Personal protective equipment for rail workers

Abstract

A safety eyewear apparatus for a rail worker, comprising: a frame configured to rest on the face of the rail worker, said frame comprising a main body utilizing a bridge for resting on the nose of the rail worker and a pair of arms for resting over the ears of the rail worker, wherein the arms are attached to the main body in a hinged manner; a pair of lenses, arranged for impact-resistance, and operatively coupled to the frame; wherein the frame comprises Light Emitting Diode, LED, light sources, directed to the eyes of the rail workers, a controller driving the light sources for controlling light emitted thereby and a battery for powering the light sources and the controller; wherein the LEDs are arranged to emit light at different wavelengths; and wherein the controller is configured to drive the light sources to emit light at a predefined wavelength in response to external factors, thereby facilitating fatigue management for the rail worker during use of the safety eyewear apparatus.

Description

[0001] Title

[0002] Personal protective equipment for rail workers

[0003] Technical field

[0004] The present disclosure relates to personal protective equipment for rail workers.

[0005] Background

[0006] Rail networks are vital for the efficient movement of goods and passengers, and their proper functioning relies on consistent maintenance to prevent wear and tear, ensure structural integrity, and address potential safety concerns. Regular maintenance activities, such as track inspections, signal checks, and equipment upgrades, contribute to the overall reliability and longevity of rail systems. Additionally, construction and expansion projects are essential for accommodating the evolving needs of transportation and logistics, making the ongoing work on rail sites integral to sustaining the functionality and capacity of rail networks. Rail workers form the backbone of the maintenance and operational efforts on rail sites. Their expertise encompasses a wide range of skills, from mechanical and electrical knowledge to proficiency in safety protocols and emergency response. These professionals are responsible for the intricate tasks of repairing tracks, maintaining locomotives, and troubleshooting complex rail systems. The dedication and competence of rail workers are fundamental to the seamless operation of railways and the prevention of potential accidents or disruptions. As the custodians of rail infrastructure, their commitment to precision and safety is paramount to the sustained success of the rail industry.

[0007] As railway networks experience a continuous increase in traffic, with an evergrowing demand for efficient transportation, the railway infrastructure is under increasing pressure. The expanding volume of train operations means that the windows of time available for maintenance activities are becoming shorter and require even more precise planning. This heightened demand for efficient maintenance poses a significant challenge for ensuring the safety of rail workers. It is therefore becoming increasingly crucial to streamline maintenance processes while maintaining the highest safety standards. As such, there is a need to invest in advanced technologies, innovative scheduling methods, and stringent safety protocols to assure such high levels of safety. Guaranteeing the safety of rail workers in this context is not only a matter of compliance but a fundamental aspect of sustaining the integrity and reliability of the rail network in the face of escalating demands.

[0008] Ensuring the safety of rail workers engaged in maintenance activities is thus of utmost importance. The rail environment presents inherent risks, from heavy machinery and moving trains to challenging weather conditions. Adequate safety measures, such as the use of personal protective equipment (PPE), comprehensive training programs, and strict adherence to safety protocols, are essential to mitigate these risks. Regular safety audits, hazard assessments, and a culture that prioritizes safety consciousness contribute to creating a secure working environment for rail workers. The commitment to the well-being of rail workers not only protects individuals but also upholds the reliability and integrity of rail operations, emphasizing that safety is an integral part of every task performed on rail sites.

[0009] Significant advancements have been made in improving safety protocols, onsite behavior at the job sites, along with adaptations in train safety systems, train operation systems, train control systems and other systems to enhance safety. However, in the field of personal safety equipment, innovation has been relatively scarce, especially for specific use at job sites. As such, there is a need within the industry to introduce more innovative personal safety equipment that can contribute to elevating the safety of rail workers and, consequently, ensuring the overall safety and continuity of railway operations.

[0010] While existing safety measures and protocols have undoubtedly made valuable contributions, the pursuit of innovative personal safety equipment remains a priority. Innovations in this domain have a potential to provide the rail workers with more effective and technologically advanced protective gear. The aspiration is not only to meet current safety standards but to exceed them, fostering a safer environment for those working on and around the tracks and fortifying the resilience of the railway network as a whole.

[0011] Consequently, an object of the present invention is to provide a more innovative personal safety equipment by which rail workers are able to be more effective and more secure in performing their maintenance task at a job site.

[0012] The above mentioned and other objects are achieved, in a first aspect of the present disclosure, by a safety eyewear apparatus for a rail worker, comprising: a frame configured to rest on the face of the rail worker, said frame comprising a main body utilizing a bridge for resting on the nose of the rail worker and a pair of arms for resting over the ears of the rail worker, wherein the arms are attached to the main body in a hinged manner; a pair of lenses, arranged for impact-resistance, and operatively coupled to the frame; wherein the frame comprises Light Emitting Diode, LED, light sources, directed to the eyes of the rail workers, a controller driving the light sources for controlling light emitted thereby and a battery for powering the light sources and the controller; wherein the LEDs are arranged to emit light at different wavelengths; and wherein the controller is configured to drive the light sources to emit light at a predefined wavelength in response to external factors, thereby facilitating fatigue management for the rail worker during use of the safety eyewear apparatus.

[0013] In recent years, the focus on occupational safety and the well-being of workers engaged in various industries has intensified, with particular attention directed towards those working in environments such as rail sites, where the potential for accidents and hazards is inherent. Rail workers, responsible for the maintenance and upkeep of railway infrastructure, are exposed to a multitude of risks, including flying debris, environmental elements, prolonged exposure to demanding conditions, and collisions with rail vehicles. The importance of providing effective personal protective equipment (PPE) for rail workers cannot be overstated, with safety glasses being a critical component to safeguard their vision and overall safety.

[0014] Traditional safety glasses commonly used by rail workers offer basic eye protection but often lack features that address the specific challenges posed by the rail environment.

