Abstract:
A mask includes a cover body, at least one first fan, at least one second fan and an air filter. The cover body has at least one air inlet and at least one air outlet. The at least one air inlet and the at least one air outlet penetrate through the cover body. The at least one first fan is disposed on the cover body and matches the at least one air inlet. The at least one second fan is disposed on the cover body and matches the at least one air outlet. The air filter is disposed on the cover body and partially overlaps the at least one air inlet.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No(s). 103213751 filed in Taiwan, R.O.C. on Aug. 1, 2014, the entire contents of which are hereby incorporated by reference. 
       TECHNICAL FIELD 
       [0002]    The disclosure relates to a mask, more particularly to a mask having a fan and an air filter. 
       BACKGROUND 
       [0003]    Air pollution is the introduction of particulates, biological molecules, or other harmful materials into the atmosphere, possibly causing diseases or death to humans. In addition to the particulates being harmful to humans, the atmosphere also contains some particulates possibly causing allergies in some specific areas, such as pollen and salts. 
         [0004]    Of all the different kinds of air pollutions, smog is the most difficult one to avoid. In direct, the smog indicates dust existing in the atmosphere. If a person inhales the smog, it may cause cardiopulmonary diseases. Furthermore, the smog may decrease the visibility of the surrounding environment, thereby increasing the possibility of causing traffic accidents. 
         [0005]    To prevent humans from the particulates in the atmosphere, the simplest way is to wear a mask. However, a common mask is difficult to effectively avoid inhaling the particulates. Therefore, some manufacturers install a filter on the mask, yet the filter obstructs the respiration of user, thereby causing the user to feel uncomfortable. 
       SUMMARY 
       [0006]    According to an embodiment of the disclosure, a mask comprises a cover body, at least one first fan, at least one second fan and an air filter. The cover body has at least one air inlet and at least one air outlet. The at least one air inlet and the at least one air outlet penetrate through the cover body. The at least one first fan is disposed on the cover body and corresponds to the at least one air inlet. The at least one second fan is disposed on the cover body and corresponds to the at least one air outlet. The air filter is disposed on the cover body and partially overlaps the at least one air inlet. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]    The present disclosure will become more fully understood from the detailed description given herein below, along with the accompanying drawings which are for illustration only, thus are not limitative of the present disclosure, and wherein: 
           [0008]      FIG. 1  is a perspective front view of a mask according to an embodiment of the disclosure; 
           [0009]      FIG. 2  is perspective rear view of the mask according to the embodiment of  FIG. 1 ; 
           [0010]      FIG. 3  is an exploded view of the mask according to the embodiment of  FIG. 1 ; 
           [0011]      FIG. 4  is a rear view of the mask according to the embodiment of  FIG. 1 ; 
           [0012]      FIG. 5  is a cross-sectional view of the mask along a line  5 - 5  in  FIG. 4 ; 
           [0013]      FIG. 6  is a cross-sectional view of the mask along a line  6 - 6  in  FIG. 4 ; and 
           [0014]      FIG. 7  is a perspective view of the mask worn by a user according to the embodiment of  FIG. 1 . 
       
    
    
     DETAILED DESCRIPTION 
       [0015]    In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawings. 
         [0016]      FIG. 1  is a perspective front view of a mask according to a embodiment;  FIG. 2  is a perspective rear view of the mask according to the embodiment.  FIG. 3  is an explosive view of the mask according to the embodiment. In this embodiment, a mask  2  comprises a cover body  21 , two first fans  22 , a second fan  23 , and an air filter  24 . 
         [0017]    The cover body  21  comprises a cover shield  211  and a side frame  212 . The cover shield  211  has a plurality of air outlets  211   a , a shield edge  211   b , a concave surface  211   c  and a convex surface  211   d . The side frame  212  comprises an assembling component  212   a  and a encircled frame component  212   b , and has a plurality of air inlets  212   c  and a plurality of air outlets  212   d . The concave surface  211   c  and the convex surface  211   d  are locate at two sides of the cover shield  211  opposite to each other. The concave surface  211   c  and the shield edge  211   b  together form a covering space  211   e . The assembling component  212   a  is disposed on the encircled frame component  212   b . The encircled frame component  212   b  is disposed on the concave surface  211   c , and the encircled frame component  212   b  is surrounded by the shield edge  211   b . The air outlets  211   a  of the cover shield  211  are formed in the cover shield  211  and extend through two sides of the cover shield  211 . The air inlets  212   c  of the side frame  212  are formed in the assembling component  212   a , and the air outlets  212   d  of the side frame  212  are formed in the encircled frame component  212   b  and extend through two sides of the encircled frame component  212   b . The cover shield  211  is partially made of light-transmissive material such as glass and transparent plastic. 
