Portable lighting device

Abstract

In a first aspect, the invention relates to a lighting device that can be attached to an everyday object. The lighting device comprises a lighting unit, a mounting unit, a hinged component, and a resistor component, wherein radiation can be emitted from the lighting unit. The hinged component is connected to the mounting unit, and the lighting unit is attached to the hinged component. The hinged component can be folded up to 180°. To limit the folding motion of the hinged component, the resistor component is connected to it. In a further aspect, the invention relates to a system comprising a lighting device and an everyday object, wherein the lighting device is attached to the everyday object.

Description

[0001] The invention belongs to the technological field of lighting devices.

[0002] In a first aspect, the invention relates to a lighting device that can be attached to a consumer item. The lighting device comprises a lighting unit, a fastening unit, a folding component, and a resistance component, wherein radiation can be emitted from the lighting unit. The folding component is connected to the fastening unit, and the lighting unit is attached to the folding component. The folding component can be folded up to 180°. To limit the folding capability of the folding component, the resistance component is connected to the folding component.

[0003] In a further aspect, the invention relates to a system comprising a lighting device and a consumer article, wherein the lighting device is attached to the consumer article. Background and state of the art

[0004] Lighting devices have been around for a long time and include technical developments geared towards the generation of artificial light. Lighting devices, such as simple lamps, have become indispensable in everyday situations. Lighting devices are installed practically everywhere where sufficient visibility is desired when natural light can no longer provide it.

[0005] It is also known to attach lighting devices to a body part or a piece of clothing of a user so that the user can perform an application-related activity with the best possible illumination. For example, the prior art includes numerous proposals for headlamps that can be attached to a user's head. Headlamps often include a ring-shaped headband that extends from the forehead over the temples to the back of the head. Headlamps can be worn, for example, by joggers, but also by miners and / or doctors during surgery.

[0006] Also known in the prior art are lighting devices attached to a user's shoes. This can be particularly relevant (not limited to) for joggers, but also for climbers and / or miners.

[0007] DE 202018005081 U1 discloses such a lighting device or shoe lighting system. The shoe lighting system disclosed therein consists of two shoe lights configured to be attached to, on, under, or between the laces of a shoe. Furthermore, each shoe light has a housing, which in turn has a plurality of LEDs. The LEDs emit their light forward, as seen from the shoe. The shoe lighting system has a rechargeable power source for operating the LEDs.

[0008] A lighting device for a shoe is also disclosed in US 9863631 B1. The lighting device disclosed therein comprises a housing with a plurality of LEDs incorporated in a curved section of the housing. Furthermore, the lighting device comprises a pivotable fastening element that can be attached to a shoelace. A rechargeable power source is also provided to enable operation of the LEDs.

[0009] Although the prior art already provides several options for application-specific lighting devices, some disadvantages still exist. For example, it has proven difficult to achieve customized application suitability for various consumer goods. Another known disadvantage of the prior art is that the light emitted by the device changes its beam angle depending on the load. This can impair visibility and even pose a safety-critical aspect. Therefore, there is a need in the prior art to optimize the design of lighting devices that are to be attached to a consumer goods object. Object of the invention

[0010] The object of the invention is to provide an alternative lighting device which can be attached to a consumer article and which can eliminate the disadvantages of the prior art. Summary of the invention

[0011] The object of the invention is achieved by the independent claims. Advantageous embodiments are disclosed in the dependent claims.

[0012] In a first aspect, the invention relates to a lighting device which can be fastened to a consumer article, comprising a lighting unit, a fastening unit and a folding component, wherein radiation can be emitted in an emission direction from the lighting unit, wherein the folding component is connected to the fastening unit and the lighting unit is attached to the folding component, wherein the folding component can be folded up to 180°, preferably up to 90°, relative to an initial emission direction, wherein the folding component is connected to a resistance component for restricting a folding capability of the folding component.

[0013] The lighting device according to the invention has proven to be particularly advantageous in a number of aspects, which will be described in more detail below.

[0014] It is a great advantage to use a folding component with a folding capability that allows it to be folded by 180° relative to the initial emission direction. The initial emission direction refers to a direction in which the light is emitted when the folding component is in a folded state. The folded state preferably corresponds to a state of the folding component in which the light is emitted from the lighting unit parallel to the initial emission direction. This means, in particular, that the light has an angle of 0° relative to the initial emission direction. In other words, the emission direction and the initial emission direction of the light are then identical. Since the folding component can be folded up to 180° relative to the initial emission direction, there is advantageously a flexible option for determining the actual emission direction.This also allows for a high degree of flexibility in the potential application of the lighting device. It is conceivable, for example, that the lighting device could be used as a shoe light or shoe lamp. When used as a shoe lamp, it is preferable that the folding component is not folded at all and that the folding component is folded slightly. The lighting device can also be used as a headlamp or head lamp, where the folding component is preferably folded to achieve the desired illumination. Folding from 0 to 180° is possible through the folding mechanism.