[0015] The safety eyewear apparatus according to the present disclosure, or also referred to as the glasses, provide further measures to address these specific challenges. The glasses comprises a frame and pair of lenses. The frame corresponds to typical safety glasses and is configured to rest on the face of the rail worker, and in particular rest on at least the nose and behind or on the ears of the rail worker. The frame comprises a main body, utilizing a bridge for resting on the nose. It also has a pair of arms for resting over the ears. The arms are attached to the main body in a hinged manner, such that the glasses may be brought into a collapsed or folded state, and into an unfolded state, typical for glasses. The lenses of the glasses are arranged and suitable for safety glasses, and to this end arranged for impact-resistance and operatively coupled to the frame. The impartresistance may be obtained by use of safety glass, which does not scatter upon impact, or may be made from plastics such that any scattering upon impact is prevented, or harmless.

[0016] The glasses according to the present disclosure are further characterized by having Light Emitting Diode, LED, light sources, a battery and a controller. This way the glasses can be identified as smart safety glasses.

[0017] The LED light sources have low power requirements, which allows a small battery, contained on or in the frame of the glasses, to power the light sources for a certain period of time, sufficient for a work shift, e.g. 8 hours uninterrupted use. The glasses may be arranged to connect to an external battery pack to increase the time of use. In an example, the glasses, when the battery is connected to the external battery pack, may still be operational. Hence, the battery pack may allow charging through a battery pack, and in another example, may expand the total the battery capacity with the external battery pack and thereby extend the total period of use. The light sources are arranged to emit light at certain wavelengths, and direct the light emitted to the eyes of the rail worker. The light sources are driven by a controller, the controller controls the activation of the light sources and also controls the light color or temperature of the light emitted, this is done by controlling the light sources to emit at different, predefined wavelengths. These wavelengths at least have one wavelength which is approximately between 400 and 600 nanometer, nm, and more preferably, between 435 nm and 500 nm, more preferably 450 and 480, more preferably 460 nm and 470 nm. The light sources thus are arranged to emit photons at this wavelength, which corresponds to a blue color.

[0018] With the light emitted at a wavelength as blue color, exposes the eyes of the rail worker in an artificial manner which is beneficial for the rail worker as it not only minimizes hindering of the artificial light on the actual environment, by which the rail worker is not hindered in performing the maintenance tasks at hand. Moreover, with such artificial light, the glasses allow influencing the circadian rhythm of the rail worker. Since rail workers often work in different shifts, and often in night shifts, they have a natural tendency to be in a less alert state of being, as the human body has a natural tendency to sleep during night. By subjecting the rail worker to artificial light with a higher concentration of, or addition of light at a blue wavelength, the circadian rhythm can be influenced and daylight and corresponding levels of alertness of the rail worker, can be simulated thereby. This strongly improves the safety of the rail worker in a dangerous environment at or near a rail site. The glasses according to the present disclosure, are arranged to operate in different operational modi. These modi can for example include a standard modus of operation in which the light sources are not activated, and a blue modus wherein the light sources emit blue light, as well as an orange modus wherein the light sources emit orange light. By emitting blue light during the early part of the (night) shift of the rail worker, and transitioning to orange light when the shift has ended, the glasses aim to mimic natural sunlight patterns, effectively regulating the user's melatonin production and promoting wakefulness. The incorporation of this circadian-sensitive LED arrangement in safety glasses ensures not only optimal vision and eye protection but also addresses the issue of worker fatigue by addressing the unique challenges faced by night-shift workers of rail workers, contributing to their enhanced alertness, productivity, and overall health and safety. The incorporation of LEDs in safety glasses may address prolonged exposure to challenging conditions can lead to decreased alertness and increased risk of accidents, and contributes to the overall well-being and performance of the rail workers.

[0019] The safety glasses are designed to increase user comfort. The frame is configured to ensure a secure and comfortable fit on the user's face, minimizing distractions and discomfort during wear. The impact-resistant lenses provide additional protection against flying debris and potential hazards, meeting and exceeding industry standards for eye protection.

[0020] In an embodiment, the light sources are arranged to emit photons at a wavelength between 435 nm and 500 nm, more preferably 450 and 480, more preferably 460 nm and 470 nm.

[0021] The glasses are at least arranged to emit blue light in the wavelengths indicated above, e.g. at approximately between 460 and 470 nm, or at least in the range of 435 nm and 500 nm. The glasses are further preferably arranged to emit orange light in a wavelength of 435 nm to 500 nm and 600 nm to 700 nm. The glasses may however also be configured for full visible spectrum wavelength light or light with a wavelength corresponding to a natural light at a particular time of day. The simulation of time of day can be manipulated by having a light spectrum or wavelength as desired in accordance with the working shift instead of the actual time of day.

[0022] In an embodiment, the frame comprises a single light source, and a light guide member, arranged to direct light from the single light source at least partly onto the eyes of the rail worker. In an embodiment, the frame comprises two light sources, and at least two light guide members, arranged to direct light from a light source at least partly onto a respective eye of the rail worker.

[0023] In an embodiment, the light guide member or members are arranged for diffusion of the light onto a respective eye of the rail worker.

[0024] In an embodiment, the light guide member, light guide members, or light sources are configured for emitting at least partly light indirectly onto the eyes of the rail worker.

[0025] To minimize the number of components, the glasses may have multiple or a single light source which is configured and positioned to emit light onto both eyes by use of a single or multiple light guides. The guides may be configured to diffuse the light on the eyes and / or may be configured such that all or part of the light emitted by the light sources is directed onto the eyes.

[0026] The effect of such a configuration can have several positive implications. Firstly, indirect light emission may contribute to reducing direct glare, preventing discomfort or potential visual impairment for the rail worker. This indirect approach could enhance the overall user experience by providing a more diffused and evenly distributed illumination, and thereby also improve safety. Additionally, by controlling the direction and intensity of the indirectly emitted light, the safety eyewear apparatus may optimize its effectiveness in managing fatigue without causing unnecessary strain or distraction for the rail worker.