         [0018]    In this embodiment, the air inlets  212   c  are located at the top of the cover body  21 , and the air outlets  211   a  and the air outlets  212   d  are located at the bottom of the cover body  21 , wherein the top of the cover body  21  and the bottom of the cover body  21  are opposite to each other, but the disclosure is not limited thereto. In some other embodiments, the air inlets  212   c , the air outlets  211   a  and the air outlets  212   d  are located at other positions of the cover body  21 . In this embodiment, the number of the air inlets  212   c , air outlets  211   a  and that of the air outlets  212   d  are all more than one, but the disclosure is not limited thereto. In some other embodiments, the number of the air inlets  212   c , air outlets  211   a  and that of the air outlets  212   d  are all one. 
         [0019]    The following further describes the detail of the side frame. Please refer to  FIG. 3 ,  FIG. 4 ,  FIG. 5 , and  FIG. 6 .  FIG. 4  is a rear view of the mask according to the embodiment of  FIG. 1 .  FIG. 5  is a cross-sectional view of the mask along a line  5 - 5  in  FIG. 4 .  FIG. 6  is a cross-sectional view of the mask along a line  6 - 6  in  FIG. 4 . 
         [0020]    The assembling component  212   a  comprises a first splint  2121 , a second splint  2122 , two protecting cases  2123 , a covering board  2124  and a plurality of deflectors  2125 . The assembling component  212   a  has an opening  2126  and an accommodation space  2127 . The encircled frame component  212   b  has two first fan notches  2128  and a second fan notch  2129 . The first splint  2121 , the second splint  2122  and the two protecting cases  2123  are assembled together. The second splint  2122  is located between the first splint  2121  and the two protecting cases  2123 . The accommodation space  2127  is formed between the first splint  2121  and the second splint  2122 . The opening  2126  is formed between the first splint  2121  and the second splint  2122  and connected to the accommodation space  2127 . The covering board  2124  is located at and covers the opening  2126 . The two protecting cases  2123  cover the two first fan notches  2128 , respectively, so that the two first fan notches  2128  are both disposed between the second splint  2122  and the two protecting cases  2123 . The air inlets  212   c  are formed in the first splint  2121 , the second splint  2122  and the two protecting cases  2123  so as to connect the accommodation space  2127  and the two first fan notches  2128 . The air outlets  211   a  are formed in the cover shield  211  so as to connect the second fan notch  2129  and outside atmosphere, and the air outlets  212   d  are formed in the encircled frame component  212   b  so connect the second fan notch  2129  and the covering space  211   e . The deflectors  2125  are located inside the air inlets  212   c  which are formed in the two protecting cases  2123 . 
         [0021]    The two first fans  22  are located in the two first fan notches  2128 , respectively. The two first fans  22  partially overlap the air inlets  212   c  formed in the two protecting cases  2123 . In this embodiment, the number of the first fans  22 , the first fan notches  2128  and that of the protecting cases  2123  are all two, but the disclosure is not limited thereto. In some other embodiments, the number of the first fans  22 , the first fan notches  2128  and that of the protecting cases  2123  are one. 
         [0022]    The second fan  23  is located in the second fan notch  2129 , and partially overlaps the air outlets  211   a  and the air outlet  212   d . In this embodiment, the number of the second fan  23  and that of the second fan notch  2129  are both one, but the disclosure is not limited thereto. In some other embodiments, the number of the second fan  23  and that of the second fan notch  2129  are more than one. 
         [0023]    The air filter  24  is, for example, a High-Efficiency Particulate Air (HEPA) filter or an activated carbon filter leaf. The air filter  24  is located in the accommodation space  2127 , and partially overlaps the air inlets  212   c  formed in the first splint  2121  and the second splint  2122 . In this embodiment, the air filter  24  comprises a filtering core  241  and a rack  242 , wherein the rack  242  clamps the filtering core  241 , but the disclosure is not limited thereto. In some other embodiments, the air filter  24  does not comprise the rack  242 . 
         [0024]    Please refer to  FIG. 1  and  FIG. 2  again. The mask  2  further comprises a first light source  25  and a second light source  26 . The encircled frame component  212   b  further has an extending part  212   e  extending along the concave surface  211   c  from the shield edge  211   b  to a center of the concave surface  211   c , and a frame inner surface  212   f  facing towards the concave surface  211   c . Both of the first light source  25  and the second light source  26  are, for example, a light-emitting diode (LED) or a lamp. The first light source  25  is disposed on one side of the extending part  212   e  facing towards the concave surface  211   c . In other words, the first light source  25  is able to illuminate from the concave surface  211   c  to the convex surface  211   d  through the cover shield  211 . The second light source  26  is disposed on the side frame inside surface  212   e.    
         [0025]    Furthermore, the mask  2  further comprises an annular elastic component  27  disposed on the encircled frame component  212   b  of the side frame  212 . The annular elastic component  27  is, for example, a silica gel ring. Therefore, it is favorable for keeping a user more comfortable while wearing the mask  2 . It is also favorable for providing a sufficient mask attachment. 
