Patent Document

CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of International Application No. PCT/KR2013/002975 filed on Apr. 9, 2013, which claims priority to Korean Application No. 10-2012-0048632 filed on May 8, 2012. The applications are incorporated herein by reference. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates to a safety helmet and a method of handling an accident using the safety helmet, and more particularly to a safety helmet which realizes a philosophy of respecting the life of an operator first and a method of handling an accident using the safety helmet. 
       BACKGROUND ART 
       [0003]    In general, it is dictated by law that a person who enters an industrial field such as a construction field, a shipyard, or a mine must wear a safety helmet. The safety helmet functions to protect the head of the wearer from an external impact. Generally, the safety helmet is not integrally provided with a headlamp, and the headlamp is fixed to an outer circumference of the safety helmet using a fixing string for fixing the headlamp. This normally prevents the wearer from feeling a weight feeling or a discomfort due to the safety helmet by reducing the weight of the safety helmet, and is particularly due to an environment in which surroundings can be identified by peripheral lighting even in the case a headlamp is not used. 
         [0004]    However, when a power outage occurs due to a fire or the like, the worker may become lost if he or she does not carry a separate headlamp or lighting unit and it is difficult for the worker to promptly evacuate. 
         [0005]    Accordingly, it is necessary to fix, to the safety helmet, a headlamp having a weight light enough not to cause a heavy feeling or discomfort to a . An LED is suitable for a lighting means which is lightweight, consumes little power of a battery, and emits light of a high luminance. 
         [0006]    A safety helmet which employs an LED as a headlamp is disclosed in Korean Utility Model No. 20-0450780 (published on Oct. 26, 2010). Korean Utility Model No. 20-0450780 has a configuration in which an LED lighting unit is rotatably installed to be accommodated within a shield part of a safety helmet such that the LED lighting unit can be exposed if necessary. 
         [0007]    However, there is no structure for emitting heat generated by the LED installed in the safety helmet in the description of the utility model, and the wearer may feel uncomfortable due to the heat generated by the LED when the LED protrudes downward from a lower side of the shield part. 
         [0008]    Further, the life span of the LED is rapidly shortened by the heat directly generated by the LED. 
         [0009]    There are prior technologies which provide a safety helmet with a means for detecting an accident of the wearer in addition to the LED lighting unit, and an example of the technologies is disclosed in Korean Patent Application Publication No. 10-2010-0089911. 
         [0010]    Korean Patent Application Publication No. 10-2010-0089911 provides a sensor for detecting an impact as a means for detecting an accident, and it technically has a meaning in realization of the functionality of a safety helmet because it is difficult to detect fatigue or a fainting of the user which is an accident not accompanied by an impact or an impact to an human body part other than the head, but it cannot guarantee the safety and life of the wearer as the first priority. 
       SUMMARY 
       [0011]    The present invention has been made in an effort to solve the above-mentioned problems, and provides a safety helmet with which a headlamp using an LED is integrally formed such that the wearer does not feel uncomfortable due to heat generated by the LED. 
         [0012]    The present invention also provides a safety helmet which can prevent the lift span of an LED applied to a safety helmet integrated headlamp from being shortened. 
         [0013]    The present invention also provides a safety helmet which can detect accidents of various causes in addition to a direct impact by continuously determining a state of consciousness of the wearer. 
         [0014]    The present invention also provides a method of handling an accident using a safety helmet through which if an accident is detected, information such as an accident location, or a chronic disease or a state of health of the wearer can be automatically transmitted according to a consciousness of the wearer. 
         [0015]    In accordance with an aspect of the present invention, there is provided a safety helmet including: 
         [0016]    a safety helmet body formed of a resin, for providing a semispherical space to accommodate the head of a human body; 
         [0017]    a lighting part provided at a front side of the safety helmet body, for accommodating a substrate having an LED to provide lighting on a front side of a helmet wearer; 
         [0018]    a metallic heat radiation part extending from a front side to a rear side of the safety helmet body along the center of an upper portion of the safety helmet body, for radiating heat while contacting a rear surface of the substrate; 
         [0019]    a communication unit accommodated in the safety helmet body, for handling communication and occurrence of an emergency situation; and 
         [0020]    a battery accommodated in a battery accommodation space, for supplying electric power to the communication unit and the lighting part. 
         [0021]    In accordance with another aspect of the present invention, there is provided a method of handling an accident using a safety helmet, the method including the steps of: a) determining an accident using a detection means if a state in which there is no motion of a wearer continues for a set time period or more; b) outputting a voice signal through a consciousness identification means such that the determination of an accident is identified and a state of consciousness of the wearer is identified; and c) when the wearer is determined to be unconscious in step b), reporting information of the accident stored in a memory to a rescue team through a reporting means. 
