Battery pack, helmet accessory system and safety helmet system with vibration alarm, and method for operating helmet accessory system

Abstract

The invention relates to a battery pack (100) for securing to a safety helmet (30) and for supplying energy to helmet accessories, the battery pack (100) comprising: a battery module (12) for storing and outputting electrical energy; a supply and communication connection (14) for supplying energy to a helmet accessory that can be coupled to the battery pack (100), and the supply and communication connection (14) for communication; a mounting device (214) for securing the battery pack (100) to the safety helmet (30); the vibration module (16) is used for generating mechanical vibration; a control unit for controlling the functions of the battery pack (100), the functions including the functions of the vibration module (16); wherein the control unit is designed to control the vibration module (16) on the basis of a communication signal received at the supply and communication connection (14). The invention also relates to a helmet accessory system comprising a battery pack (100) and a helmet accessory, and to a safety helmet system comprising a safety helmet (30) and a helmet accessory system. Furthermore, the invention relates to a method (300) for operating a helmet accessory system.

Description

Technical Field

[0001] The present invention relates to a battery pack, a helmet attachment system and a protective helmet system each having a vibration alarm, and a method for operating such a helmet attachment system. Background Art

[0002] For many jobs, especially in the forestry field, it is necessary to wear a protective helmet. For example, a corresponding protective helmet is known from DE 87 14 490 U1, which includes a helmet shell having an internal fitting with a component for contacting the head, at least one support cage, a headband and a neckband, and the helmet shell includes means for fastening the component to the helmet shell.

[0003] This known protective helmet represents a basic helmet that can be adapted to various tasks under different usage conditions by changing the additional components. The protective helmet consists of a helmet shell and a minimum internal fitting. The internal fitting consists of a cross-shaped strap by which the helmet is worn on the head, and the cross-shaped strap ensures an impact-resistant distance between the head and the helmet shell. Around the outer periphery of the protective helmet, there are protrusions that surround the lateral and rear portions of the helmet and include four recesses for fastening the cross-shaped strap and additional recesses for fastening additional add-on components at its lower edge. This basic version of the helmet can be used as a simple general-purpose helmet without any additional parts. Additional parts can be added or removed as needed.

[0004] Helmet attachments to be fastened to the protective helmet in a meaningful way also include a helmet light that additionally illuminates, for example, the operating range of the user of the protective helmet or other areas (especially in a manner similar to a headlamp). This additional illumination of the operating range or other areas can be advantageous not only during dawn and dusk and after nightfall, but also in areas where daylight is shielded, such as under a closed tree canopy during twilight. In addition, a helmet light that can be fastened to the protective helmet can also be advantageous in most activities. For example, if a suitable lighting device in the form of a helmet light is carried by a person ready for use, then maintenance operations on construction machinery at a construction site at night or under a dark and poorly lit supply tunnel or bridge can be carried out in a better and more efficient manner.

[0005] Such a helmet light usually generates light from electrical energy, and the electrical energy required for this is usually stored and carried in chemical form, such as as a battery pack or a rechargeable battery pack.

[0006] Another useful helmet accessory represents a hearing protection device which can be worn during the use of a protective helmet in order to attenuate potentially present noise, for example during forestry or construction work. However, in doing so, all sounds in the user's environment are attenuated, so that their perception of other acoustic signals also deteriorates. In addition, loud ambient sounds already prevent the perception of acoustic (warning or information) signals. Such signals which the user typically wants to perceive in a reliable manner include, for example, all acoustic signals of a mobile phone being carried. In order to improve the perception of mobile phone signals, it is known to equip the mobile phone with a vibration alarm. However, due to the physical activities performed by the user of the protective helmet at this time and the protective clothing to be worn thereby, which can include additional padding, cut protection devices, etc., this vibration alarm is also only difficult to perceive. Summary of the Invention

[0007] The present invention is based on the object of solving or at least alleviating this problem.

[0008] This object is achieved by a subject matter having the features of the independent claims. Advantageous designs and further developments result from the dependent claims.

[0009] A battery pack for fastening to a protective helmet and for the energy supply of a helmet accessory according to the present invention provides that the battery pack includes: a battery module for storing and outputting electrical energy; a supply and communication terminal for the energy supply of the helmet accessory and for communication, the helmet accessory being able to be coupled to the battery pack; a mounting device for fastening the battery pack to the protective helmet; a vibration module for generating structure-borne noise; a control unit for controlling the functions of the battery pack, including the function of the vibration module; wherein the control unit is adapted to drive the vibration module based on a communication signal received at the supply and communication terminal. Thus, acoustic and tactile signals (the output of which is transmitted or requested by another device, for example a mobile phone communicatively connected to the battery pack, which charges the battery pack and / or supplies power to the helmet accessory) are transmitted from the control unit of the battery pack to the user in a reliable manner via the protective helmet itself by means of a communication signal sent to the supply and communication terminal. The communication signal requesting activation of the vibration module can reach the communication terminal in different ways, for example via a fully wired connection or at least partially radio-based connections, such as Bluetooth, NFC, etc.

[0010] Advantageously, it can be provided that the vibration module is integrated in the battery body or is integrally formed with the mounting device. In this way, the battery body or the battery pack including the battery body or the mounting device can have a dual function. The battery body thus serves on the one hand for the energy supply of the helmet attachment and at the same time outputs a haptic notification signal to the user of the protective helmet. Alternatively, the mounting device serves for fastening the battery pack and at the same time outputs a haptic notification signal to the user of the protective helmet.

[0011] Alternatively, it can be provided that the vibration module is fastened to the battery body in a detachable manner or is fastened to the mounting device in a detachable manner. In this way, an optional retrofit of the battery pack or the mounting device can be achieved, wherein by means of this retrofit, the dual function mentioned above is achieved.

[0012] Advantageously, it can be provided that the vibration module includes holding means for fixing the vibration module to the battery pack or the mounting device. In this way, the corresponding design of the battery pack or the mounting device can remain very simple, which enables a cost-effective retrofit of an already existing battery pack (with an associated mounting device) that is at least roughly prepared for such a retrofit.

[0013] Furthermore, it can be provided that the holding means is adapted to fix the vibration module magnetically and / or mechanically. Both magnetic fixing and mechanical fixing, for example by means of clamping devices, allow a simple and reliable detachable fastening of the vibration module to the battery pack or the mounting device.

[0014] It can also be provided that an electrical connection between the battery pack and the vibration module is formed by the holding means. In this way, the provision of additional electrical contacts for connecting the vibration module to the battery pack can be dispensed with.

[0015] Advantageously, it can be provided that the vibration module includes a support surface which, when the battery pack is fastened to the protective helmet by means of the mounting device, abuts against the helmet shell of the protective helmet. By providing the support surface, it is possible to particularly efficiently transmit / introduce the generated haptic vibration signal into the helmet shell of the protective helmet, which serves as a resonator. Correspondingly, a vibration module that consumes only little electrical energy is required, which increases the energy efficiency.

[0016] In particular, it can also be provided that the battery pack includes at least one sensor unit for detecting the operating state of the battery pack and that the control unit is adapted to drive the vibration module based on the detected operating state. In this way, the battery pack itself can independently send haptic (vibration) signals to the users of the protective helmet to attract their attention. For example, a charge status warning, a temperature warning, etc. can be output.