[0015] A further advantage of the lighting device, achieved in particular by the resistance component, is that it ensures that the emission direction of the radiation emanating from the lighting unit is maintained for a long time. In particular, a desired angle for the emission direction or for the adjustment of the lighting unit can be advantageously set and maintained, which remains essentially unchanged even when the lighting device is subjected to mechanical stress. For example, it is possible to use the lighting device while jogging or climbing, particularly as a shoe lamp. The mechanical stresses during such a process do not alter the set angle, which was regulated by the folding component and fixed by the resistance component.This advantageously allows a constant beam angle to be maintained, thus preventing or minimizing scattering losses of the emitted radiation.

[0016] A further advantage is that the risk of potentially hazardous situations occurring is reduced or avoided. Consequently, the lighting device according to the invention significantly improves the safety factor for a user, as sufficiently reliable visibility can be ensured, which is particularly the case when, in addition to the desired brightness, a fixed beam angle can be set that can also withstand stresses such as vibrations.

[0017] The extended folding angle of up to 180° allows for more flexible alignment of the light beam from the lighting unit. The increased folding capability significantly increases the versatility of applications. This allows the user to flexibly adjust the lighting direction regardless of the position of the mount.

[0018] The device according to the invention comprises, as structural components, in particular, a lighting unit, a fastening unit, a folding component, and a resistance component. Optionally, further components may also be present, which will be explained in more detail later in this description.

[0019] The lighting unit refers to the component of the lighting device designed to emit radiation. In particular, the radiation or light from the lighting unit fulfills the purpose of providing sufficient brightness to enable a user to perform an action related to the application when natural light, e.g., sunlight, is insufficient. The lighting unit is attached, in particular, to the folding component.

[0020] The folding component refers to a component of the lighting device that can be folded. In particular, the folding component can be folded by up to 180°, in particular in the vertical direction. In other words, the folding component in particular comprises a folding mechanism. For this purpose, the folding component can, for example, comprise a frame that has a foldable section. It can also be preferred for the folding component to comprise a component that is designed, for example, like a plate and is foldable. The folding component can, in particular, comprise two states, as already outlined above. An initial state exists when the folding component is not folded. The emission direction of the light or radiation emanating from the lighting unit is then essentially parallel to the initial emission direction.In other words, when the folding component is not folded, the light emission direction corresponds to the initial emission direction. The initial emission direction for the light is achieved in particular when the folding component is folded at 0°.

[0021] The folding component is particularly preferably foldable within an angular range of up to 180°. The angular range particularly relates to an angular range extending in a vertical direction starting from the initial emission direction. It may also be preferred for the folding component to be deflectable along a horizontal direction. The above-mentioned two states of the folding component particularly relate to an angle of 0° and an angle of 180°. Folding the folding component within the range of 0° - 180° is preferably also possible, so that the angle can have any value between 0° - 180°. In preferred embodiments, the angle can have a value of 0° - 10°, 10° - 20°, 20° - 30°, 30° - 40°, 40° - 50°, 50° - 60°, 60° - 70°, 70° - 80°, 80° - 90°, 90° - 100°, 100° - 110°, 110° - 120°, 120° - 130°, 130° - 140°, 140° - 150°, 150° - 160°, 160° - 170° or 170° - 180°.The average person skilled in the art will recognize that the preferred range limits for the angle can also be combined with one another, for example, 0° - 50°, 30° - 70°, 40° - 80°, or 130° - 160°. In particular, the folding capability of the folding component advantageously allows for flexible adjustment of the angle, especially the beam angle, and thus a versatile field of application.

[0022] The resistance component preferably refers to a component that provides mechanical resistance to fold the folding component. In other words, the resistance component can achieve behavior that restricts the range of movement or the folding option. This advantageously ensures that undesired folding of the folding component does not occur, particularly when using the lighting device, for example during sporting activities, where mechanical stresses inevitably occur. Furthermore, the resistance component makes it possible to fix the desired beam angle and thus enable the long-term stable emission of light at a constant beam angle. The resistance component can, for example, be in the form of a spring attached to the folding component.It may also be preferred, for example, for the folding component to comprise a front side and a back side. The lighting unit would preferably be attached to the front side. The back side of the folding component is then preferably attached to the fastening unit. It may be preferred here for the resistance component, for example as a spring (without being limited to this example), to be attached to the back side, in particular between the back side and the fastening unit. A part of the resistance component can also preferably be incorporated as one or more detents of a housing (see . Fig. 9 ).

[0023] The fastening unit preferably forms a support for the folding component, on which in turn the lighting unit is preferably mounted. The fastening unit can preferably be designed to be substantially flat or have curvatures. In particular, the fastening unit can preferably be in the form of a circuit carrier. The circuit carrier refers in particular to a carrier that has electrical lines, such as plated-through holes, plug connections, conductor tracks, and / or conductor track strips, in particular in order to enable electrical contact in addition to the mechanical support. This can advantageously ensure a current flow and thus also achieve long-lasting illumination by the lighting unit.

[0024] In a further preferred embodiment, the folding component is connected to the fastening unit via a rotary connection.

[0025] A rotary joint preferably comprises a connection in which a non-positive and / or positive connection is enabled via a rotatable mechanism. The rotatable mechanism specifically means that a connecting element and / or the folding component and / or the fastening unit must be screwed in to maintain the connection. Thus, a rotary joint can be present, for example, as a screw connection, without being limited to this example.

