a top view of the in 9 , 10 illustrated head protection, and

12

a perspective view showing the in Figures 9 to 11 headgear as shown when worn with active 3D environment sensing devices

one in the Figures 1 to 6 The protective helmet shown for cyclists comprises a helmet shell 1 as the base body.

A plurality of TOF devices 2 are arranged on the helmet shell 1 at a distance from one another, preferably adjacent to a lower edge of the helmet shell 1 . The TOF devices 2 are arranged (substantially) evenly spaced apart from one another and are of identical design. They are preferably in a common plane and are arranged on the helmet shell 1 in such a way that their transmitters face away from an interior spatially delimited by the helmet shell 1 and are able to emit light outwards from the helmet shell 1 in order to detect the surroundings. As figure 1 shows, for example, the TOF devices 2 emit detection fields 21 in the shape of a sector of a circle to the outside during operation. The detection fields 21 essentially extend around a common horizontal plane that runs perpendicular to a longitudinal center plane of the helmet shell 1 . It is useful if they detect the surroundings from a maximum height of 3 m above the ground. Preferably the detection fields 21 overlap at least in the far range, preferably in the middle and far range.

A total of four TOF devices 2 are present here. A TOF device 2 is located at the front of the helmet shell 1, while another TOF device 2 is located at the rear of the helmet shell 1. A further TOF device 2 is located on each side surface of the helmet shell 1. A different arrangement or number of the TOF devices 2 is alternatively possible.

An airbag arrangement 3 is arranged on the helmet shell 1 at the rear. The airbag arrangement 3 comprises two airbag devices, which are identical and each have a sac-like airbag 4 and a gas cartridge 5 which is in flow connection with the airbag 4 at least for inflating the same, and a gas cartridge 5 which is connected to the gas cartridge 5 at least for inflating the airbag 4 in Related ignition as trigger unit 6 include.

The airbag arrangement 3 also carries an acceleration sensor arrangement 7.

A processing device 8 , an energy source 9 and a memory unit 10 as well as a user interface 11 are also arranged on the helmet shell 1 . The energy source 9 is designed, for example, as a battery or accumulator. The processing device 8, energy source 9 and/or storage unit 10 can represent an isolated component or be part of another electrical component.

Below, with reference to 7 the design of the accident detection arrangement explained in more detail.

The processing device 8 is at least temporarily in direct signal connection with the triggering units 6 and is able to send triggering signals to them when an accident is detected.

Each triggering unit 6, in turn, is at least temporarily in direct communication with the associated gas cartridge 5 and is able to release the compressed gas contained therein, which then flows into the associated airbag 4 and inflates it from its folded state to protect the head protection wearer.

Each TOF device 2 is at least temporarily in direct signal connection with the processing device 8 . The processing device 8 then receives corresponding environmental signals. The acceleration sensor arrangement 7 is also at least temporarily in direct signal communication with the processing device 8 . The processing device 8 then receives corresponding movement signals.

The processing device 8 and the memory unit 10 are at least temporarily in direct signal connection with one another. The processing device 8 is capable of sending events to be stored to the storage unit 10 and, if necessary, receiving stored events from it.

The processing device 8 and the user interface 11 are at least temporarily in direct signal connection with one another. For example, the processing device 8 sends to the user interface 11 status information, which is then displayed, for example via LEDs. The processing device 8 can be switched on and/or off using the user interface 11, for example.

The energy source 9 is at least temporarily electrically connected to the TOF devices 2, the storage unit 10, the processing device 8, the acceleration sensor arrangement 7, the triggering units 6 or the airbags 4 and the user interface 11 in order to supply them with electrical energy, such as electricity to supply.

Other circuits are alternatively possible in order to ensure the operation of the accident detection arrangement and/or the deployment of the at least one airbag 4.

The signal connections can be wired or wireless.

Below, with reference to 8 the function of the accident detection arrangement explained in more detail.

In a step 12, the surroundings of the protective helmet or the head protection wearer are recorded three-dimensionally by means of the TOF devices 2. The TOF devices 2 generate corresponding representative environment signals. The environment signals are based on 3D transit time information.

In a step 13 , any currently existing movement/acceleration of the protective helmet or of the head protection wearer is detected by means of the acceleration sensor arrangement 7 . The accelerometer arrangement 7 generates corresponding representative motion signals and/or acceleration signals.

The acceleration sensor arrangement 7 and the TOF devices 2 are always active when the accident detection arrangement is used and are able to detect the movement/acceleration of the protective helmet or the head protection wearer and its surroundings. Steps 12 and 13 are preferably performed simultaneously.

The detected environmental signals and movement signals/acceleration signals are then transferred in a step 14 to the processing device 8, in which they are then processed.

In a subsequent step 15, the processing device 8 combines the environmental signals into a three-dimensional image of the respective environment. A respective environment profile is generated.

In a step 16 following step 15, the processing device 8 evaluates the environmental profile.

In a step 17, the processing device 8 creates a movement profile and/or an acceleration profile from the movement signals/acceleration signals. This is preferably done at the same time as step 15.

In a step 18 following step 17, the processing device 8 evaluates the movement profile and/or the acceleration profile. This is preferably done at the same time as step 16.

The environmental profile and movement profile/acceleration profile are preferably evaluated continuously, advantageously simultaneously.