[0027] Furthermore, such an embodiment may offer a potential advantage in terms of adaptability to different lighting conditions or environments. By indirectly illuminating the eyes, the safety eyewear can potentially mitigate the impact of harsh or uneven lighting, creating a more consistent and comfortable visual experience for the rail worker. Overall, this feature enhances the versatility and user-centric design of the safety eyewear, contributing to improved safety and well-being during nighttime rail work.

[0028] In an embodiment, the pair of lenses is interchangeable with a further pair of lenses, and wherein the pair of lenses and further pair of lenses have a different color, more in particular, the pair of lenses being configure for transmission of blue light and the pair of further lenses being configure for transmission of orange light, more in particular, light in the wavelength of 435 nm to 500 nm and 600 nm to 700 nm.

[0029] In this embodiment, the pair of lenses is designed to be interchangeable with a further pair of lenses. This interchangeability provides users, specifically rail workers, with the flexibility to adapt the eyewear to varying conditions. Notably, the pair of lenses is configured for the transmission of blue light, promoting alertness, while the further pair of lenses is configured for the transmission of orange light in specific wavelength ranges (435 nm to 500 nm and 600 nm to 700 nm). This color differentiation aligns with the understanding of how different wavelengths of light influence circadian rhythm. The user can thus switch between lenses to optimize visual comfort and fatigue management during different phases of the night shift. This embodiment enhances the versatility of the safety eyewear, allowing for a personalized and effective approach to address the specific needs of rail workers in dynamic working environments.

[0030] The embodiment may be considered an alternative or partial alternative to a fully electronic control of the light color through the light sources. Instead of, or in addition to, the control of the color of light emitted by the light sources, the rail worker may change the lenses. For example, the lenses may have a standard blue coloring, such that in absence of light from the light sources, alertness is promoted, whereas, at the end of the shift, the light may be activated and colored orange, to inhibit alertness.

[0031] In an embodiment, the controller is arranged to drive the light sources with one of a predefined illumination protocol, wherein the protocol has one or more of a predefined duration, pulse shape, duty cycle, intensity, lux, wavelength of the illuminated light.

[0032] In this embodiment, the safety eyewear apparatus incorporates a controller designed to drive the light sources with a predefined illumination protocol, thereby introducing a sophisticated level of control over the emitted light. The protocol may encompass various parameters, including predefined duration, pulse shape, duty cycle, intensity, lux, and wavelength of the illuminated light. This meticulous control allows for a tailored and dynamic adjustment of the light emitted onto the eyes of the rail worker. The predefined parameters within the illumination protocol enable precise customization to meet specific requirements, ensuring optimal fatigue management and visual comfort during use. By allowing manipulation of key lighting characteristics, this embodiment offers a nuanced approach to enhancing the safety eyewear's effectiveness, providing users with a finely tuned and adaptable solution for diverse working conditions.

[0033] In an embodiment, the lenses are tinted to reduce glare and enhance visibility in varying light conditions.

[0034] In an embodiment, the lenses are coated with a light / shading coating, antiscratch coating, and anti-fog coating for improved visual clarity and durability.

[0035] In an embodiment, the glasses further comprise side shields on the frame for additional protection against debris and external elements. In an embodiment, the glasses further comprise an adjustable nose bridge for accommodating various facial structures and ensuring a comfortable fit.

[0036] In an embodiment, the glasses further comprise adjustable legs for a customizable fit and enhanced wearer comfort.

[0037] In an embodiment, the lenses provide UV protection for safeguarding the eyes of the rail worker from harmful ultraviolet radiation.

[0038] In an embodiment, the glasses comprise non-slip sections on the nose and legs of the frame for enhanced stability during use.

[0039] In an embodiment, the glasses comprise non-slip tip sections on the nose bridge and legs for improved wearer comfort and secure positioning.

[0040] In an embodiment, the lenses are made from impact-resistant polycarbonate material for durability and protection against high-velocity impacts.

[0041] In an embodiment, the frame is constructed from lightweight and durable materials for wearer comfort and reduced fatigue during prolonged use.

[0042] In an embodiment, the LEDs are disposed in the frame on or near the legs, or on or near the bridge, to ensure uniform distribution of light and enhanced light illumination coverage.

[0043] The embodiments above collectively contribute to a comprehensive enhancement of the safety glasses' functionality, usability, comfort and user experience. Firstly, the tinted lenses effectively reduce glare and improve visibility under varying light conditions, addressing a fundamental concern for rail workers. The application of coatings, including light / shading, anti-scratch, and anti-fog, ensures heightened visual clarity and durability, enhancing the longevity of the eyewear. Additional protective features, such as side shields and UV protection, fortify the glasses against debris and harmful radiation, prioritizing the safety of the rail worker's eyes. The incorporation of adjustable nose bridges and legs caters to various facial structures, promoting a comfortable and customizable fit. Non-slip sections and tips on the nose, legs, and bridge enhance stability and wearer comfort during use, minimizing the risk of slippage. The impact-resistant polycarbonate lenses and lightweight yet durable frame materials collectively contribute to the overall robustness and longevity of the safety glasses. Finally, the specific placement of LEDs in the frame ensures uniform light distribution, optimizing illumination coverage for enhanced safety and visibility. These embodiments, in combination or solely, add to the safety of the eyewear design, prioritizing not only protection but also comfort and adaptability for users in dynamic work environments. In an embodiment, the battery is positioned within the frame.

[0044] In an embodiment, the glasses comprise a rechargeable battery. This allows for prolonged and sustainable use.

[0045] In an embodiment, the controller is positioned within the frame for convenient access and control by the rail worker.

[0046] With such features, a balanced and ergonomic design is obtained.

[0047] In an embodiment, the controller is configured to change the predetermined wavelength of emitted light based on predefined user preferences.