         [0022]    In the safety helmet according to the present invention, a metallic heat radiation part and a safety helmet body formed of a resin are coupled to each other through dissimilar injection-molding, whereby heat generated by an LED used as a lighting unit is emitted to an upper side of the safety helmet so that the wearer does not feel uncomfortable due to the heat generated by the LED. 
         [0023]    Further, in the safety helmet according to the present invention, the life span of an LED can be prevented from being shortened due to heat generated by the LED by easily emitting the heat to the outside through the heat radiation part. 
         [0024]    In addition, in the safety helmet and the method of handling an accident using the safety helmet, when an accident occurs, a state of consciousness of the wearer can be determined with a philosophy of respecting the life of the wearer first, and an accident location and wearer information are automatically transmitted to a rescue team when the wearer is unconscious, whereby a measure which is irrespective of the cause of an accident can be realized. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0025]      FIG. 1  is an exploded perspective view of a safety helmet according to an embodiment of the present invention; 
           [0026]      FIG. 2  is a view showing a coupled state of  FIG. 1 ; 
           [0027]      FIG. 3  is a sectional view of  FIG. 1 . 
           [0028]      FIG. 4  is a sectional view of a heat radiation part of  FIG. 1 ; 
           [0029]      FIG. 5  is a diagram of an embodiment of a lighting part applied to the safety helmet of the present invention; and 
           [0030]      FIG. 6  is a diagram of an embodiment of a communication unit applied to the present invention. 
       
    
    
     DETAILED DESCRIPTION 
       [0031]    Hereinafter, a safety helmet and a method of handling an accident using the safety helmet according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. 
         [0032]      FIG. 1  is an exploded perspective view of a safety helmet according to an exemplary embodiment of the present invention.  FIG. 2  is a view showing a coupled state of  FIG. 1 .  FIG. 3  is a sectional view of  FIG. 1 . 
         [0033]    Referring to  FIGS. 1 to 3 , the safety helmet according to an exemplary embodiment of the present invention includes a safety helmet body  100  formed of a resin, for providing a semispherical space to accommodate the head of a human body, a lighting part  400  provided at a front side of the safety helmet body  100 , for accommodating a substrate  410  having an LED  420  to provide lighting on a front side of a helmet wearer, a metallic heat radiation part  200  extending from a front side to a rear side of the safety helmet body  100  along the center of an upper portion of the safety helmet body  100 , for radiating heat while contacting a rear surface of the substrate  410 , a communication unit  500  accommodated in an accommodation space  110  partially protruding from a side of the safety body  110 , and a battery  300  accommodated in a battery accommodation space  120  at a rear side of the safety helmet body  100 , for supplying electric power to the communication unit  500  and the lighting part  400 . 
         [0034]    Hereinafter, a configuration and an operation of the safety helmet according to the exemplary embodiment of the present invention will be described in detail. 
         [0035]    First, when the safety helmet body  100  and the heat radiation part  200  are formed of a resin and a metal, respectively, the heat radiation part  200  is inserted into a mold to be coupled to the safety helmet body  100  when the safety helmet body  100  is injection-molded, after being integrally processed. 
         [0036]    The shape of the safety helmet body  100  corresponds to a structure having a semispherical space therein to accommodate the head of a human body. Of course, if necessary, an inner sheath such as Styrofoam may be applied to an inside of the safety helmet body  100 . 
         [0037]    An accommodation space  110  partially protruding from the semispherical structure while not contacting the wearer is provided at a side surface of the safety helmet body  100 , and a battery accommodation space  120  for providing a space for accommodating the battery  300  is provided on a rear surface of the safety helmet body  100 . 
         [0038]    A lighting part case  450  of which a front side is opened and having a recess to which a switch  460  is coupled at an upper portion thereof is also integrally injection-molded with the safety helmet body  100 . 
         [0039]    Then, one end of the heat radiation part  200  is inserted into an inside of the lighting part case  450 , and thereafter, the substrate  410  having the LED  420  is configured to contact the heat radiation part  200  located in an inside of the lighting part case  450  such that heat emitted from the LED  420  may be more effectively transferred to the heat radiation part  200  to be radiated. 
         [0040]      FIG. 4  is a sectional view of the heat radiation part  200 . Referring to  FIG. 4 , heat radiation fins  210  are arranged in a lengthwise direction of the heat radiation part  200 , and a plurality of protrusions  220  are provided on a bottom surface of the heat radiation part  200 . 