[0017] It can also be provided that the control unit forms a drive for synchronizing the helmet attachment with the vibration module. In this way, the user's attention can be directed to the signal output by the vibration module in an even more efficient manner.

[0018] The helmet attachment system according to the invention comprises such a battery pack and a helmet attachment, in particular a helmet light, wherein the battery and the helmet attachment can be fastened or are fastened to the helmet shell of the protective helmet. The protective helmet system according to the invention comprises a protective helmet and such a helmet attachment system. In this way, the object of the invention is also achieved by the helmet attachment system and the protective helmet system.

[0019] The method according to the invention for operating such a helmet attachment system comprises receiving a communication signal at the supply and communication terminal of the battery pack and driving a vibration module via a control unit based on the received communication signal. In this way, the object of the invention is also achieved by a method.

[0020] In other cases, the additional advantages described in connection with the battery pack can similarly be achieved by the helmet attachment system and the protective helmet system as well as the method according to the invention, wherein optionally the corresponding physical characteristics of the battery pack are taken into account in a methodical manner. Description of the Drawings

[0021] The exemplary design of the invention or the exemplary design of some components and parts of the invention will be described in more detail below with reference to the drawings.

[0022] In the figures:

[0023] Figures 1a to 1k Three-dimensional external views of the battery pack are shown from different viewing directions and in different embodiments;

[0024] Figures 2a to 2c Three-dimensional representations of the connector plug are shown from different viewing directions;

[0025] Figure 2d and Figure 2e The internal arrangement of the connector plug is shown from different viewing directions;

[0026] Figure 3a and Figure 3b Three-dimensional external views of the charging plug are shown from different viewing directions;

[0027] Figure 3c and Figure 3d The internal arrangement of the charging plug is shown from different viewing directions;

[0028] Figure 4a and Figure 4b Three-dimensional representations of the charging connection of the battery pack are shown;

[0029] Figure 5a and Figure 5b shows the internal arrangement of the battery pack as seen from different viewing directions;

[0030] Figures 6a to 6f shows a three-dimensional representation of the mounting means as seen from different viewing directions;

[0031] Figure 7 shows a first three-dimensional view of the vibration module;

[0032] Figure 8 shows a second three-dimensional external view of the vibration module;

[0033] Figure 9 shows a side sectional view of the protective helmet and the battery pack, with the helmet light fastened to the protective helmet; and

[0034] Figure 10 shows a flow chart of a method for operating a helmet attachment system.

[0035] In the following description of the drawings, the same reference numerals denote the same or corresponding parts. Detailed Description of the Invention

[0036] Figures 1a to 1k Each shows a three-dimensional external view of the battery pack 100. These representations are partially simplified so as not to be dominated by irrelevant details. Figure 1a shows the battery pack 100 in a deactivated state. Figure 1a The battery pack 100 represented in includes a substantially elongate cuboid battery body 194 with bevelled edges, as Figure 1a represented. As an alternative, rounding of the edges can also be envisaged. On one side of the battery body 194, the display and operation element 102 is represented in Figure 1a in an inactive state. In the lower side region of the battery pack 100, the connector plug 192 can be discerned. The battery pack 100 can be connected via the connector plug 192 to, for example, the helmet light 10 represented in Figure 9 . In Figure 1a , the battery pack 100 is represented in its deactivated state, such that the display and operation element 102 does not display anything as a result. However, it is conceivable that, for example, the display and operation element 102 can be used to switch on and off the individual display elements on the display and operation element 102 and can therefore also be "marked" so as to identify the operation element even in the absence of current.

[0037] Figure 1b From the same direction as Figure 1aThe battery pack 100 is shown on the side opposite to the display and operation element 102, such that the rear side of the battery pack 100 is visible. The rear side of the battery pack 100 can be constructed in different ways as required.

[0038] Figure 1c The battery pack 100 in the enabled state is shown. Figure 1a The display and operation element 102, not specified separately herein, shows various information of the user, especially when the battery pack 100 itself is enabled. The display and operation element 102 can graphically represent, for example, the temperature display 2000, the battery charge level display 2002, and the on / off button 2004, optionally with an LED backlight 2006. For this purpose, the display and operation element 102 can have a display area 2008, below which the on / off switch element can be arranged, especially as a foil switch, such that touching the represented on / off switch 2004 can turn the battery pack 100 or the connected helmet light 10 on and off, for example. In particular, the temperature display 2000 can graphically represent the temperature of the battery pack 100. This is important because the capacity and output performance of the battery pack 100 vary with temperature. Of course, optionally, the display area 2008 can also graphically represent other or additional information about the helmet light 10 or the battery pack 100. For example, in the display area 2008, if the battery pack 100 is connected to the helmet light 10 via a connector plug 192, an error message of the helmet light 10 can be graphically represented. Below the connector plug 192, the charging plug 190 can also be Figure 1c identified in Figure 1c As shown, the charging plug 190 can be connected to the battery pack 100 with the connector plug 192 inserted. Alternatively, the battery pack 100 can also be directly connected to the charging plug 190 without the inserted connector plug 192. For example, if needed, in Figure 1c the LED backlight 2006 indicated by the hatching around the on / off button 2004 can also provide a "backlight function" for the user, because the alignment of the battery pack 100 on the protective helmet 30 in the installed state allows for the corresponding function. Alternatively or additionally, one or more (especially red) LEDs can be separately provided on the housing of the battery body 194.

[0039] Relative to the represented viewing angle, Figure 1d the external view of the battery pack 100 shown in Figure 1c corresponds to Figure 1c However, compared with Figure 1d the battery pack 100 in Figure 1c is represented in a different operating state. In the case of the battery pack 100 represented inFigure 1d In the case of the battery pack 100 shown in, the LED backlight 2006 is deactivated, which is indicated by the absence of hatching. In the same way, in the area of the battery charge level display 2002, recognizable hatching can visualize the current charge level of the battery pack 100. The temperature display 2000 can visualize the temperature of the battery pack 100, for example, by means of a color change or in another suitable way. Alternatively, it is also conceivable that near or instead of the recognizable symbol in Figure 8 d, the temperature display 2000 directly indicates the temperature of the battery pack 100 in the figure. For example, in Figure 1d the on / off button 2004 shown in and Figure 1c and Figure 1d can provide different functions. For example, the on / off button 2004 can turn on or off the helmet light 10 connected to the battery pack 100. As long as no helmet light 10 is connected to the battery pack 100, the on / off button 2004 can, for example, place the battery pack 100 itself in different operating states. For example, an on / off button 2004 can be provided to query at least some of the information that can be displayed on the display area 2008, which helps and in particular enables or disables the battery charge level display 2002. The change in the function provided by the on / off button 2004 can be achieved according to the plugs (i.e., the charging plug 190 and the connector plug 192) respectively connected to the battery pack 100, where the internal logic circuit of the battery pack 100 identifies which plug is connected to the battery pack 100 based on the measurable voltage at the connection contacts of the battery pack 100 described in more detail below. The internal logic circuit of the battery pack 100 can be regarded as the basic control unit of the battery pack, which can drive the battery pack 100 or provide some basic functions of the battery pack 100. The special design of the charging plug 190 and the connector plug 192 allows the connector plug 192 and the charging plug 190 to be connected to the battery pack 100 simultaneously, so that, for example, several batteries can also be connected to the helmet light 10 of the helmet light system at the same time. In addition, the battery pack 100 can also be charged during the use of the helmet light 10.