[0048] In the embodiment, the safety eyewear's controller adapts the emitted light's wavelength based on user preferences, providing a personalized experience. This feature enhances user comfort and fatigue management, allowing rail workers to customize the eyewear's lighting to align with their individual preferences, optimizing its circadian-sensitive lighting benefits.

[0049] In an embodiment, the LEDs are configured to change wavelength in seamless transitions.

[0050] In this embodiment, the safety glasses feature LEDs designed to undergo seamless transitions in wavelength, prioritizing enhanced visual comfort. This feature ensures a smooth shift between different light wavelengths, minimizing potential discomfort for the wearer. The seamless transitions contribute to a more natural and user-friendly lighting experience, addressing visual fatigue concerns during use and further optimizing the overall effectiveness of the safety eyewear.

[0051] In an embodiment, the change of wavelength of the LEDs is dynamically personalized based on external environmental factors including one or more of the time of day, time duration of use, level of sleepiness of the rail worker, light intensity of the environment, time of year.

[0052] In this embodiment, the safety eyewear introduces dynamic personalization by configuring the change in wavelength of the LEDs based on external environmental factors. This feature may rely on one or more variables such as the time of day, duration of use, the rail worker's level of sleepiness, environmental light intensity, and the time of year. This dynamic adjustment aligns the eyewear with the rail worker's unique context, ensuring optimal circadian rhythm management and fatigue reduction. By responding to real-time environmental cues, this embodiment exemplifies a user-centric approach, enhancing the safety glasses' adaptability and effectiveness in diverse working conditions. In an embodiment, the change of wavelength of the LEDs is dynamically personalized based on external environmental factors including one or more of the current location of the rail worker, current safety condition at the current location of the rail worker and a predefined safety condition independent of the current location of the rail worker.

[0053] In this embodiment, the safety eyewear incorporates dynamic personalization by adjusting the wavelength of the LEDs based on external environmental factors, including the rail worker's current location and safety conditions. This feature enables real-time contextual modus operandi, optimizing the eyewear's circadian-sensitive lighting based on the specific demands of the rail worker's surroundings. It dynamically considers the current safety conditions at the worker's location and a predefined safety condition, ensuring a tailored lighting experience that prioritizes both visual comfort and safety, making the safety glasses a versatile and adaptive solution for varying work environments.

[0054] In an embodiment, the apparatus comprises a communication module to be remotely controlled for adjustments and customization.

[0055] In this embodiment, the safety eyewear features a communication module designed for remote control, enabling seamless adjustments and customization. This innovative inclusion empowers users to remotely fine-tune the eyewear's settings, ensuring optimal performance and adaptability without requiring physical intervention. The communication module introduces a user-friendly interface, allowing for real-time adjustments based on evolving needs or preferences. This embodiment enhances the safety eyewear's versatility, providing a convenient and efficient means for users, such as rail workers, to customize their experience remotely, reflecting a progressive approach to user-centric design and technological integration.

[0056] In an embodiment, the apparatus comprises a communication module to be remotely controlled for performing one or more of software updates, synchronization of personalized settings across multiple devices used by the rail worker, and change of status of the controller across multiple devices used by the rail worker.

[0057] In this embodiment, the safety eyewear incorporates a communication module designed for remote control, facilitating various functionalities. This includes the ability to perform software updates, ensuring the eyewear stays current with the latest features. Additionally, the module enables the synchronization of personalized settings across multiple devices used by the rail worker, ensuring a consistent experience. Furthermore, it allows for the change of the controller's status across these devices, providing a seamless and unified control interface. In any of the embodiments having a communication module, the controller may connect via the communication module with a remote server or cloud environment. This allows upgrade of software or firmware of the controller and / or communication module, but also allows to push towards the controller or request from the controller any one or more of light schemes, personal settings, general settings, new profiles, predefined illumination protocols, etc.

[0058] In any of the embodiments, all such functionality may also be made available through a local communication module, for example based on wireless personal area network protocols such as Bluetooth, by which the controller may be connected to an application on the smartphone of the user.

[0059] The communication module may also communicate with a remote server for other use, either directly via a public telecommunication network for example, or indirectly, through a wireless personal area network via a smartphone of the user, to further connect with the remote server over e public telecommunication network, or a wireless local area network. Such other uses, in an example, may be defined as the controller to log any actions of the glasses, amongst which activating a color change with corresponding timestamp, but it may also comprises environmental information obtained from a sensor such as the environmental light level. These loggings in total or a selection thereof may be communicated to the remote server to unlock the data and make it accessible for external users. This may be useful for example in a situation where a boardroom is to be informed through dashboards of the actual status and use of the glasses by one or more users, e.g. rail workers.

[0060] In an embodiment, the controller incorporates an artificial intelligence system utilizing machine learning algorithms, analyzing the rail worker's biometric data and historical usage patterns to dynamically adjust wavelength and / or intensity.

[0061] In this embodiment, the safety eyewear's controller integrates an artificial intelligence system with machine learning algorithms. This system may analyze the rail worker's biometric data and historical usage patterns to dynamically adjust the wavelength and / or intensity of the emitted light. By leveraging individual physiological responses, the system optimizes fatigue management. This embodiment enables the power of artificial intelligence to enhance the safety eyewear's adaptability and effectiveness, allowing unique needs and responses of each rail worker to be tailored in real-time.

[0062] In an embodiment, the glasses further comprise a sensory feedback mechanism embedded within the frame, providing real-time haptic feedback to the rail worker in response to changing environmental conditions or potential safety hazards, enhancing situational awareness.

[0063] In this embodiment, the safety glasses incorporate a sensory feedback mechanism embedded within the frame, delivering real-time haptic feedback to the rail worker in response to changing environmental conditions or potential safety hazards. This feature serves to enhance situational awareness by providing tactile cues, allowing the rail worker to stay informed about their surroundings. The incorporation of this feedback mechanism represents a proactive mechanism to safety, offering an additional layer of awareness and responsiveness to dynamic conditions, thereby contributing to an overall improvement in the rail worker's safety and performance in complex and potentially hazardous environments.