         [0041]    The heat radiation fins  210  may increase heat radiation efficiency by increasing a surface area of the heat radiation part  200 , and the plurality of protrusions  220  may allow the safety helmet body  100  to be more firmly jointed. 
         [0042]    The heat radiation fins  210  function as reinforcing ribs, thereby increasing strength of the safety helmet body  100  while minimizing an increase in the entire weight of the safety helmet body  100 . 
         [0043]    A battery accommodation space  120  is provided on a rear surface of the safety helmet body  100  spaced apart from the heat radiation part  200 . The battery accommodation part  120  provides a space of a predetermined volume, and the battery is accommodated in the battery accommodation part  120  to supply electric power to the substrate  410  and the communication unit  500 . 
         [0044]    The lighting part  400  is configured such that the LED  420  is operated by supplying electric power of the battery  300  to the substrate  410  through manipulation of the switch  460  by the wearer, and is provided with a reflection part  430  for limiting an emission angle of light and a lens  440  to project light of the LED  420  at a predetermined angle for lighting. 
         [0045]    The lens  440  may be replaced by a transparent or semitransparent cover in consideration of light efficiency. 
         [0046]      FIG. 5  is a diagram of another embodiment of the lighting part  400 . 
         [0047]    Referring to  FIG. 5 , the lighting part includes a plurality of LEDs  420 , and the LEDs  420  may have reflection parts  431  and  432  having different radiation angles, respectively. 
         [0048]    That is, the LEDs  420  corresponding to the reflection parts  431  and  432  having a specific radiation angle may be selected by manipulating the switch  460  to supply electric power, and light having a wide radiation angle and light having a narrow radiation angle may be selected and used. 
         [0049]    In this way, the present invention can allow the wearer to select intensive light or general light according to the operation, thereby improving convenience.  FIG. 6  is a diagram of an embodiment of a communication unit applied to the present invention. 
         [0050]    Referring to  FIG. 6 , the communication unit  500  applied to the safety helmet according to the present invention includes a communication module  510  coupled to an inside or an outside of the safety helmet body  100 , in detail, for performing wireless communication with another neighboring communication unit  500 , a camera  520  for photographing an image, a control unit  530  for storing images photographed by the camera  520  at a predetermined period, including the stored images to determine an accident, and controlling handling of an accident if the accident is determined as having occurred, an input unit  550  for allowing the wearer to perform a control input, an emergency signal generation unit  570  for generating an emergency signal under the control of the control unit  530 , a Bluetooth communication unit  560  for communicating with a mobile phone  580  of the wearer to request a rescue under the control of the control unit  530  in the case of an accident, a radio reception unit  590  for receiving a radio broadcast, a GPS module  595  for receiving a GPS signal, and a proximity sensor  597  for identifying a wearing state of the safety helmet and if the safety helmet is not worn, informing the control unit  530  that the wearing state is released to stop the communication module  510  including a microphone  511  and a speaker  512 . 
         [0051]    Hereinafter, a method of handling an accident using the above-configured safety helmet provided with a communication unit will be described. First, normally, an image photographed by the camera  520  may be transmitted to a nearby manager terminal through the communication module  510  to allow the manager to identify the contents of the operation or display the contents of the operation on a terminal of a leader when the safety helmet is used in a leisure activity such as mountain climbing, or operators, a manager and an operator, or mountain climbers may perform voice communication by using the microphone  511  and the speaker  512 . Hereinafter, the communication module  510 , the microphone  511 , and the speaker  512  are generally referred to as a communication unit. 
         [0052]    In leisure activities such as mountain climbing, a radio broadcast may be received by the radio reception unit  590  and may be listened to through the speaker  512 . 
         [0053]    According to the present invention, because the microphone  511  and the speaker  512  are adjacent to each other, when a space is produced between the microphone  511  and the speaker  512  while electric power is supplied to the communication module  510 , that is, the wearer takes off the safety helmet, howling occurs so that a howling sound may be generated through the speakers  512  of other users. 
         [0054]    Howling can be prevented by cutting off electric power of the communication module  510  when the safety helmet is taken off, by detecting the wearing state of the safety helmet using the proximity sensor  597 . 
         [0055]    The control unit  530  stores images of the camera  520  in a memory  540  as still image data at a predetermined period, and compares the still image data stored at a previous period with the currently stored still image data. 