[0040] In addition to the helmet light 10, the helmet light system may further include a transmission and reception module and an input device having an additional transmission and reception module, wherein the helmet light 10 can be switched between several operating modes and operating states. Then, the input device can be connected to the helmet light 10 in a form of two-way communication via the transmission and reception module and the additional transmission and reception module. For example, the input device can be a mobile phone. Thus, when the helmet light 10 is connected to the input device, the helmet light 10 can be controlled via the input device, and the input device can also receive operation information from the helmet light 10 in the opposite direction. In this way, the input device can be positioned as an operation unit for the helmet light 10 as needed and can be particularly arranged within the user's field of view, so that the operation of the helmet light system is simplified. The transmission and reception module and the additional transmission and reception module can be radio modules or cable binding modules. The two-way communication between the helmet light 10 and the input device can be established through a general communication protocol. The use of the general communication protocol also allows for more complex control of the helmet light system, which goes beyond the simple closing of the circuit for turning on and off. The control of the helmet light system can correspondingly be flexible. The input device can particularly send a communication signal to the battery pack 100, optionally via the helmet light 10 and then from there to the battery pack 100, to drive the vibration module 16 described below. Other components of the helmet light system can also send communication signals to the battery pack 100 to drive the functions of the battery pack, particularly to drive the vibration module 16.

[0041] The two-way communication used can be protected by encryption. In this way, unintentional external operations of any input device connected to the helmet light 10 of the helmet light system randomly can be prevented. This is particularly advantageous when several helmet light systems are used and their respective input devices are close together. In this case, it can be stipulated that a password be entered to protect the connection. The operation information received by the input device can also include the status information of the helmet light system. Then, the input device can output the status information of the helmet light system. This also facilitates the operation of the helmet light system. The helmet light 10 of the helmet light system can also be connected to another input device when it has already been connected to an input device. The helmet light 10 can then be mainly controlled by the other input device. In this way, for example, priority operations such as turning on a camera, a helicopter light or a positioning light can be performed by an operation guide or a monitoring system installed at a certain location, if the helmet light system has such a possibility. Similarly, the shutdown of individual operation functions can be prevented by a higher-level instance or the output of a tactile vibration signal through the vibration module 16 can be initiated.

[0042] The helmet light system can be supplemented by a camera unit, which already includes at least one helmet light 10 with a control controller and the at least one helmet light can be switched by the control controller to a number of operating modes and operating states, and the camera unit is then operatively connected to the control controller. Once the helmet light 10 of the helmet light system is enabled, the control controller can enable the connected camera unit. It is also possible that the enabling has already occurred as long as the helmet light system is in standby mode and has not emitted any light. This allows for the automatic recording of what the user of the helmet light system does and sees. In particular, it can prevent the user from forgetting to comply with possible recording obligations. The enabling or disabling of the individual components of the helmet light system (such as the camera unit or the helicopter light) can be presented to the user haptically via a vibration signal through a vibration module, in particular by a specifically coded vibration pattern that can uniquely identify the operating state of the helmet light system by the executed changes.

[0043] The camera unit can internally store the recorded video. In this way, long-term archiving can be carried out. The camera unit can also send the recorded video to the helmet light 10, for example, for storage in a memory integrated into the helmet light 10. In this way, long-term archiving can also be carried out. Preferably, it is provided that the control controller transfers the video recorded by the camera unit as operating information to an external storage device that can be connected to the helmet light system. In this way, an almost infinite recording period can be achieved. The external storage device can also be called by a third party, in particular for the optical representation of the video, in order to provide assistance to the user of the helmet light system, for example, in case of problems. For example, guiding the user to solve the problem. In particular, for this purpose, the helmet light system can include headphones through which the user can communicate with the third party providing the assistance. The communication can be carried out, for example, via a mobile radio connection, where the helmet light system is, for example, connected to an input device providing a mobile radio connection, such as a mobile phone. The control controller can be set to adjust the recording direction of the camera unit according to the operating mode and / or operating state of the helmet light 10. This can improve the quality of the recording taken by the camera. In particular, the recording direction and brightness of the resulting recording can be set.

[0044] The control controller can also be set to adjust the dynamic focal length of the camera unit according to the operating mode and / or operating state of the helmet light. In this way, the recording quality of the camera can also be improved. This can be done, for example, by adjusting the zoom, for example, to widen or reduce the viewing angle.

[0045] The features of the above-mentioned helmet light system can generally also be implemented and realized within the framework of a method for operating the helmet light system, which can then be executed by the control controller of the helmet light. All changes to the operating state of the above-mentioned helmet light system can be additionally presented to the user via an acknowledgement signal, where for this purpose, a corresponding communication signal can be sent to the battery pack, and then a characteristic vibration sequence can be output via the vibration module 16.

[0046] Figure 1e Figure 4 shows the battery pack 100 as seen from the rear, where, Figure 1b in contrast, in addition to the connector plug 192, the charging plug 190 is also connected to the battery pack 100. The functions of the plugs will be explained in more detail below.

[0047] Figure 1f and Figure 1g Figure 5 shows a three-dimensional detailed view of the battery pack 100. Figure 1f Figure 6 shows a section of the upper side of the battery pack 100, while Figure 1g Figure 7 shows a section of one side of the battery pack 100. A pair of stop lugs 212 can be identified on the upper side. Lateral stop lugs 210 are present on the said side of the battery pack 100. Advantageously, if lateral stop lugs 210 are provided on one side, additional lateral stop lugs can be provided on the opposite side. The stop lugs 212 and the lateral stop lugs 210 (and possibly additional lateral stop lugs) can in particular cooperate with the mounting means 214, which will be described below, and the battery pack 100 is fixed to the protective helmet 30 by means of the mounting means 214. The stop lugs 212 and the lateral stop lugs 210 are only shown in Figure 1f and Figure 1g but can also be provided in the battery pack 100 shown in other figures.

[0048] Figure 1h , Figure 1i and Figure 1j as well as Figure 1k show the battery pack 100 without the connected plugs from different perspectives. Figure 1h The battery pack 100 represented in Figure 8 is in the off operating state, such that the display area 2008 does not show any content. However, it is also conceivable that the display area 2008 also shows at least the on / off button 2004 in a currentless state, for example in the form of a transparent foil image. In the lower side region of the battery pack 100, the electrical contact surface 1112c is visible on the end face 1124 of the battery body 194. In addition, the notch-shaped recess 1114a is visible, which is used to center the connector plug 192 or the charging plug 190 and at the same time prevent the plug from breaking off laterally from the battery pack 100 in the mounted state. Figure 1fShows the battery pack 100 as seen from the other side, so that the recess 1114a on the end face 1124 of the battery body 194 can be more clearly identified. Figure 1i The battery pack 100 is represented in such a way that the other end face of the battery pack 100 opposite the end face 1124 is visible, and this other end face can be designed to be, for example, completely smooth. However, if required, additional connection possibilities in the form of electrical contact surfaces, guiding elements or additional operating elements can also be arranged on this other end face. In particular, the connection possibilities shown can already represent supply and communication terminals, and communication signals for driving the vibration module 16 can be received on these supply and communication terminals.