[0064] In an embodiment, the light emitted by the LEDs is synchronized with ambient lighting conditions, utilizing sensors to detect and replicate the natural circadian rhythms of the rail worker, promoting alertness during night shifts and enhancing overall well-being.

[0065] In this embodiment, the safety eyewear enables the synchronization of LED- emitted light with ambient conditions, employing sensors to discern and replicate the rail worker's natural circadian rhythms. This integration aims to promote alertness during night shifts by harmonizing the eyewear's illumination with the surrounding environment. By mimicking the natural lighting patterns, this embodiment not only optimizes visual conditions but also fosters an overall sense of well-being for the rail worker. The attentive use of sensor technology underscores a user-centric design, acknowledging the profound impact of circadian rhythms on alertness and fatigue, thereby elevating the safety and effectiveness of the safety eyewear, especially in nocturnal work scenarios.

[0066] In an embodiment, the glasses comprise a communication module integrated into the frame, for the apparatus to wirelessly communicate with other safety equipment worn by nearby rail workers, fostering collaborative safety measures and real-time information sharing in complex railway environments.

[0067] In this embodiment, the safety glasses feature an integrated communication module within the frame, enabling wireless interaction with other safety equipment worn by neighboring rail workers. This design fosters collaborative safety measures and facilitates real-time information sharing in intricate railway environments. By seamlessly connecting with other safety devices, the glasses promote a coordinated approach to safety, allowing for swift communication and information exchange among rail workers. This embodiment enhances communication and cooperation to address the unique challenges posed by complex railway environments, ultimately contributing to a safer and more cohesive operational setting.

[0068] In an embodiment, the light emitted by the LEDs is modulated to emit specific wavelengths known to have circadian rhythm-regulating effects, thereby promoting a healthier sleep-wake cycle for rail workers engaged in varying shift schedules and minimizing the long-term impact of shift work on their well-being.

[0069] In this embodiment, the safety eyewear modulates the light emitted by the LEDs to release specific wavelengths known for their circadian rhythm-regulating effects. This design aims to foster a healthier sleep-wake cycle for rail workers involved in diverse shift schedules, mitigating the long-term impact of shift work on their well-being. By strategically incorporating circadian-sensitive lighting, the eyewear contributes to promoting better sleep patterns, aligning with the natural circadian rhythms and addressing the challenges posed by irregular work schedules. This embodiment underscores a proactive approach to wellbeing, acknowledging and addressing the specific needs of rail workers to enhance their overall health and quality of life, for an anti-intrusion fog generator according to any of the previous descriptions.

[0070] In an example, the safety eyewear may comprise a lens assembly configured to be impact-resistant, wherein the lens assembly includes materials such as polycarbonate, Trivex, or tempered glass, with a thickness sufficient to resist high-velocity impacts. It may be provided that the lens assembly conforms to safety standards such as EN 166 or ANSI Z87.1 , ensuring it can withstand mechanical stresses like the impact of a steel ball traveling at a predefined velocity. An effect of this feature is the reliable protection of the user's eyes against flying debris or particles, making the eyewear suitable for use in hazardous occupational environments, such as rail maintenance or construction sites.

[0071] In an example, the safety eyewear may include a frame constructed from durable, non-fragmenting materials such as nylon, acetate, or polyurethane, wherein the frame is designed to securely hold the lens assembly and provide additional structural integrity. It may be provided that the frame incorporates side shields or a wraparound configuration, extending lateral protection to prevent debris from entering the eyes from the sides. An effect of this feature is the enhancement of user safety in environments where peripheral hazards are present, ensuring comprehensive eye protection while maintaining structural durability under mechanical stresses.

[0072] In an example, the safety eyewear may comprise an adjustable fit system, wherein the frame includes adjustable nose pads, temple arms, or a foam or rubber gasket for forming a secure seal against the user's face. It may be provided that these adjustments allow the eyewear to accommodate various facial structures, providing stability and comfort during extended use. An effect of this feature is a reduction in distractions caused by ill- fitting eyewear, enabling the user to maintain focus on tasks while ensuring consistent protective coverage even during physical movement or strenuous activities.

[0073] In an example, the lens assembly of the safety eyewear may further include coatings for anti-fog and anti-scratch properties, wherein the interior surface of the lens is treated to resist condensation under temperature and humidity variations, and the exterior surface is treated to enhance scratch resistance. It may be provided that these coatings maintain optical clarity and extend the lifespan of the eyewear. An effect of this feature is the prevention of vision obstructions caused by fogging or scratches, ensuring consistent visibility and usability in dynamic or challenging conditions, such as night shifts or outdoor environments with variable weather.

[0074] In an example, the safety eyewear may comprise a light-emitting apparatus integrated into the frame, wherein the apparatus includes LEDs capable of emitting light at predefined wavelengths, such as those between 435 nm and 500 nm, to influence circadian rhythms or provide visual signaling. It may be provided that the light-emitting apparatus operates in conjunction with a controller and a power source, enabling adaptive light adjustments based on external factors like ambient light intensity or hazardous conditions. An effect of this feature is the dual functionality of enhancing user alertness during shifts while offering a safety signaling mechanism, which improves both individual performance and overall situational awareness in occupational environments.

[0075] In an example, the safety eyewear comprises a light-emitting apparatus integrated into the frame, wherein the apparatus is configured to emit visual signals in response to hazardous conditions. The apparatus may emit distinct light patterns, such as a flashing red light to indicate proximity to moving rail vehicles or a steady blue light for general safety alerts. It may be provided that the signaling system operates dynamically, adjusting the visual cues based on real-time hazard detection. An effect of this feature is the enhancement of situational awareness, allowing the wearer to respond promptly to external dangers in complex environments.