[0026] For the context of the invention, a preferred rotary connection between the folding component and the fastening unit has proven particularly advantageous in two respects. This advantageously results in significantly simplified handling for adjusting the connection between the folding component and the fastening unit. Therefore, no great effort is required for this; instead, a simple and quick connection can be created. It is also advantageous that the rotary connection has proven particularly robust, ensuring a permanent connection between the folding component and the fastening unit. Accordingly, a preferred rotary connection for the lighting device has proven particularly useful for achieving a holistic optimization of the lighting device.

[0027] In a further preferred embodiment, the lighting device comprises an adapter via which the folding component is connected to the fastening unit, wherein the adapter comprises at least two, preferably three, particularly preferably four, projections for a rotary connection.

[0028] In particular, the adapter provides a twist-to-lock mechanism for the connection between the mounting unit and the folding component. This advantageously enables a particularly reliable connection that can also be easily released.

[0029] Preferably, the projections are arranged symmetrically. Symmetrical can mean that several projections are equally spaced from one another. In a symmetrical arrangement, it may be preferred that the projections are arranged along a circular shape. It may also be preferred that the projections be arranged asymmetrically.

[0030] In preferred embodiments, the projections can be formed from a ferromagnetic material. This allows for advantageous pre-positioning in a magnetic guide.

[0031] Particularly preferred are (at least two or three or) four projections. A symmetrical arrangement of four projections advantageously enables four different mounting positions and ensures needs-based assembly.

[0032] Furthermore, a symmetrical arrangement of the projections offers optimal user guidance and increases the degrees of freedom of installation options.

[0033] Using four protrusions has been found to achieve a more even distribution of forces and increased stability, which is particularly beneficial for connecting the folding component to the mounting unit. The use of four protrusions increases the strength of the mechanism, making it particularly robust and suitable for heavy-duty use. This allows a long-lasting connection to be maintained, even despite strong vibrations.

[0034] The folding component preferably includes the adapter. This advantageously achieves a greater degree of compactness, since a separate component for providing the adapter is not required.

[0035] Preferably, the folding component has a rotation angle of up to 90°, preferably of 45°-70°, for fastening the folding component to the fastening unit.

[0036] These angles have proven advantageous in reducing mounting effort and improving ergonomics. These rotation angles allow for quick and effortless mounting, which is particularly beneficial in situations where the lighting unit is frequently attached and removed. They also increase the number of mounting options, as less space is required for installation.

[0037] In a further preferred embodiment, the fastening unit comprises webs, preferably in the same number as the number of projections, so that the webs and the projections provide a detachable connection between the folding component and the fastening unit via a rotational movement. With two projections, two webs are preferably present. With three projections, three webs are preferably present. With four projections, four webs are preferably present.

[0038] The webs and projections preferably interact with each other in such a way that a mechanical locking is enabled by a relative rotation of the folding component and the fastening unit. In other words, a locking position can be achieved by a rotational movement from an attachment position.

[0039] For example, it may be preferred that the fastening unit comprises four circularly arranged webs, each of which preferably has a notch in the center of its outer wall in order to additionally mechanically secure the folding component with the spring mechanism in the locking position.

[0040] The preferably four circularly arranged webs, whose center of the individual distances to each other is preferably always at 45 degrees, 135 degrees, 225 degrees and 315 degrees, offer a reliable bond with the notches.

[0041] In a further preferred embodiment, the lighting device has at least one magnet which is present on the fastening unit and / or the fastening unit comprises a magnetic material, wherein preferably the magnet and / or the magnetic material comprises a ferromagnetic material.

[0042] It may also be preferred for the fastening unit (e.g., a clip) and folding component of the lighting device to each have one or more magnets. The folding component and the fastening unit are preferably considered to be matched counterparts that are connected to one another. Preferably, the same number of magnets is present on the fastening unit and the folding component. Particularly preferably, four magnets are attached to the folding component and four magnets to the folding component. A corresponding number of magnets can also be used, e.g., three magnets each on the folding component and fastening unit, two magnets each on the folding component and fastening unit, etc.

[0043] This advantageously provides a magnetic guide, which advantageously facilitates positioning of the lighting unit. The magnetic guide significantly simplifies and speeds up handling, which is particularly useful in poor visibility conditions or in hectic situations.

[0044] In addition to improving handling during pre-positioning in the plug-in position, the magnets help prevent the lighting unit from jumping out of the locked or plug-in position in the unlikely event of external forces such as impacts or blows. Should the lighting unit be released from the locked position due to such external influences, the magnets (e.g., neodymium magnets) on both counterparts ensure safe return to the plug-in position. At four locations – a total of eight magnets – the magnets hold the lighting device with a force many times greater than its own weight. Thus, even in extreme cases, the magnetic locking mechanism also serves as a protective mechanism, preventing the folding component from falling out of the device.

[0045] Preferably, there is an equal number of magnets as there is a number of projections, wherein in particular the magnets are integrated in the fastening unit.

[0046] The magnets help the user intuitively position the lighting unit in the correct starting position (attachment position) before the mechanical rotation takes over the final attachment. This significantly simplifies handling of the lighting unit.