[0049] In Figure 1b 、 Figure 1e and Figure 1j it is possible to identify the respective rear sides of the battery body 194 opposite the display area 2008. On this rear side of the battery body 194, the recess 26 can be seen in the middle. The recess 26 is used to receive the vibration module 16, as shown, for example, in connection with Figure 7 and Figure 8 separately. On the opposite boundary surface of the recess 26 (in the axial main extension direction of the battery body 194), the provided holding means 18 are indicated. These holding means 18 can be formed, for example, in the shape of holding magnets that magnetically fix the vibration module 16 in the recess 26. At the same time, the electrical contacts required to operate the vibration module 16 can be realized via the holding magnets, because when the vibration module 16 is fastened to the battery pack 100, these holding magnets can be conductively connected to the (metal) contacts 22 on the vibration module 16.

[0050] Figure 1k The battery body 194 is also shown, in which the vibration module 16 is integrated into the battery body 194 itself. Thus, instead of the recess 26, there is a positively trapezoidal cross-section (cross-section relative to the axial main extension direction of the battery body 194) formed / caused by the vibration module 16 below on the housing of the battery body 194.

[0051] When the vibration module 16 is inserted into the Figure 1b 、 Figure 1e or Figure 1j the recess 26 shown in, the combination of the battery body 194 and the vibration module 16 can have external dimensions corresponding to the external dimensions of the battery body 194 corresponding to Figure 1k .

[0052] Figure 2a 、 Figure 2b and Figure 2c show three-dimensional representations of the connection plug 192 as seen from different viewing directions. Figure 2a and Figure 2cThe connection side of the connector plug 192 provided with the electrical contact 1108a is shown. The protrusion 1116a can be clearly recognized on this connection side, and the protrusion 1116a and the recess 1114a together form a guiding element, and the recess 1114a can be recognized, for example, in Figure 1f which helps to position the connector plug 192 on the battery pack 100. The protrusion 1116a and the notch 1114a of the battery pack 100 center the connector plug 192 on the battery pack 100. In this way, a blind mating of the battery pack 100 and the battery plug 192 can be performed. Figure 2b A representation of the battery plug 192 as seen from the side opposite to the electrical contact 1108a is shown.

[0053] The electrical contact 1108a can include individual pin contacts. These pin contacts can be designed to be, for example, telescopically compressible, and in particular, a prestress can be provided for the extended state of the pin contacts. In this way, when the connector plug 192 is combined with the battery pack 100, the electrical contact closure can be reliably ensured by the generated contact pressure, without any risk of the electrical contact 1108a bending on the corresponding associated electrical contact surface 1112c, and the electrical contact surface 1112c can be specifically implemented as a smooth or flat surface. Each pin contact can have, for example, a spring-like element to achieve the prestress. However, alternative designs are also known to those skilled in the art. This design also allows the plug to be disconnected laterally from the battery pack.

[0054] The recess 1114b is also provided on the side opposite to the electrical contact 1108a, as Figure 2b shown, that is, on the rear side of the battery plug 192. In addition, the electrical contact surface 1112a can also be recognized, and the electrical contact surface 1112a is used to electrically connect the connector plug 192 to the charging plug 190.

[0055] The entire interior of the connector plug 192 can be cast from a casting composition 1110a. Then, the casting composition 1110a forms the housing of the battery plug 192. Alternatively, a housing shell can also be manufactured, and the housing shells are then tightly connected to each other to achieve a function similar to that of the housing of the casting composition 1110a, especially fluid tightness. Providing interconnected housing shells can have advantages in terms of the replaceability or control of the various components inside the connector plug 192, thereby improving the environmental friendliness of the helmet light 10 as a whole.

[0056] With different possible and matching combinations of the protrusions 1114a, 114b and the recesses 1116a, 1116b, a simple joining aid for the plug connector can be achieved, which does not prevent a simple release in the case of a pulling force on the connector plug 192 and at the same time ensures that, in the absence of a pulling force, the electrical contacts closed by means of the plug connector remain firmly and, most importantly, correctly connected to each other. If the corresponding protrusions and recesses are arranged asymmetrically on the contact surface, a simple anti-rotation protection is achieved.

[0057] Figure 2d and Figure 2e The possible internal arrangement of the connector plug 192 is shown from two substantially opposite viewing directions such that the front side and the rear side of this internal arrangement are visible. For the sake of simplicity, the cable connection of the connector plug 192 leading away from the connector plug 192 is omitted. The PCB 1106a, on which the known electrical contact 1108a is arranged, is located inside the connector plug 192 and is covered by a casting composition 1110a or a housing fulfilling the same function. The electrical contact surface 1112a can be identified on the opposite side. Both the electrical contact 1108a and the electrical contact surface 1112a pass through the casting composition to the surface of the connector plug 192 such that additional components can make electrical contact with the connector plug 192 on both elements. Two magnets 1104a are located in the lateral regions of the PCB 1106a. The magnets 1104a cooperate with corresponding mating parts in the battery pack 100 or the charging plug 190 such that a polarity reversal of the electrical connection can be excluded during connection. This serves as an additional safety measure. In addition, the magnets 1104a together with the corresponding mating parts on the battery pack 100 automatically pull the connector plug 192 into the correct position and ensure a firm hold together between the connector plug 192 and the battery pack 100 even under mechanical loads in the joining direction.

[0058] With this coupling and simultaneous connection mechanism, if a user of a protective helmet 30 equipped with a helmet light system makes an inadvertent movement while wearing the protective helmet 30, the interlocking cable loop of the connection cable 24 can generally be opened. Once the tension on the hooked cable loop exceeds the holding force that can be exerted by the magnets 204, 1104a, 1104b, the connector plug 192 is automatically released from the battery pack 100 when the cable loop opens. This release can trigger the activation of the vibration module 16 by a basic control unit provided in the battery pack, in order to notify the user of this accident (the separation of the helmet light 10 from the battery pack 100), which is advantageous, especially when the helmet light 10 includes a smaller integrated energy storage device for such an emergency. In addition, since the magnets 204, 1104a, 1104b automatically pull the two parts of the plug connection to the correct position, the connection of the connector plug 192 to the battery pack 100 is facilitated, thus greatly simplifying the blind closing of the connection. The re - establishment of the connection can also trigger a vibration signal through the vibration module 16.

[0059] Figure 3a and Figure 3b shows a three - dimensional external view of the charging plug 190 seen from different viewing directions. Similar to the connector plug 192, from Figure 1d and Figure 1e the known charging plug 190 also has a protrusion 1116b,. In addition, electrical contacts 1108b are provided on the same side of the charging plug 190. Similar to the connector plug 192, the housing of the charging plug 190 is also formed by a casting composition 1110b, where a fluid - tight setting of the individual housing elements (especially the housing shell) is also possible here. Different from the case of the connector plug 192, on Figure 3a the side of the charging plug 190 opposite to the side with the electrical contacts 1108b as shown, there is no electrical contact surface. By means of the possible combination of the protrusion 116b and the recess, a simple joining aid for the plug connection can be achieved, which does not prevent a simple release in the case of a pulling force on the connector plug and at the same time ensures that in the absence of a pulling force, the electrical contacts closed by the plug connection remain firmly and most importantly correctly connected to each other. Pulling or connecting the charging plug 190 can also trigger a vibration signal through the vibration module 16, similar to the connection and pulling of the connection plug 192.