         [0056]    After repeatedly performing the comparisons, generation of an accident is primarily determined if a state in which a motion of the wearer is not detected continuously for a predetermined time period. 
         [0057]    The control unit  530 , the camera  520 , and the memory  540  act as a detection means for detecting an accident, and it will be described below that the camera  520  may be replaced by a gyro sensor. 
         [0058]    That is, still images are stored in the memory  540  at an interval of  10  seconds, and if a state having no motion continues for one minute after the comparison of the still images, an accident is determined as having occurred. 
         [0059]    An accident also may be recognized by a chronic disease or a state of health of the wearer or leakage of a specific gas in the field through the determination method even when an external impact is not applied. This can place the highest value on the life of the wearer as compared with a safety helmet which detects an impact directly applied to the safety helmet according to the related art. 
         [0060]    That is, the detection means applied to the present invention detects the state of the wearer as a result, and detects an accident while paying attention to the result rather than the cause of the accident. 
         [0061]    In addition to the primary determination method for an accident using the camera  520 , a sensor for detecting a motion of a gyro sensor (not shown) may be used. That is, a state in which a motion is not detected by a sensor for detecting a motion continues for a preset time or more, an accident may be primarily determined as having occurred. 
         [0062]    If an accident is determined as having occurred, the control unit  530  identifies whether an accident has actually occurred, whether the wearer concentrates on work and is not moving at all, or whether the wearer is conscious when an accident occurs through a consciousness identification means including the memory  540 , the control unit  530 , and the speaker  512 . 
         [0063]    This reproduces a voice signal stored in the memory  540  through the speaker  512  and requests a response from the wearer. An example of the voice signal may be a question such as “Master, are you OK?”, and if the wearer pushes a specific button of the input unit  550  or speaks, the control unit  530  determines that an accident did not occur or that the wearer is conscious even though an accident has occurred. 
         [0064]    That is, after the voice signal is output, the control unit  530  identifies whether a voice signal is input through the microphone  511  or the input unit  550  within a predetermined time period, and determines that an accident did not occur or that the wearer is conscious even when an accident has occurred if a voice is input or an input signal is input through the input unit  550 . 
         [0065]    When the wearer is conscious, an emergency button provided in the input unit  550  is pushed to report the accident. The reporting of the accident follows an operation which is the same as or similar to the case of the operator not being unconscious which will be described below, and a detailed description thereof will be omitted. 
         [0066]    To the contrary, if neither a voice nor an input signal is input, the control unit  530  finally determines that the wearer is unconscious, and generates an emergency signal through the emergency signal generation unit  570  and connects to the portable terminal  580  of the wearer through the Bluetooth communication unit  560 , which is a report means, to request a rescue from an emergency services center. 
         [0067]    Then, the rescue request contents may be voice data stored in the memory  540  in advance, text messages, or communication data stored in advance, and the rescue request contents may include the name, the gender, the blood type, the age, the chronic disease, and the past disease history of the wearer, and may include a current location of the accident using GPS data received by the GPS module  595 . 
         [0068]    That is, the information of the wearer is stored in advance, and is collectively transmitted to the rescue team to aid in the rescue operation. Further, surrounding colleagues may be informed of the generation of the accident. The voice signal stored in the memory  540  may be transmitted to be reported through the communication module  510 , and a short text message may be collectively transmitted to stored phone numbers. 
         [0069]    According to the present invention, an accident due to various causes can be determined irrespective of the causes, and the generation of the accident can be automatically reported and handled even when the accident sufferer is unconscious, whereby the value of respect of a life can be realized. 
         [0070]    Further the present invention can be applied to a wide range of applications. For example, according to the present invention, an accident which may occur during a leisure activity such as rafting or cycling can be automatically handled, and a mission can be easily performed using a military safety helmet and an accident can be automatically handled as well. 
         [0071]    In addition, for example, senior citizens who live alone often freeze to death while sweeping snow, which recently has been an issue, in which case, accidents or states of consciousness of the senior citizens who cannot be cared for by neighbors can be automatically transmitted to hospitals or emergency service centers, whereby the senior citizens&#39; problems can be solved. 
         [0072]    It will be appreciated by those skilled in the art to which the present invention pertains that the present invention is not limited to the embodiment and may be variously modified without departing from the spirit of the present invention. 
         [0073]    The present invention uses a lighting part employing LEDs in a safety helmet, and solves inconvenience due to radiation of heat of the LEDs, and identifies occurrence of an accident of a helmet wearer to automatically take a measure according to the result, thereby achieving industrial applicability of providing the wearer with safety and convenience.

Technology Category: f