[0047] In a further preferred embodiment, the folding component has an additional closure, preferably comprising a spring.

[0048] In the context of the invention, this can also be referred to as a snap mechanism or spring mechanism. In other words, the folding component can preferably be additionally equipped with a spring mechanism that secures the attachment in the locked position after the rotational movement. The snap mechanism provides additional locking and prevents accidental release. Advantageously, the snap closure offers an additional layer of security beyond the conventional rotational movement. The mechanism clicks into place audibly and tactilely, providing the user with feedback that the lighting unit is correctly attached. This significantly improves the reliability of the lighting device's functionality.

[0049] In a further preferred embodiment, the lighting device has a drive, a sensor and a computing unit, wherein the lighting unit, the sensor and the computing unit are data-connected to one another, wherein the computing unit is configured to fold the folding component on the basis of a measured value of the sensor via the drive.

[0050] A drive preferably refers to a component by which a movement, in particular a folding of the folding component, can be performed. The terms "drive" and "gear" can be used synonymously here and are intended to clarify that they refer to a mechanical structure that can effect automatic folding of the folding component. For folding along an angle in a preferably vertical direction, a drive that executes a rotary movement is preferably used. It may also be preferred to use a drive that can execute a translational movement.

[0051] A data connection means, in particular, that data exchange is possible, especially between the components that are preferably connected to a data connection, i.e., preferably between the sensor, the lighting unit, and the sensor. Data exchange can be enabled, for example, via electrical current through appropriate electrical connections or via electromagnetic waves, e.g., for a Bluetooth connection.

[0052] The sensor refers to a sensor that can detect environmental parameters or influences on the lighting device. The sensor can be a gyroscope or a brightness sensor, for example. Depending on the type of influence, this can advantageously achieve automatic adjustment of the beam angle to optimize the illumination achieved by the lighting device. The sensor can also preferably be a distance sensor.

[0053] For this purpose, it may be preferred that the computing unit carries out computing operations to determine an optimal position for the folding component in order to achieve a desired beam angle in order to transmit a corresponding application for the drive on the basis of a determined parameter of the sensor, which can then carry out the folding of the folding component.

[0054] A computing unit in the sense of the invention preferably refers to a data processing unit, which preferably comprises an integrated circuit (IC), an application-specific integrated circuit (ASIC), a programmable logic circuit (PLD), a field programmable gate array (FPGA), a microprocessor, a microcomputer, a programmable logic controller and / or another electronic, preferably programmable, circuit. Preferably, software is installed on the computing unit, which is configured or comprises commands to determine an optimized beam angle and / or an optimal position for the folding component, wherein a corresponding calculation for setting an angle for the folding angle is preferably carried out for this purpose.

[0055] In a further preferred embodiment, the lighting device comprises a computing unit and a gyroscope for detecting changes in movement, wherein the computing unit, the gyroscope and the lighting unit are data-connected to one another and the computing unit is configured to specify a luminous intensity for the radiation of the lighting unit on the basis of a measured value detected by the gyroscope.

[0056] A gyroscope preferably refers to a device with which a rotational movement can be measured. The gyroscope can also preferably be a MEMS gyroscope (MEMS stands for microelectromechanical system), which is used in particular to measure angular velocity.

[0057] The described preferred embodiment is particularly advantageous with regard to use of the lighting device in situations where mechanical stress may occur, in particular during sports, e.g., while jogging. This allows, in particular, the luminous intensity of the lighting unit to be regulated depending on the stress, which can be measured by the gyroscope. Thus, it is conceivable that while jogging, the lighting unit emits light at a higher luminous intensity to improve the user's visibility and sense of safety. During inactivity, for example, when the user has finished jogging, the luminous intensity can be regulated in accordance with the inactivity detected by the gyroscope, for example, with regard to a reduced luminous intensity.

[0058] In a further preferred embodiment, the lighting device comprises a computing unit and a brightness sensor for detecting ambient light, wherein the computing unit, the brightness sensor and the lighting unit are data-connected to one another and the computing unit is configured to specify a luminous intensity for the radiation of the lighting unit on the basis of the ambient light detected by the brightness sensor.

[0059] Advantageously, the lighting device can be optimized based on the ambient light. This advantageously makes the application spectrum of the lighting device more efficient. Thus, it is possible to set a low luminosity on the lighting unit based on the brightness sensor if the sensor detects a high luminosity in the environment, for example, due to natural light. It is also advantageously possible to increase the luminosity on the lighting unit if, for example, the ambient luminosity is insufficient to provide adequate illumination. In particular, this also improves the safety factor through the use of the lighting device, since it enables use regardless of the time of day.

[0060] In a further preferred embodiment of the lighting device, the brightness sensor comprises a photoresistor which changes its resistance as a function of the ambient light, wherein the computing unit is configured to process a change in the resistance for specifying the luminous intensity of the radiation of the lighting unit.

[0061] A photoresistor is a light-sensitive electrical resistor. The more light falls on the photoresistor, the lower its resistance becomes. The less light hits the photoresistor, the higher its resistance. Using a photoresistor for a brightness sensor to adjust the luminosity of the lighting unit based on a measurement of the ambient light by the brightness sensor represents an effective design to make this possible. A brightness sensor preferably refers to a sensor that serves to detect brightness, in particular the brightness of the environment that is to be illuminated by the lighting device.