[0060] In this case, it can be stipulated that the protrusion and the recess are each formed asymmetrically, preferably asymmetrically at an edge of the respective connection surface. Thereby, a simple anti - rotation protection is achieved.

[0061] Figure 3c and Figure 3dShows a possible internal arrangement of the charging plug 190 as seen from two substantially opposite viewing directions, such that the front and rear sides of this internal arrangement are visible. The PCB 1106b of the charging plug 190 disposed inside the charging plug 190 is shown respectively, similar to the connector plug 192, on which there are also provided electrical contact surfaces 1112b, electrical contacts 1108b, and magnets 1104b.

[0062] Thus, the arrangement of the represented PCB 1106b is largely similar to that of the Figure 2d and Figure 2e known PCB1106a. Since the PCB 1106b is associated with the charging plug 190, the PCB 1106b can have a different arrangement with respect to the represented electrical contact surfaces 1112b and electrical contacts 1108b, which is particularly fewer individual electrical contact pins including the electrical contacts 1108b. This can be attributed to the fact that the charging plug 190 is usually attached last or only temporarily connected to the battery pack 100, especially when the electrical contacts 1108b of the charging plug 190 have to be "conducted" to the connector plug 194 of the battery pack 100 that has been fastened to the battery pack 100. In this case, it can be envisioned that, for example, the PCB 1106b and the PCB 1106a are substantially the same in their respective arrangements, but as needed, particularly fewer electrical connection members are led out to the outside of the surface of the charging plug 190. If the same PCB can be used for the charging plug 190 and the connector plug 192, and only components such as the electrical contacts 1108a and 1108b change, for example, then this can reduce the number of different components.

[0063] Figure 4a and Figure 4b Each shows a three-dimensional representation of the charging connection of the battery pack 100. In the lower side regions of both Figure 4a and Figure 4b , the battery body 194 of the battery pack 100 is partially visible. In Figure 4a , in the upward termination region of the battery body 194, the connector plug 192 has been placed. In the representation selected in Figure 4a , the connector plug 192 includes a circumferential sealing lip 196 that radially inwardly points with respect to the axial longitudinal extension of the battery body 194. The sealing lip 196 is axially located below the protruding circumferential collar 196a of the connector plug 192. The sealing lip 196 is particularly used to establish a sealed connection, i.e., a fluid-tight connection, between the connector plug 192 and the charging plug 190, which is in Figure 4ais not shown and can be placed on the battery body 194 in the axial extension direction. This is relevant because if moisture appears during the existing current flow between the connector plug 192 and the charging plug 190, the electrical connection point between the connector plug 192 and the charging plug 190 will be more severely corroded. It should be noted in this regard that the connector plug 192 described above in Figures 2a to 2c does not have such a collar 196a and also does not have a sealing lip 196, but can be supplemented by these elements in a simple manner. Alternatively, of course, it can also be conceived that the collar 196a and the sealing lip 196 are not provided on the connector plug 192, but on the charging plug 190. Then, this will have the following advantage: the electrical contact 1108b of the charging plug 190 protruding from the plane of the connector plug receives additional protection against mechanical damage by the collar 196a.

[0064] Figure 4a Further shown are charging contacts 198 and communication contacts 200. The charging contacts 198 and the communication contacts 200 are located on the surface of the connector plug 192 surrounded by the sealing lip 196. Due to the arrangement structure of the charging contacts 198 and the communication contacts 200, a non-rotatable mounting of the charging plug 190 (not shown) can be achieved. The special arrangement structure of the charging contacts 198 and the communication contacts 200 will be understood as an example. In particular, the charging contacts 198 and the communication contacts 200 can be further subdivided. It can also be conceived that in addition to Figure 4a the shown charging contacts 198 and communication contacts 200, additional contacts are also provided on the surface of the connector plug 192 surrounded by the sealing lip 196. When the electrical contact surface 1112a of the charging plug 190 on the connector plug 192 is implemented to be fixed in rotational movement, for example, half of the charging contacts 198 and the communication contacts 200 can be together inside the connector plug 192 in order to achieve simple fixity in rotational movement in this way. Figure 4a and Figure 4b the connection surfaces of the battery pack 100 and the connector plug 192 shown in do not have protrusions or grooves as described, for example, in the previous figures, in order to achieve anti-rotation protection. However, these can be supplemented in a simple manner.

[0065] Figure 4bDenotes the upper part of the battery body 194 of the battery pack 100 without the connector plug 192. Similar to the free end of the connector plug 192, the upper part of the battery body 194 includes a sealing lip 208 which is arranged behind the collar 208a in the axial extension direction of the battery body 194 and which surrounds the end face of the battery body 194. Electrical contact surfaces in the form of communication contacts 202 and connection contacts 206 are also indicated on the end face of the battery body 194, where the connection contacts 206 can also optionally be referred to as charging contacts. The provision of the connection contacts 206 serves both to supply electrical energy to the connected helmet light 10 and to charge the battery pack 100. It should also be noted that the corresponding communication contacts 200, 202 and connection contacts 206 or charging contacts 198 are shown as recessed relative to the respective end face, i.e. below the respective outward-facing housing surface. This arrangement is optional, and it can also be stipulated that all or at least some of the contacts terminate flush with the respective outward-facing housing surface. In addition, the sealing lip 208 and the associated collar 208a can equally be arranged on the connector plug 192. The electrical contact surfaces also correspond to Figure 1k and Figure 1j the supply and communication terminals 14 in

[0066] Furthermore, magnets 204 are indicated on the end face of the battery body 194, which can hold the connector plug 192 on the battery body 194 in the desired connection position. Like the sealing lip 196 on the connector plug 192, the sealing lip 208 ensures a waterproof electrical contact between the battery body 194 and the connector plug 192 or charging plug 190 that can be connected thereto (if the charging plug 190 is directly connected to the battery body 194 to charge the battery pack 100). The magnets 204 are shown in Figure 4b on the visible surface of the end face of the battery body 194 in. However, they can also be arranged invisibly, especially to prevent corrosion of the magnets 204, which are arranged below the protective housing of the battery body 194, i.e. in the housing of the battery body 194. This arrangement of the magnets 204 is optional. However, if the magnets 204 are present, with a suitable choice of the poles pointing away from the battery body 194, they can not only be used to fix the plug to be connected in the desired position, but also provide anti-rotation protection, provided that the plug to be connected, the connector plug 192 or the charging plug 190 also has a magnet with a suitable orientation.

[0067] Figure 5a and Figure 5b show the internal arrangement of the battery pack 100 as seen from different viewing directions, where, for the sake of simplicity, the explicit representation of the electrical connection lines is omitted. In Figure 5a and Figure 5bTwo battery cells 1118 can be respectively identified therein. These battery cells 1118 have a conventional cylindrical shape in the axially extending direction. The two battery cells 1118 are electrically connected in parallel or in series with each other and together form a battery module 12. The PCB 1106d and the cover 1122 electrically insulated from the PCB 1106d can be identified on the Figure 5a surface that points downward or backward therein and on the Figure 5b surface that points forward or upward. The cover 1122 can be made of, for example, a metal sheet and is electrically insulated from the PCB 1106d. Other electrical contact surfaces known from Figure 4b are also indicated on the PCB 1106d, but in an arrangement different from Figure 4b . At the center above the two battery cells 1118 forming the battery module 12, a vibration module 16, which is also cylindrical, is shown. It generally converts electrical energy into mechanical motion, and the mechanical motion also generates noise conducted in the form of vibration in the structure. This can be done, for example, in a known manner by a small electric motor, which includes an unbalanced mass on the rotational motor axis of the small electric motor. When the vibration module 16 is an integral part of the battery pack 100, the external shape of the battery pack 100, especially the battery body 194, is correspondingly adapted. In the case where there is no integrated vibration module 16, the battery body 194 can have an external shape with a recess 26, for example, Figure 1j as shown, where the recess 26 is suitable for receiving an external vibration module 16, as still described in connection with, for example, Figure 7 . However, when the vibration module 16 is integrated into the battery pack 100, the battery body 194 can have the shape shown in Figure 1k , where, instead of the recess 26, a raised portion shown in the figure is added, and the vibration module 16 is located below the raised portion.