Step 19 then follows steps 16 and 18. In step 19, a risk assessment is carried out with regard to an accident (which is already taking place) and/or a collision (imminent) based on the evaluation of the environment profile and movement profile/acceleration profile. On the other hand, the information obtained is compared in particular in the processing device 8. For example, the processing device 8 compares the movement profile/acceleration profile with stored reference profiles. The processing device 8 preferably makes a comparison with findings/results/checks that are based on the respective environmental profile.

Step 19 is followed by step 20, in which it is checked whether a collision, such as with a surface such as a tree, a branch, a vehicle, a person or the like, is to be expected based on the risk assessment and the comparison such an accident is taking place.

If the processing device 8 determines during the check in step 20 that an accident/collision is taking place or is imminent, in a step 23 the processing device 8 activates the triggering units 6 and thus the airbags 4 to protect the head protection wearer.

The triggering units 6 are activated when only the environment profile or only the movement profile/acceleration profile, which is not according to the invention, or according to the invention the environment profile together with the movement profile/acceleration profile indicates a safety-relevant case. It therefore takes place when the environment profile and (according to the invention)/or (not according to the invention) the movement profile/acceleration profile indicate a safety-relevant case.

According to the invention, the triggering units 6 are only activated if both the environmental profile and the movement profile/acceleration profile together indicate an accident or a collision.

If the processing device 8 establishes in step 20 that no collision or no accident is foreseeable, steps 12 and 13 are returned to and the method described is restarted. The trip units 6 are not activated.

In the following, with reference to the Figures 9 to 12 an alternative embodiment described. Identical parts are given the same reference numbers as in the previous embodiment, to the description of which reference is explicitly made. Structurally different, but functionally equivalent parts are given the same reference numbers with an "a" after them.

The base body is designed here as a headband 1a, the size of which can be adjusted by means of a size adjustment device 22. When worn, it surrounds the head of the head protection wearer, with the top of the head remaining (essentially) uncovered.

The headband 1a carries a TOF device 2 at the front and rear. There are a total of two TOF devices 2 here, which are arranged opposite one another and are of identical design.

Two airbag devices are arranged at the rear of the headband 1a. An acceleration sensor arrangement 7 is located between the airbag devices.

The construction of the accident detection arrangement and its function are the same as in the previous embodiment to which reference is made.

Claims (15)

Head protection for at least partial protection of a head protection wearer, a) with a base body (1; 1a), b) with at least one airbag (4) arranged on the base body (1; 1a), and c) with an accident detection arrangement arranged on the base body (1; 1a) and at least temporarily connected to the at least one airbag (4) for triggering the at least one airbag (4) when an accident is detected, the accident detection arrangement i) has at least one 3D environment detection device (2) for detecting a respective environment of the head protection wearer, ii) has at least one movement detection device (7) for detecting a respective movement of the head protection wearer, and iii) causes the at least one airbag (4) to be triggered if the respective detected movement and the respective detected environment both indicate an accident. Head protection according to Claim 1, characterized in that the at least one movement detection device (7) has at least one movement detection sensor, the movement detection sensor preferably being designed as an acceleration sensor for detecting a respective acceleration of the head protection wearer. Head protection according to one of the preceding claims, characterized in that the at least one 3D environment detection device has at least one TOF device (2), in particular a TOF camera. Head protection according to one of the preceding claims, characterized by several of the 3D environment detection devices (2) on the base body (1; 1a) at the front for capturing a respective front environment in relation to the base body (1; 1a) and at the rear for capturing a respective rear environment in relation to the base body (1; 1a) are arranged. Head protection according to Claim 4, characterized by 3D environment detection devices (2) arranged laterally on the base body (1) for detecting a respective lateral environment in relation to the base body (1). Head protection according to one of the preceding claims, characterized in that the accident detection arrangement creates a 3D image of the environment based on the respective detected environment. Head protection according to one of the preceding claims, characterized in that the accident detection arrangement creates a movement profile of the head protection wearer on the basis of a respective detected movement of the head protection wearer. Head protection according to one of the preceding claims, characterized in that the accident detection arrangement is a processing device (8) for triggering the at least one airbag (4) when an accident is detected. Head protection according to Claim 8, characterized in that the at least one movement detection device (7) and the at least one 3D environment detection device (2) are at least temporarily in signal connection with the processing device (8). Head protection according to Claim 7 and according to Claim 8 or 9, characterized in that the processing device (8) takes movement profile signals and environmental signals into account. Head protection according to one of the preceding claims, characterized in that the accident detection arrangement continuously evaluates the respective detected environment and a respective detected movement of the head protection wearer. Head protection according to one of the preceding claims, characterized by hearing protection which is only active when the at least one airbag (4) is deployed to dampen an airbag deployment noise. Head protection according to one of the preceding claims, characterized in that the base body (1) is designed as a helmet, in particular a protective helmet. Head protection according to one of the preceding claims, characterized in that the base body (1a) is designed as a headband. A method for at least partially protecting a head protection wearer, comprising the steps of - Providing a base body (1; 1a) and at least one airbag (4) arranged on the base body (1; 1a) and one on the base body (1; 1a) and at least temporarily connected to the at least one airbag (4). accident registration arrangement, - detecting a respective environment of the head protection wearer by means of at least one 3D environment detection device (2) of the accident detection arrangement and detecting a respective movement of the head protection wearer by means of at least one movement detection device (7), and - causing the at least one airbag (4) to be triggered by the accident detection arrangement if the respective detected movement and the respective detected environment both together indicate an accident.

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