[0062] In a further preferred embodiment, the lighting device comprises a gyroscope for detecting changes in movement, preferably vertical changes in movement, and a computing unit, wherein the computing unit is configured to position the lighting unit on the basis of the detection of changes in movement such that radiation with a substantially constant radiation angle can be emitted from the lighting unit.

[0063] This advantageously allows the beam angle to be varied, allowing a set beam angle to be maintained permanently throughout the use of the lighting device. This ensures long-lasting illumination and thus reliable visibility. The lighting device is not limited to a fixed beam angle. A higher beam angle can provide safe general lighting. A lower beam angle can provide better illumination for a specific area of ​​the environment.

[0064] In a further preferred embodiment, the lighting device comprises a computing unit and a distance sensor for measuring distances, wherein the computing unit, the distance sensor and the lighting unit are data-connected to one another and the computing unit is configured to specify a luminous intensity for the radiation of the lighting unit on the basis of the distance detected by the distance sensor.

[0065] Advantageously, in particular, the combination comprising a computing unit and a distance sensor allows the luminous intensity to be regulated based on the measured distance to objects in the relative vicinity. This allows for automatic adjustment of the luminous intensity when people and / or objects approach the distance sensor. This advantageously avoids the need to manually adjust the luminous intensity of the lighting unit. In particular, it eliminates the need to bend down to adjust the luminous intensity. This is particularly difficult for people with physical limitations, for example due to age, illness, and / or injury. Instead, the luminous intensity can be optimized automatically without the user having to actively intervene.

[0066] Preferably, the distance sensor is contactless. This means that distances can be measured without physical contact. This advantageously increases the practicality of the distance sensor used.

[0067] In a further preferred embodiment, the lighting device comprises a bearing. In a further preferred embodiment, the lighting unit can be positioned via a bearing, wherein the lighting unit is connected to the folding component by the bearing.

[0068] A bearing preferably refers to a component that enables a rotational or linear movement, in the context of the invention in particular for positioning the lighting unit on the folding component. In addition to the folding component, the bearing advantageously provides a further component with which the direction of the illumination by the lighting unit can be adjusted. Advantageously, the use of a bearing for the connection on the folding component can also minimize or eliminate the adverse effect of friction, so that the positioning on the folding component itself can be optimally adjusted. Furthermore, the bearing advantageously also acts as a spring, so that even when the lighting device is subjected to stress, forces can be dampened and the usability and / or fixation of the lighting unit can be ensured.

[0069] In a further preferred embodiment, the lighting device comprises a drive. In a further preferred embodiment, the lighting unit is connected to a drive for determining the emission direction of the radiation for a radiation angle that is preferably maintained constant.

[0070] As stated above, the emission direction of the radiation emanating from the lighting unit is advantageously adjusted by a drive, particularly with regard to the positioning of the light cone emanating from the lighting unit. By preferably maintaining a constant beam angle, sufficient illumination can be advantageously provided to ensure the long-term and application-oriented use of the lighting device.

[0071] In a further preferred embodiment, the lighting unit is connected to a heat sink, wherein the heat sink preferably comprises a material selected from a group comprising aluminum, silver, copper and / or graphene, wherein the heat sink preferably comprises carbon nanotubes.

[0072] The heat sink advantageously eliminates or minimizes the risk of overheating that can result from heat-producing components of the lighting device, in particular the lighting unit. The heat sink also has a beneficial effect on the operation of other optional components of the lighting device that are involved in a current flow for operating the lighting unit. Thus, the long-term operational suitability of the lighting device is ensured by ensuring sustained emission of light emanating from the lighting unit. The aforementioned preferred materials for the heat sink have proven advantageous in that they can be implemented easily and cost-effectively in or on the lighting device using proven means in the prior art.

[0073] In a further preferred embodiment, the lighting unit comprises a front lighting unit which is incorporated in a housing, wherein optionally one or more side lighting units and / or back lighting units are incorporated in the housing.

[0074] The front lighting unit refers to a component of the lighting unit which serves to generate artificial light and is intended to emit light in a forward direction. The forward direction denotes the direction which can be determined by a main axis of the light cone, wherein the front lighting unit is preferably attached to a front section of the lighting unit. When the folding components are not folded, i.e. when folded by 0°, the front lighting unit illuminates along the output emission direction. The front lighting unit is preferably incorporated into a housing. The housing preferably refers to a rigid shell which serves in particular to protect and encapsulate the front lighting unit. On the one hand, this enables positioning of the front lighting unit.On the other hand, the front lighting unit is provided with reliable protection, so that, in particular, the lighting itself is not disadvantaged. The housing preferably has attachment points so that it can be connected to the folding component. The housing can preferably also comprise one or more at least partially transparent, preferably transparent, areas through which the light from components of the lighting unit, in particular the front lighting unit, can pass.