[0068] The height or thickness dimension of the raised portion of the vibration module 16 inserted into the recess 26 is designed such that when the battery pack 100 is fastened to the helmet shell 36 by means of the mounting device 214, the vibration module 16 presses against or abuts flush with the helmet shell 36 of the protective helmet 30. In this way, the noise conducted in the structure generated by the vibration module 16 can be efficiently transmitted to the helmet shell 36. Thereby, the helmet shell 36 acts like a resonance amplifier, so that the user of the protective helmet 30 can well perceive the vibration and can already well perceive vibrations with low intensity (small energy content). This is especially applicable even when the user is wearing the Figure 9 hearing protection device 34 indicated therein, because the noise conducted in the structure generated by the vibration module 16 can be well perceived as a tactile signal under the helmet shell 36.

[0069] In addition to the PCB 1106d, another PCB 1106c is located on the upward-facing surface of the battery cell 1118, on which the foil cover 1120 is indicated, and the foil cover 1120 can have button and display functions for the battery pack 100. The button and display functions of the foil cover 1120 have been previously described in Figure 1c and Figure 1d . The PCB 1106d and / or the additional PCB 1106d can be equipped with electronic components not explicitly shown, which together form the control unit of the battery pack 100 in the sense of this application. This control unit of the battery pack 100 is adapted to perform at least the basic functions of the battery pack 100 after receiving the corresponding request signal, such as enabling the vibration module 16 based on receiving a communication signal, or automatically enabling the vibration module 16 in response to the connection or pulling of a plug on the battery pack 100. Figure 5b The components shown in Figure 5b can be cast into the housing of the battery body 194 or integrated in other ways, for example, to form the battery pack 100, as shown in the thumbnail in the upper right corner of

[0070] , where the battery pack 100 is shown there together with the connectors and charging plugs 190, 192, which are not described in detail here. The external shape of the battery pack 100 can of course be of variable design and, in particular, does not have to exactly correspond to the thumbnail.

[0070] A battery pack temperature sensor can also be arranged inside or on the surface of the battery pack 100. This battery pack temperature sensor can detect the battery pack operating temperature value of the battery pack 100, which is, for example, transmitted to and received by the control controller of the helmet light 10. Based on the received battery pack temperature value, the control controller can then change the operating state of the helmet light 10, for example, in order to keep the battery pack 100 within the allowable temperature range. The detected temperature value can also be the basis for outputting a tactile vibration signal through the vibration module 16. The battery pack 100 also includes an electric heating unit, which can be controlled by the control controller, in particular based on the received battery pack temperature value. For example, if the battery pack 100 drops below the lower temperature threshold T Akku_min , the control controller can turn on the electric heating unit. Of course, when another threshold slightly greater than the lower temperature threshold T Akku_min is exceeded, advantageously, the turn-off of the electric heating unit can also be temperature-controlled in a similar hysteresis manner. If the detected battery pack operating temperature value of the battery pack 100 exceeds the allowable temperature threshold T Akku_max, the control controller can further reduce the light output of the helmet light 10. By reducing the light output, that is, reducing the brightness of the helmet light 10, the power obtained from the battery pack 100 is reduced, which directly results in a reduction in the generated waste heat, enabling the temperature of the battery pack 100 to drop, assuming a constant emissivity of the waste heat to the environment. This can be advantageous, for example, in an environment with an explosion risk. Reaching a specific temperature value, such as T Akku_min or T Akku_max , the output of the vibration signal can also be triggered by the vibration module.

[0071] Figure 6a Figures 6h show various three-dimensional representations of the mounting device 214. In this case, the represented mounting device 214 is the battery holder 214 by means of which the battery pack 100 can be fixed to the protective helmet 30. The mounting device 214, which is at least partially represented in each figure, includes a frame 220 into which the previously described battery pack 100 can be inserted in an axial insertion direction. For this purpose, the frame 220 of the mounting device 214 has a substantially cylindrical external structure with a rectangular base surface with rounded edges. As can be recognized in Figure 6a , the frame 220 narrows at one end face in the axially extending direction, such that the battery pack 100 cannot enter or leave the frame 220 on this side. However, at the opposite end face in the axially extending direction of the frame 220, the frame 220 is formed in its cross-section to be substantially non-narrowing relative to the rest of the frame 220, such that the battery pack 100 can be inserted into the frame 220 of the mounting device 214 from this side. The cylindrical structure of the frame 220 of the mounting device 214 allows for the easy insertion of the battery pack 100 with a constant cross-section. The battery pack 100 can be fixed in the frame 220 of the mounting device 214 by means of elastic tabs 224. If the battery pack 100 includes an integrated vibration module 16 having a raised portion caused by integration (the raised portion represents a protrusion), the frame can have a corresponding recess to enable the battery pack 100 to slide in. By means of tapering, a stop can be achieved when the battery pack 100 is inserted into the mounting device 214, where the tabs 224 arranged at the other end simultaneously clamp the inserted battery pack 100 within the frame 220. The frame 220 of the mounting device 214 encloses a space in which the battery pack 100 can be arranged, such that most of the area remains empty, such that the battery pack 100 remains visible through the frame 220 of the mounting device 214. In this way, in particular, sufficient heat dissipation of the battery pack 100 during the charging / discharging process can be ensured, since the frame 220 does not otherwise thermally insulate the inserted battery pack 100 from the environment.

[0072] The frame 220 of the mounting device 214 is further adjacent to the upper retaining arms 216a and 216b. The upper retaining arms 216a and 216b each lead to upper retaining hooks 218a, 218b, which are ultimately used to fasten the mounting device 214 to the helmet shell 36. Each of the upper retaining hooks 218a and 218b includes a step 223 that receives the displaceability of the ventilation slider 50 on the helmet shell 36. In addition, the lower retaining hooks 222a and 222b are also directly arranged on the frame 220 of the mounting device 214. The upper retaining hooks 218a, 218b and the lower retaining hooks 222a, 222b together are used to firmly fix the mounting device 214 to the helmet shell 36. The exact interaction of the upper retaining hooks 218a, 218b and the lower retaining hooks 222a, 222b with the helmet shell 36 will be described in more detail later.