[0076] In an example, the safety eyewear may include a signaling system capable of synchronizing with external safety equipment worn by other rail workers. The synchronization may be facilitated through wireless communication protocols, enabling the exchange of hazard warnings or location-based alerts among team members. It may be provided that this feature supports collaborative safety measures, ensuring all workers are informed of critical conditions in real time. An effect of this feature is the improved coordination of safety responses, reducing the likelihood of accidents in dynamic occupational environments.

[0077] In an example, the safety eyewear may include environmental sensors integrated into the frame, configured to monitor ambient light intensity, weather conditions, or geographical location. These sensors may provide real-time data to the controller, which dynamically adjusts the intensity and wavelength of light emitted by the apparatus to optimize visibility and safety. It may be provided that the system adjusts to low-light environments or adverse weather conditions, enhancing the wearer's visual acuity and reducing fatigue. An effect of this feature is the reliable adaptation of the eyewear to diverse environmental challenges, ensuring consistent protection and performance.

[0078] In an example, the safety eyewear may include a controller configured to dynamically adjust light intensity and wavelength based on physiological data from the wearer, such as blink rate, heart rate variability, or eye movement. The controller may process this data to identify signs of fatigue, modifying the light output to maintain optimal alertness. It may be provided that this adaptive functionality prevents fatigue-related errors during prolonged work shifts. An effect of this feature is the promotion of worker safety and productivity, particularly in environments demanding sustained focus and attention.

[0079] In an example, the light-emitting apparatus of the safety eyewear may operate in predefined lighting protocols tailored to occupational safety requirements. These protocols may include shift-specific cycles, such as blue light exposure during early work periods and a gradual transition to warmer wavelengths toward the end of a shift to minimize circadian disruption. It may be provided that the protocols are programmable or adjustable via a remote interface, allowing customization to individual worker needs. An effect of this feature is the improved regulation of circadian rhythms, enhancing the wearer's alertness and post-shift recovery.

[0080] In a further aspect of the present disclosure, a safety eyewear apparatus is provided for a user, the apparatus comprising: a frame configured to rest on the face of the user, said frame comprising a main body utilizing a bridge for resting on the nose of the rail worker and a pair of arms for resting over the ears of the rail worker, wherein the arms are attached to the main body in a hinged manner; a pair of lenses, arranged for impact-resistance, and operatively coupled to the frame; wherein the frame comprises Light Emitting Diode, LED, light sources, directed to the eyes of the user, a controller driving the light sources for controlling light emitted thereby and a battery for powering the light sources and the controller; wherein the LEDs are arranged to emit light at different wavelengths; and wherein the controller is configured to drive the light sources to emit light at a predefined wavelength in response to external factors, thereby facilitating fatigue management for the user during use of the safety eyewear apparatus.

[0081] The safety eyewear apparatus is suitable for use by workers in various fields and applications, including but not limited to rail workers, night shift employees, and other professions, to enhance safety, well-being, and performance in diverse working environments. For certain fields and applications the safety eyewear apparatus may even be specifically configured, e.g. having additional protective coatings in accordance with the application, specific wavelengths corresponding to certain environment conditions or specific applications, etc.

[0082] Any example or embodiment disclosed in relation to the first aspect of the present disclosure, is similarly applicable for the above further aspect directed to safety eyewear apparatus for any user.

[0083] Brief description of the drawings

[0084] Fig. 1 illustrates an embodiment of a safety eyewear apparatus according to an aspect of the present disclosure.

[0085] Detailed description

[0086] Figure 1 shows an embodiment of a safety eyewear apparatus 100 according to an aspect of the present disclosure. The safety eyewear apparatus 100, or also referred to as glasses 100 for short, comprises several key components, which can be divided into several groups. The first and main component is the frame 110, 120, 130. The frame comprises a main body 110, a pair of arms or legs 120 and a nose bridge 131.

[0087] The nose bridge 131 is attached to the frame 110 or to the lenses or lens unit 140 as shown in figure 1. The pair of arms 120 of the frame 110, 120, 130 are comprised of one single part or may be made from several distinct parts as shown in figure 1. This allows for better configuration and customization of the glasses 100 to the user's needs.

[0088] The arms 120 are in the embodiment shown in figure 1 comprised of three components, 121 , 122, 123. The arms have a end section 121 which rests on and behind the ears, and a connecting section 122 which attaches to the end section 121 in a reconfigurable manner, and attaches at the other end to a connecting element or hinge 123. The connecting section 122 and end section 121 are preferably configurable in length to accommodate for different shapes and sizes of a user’s head and thereby providing users with a finely tuned and adaptable solution for diverse working conditions and specific comfort during use.

[0089] The length of the arms can be adjusted to the user's needs, and in the embodiment shown in figure 1 , this is achieved by the two sections to slide into one another in a coaxial manner. One of the sections is provided with a protrusion and the other section with various recesses disposed in a row at equal distances from each other.

[0090] The arms 120 are further comprised of a hinge 123 which allows the glasses 100 to pivot around an axis to allow the arms to fold together, as typical for glasses. The hinge 123 may however have a configuration, as shown in the figure, to allow for a pivot motion around a further axis, preferably perpendicular to the first axis, to allow the arms to have a offset angle with the lenses 140 or the frame 110. The hinge may thus be configured to have multiple pivot axis which each may be at least substantially perpendicular to each other.

[0091] The main body 110 of the frame 110, 120, 130, connects all components, 110, 120, 130, 140, together and provides strength, stiffness and a certain degree of flexibility to the glasses 100, i.e. to absorb some force upon impact and prevent the glasses and the frame to break thereupon.

[0092] The main body 110 also facilitates the fixation of the lenses 140, as for example shown in figure 1. The embodiment shown in figure 1 has a pair of lenses which is formed as a single lens unit. The skilled person will appreciate that the invention is however not limited to such embodiment and that for example distinct lenses which each have a surrounding frame section, are also part of the invention as claimed.