[0075] Optionally, one or more side lighting units and / or back lighting units can be incorporated into the housing. Analogous to the front lighting unit, the side lighting unit and the back lighting unit refer to components that serve to generate artificial light. In a plan view of the housing, the side lighting unit is preferably positioned laterally to the front lighting unit and is intended to emit light that deviates substantially by 90° from the light emitted by the front lighting unit. In a plan view of the housing, the back lighting unit is preferably positioned opposite the front lighting unit and is intended to emit light that deviates substantially by 180° from the light emitted by the front lighting unit. This advantageously achieves particularly comprehensive illumination of the surroundings, so that visibility is significantly improved.

[0076] In a further preferred embodiment, the lighting device has an energy source for operating the lighting unit, wherein the energy source preferably comprises a rechargeable battery, wherein the rechargeable battery is particularly preferably selected from a group comprising a metal-sulfur rechargeable battery, in particular a lithium-sulfur rechargeable battery and / or graphene rechargeable battery, in particular a graphene-aluminum-ion rechargeable battery.

[0077] The energy source preferably refers to a component that provides an electrical current, allowing the lighting unit to emit light. Accordingly, it is preferred that there be an electrical connection between the energy source and the lighting unit, for example, via one or more wires, conductor tracks, and / or conductor strips. Because the lighting unit itself preferably comprises an energy source, a self-sufficient energy supply for the lighting unit is advantageously possible. In particular, an external energy supply is advantageously not necessary to ensure operation of the lighting unit.

[0078] Against this background, a rechargeable battery has proven to be a particularly advantageous preferred energy source for the inventive context. The rechargeable nature of a rechargeable battery advantageously makes it possible to ensure particularly long-term, stable operation of the lighting unit due to its longevity. Furthermore, rechargeable batteries advantageously have a high current strength, which in turn advantageously translates into higher performance of the lighting unit. The aforementioned preferred rechargeable batteries and their specific embodiment have proven particularly useful for the inventive context. Thus, the preferred rechargeable batteries are cost-effective and can be integrated into the lighting device using technologies established in the prior art, can be purchased inexpensively, and / or have a beneficial impact on environmental and climate aspects.

[0079] In a further preferred embodiment, the lighting device has a USB-C connector system and / or a computing unit, wherein the computing unit preferably comprises a communication unit for the wireless transmission of data.

[0080] By incorporating a USB-C connector system, the relevant technological advances are taken into account, allowing for the increasing use of such connection options. This creates a more compact connection system to enable an electrical connection, particularly for data transmission purposes. In particular, the USB-C connector system can also be used to recharge the preferred power source, which can preferably be a battery. The lighting device can preferably comprise a (conventional) USB connector system in combination with or instead of the USB-C connector system.

[0081] A communication unit, in the sense of the invention, preferably refers to a device for transmitting, in particular for sending and / or receiving, data. Transmission preferably occurs via directed or non-directed electromagnetic waves, whereby the range of the frequency band used can vary from a few hertz (low frequency) to several hundred terahertz depending on the application and technology used. For example, the following data transmission methods can be used: Bluetooth, WLAN, ZigBee, NFC, Wibree, WiMAX, and / or cellular mobile networks such as GSM and UMTS in the radio frequency range, as well as IrDA and optical point-to-point radio (FSO) in the infrared or optical frequency range. Advantageously, the communication unit enables digital data transmission, so that no analog connection is required for data transmission.In a further preferred embodiment, the lighting device has a rotary control, so that the luminous intensity of the lighting unit can be regulated, preferably continuously, by means of the rotary control.

[0082] A rotary control preferably refers to a control component that can be operated by rotation. The rotary control preferably serves to adjust the luminous intensity of the lighting unit, so a corresponding connection to the lighting unit is preferred. This advantageously enables particularly simple operation for a user to adjust the luminous intensity of the lighting unit. The preferably stepless control of the lighting unit advantageously enables continuous transitions between different luminous intensities of the lighting unit.

[0083] In a further preferred embodiment, the lighting device has an optical system for focusing and / or scattering the light emitted by the lighting unit, wherein the optical system preferably comprises one or more reflectors and / or lenses, wherein one or more lenses are preferably in the form of liquid lenses, which are preferably single-phase, two-phase or multi-phase, wherein the liquid lens is preferably selected from a group comprising a mechanical liquid lens and / or an electrical liquid lens.

[0084] Advantageously, by attaching one or more optical components, in particular reflectors and / or lenses, a beam path for the light emitted by the lighting unit can be defined. This advantageously makes the illumination of the surroundings even more efficient.

[0085] A liquid lens preferably refers to a lens formed by one or more liquids. The focal length of the liquid lens can preferably be varied by applying an electrical signal. A single-phase liquid lens is preferably formed by a liquid, preferably in combination with a (transparent) membrane, which can be deformed by applying an electrical signal so that a desired refractive effect can occur. A two-phase liquid lens preferably comprises two liquids that are preferably immiscible, have substantially similar densities, and different refractive indices. By means of an electrical signal, a contact angle between the two liquids can be changed through the effect of electrowetting.This allows a wall of a chamber in which the two liquids are introduced to be changed by a curvature, so that the focal length of the lens can also change.

[0086] The use of one or more liquid lenses advantageously allows for variable refractive power. A higher degree of compactness can also be achieved. Furthermore, in addition to energy-efficient operation, a high degree of vibration stability is also advantageous.