[0073] Figure 6a The vibration module 16 is further shown on the lower side of the frame 220 between the two lower retaining hooks 222a and 222b. In this position, the vibration module 16 can be fixed in a detachable manner or is an integral part of the frame 220 of the mounting device 214. The dimensions of the height / thickness of the vibration module 16 are designed such that when the mounting device 214 is fastened to the helmet shell 36, the vibration module 16 presses against or abuts flush with the helmet shell 36 of the protective helmet 30. In this way, the structure-borne noise generated by the vibration module 16 can be efficiently transmitted to the helmet shell 36. Thereby, the helmet shell 36 acts like a resonance amplifier, enabling the user of the protective helmet 30 to well perceive the vibration. This is especially applicable even when the user is wearing Figure 9 the hearing protection device indicated, because the structure-borne noise generated by the vibration module 16 can be perceived as a tactile signal under the helmet shell 36.

[0074] Figure 6a The special design of the mounting device 214 described in to 6h is used to ensure the safety of the user of the protective helmet. Therefore, by providing the upper retaining hooks 218a, 218b and the lower retaining hooks 222a, 222b, a fixed positioning of the mounting device 214 on the helmet shell 36 is achieved, which remains easily detachable if this should be necessary. An object (such as a tree branch) hitting the protective helmet 30 from above can slide down along the protective helmet 30, and during this process, if it gets stuck with the mounting device 214, the mounting device 214 is released from the protective helmet 30 without tearing the protective helmet 30 off the head of the user wearing the protective helmet 30 and without subjecting the user to the full impact force of the hitting object.

[0075] The orientation of the open hook sides of the upper retaining hooks 218a, 218b in the direction of the open hook sides of the lower retaining hooks 222a, 222b ensures that in the case of an object hitting the protective helmet 30 from above and hitting the mounting device 214, a release force is generated which first loads the closing sides of the upper retaining claws 218a, 218b such that they can break under the impact force and thus initiate the release of the mounting device 214 from the helmet shell 36. At the same time, the lower retaining claws 222a, 222b are pushed downwards by the helmet shell 36 along their opening direction, so that the mounting device 214 is completely released from the helmet shell 36. Since the open hook sides of the upper retaining hooks 218a, 218b are larger than the open hook sides of the lower retaining hooks 222a, 222b, as shown in the figure, the mounting device 214 can be easily fastened to the helmet shell 36 because the bending of the upper retaining hooks 218a, 218b during the fastening process requires a relatively small force. At the same time, with this configuration, the force required to break the upper retaining hooks 218a, 218b remains relatively small, such that the release of the mounting device 214 also occurs simply and easily in an emergency situation (i.e., in the case of an object hitting the protective helmet 30 from above).

[0076] The mounting device 214 includes on its lower side a metallic conductive contact 22, as can be seen for example in Figure 6c and Figure 6d which enables electrical contact with a vibration module 16 which can be fixed in this position. Thereby, the vibration module 16 slides on the lower side of the frame 220 in the direction of the lower retaining hooks 222a and 222b and engages there in a defined final position. In particular, the two lower retaining hooks 222a and 222b can support this vibration module 16 by means of, for example, correspondingly designed clamping ribs in the frame 220. Additionally, the contact 22 can also be implemented as a magnet and fix the vibration module 16 in the intended final position. The contact 22 generally only provides a simple contact via the frame 220 and thus connects the vibration module 16 to the associated electrical connection on the battery body 194. Correspondingly, the contact 22 is also visible on the inner side of the frame 220, as for example in Figure 6b

[0077] Figure 7 and Figure 8 each show a three-dimensional view of the vibration module 16. The correspondingly represented vibration module 16 is formed as a vibration module 16 which can be fastened to the mounting device 214 or to the battery body 194. For this purpose, it can be fastened to Figure 7 ​The vibration module 16 of the battery body 194 shown in [Figure] is formed to be substantially cylindrical, wherein the basic surface of the vibration module 16 is formed to be rectangular, particularly square, and has "cut-off" corners. The portions of the lateral surface of the cylinder connecting the "cut-off" corners form the support surface 20. The support surface 20 rests on the outer side of the helmet shell 36 to transmit the noise conducted in the generated structure to the protective helmet 30 when the battery body 100 is equipped with the vibration module 16. At the same time, the "edge" of the lateral surface opposite to the support surface 20 is flush in the recess 26 on the battery body 194. In addition, the contacts 22 for electrically connecting the vibration module 16 to the battery pack 100 are provided on the two basic surfaces of the vibration module 16. In a similar manner, Figure 8 the vibration module 16 shown in [Figure] is substantially formed as a cuboid to allow the vibration module 16 to be fixedly mounted on the mounting device 214 in a releasable manner. However, the contacts 22 provided there are not arranged on the "end faces", but on a part of the lateral surface connecting these end faces. In Figure 7 the vibration module 16 shown in [Figure] and Figure 8 the vibration module 16 shown in [Figure], the contacts 22 can both be formed as magnets to support or achieve fixation on the battery body 194 or on the mounting device 214.

[0078] The protective helmet 30 particularly formed for use in forestry is shown in a side view in Figure 9 [Figure], partly shown in section. Thus, in particular, the inner side of the helmet shell 36 is visible. The protective helmet 30 includes a face protection device ( Figure 9 not shown in [Figure]) and a hearing protection device 34. In addition, the protective helmet 30 includes a helmet shell 36 and an internal fitting assembly (not mentioned in more detail), which includes a support cage 42, a headband 44, and a neckband. The neckband is equipped with a tensioning unit. The helmet shell 36 is externally provided with ventilation sliders 50 through which the openings formed in the helmet shell 36 can be opened and closed. At the same time, the openings help to fix the mounting device 214 on the helmet shell 36 by means of the upper retaining hooks 218a and 218b protruding into the openings 50 and engaging there. At the same time, the lower retaining hooks 222a and 222b include the lower edge of the helmet shell 36, so that the mounting device 214 fixes the battery pack 100 at the indicated position in the area of the user's rear head on the helmet shell 36.

[0079] Three support arms formed as spacers serve as means for fastening the internal fittings or the internal fitting assembly to the helmet shell 36 at three points, wherein in Figure 9Only the rear support arm is expected to be within the protective helmet 30. In order to lock this support arm, which extends in the longitudinal direction of the helmet shell 36, to the helmet shell 36, a slot is provided in the rear head region of the helmet shell 36, in which a free end of the support arm, having a corresponding shape pointing in the longitudinal direction, can be releasably engaged on the helmet shell 36. The dimensions and arrangement of the helmet shell 36 and the support arm are designed (i.e., so long in dimension and so wide in its net width) such that a free space exists between the internal accessory assembly 40 and the helmet shell 36 for receiving the helmet light 10, associated wiring, the ear protection bladder 35a of the hearing protection device 34, and other helmet accessories, as well as at least the fastening means 84a and 80a for facial protection and the hearing protection device 34. Other helmet accessories include the tensioning unit of the neck strap already mentioned. In Figure 9 In this case, the connection cable 24 is laid, as an example, within the helmet shell 36 and exits the helmet shell 36 directly beneath the battery pack 100 in order to electrically connect the helmet light 10 to the battery pack 100.