[0093] The lenses can be simply plastic or glass, and not prescription, but can also be prescription in accordance with a certain requirement of the user. The lenses may be colored or may be colorless and standard transparent. .The lenses may also be interchangeable, for example between prescription and non-prescription ones, or interchangeable between two different colors, for example blue and orange.

[0094] The frame 110 may be comprised of side shields 112, 113, 114, in the frame 110 for additional protection against debris and external elements. This side shield may be configured in the way illustrated in figure 1 , wherein an opening in the frame 112 allows to accommodate a side front cover 113 and a side back cover 114. The two side covers define a space 115 to accommodate electronics.

[0095] In the space 115 or housing, a battery, controller and / or driver for light sources can be accommodated. The space 115 may also accommodate for a communication module (not shown) which allows remote accessibility of the controller and allows the controller to communicate with a remote server or cloud application. The communication module may be arranged for wireless personal area networks, such as Bluetooth, Bluetooth LE and the like, and / or may also be arranged for public or private telecommunication networks such as LTE, loT, 3G, 4G, 5G and further generations, GSM-R, FRMCS. Preferably, multiple and preferably different, telecommunication network protocols are used to improvise and provide redundancy.

[0096] The space 115 thus accommodates a controller which is the central processing and control unit of the glasses. The controller drives one or multiple light sources, which have one or multiple light emitting diodes, LEDs. The light sources may be accommodated in the space 115, e.g. on both sides of the main body 110, or may also be accommodated in one of the spaces 115. In either configuration, the light illuminated from light sources is guided toward the lenses 140 and towards the eyes of the user. This can be achieved through light guides which may be accommodated within the main part 111 of the main body 110, and / or in the top section 143 of the lenses 140. This not only guides the light from the light source towards the eye, but may also distribute it across the eye by a light diffusion or reflecting element, for example disposed in the top section 143 of the lenses 140.

[0097] Alternatively, the light sources may also be accommodated in the main part 111 of the main body 110, and illuminated the light through the top section 143 of the lenses. In this embodiment, the main part 110 may accommodate one light source per eye, or multiple light sources per eye to improve a more uniform light distribution.

[0098] The main body 110 may also accommodate several light sources for distinct purposes. For example, a first group of the light sources may be configured to illuminate blue light to reduce sleepiness of the rail worker, for example during a night shift. A second group of light sources may be configured for signaling the rail worker. Such signaling may include any signals to provide situational awareness, for example, a blinking red color when the rail worker is in a certain predefined working zone, for example the danger zone, defined as all space within three meters horizontally from the nearest rail. The second group may also be used to signal other information, for example related to the current location of the rail worker, or a relative location in relation to the working zone, or when a train is approaching or when a hazard level is increased or lowered. The second group may have several types of signaling measures, for example a rapid blinking light when the communication module lost its connection, or a blinking light in which the color corresponds to a certain danger-level or distance of the nearest or an approaching train. The skilled person will appreciate that several types of signaling within the field of performing maintenance and other work at a rail site for which currently other technical measures have to be taken to provide such signaling, can be implemented into the light signaling means in the glasses 100 of the present disclosure.

[0099] The space 115 may further accommodate a battery, which may be a rechargeable battery. In such an embodiment, the rechargeable battery may be recharged by a charge port, disposed somewhere in the frame of the main body 110, for example in the side shields 113, 114. The side shield and thereby also the space in between may also be configured as a module which is interchangeable. This way the side components 113, 114 and the components in the space 115 such as one or more of the controller, battery and communication module may be replaceable very easily. This allows for easy upgrading between for example a non-communication module equipped version and one with communication module, or a local, e.g. Bluetooth LE module equipped version and a version with both local and remote communication capabilities. The controller, and optionally the communication module may also be housed in one of the spaces 115 at one side of the glasses, such that the battery is housed in the other space 115. This allows for easy replacement of the battery, e.g. to recharge the battery separate from the frame, and to easy quick replacement of the battery either being rechargeable or disposable.

[0100] The frame may further include one or more sensors to measure environmental values such as temperature, light intensity, humidity, and / or to measure situational values such as location, distance, and whether or not the glasses are in use. These sensors are connected to the controller such that their measured values can be taken into account when driving the light sources. This allows for example to adapt the light intensity of the light sources in accordance with the time of day. The frame may also comprise a (haptic) feedback module, to provide other types of signaling to the rail worker, for example a vibrating alert element, to vibrate and thereby signal the rail worker. The skilled person will appreciate that many other scenarios for the sensors and feedback can be applicable and suitable as well.

[0101] The controller may be arranged with a memory to store one or several illumination protocols. These protocols may be defined by having a distinct and predefined pattern of illumination which may be constant for a certain period of time or may be nonconstant and intervalling for certain periods of time. For example, the dose of blue light may be high at the start of a night shift, whereas near the end of the shift, the dose may be low and at the end of the shift replaced by an orange color. These protocols may be predefined in accordance with different types shifts, e.g. day and night shifts, and / or in accordance with the type of work being performed, and / or based on personal preferences of the rail worker.

Claims

CLAIMS1. A safety eyewear apparatus for a rail worker, comprising: a frame configured to rest on the face of the rail worker, said frame comprising a main body utilizing a bridge for resting on the nose of the rail worker and a pair of arms for resting over the ears of the rail worker, wherein the arms are attached to the main body in a hinged manner; a pair of lenses, arranged for impact-resistance, and operatively coupled to the frame; wherein the frame comprises Light Emitting Diode, LED, light sources, directed to the eyes of the rail workers, a controller driving the light sources for controlling light emitted thereby and a battery for powering the light sources and the controller; wherein the LEDs are arranged to emit light at different wavelengths; and wherein the controller is configured to drive the light sources to emit light at a predefined wavelength in response to external factors, thereby facilitating fatigue management for the rail worker during use of the safety eyewear apparatus.

2. The safety eyewear apparatus of any of the preceding claims, wherein the light sources are arranged to emit photons at a wavelength between 435 nm and 500 nm, more preferably 450 and 480, more preferably 460 nm and 470 nm.