[0087] In a further aspect, the invention relates to a system comprising a lighting device according to the above-described and a consumer article, wherein the lighting device is attached to the consumer article.

[0088] The average person skilled in the art recognizes that explanations, features, definitions and advantages of the lighting device and preferred embodiments of the lighting device also apply to the system according to the invention, and vice versa.

[0089] The system advantageously enables long-lasting, stable and particularly efficient lighting of the environment if natural light is not sufficient.

[0090] In a further preferred embodiment of the system, the article of daily use is selected from a group comprising a shoe, a bag, a headband, pants, a sweater, a helmet, a vest and / or a jacket.

[0091] Advantageously, the lighting device can be mounted in or on a variety of everyday objects. This allows for the establishment of solid ambient lighting from a flexible range of everyday objects.

[0092] In a particularly preferred embodiment, the article of daily use is a shoe. In particular, when the lighting device is attached to a shoe, the advantages can be utilized particularly effectively to enable application-oriented and effective use of the shoe and / or the lighting device.

[0093] In a further preferred embodiment, the illumination unit comprises an LED, infrared LED, LCC (Laser Crystal Ceramics) and / or OLED.

[0094] The LED is preferably designed to emit light visible to humans. The LED can preferably be an RGB LED (R: red, G: yellow, B: blue).

[0095] The aforementioned preferred light sources for the lighting unit can advantageously be easily installed, particularly in a housing. Furthermore, they can be designed compactly, thus achieving a significant improvement in terms of miniaturization of the lighting device. Furthermore, a particularly cost-effective provision of the aforementioned preferred components is advantageously possible, which has a positive impact on economic efficiency.

[0096] In a further preferred embodiment, the infrared LED can be operated in a night vision mode.

[0097] Although infrared light is invisible to humans, the use of one or more infrared LEDs is particularly advantageous for illuminating the environment, which is to be detected by one or more sensors. In particular, the use of infrared LEDs allows a sensor to detect the environment brightly—but in black and white—ensuring better perception of the environment and significantly customized use of the lighting device. Furthermore, a large radius of the environment can be advantageously detected, enabling particularly comprehensive detection. Short description of the characters

[0098] Fig. 1-2 Views of preferred embodiments of a lighting device on a headband Fig. 3-6 Views of preferred embodiments of a lighting device on a shoe Fig. 7View of individual components of a preferred embodiment of the lighting device on a shoe Fig. 8 Schematic view of an adapter Fig. 9 Side view of a preferred embodiment of the lighting device Detailed description of the characters

[0099] Fig. 1-2 show different views of a preferred embodiment of a lighting device 1, which is attached to a headband 3 is appropriate. Therefore, Fig. 1-2 also preferred embodiments of a system according to the invention.

[0100] In the illustrated embodiment, the lighting device comprises 1 a lighting unit 7, which is present in particular as a front lighting unit. The lighting device 1 includes a housing 15, in which internal components are incorporated. Furthermore, the lighting device 1 a brightness sensor 23 and a distance sensor25 In addition, there is a folding component 9 to provide a folding capability for the lighting unit 7 Furthermore, a mounting unit 13 and a resistance component 11 which is responsible for a restriction of the folding capability of the folding component 9 is used.

[0101] Fig. 3-6 show different views of a preferred embodiment of a lighting device 1, on a shoe 5 is appropriate. Therefore, Fig. 3-6 also preferred embodiments of a system according to the invention.

[0102] In the Fig. 3-6 It is shown that the device has a lock button 29 This is particularly useful for transport purposes. Furthermore, a side lighting unit 19 in Fig. 4so that a wide light emission in many directions is possible. In addition, the lighting device can 1 a switch 33 to operate the lighting device 1 and / or a battery indicator 31 include (see Fig. 5 ).

[0103] Fig. 7 shows a preferred embodiment of the lighting device 1, in which individual preferred components are shown. The lighting device 1 can have a lid 35 which covers the internal components which are covered by the housing 15 Furthermore, the switch 33 and the battery indicator 31 In addition, a computing unit 37 which, for example, serves to process data collected by sensors. Furthermore, a heat sink 39which can serve to cool the electrical components, for example for the battery 17 itself. The lighting device 1 can also be combined with a distance sensor 25 and a brightness sensor 23 The folding component 9 is with a

[0104] resistance component 11 with the housing 15 for the lighting unit 7 connected. The resistance component 11 is present as a spring, in particular as a torsion spring. The folding component 9 is connected via a rotary joint 27 with the fastening unit 13 connected. The fastening unit 13 can be in the form of a clip. The preferred components mentioned can be mounted on a shoe 5 (or a pair of shoes).

[0105] Fig. 8A shows a preferred embodiment of an adapter 41.The adapter 41 has four projections 43 The four projections 43 are arranged symmetrically. This ensures a more even distribution of forces and increased stability. By using four projections 43 The strength of the mechanism is advantageously increased, making it particularly robust and suitable for heavy use.

[0106] Fig. 8B is used to display a bottom side of the folding component 9 with the corresponding adapter accordingly Fig. 8A with four projections. There are also two integrated springs 45 for additional security in a locked position.