[0080] Figure 10 A flow chart of a method 300 for operating a helmet accessory system is shown. The method begins with receiving 310 a communication signal at the supply and communication terminal 14 of the battery pack 100. For example, the communication signal may be an information signal that a mobile phone connected to the battery pack 100 is receiving a call. Based on the received communication signal, the vibration module 16 can then be driven in a subsequent step by the control unit. This means that, that is to say, the vibration module 16 serves as an additional alarm unit or a ringing or vibrating unit of the connected mobile phone. This is advantageous since, in this way, the user of the protective helmet 30 can be notified in a reliable and tactile manner. This is particularly so that the user can be notified even when the user is using the hearing protection device 34 integrated in the protective helmet 30. It should be noted that when the user is using the protective helmet 30, the actual alarm, acoustic alarm, and vibration alarm of the mobile phone can often be received poorly. Thus, the acoustic signal is suppressed by the hearing protection device 34, and due to the (buffered) protective clothing, the vibration alarm of the mobile phone can also usually be received poorly. On the other hand, the vibration caused by the vibration module 16 is directly transmitted to the user's head via the helmet shell 36, thus giving an increased perceptibility of the vibration of the vibration module 16 (compared to the vibration alarm of the mobile phone).

[0081] In addition, the vibration module 16 can also be driven to signal other events. For this purpose, it is only required that the communication signal provided for enabling the vibration module 16 be sent to and received by the supply and communication terminal 14 of the battery pack 100. For example, the vibration module 16 can generally be used as a "ringer" through a mobile phone connected to the battery pack 100, and this "ringer" is always driven when the mobile phone emits an acoustic or tactile signal due to different events. For example, it can signal tactilely a notification received by the mobile phone or a low battery state of the mobile phone. Thus, different events can trigger different vibration modes of the vibration module 16. Correspondingly, the vibration modes can vary depending on the events and identify them in a unique way. The helmet light 10 can also send a communication signal to the supply and communication terminal 14 of the battery pack 10 to enable the vibration module 16. This can indicate, for example, a (pending) change in the operating mode of the helmet light 10. A vibration signal can also be triggered through the vibration module 16 due to a dangerous situation identified by the sensor unit of the helmet light 10 or the battery pack 100. The charging or discharging state of the battery pack 100 can also be communicated tactilely through the vibration module 16 itself.

[0082] To support the user's perception of the vibration module 16, a change in the light cone emitted by the helmet light 10 can be envisioned and additionally provided. For example, the brightness or diameter of one or more of the light cones or at least some of the light cones generated by the helmet light 10 can be synchronized with or vary with the emitted vibration signal. In particular, the emitted brightness / light color can increase and decrease or change periodically.

[0083] The features of the present invention disclosed in the above description, the drawings, and the claims, whether individually or in any combination, can be crucial for implementing the present invention.

[0084] List of reference numerals

[0085] 10 Helmet light

[0086] 12 Battery module

[0087] 14 Supply and communication terminal

[0088] 16 Vibration module

[0089] 18 Holding device

[0090] 20 Support surface

[0091] 22 Contact

[0092] 26 Recess

[0093] 24 Connecting cable

[0094] 30 Protective helmet

[0095] 34 Hearing protection device

[0096] 35a Hearing protection bladder

[0097] 36 Helmet shell

[0098] 44 Headband

[0099] 50 Ventilation slider

[0100] 84a Fastening device

[0101] 80 Fastening device

[0102] 100 Battery pack

[0103] 102 Display and operation element

[0104] 190 Charging plug

[0105] 192 Connector plug

[0106] 194 Battery body

[0107] 196 Sealing lip

[0108] 196a Collar

[0109] 198 Charging contact

[0110] 200 Communication contact

[0111] 202 Communication contact

[0112] 204 Magnet

[0113] 206 Charging contact

[0114] 208 Sealing lip

[0115] 208a Collar

[0116] 210 Lateral stop lug

[0117] 212 Stop lug

[0118] 214 Mounting device

[0119] 216a Upper retaining arm

[0120] 216b Upper retaining arm

[0121] 218a Upper retaining hook

[0122] 218b Upper retaining hook

[0123] 220 Frame

[0124] 222a Lower retaining hook

[0125] Lower retaining hook 222b

[0126] Step 223

[0127] Tab 224

[0128] Method 300

[0129] Receiving 310

[0130] Driving 320

[0131] Magnet 1104a

[0132] Magnet 1104b

[0133] PCB 1106a

[0134] PCB 1106b

[0135] PCB 1106c

[0136] PCB 1106d

[0137] Electrical contact 1108a

[0138] Electrical contact 1108b

[0139] Casting composition 1110a

[0140] Casting composition 1110b

[0141] Electrical contact surface 1112a

[0142] Electrical contact surface 1112b

[0143] Electrical contact surface 1112c

[0144] Recess 1114a

[0145] Recess 1114b

[0146] Projection 1116a

[0147] Projection 1116b

[0148] Battery cell 1118

[0149] Foil cover 1120

[0150] Cover 1122

[0151] End face 1124

[0152] Temperature display 2000

[0153] Battery charge level display 2002

[0154] On / Off button 2004

[0155] 2006 LED backlight

[0156] 2008 display area

Claims

1. A battery pack (100) for fastening to a protective helmet (30) and for energy supply of a helmet accessory, comprising: - a battery module (12) for storing and outputting electrical energy; - a supply and communication terminal (14) for energy supply of a helmet accessory capable of being coupled to the battery pack (100), and for communication; - a mounting device (214) for fastening the battery pack (100) to the protective helmet (30); - a vibration module (16) for generating structure-borne noise; - a control unit for controlling the functions of the battery pack (100), including the function of the vibration module (16); - wherein the control unit is adapted to drive the vibration module (16) based on a communication signal received at the supply and communication terminal (14).

2. The battery pack (100) according to claim 1, wherein, The vibration module (16) is integrated in the battery body (194) or is integrally formed with the mounting device (214).

3. The battery pack (100) according to claim 1, wherein, The vibration module (16) is detachably fastened to the battery body (194) or is detachably fastened to the mounting device (214).

4. The battery pack (100) according to claim 3, wherein, The vibration module (16) includes a holding device (18) for fixing the vibration module (16) to the battery pack (194) or to the mounting device (214).

5. The battery pack (100) according to claim 4, wherein, The holding device (18) is adapted to magnetically and / or mechanically fix the vibration module (16).

6. The battery pack (100) according to any one of claims 3-5, wherein, The electrical connection between the battery pack (100) and the vibration module (16) is formed by the holding device (18).

7. The battery pack (100) according to any one of the preceding claims, wherein, The vibration module (16) includes a support surface (20) which, when the battery pack (100) is fastened to the protective helmet (30) by the mounting device (214), supports against the helmet shell (36) of the protective helmet (30).

8. The battery pack (100) according to any one of the preceding claims, characterized in that, The battery pack (100) includes at least one sensor unit for detecting the operating state of the battery pack (100), and the control unit is adapted to drive the vibration module (16) based on the detected operating state.

9. The battery pack (100) according to any one of the preceding claims, wherein, The control unit is configured to drive the helmet accessory synchronously with the vibration module (16).

10. A helmet accessory system comprising a battery pack (100) according to any one of claims 1-9 and a helmet accessory, in particular a helmet light (10), wherein, The battery pack (100) and the helmet accessory can be fastened or fixed to the helmet shell (36) of the protective helmet (30).

11. A protective helmet system, comprising a protective helmet (30) and a helmet accessory system according to claim 10.

12. A method for operating a helmet attachment system according to claim 10, wherein, The method (300) comprises: receiving (310) a communication signal at the supply and communication terminal (14) of the battery pack (100), and driving (320) the vibration module (16) by the control unit based on the received communication signal.

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