         [0026]    In this embodiment, the mask  2  comprises a strap  28 . The cover shield  211  has two wearing parts  211   f  extending from the convex surface  211   d  towards outside. Each of the two wearing parts  211   f  has a wearing hole  2111 . Different two ends of the strap  28  are fastened to the wearing holes  2111  to be fixed to the two wearing parts  211   f , respectively. In this embodiment, the strap  28  is an elastic belt, but the disclosure is not limited thereto. In some other embodiments, the strap  27  comprises two ring-shaped bands fixed to opposite sides of the cover body  21 , respectively. 
         [0027]    The following describes the direction and operation for using the mask after the user wears it. Please refer to  FIG. 5 ,  FIG. 6 , and  FIG. 7 .  FIG. 7  is a perspective view of the mask worn by a user according to the embodiment of  FIG. 1 . In this embodiment, when the user wears the mask  2  on his/her face by the strap  28 , the face of the user is inside the covering space  211   e  of the cover shield  211 . The air inlets  212   c  and the first fans  22  are located at the top of the mask  2  to correspond to the forehead of the user, and the air outlets  211   a , the air outlets  212   d  and the second fan  23  are located at the bottom of the mask  2  to correspond to the jaw of the user. 
         [0028]    After putting the mask  2  on the face, the user turns on a power supply (not shown in the drawings) to drive the first fans  22  and the second fan  23  to operate. Since the first fans  22  increase the speed of an air-flow, the air-flow is able to rapidly flow from the atmosphere into the covering space  211   e  through the air inlets  212   c . When the air-flow passes through the air inlets  212   c , the air filter  24  removes the particulates and the harmful substances in the air-flow. After inhaling the air existing in the covering space  211   e , the user exhales a respiratory gas such as carbon dioxide. The respiratory gas is able to rapidly flow from the covering space  211   e  to the atmosphere through the air outlets  211   a  and the air outlets  212   d . Therefore, the user is able to breath comfortably with clean air. 
         [0029]    Furthermore, the concave surface  211   c  of the cover body  211  faces towards the user. Therefore, the concave surface  211   c  is for reducing a local resistance of the air-flow located in the covering space  211   e  so that most of the air-flow is a laminar flow (in other words, less turbulent flow in the covering space  211   e ), whereby it is favorable for further increasing the speed of the air-flow located in the covering space  211   e.    
         [0030]    Furthermore, the air inlets  212   c  and the first fans  22  are located at the top of the mask  2  to correspond to the forehead of the user. The air outlets  211   a , the air outlets  212   d  and the second fan  23  are located at the bottom of the mask  2  to correspond to the jaw of the user. Therefore, the air existing in the covering space  211   e  flows from the top of the cover body (the forehead) to the bottom of the cover body  21  (the jaw) so that the respiratory gas is able to rapidly pass through the air outlets  211   a  and the air outlets  212   d  instead of passing through the air inlets  212   c , whereby it is favorable for preventing the mask  2  from fogging. 
         [0031]    Moreover, the first fans  22  and the second fan  23  provide a positive pressure relative to the atmosphere in the covering space  211   e . Therefore, it is favorable for avoiding polluted air-flowing into the covering space  211   e  from a gap between the face of the user and the mask  2 . The user is able to adjust the angle of the deflectors to control the direction of the air-flow flowing into the covering space  211   e.    
         [0032]    When in a smoggy area, the user can turn on a power supply (not shown in the drawings) to drive the first light source  25  and the second light source  26 . The first light source  25  illuminates the outside of the mask  2 , and the cover shield  211  is made of light-transmissive material. Therefore, it is favorable for increasing a visual distance for the user to be able to see for a greater distance. The second light source  26  illuminates the covering space  211   e , and the cover shield  211  is made of light-transmissive material. Therefore, other people can see and identify the user in the smog. 
         [0033]    According to the disclosure, a first fan of a mask is drives an air-flow to rapidly flow from the atmosphere into the mask through the air inlets and an air filter. The air filter removes the particulates and the harmful substances in the air-flow. After inhaling the air existing in the mask, the user exhales a respiratory gas. A second fan of the mask drives the respiratory gas to rapidly flow from the mask to the atmosphere through the air outlets. Therefore, the user is able to breathe comfortably with non-particulate and clean air. 
         [0034]    Furthermore, the air inlets and the first fan are located at a top of the mask, and the air outlets and the second fan are located at a bottom of the mask. Therefore, the air existing in the mask flows from the top of the mask to the bottom of mask so that the respiratory gas is able to rapidly pass through the air outlets instead of passing through the air inlets, whereby it is favorable for preventing the mask  2  from fogging. 
         [0035]    Moreover, a first light source of the mask illuminates the outside of the mask so that it is favorable for increasing a visual distance for the user to be able to see for a greater distance. A second light source of the mask shines towards the inside of the mask so that other people can see and identify the user in the smog. 
         [0036]    In addition, an annular elastic component of the mask is favorable for keeping the user more comfortable while wearing the mask. It is also favorable for providing a sufficient mask attachment.