[0107] Fig. 9 shows a further preferred embodiment of the lighting device 1. This shows a side view of the lighting device 1In particular, the 180° foldability is shown as well as part of the resistance component 11. The resistance component 11 is present at least partially as detents in the housing. LIST OF REFERENCE SYMBOLS

[0108] 1Lighting device 3Headband 5Shoe 7Lighting unit 9Folding component 11Resistance component 13Fastening unit 15Housing 17Battery 19Side lighting unit 21Backlight unit 23Brightness sensor 25Distance sensor 27Rotary connection 29Lock button 31Battery indicator 33Switch 35Cover 37CPU 39Heat sink 41Adapter 43Protrusion 45Spring

Claims

1. Lighting device (1) which can be fastened to a consumer article, comprising a lighting unit (7), a fastening unit (13) and a folding component (9), wherein radiation can be emitted from the lighting unit (7), wherein the folding component (9) is connected to the fastening unit (13) and the lighting unit (7) is attached to the folding component (9), wherein the folding component (9) can be folded up to 180° with respect to an initial emission direction, wherein the folding component (9) is connected to a resistance component (11) for restricting the folding capability of the folding component (9).

2. Lighting device according to claim 1, wherein the lighting device (1) comprises an adapter via which the folding component (9) is connected to the fastening unit (13), wherein the adapter comprises at least two, preferably three, particularly preferably four, projections for a rotary connection (27), wherein the projections are preferably arranged symmetrically, wherein preferably the folding component (9) has a rotation angle of up to 90°, preferably of 45°-70°, for fastening the folding component (9) to the fastening unit (13), wherein preferably the folding component (9) comprises the adapter.

3. Lighting device (1) according to the preceding claim, wherein the fastening unit (9) comprises webs, preferably in an equal number as a number of projections, so that the webs and the projections provide a detachable connection between the folding component (9) and the fastening unit (13) via a rotational movement.

4. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) has at least one magnet which is present on the fastening unit (13) and / or the fastening unit (13) comprises a magnetic material, wherein preferably the magnet and / or the magnetic material comprises a ferromagnetic material, wherein preferably there is an equal number of magnets as a number of projections, wherein in particular the magnets are integrated in the fastening unit.

5. Lighting device (1) according to one or more of the preceding claims, wherein the folding component (9) has an additional closure, preferably comprising a spring.

6. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) has a drive, a sensor (23, 25) and a computing unit (37), wherein the lighting unit (7), the sensor (23, 25) and the computing unit (37) are data-connected to one another, wherein the computing unit (37) is configured to carry out a folding of the folding component (9) via the drive on the basis of a measured value of the sensor (23, 25).

7. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) comprises a computing unit (37) and a gyroscope for detecting changes in movement, wherein the computing unit (37), the gyroscope and the lighting unit (7) are data-connected to one another and the computing unit (37) is configured to specify a luminous intensity for the radiation of the lighting unit (7) on the basis of a measured value detected by the gyroscope.

8. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) comprises a computing unit (37) and a brightness sensor (23) for detecting ambient light, wherein the computing unit (37), the brightness sensor (23) and the lighting unit (7) are data-connected to one another and the computing unit (37) is configured to specify a luminous intensity for the radiation of the lighting unit (7) on the basis of the ambient light detected by the brightness sensor (23).

9. Lighting device (1) according to the preceding claim, wherein the brightness sensor (23) comprises a photoresistor which changes its resistance as a function of the ambient light, wherein the computing unit (37) is configured to process a change in the resistance for a specification of the luminous intensity of the radiation of the lighting unit (7).

10. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) comprises a computing unit (37) and a distance sensor (25) for measuring distances, wherein the computing unit (37), the distance sensor (25) and the lighting unit (7) are data-connected to one another and the computing unit (37) is configured to predetermine a luminous intensity for the radiation of the lighting unit (7) on the basis of the distance detected by the distance sensor (25), wherein the distance sensor (25) is preferably contactless.

11. Lighting device (1) according to one or more of the preceding claims, wherein the lighting unit (7) is connected to a drive for determining the emission direction of the radiation for a radiation angle which is preferably maintained constant.

12. Lighting device (1) according to one or more of the preceding claims, wherein the lighting unit (7) is connected to a heat sink (39), wherein the heat sink (39) preferably comprises a material selected from a group comprising aluminum, silver, copper and / or graphene, wherein the heat sink preferably comprises carbon nanotubes.

13. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) has an energy source for operating the lighting unit, wherein the energy source preferably comprises a rechargeable battery (17), wherein the rechargeable battery is particularly preferably selected from a group comprising a metal-sulfur rechargeable battery, in particular a lithium-sulfur rechargeable battery and / or graphene rechargeable battery, in particular a graphene-aluminum ion rechargeable battery.

14. Lighting device (1) according to one or more of the preceding claims, wherein the lighting device (1) has a USB-C connector system and / or a computing unit (37), wherein the computing unit (37) preferably comprises a communication unit for wireless transmission of data.

15. System comprising a lighting device (1) according to one or more of the preceding claims and a consumer article, wherein the lighting device is attached to the consumer article, wherein the consumer article is preferably selected from a group comprising a shoe (5), a bag, a headband (3), trousers, a sweater, a helmet, a vest and / or a jacket.

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