3. The safety eyewear apparatus of any of the preceding claims, wherein the frame comprises a single light source, and a light guide member, arranged to direct light from the single light source at least partly onto the eyes of the rail worker.

4. The safety eyewear apparatus of any of the preceding claims, wherein the frame comprises two light sources, and at least two light guide members, arranged to direct light from a light source at least partly onto a respective eye of the rail worker.

5. The safety eyewear apparatus of any of the preceding claims 3 or 4, wherein the light guide member or members are arranged for diffusion of the light onto a respective eye of the rail worker.

6. The safety eyewear apparatus of any of the preceding claims, wherein the light guide member, light guide members, or light sources are configured for emitting at least partly light indirectly onto the eyes of the rail worker.

7. The safety eyewear apparatus of any of the preceding claims, wherein the pair of lenses is interchangeable with a further pair of lenses, and wherein the pair of lenses and further pair of lenses have a different color, more in particular, the pair of lenses being configure for transmission of blue light and the pair of further lenses being configure for transmission of orange light, more in particular, light in the wavelength of 435 nm to 500 nm and 600 nm to 700 nm.

8. The safety eyewear apparatus of any of the preceding claims, wherein the controller is arranged to drive the light sources with one of a predefined illumination protocol, wherein the protocol has one or more of a predefined duration, pulse shape, duty cycle, intensity, lux, wavelength of the illuminated light.

9. The safety eyewear apparatus of any of the preceding claims, wherein said lenses are tinted to reduce glare and enhance visibility in varying light conditions.

10. The safety eyewear apparatus of any of the preceding claims, wherein said lenses are coated with a light / shading coating, anti-scratch coating, and anti-fog coating for improved visual clarity and durability.

11. The safety eyewear apparatus of any of the preceding claims, further comprising side shields on the frame for additional protection against debris and external elements.

12. The safety eyewear apparatus of any of the preceding claims, comprising an adjustable nose bridge for accommodating various facial structures and ensuring a comfortable fit.

13. The safety eyewear apparatus of any of the preceding claims, comprising adjustable legs for a customizable fit and enhanced wearer comfort.

14. The safety eyewear apparatus of any of the preceding claims, wherein said lenses provide UV protection for safeguarding the eyes of the rail worker from harmful ultraviolet radiation.

15. The safety eyewear apparatus of any of the preceding claims, comprising nonslip sections on the nose and legs of the frame for enhanced stability during use.

16. The safety eyewear apparatus of any of the preceding claims, comprising nonslip tip sections on the nose bridge and legs for improved wearer comfort and secure positioning.

17. The safety eyewear apparatus of any of the preceding claims, wherein said lenses are made from impact-resistant polycarbonate material for durability and protection against high-velocity impacts.

18. The safety eyewear apparatus of any of the preceding claims, said frame is constructed from lightweight and durable materials for wearer comfort and reduced fatigue during prolonged use.

19. The safety eyewear apparatus of any of the preceding claims, wherein the LEDs are disposed in the frame on or near the legs, or on or near the bridge, to ensure uniform distribution of light and enhanced light illumination coverage.

20. The safety eyewear apparatus of any of the preceding claims, wherein the battery is positioned within the frame.

21. The safety eyewear apparatus of any of the preceding claims, wherein the controller is positioned within the frame for convenient access and control by the rail worker.

22. The safety eyewear apparatus of any of the preceding claims, wherein said controller is configured to change the predetermined wavelength of emitted light based on predefined user preferences.

23. The safety eyewear apparatus of any of the preceding claims, wherein the LEDs are configured to change wavelength in seamless transitions.

24. The safety eyewear apparatus of any of the preceding claims, further comprising a rechargeable battery.

25. The safety eyewear apparatus of any of the preceding claims, wherein the change of wavelength of the LEDs is dynamically personalized based on external environmental factors including one or more of the time of day, time duration of use, level of sleepiness of the rail worker, light intensity of the environment, time of year.

26. The safety eyewear apparatus of any of the preceding claims, wherein the change of wavelength of the LEDs is dynamically personalized based on external environmental factors including one or more of the current location of the rail worker, current safety condition at the current location of the rail worker and a predefined safety condition independent of the current location of the rail worker.

27. The safety eyewear apparatus of any of the preceding claims, wherein the apparatus is comprised of a communication module to be remotely controlled for adjustments and customization.

28. The safety eyewear apparatus of any of the preceding claims, wherein the apparatus is comprised of a communication module to be remotely controlled for performing one or more of software updates, synchronization of personalized settings across multiple devices used by the rail worker, and change of status of the controller across multiple devices used by the rail worker.

29. The safety eyewear apparatus of any of the preceding claims, wherein the controller incorporates an artificial intelligence system utilizing machine learning algorithms, analyzing the rail worker's biometric data and historical usage patterns to dynamically adjust wavelength and / or intensity.

30. The safety eyewear apparatus of any of the preceding claims, further comprising a sensory feedback mechanism embedded within the frame, providing real-timehaptic feedback to the rail worker in response to changing environmental conditions or potential safety hazards, enhancing situational awareness.

31. The safety eyewear apparatus of any of the preceding claims, wherein the light emitted by the LEDs is synchronized with ambient lighting conditions, utilizing sensors to detect and replicate the natural circadian rhythms of the rail worker, promoting alertness during night shifts and enhancing overall well-being.

32. The safety eyewear apparatus of any of the preceding claims, comprising a communication module integrated into the frame, for the apparatus to wirelessly communicate with other safety equipment worn by nearby rail workers, fostering collaborative safety measures and real-time information sharing in complex railway environments.

33. The safety eyewear apparatus of any of the preceding claims, wherein the light emitted by the LEDs is modulated to emit specific wavelengths known to have circadian rhythm-regulating effects, thereby promoting a healthier sleep-wake cycle for rail workers engaged in varying shift schedules and minimizing the long-term impact of shift work on their well-being.

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