Abstract:
Provided are mask removable type automatic shading goggles in that a welding helmet is manufactured in a goggle shape, so that the mask removable type automatic shading goggles can replace the existing heavy and large welding surface; the mask removable type automatic shading goggles can also be used for both an arc welding work and a grinding work, a cutting work, and a gas welding work; and if necessary, the mask part can be easily attachably and detachably coupled to the goggle part.

Description:
CROSS REFERENCE 
     Applicant claims foreign priority under Paris Convention to Korean Patent Application No. 10-2013-0025926, filed 12 Mar. 2013, with the Korean Intellectual Property Office, where the entire contents are incorporated herein by reference. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to mask removable type automatic shading goggles, and more particularly to mask removable type automatic shading goggles in that a welding helmet is manufactured in a goggle shape, so that it can replace the existing heavy and large welding surface; it can also used for both an arc welding work and a grinding work, a cutting work, and a gas welding work; and if necessary, the mask part can be easily attachably and detachably coupled to the goggle part. 
     2. Description of the Prior Art 
     Generally, the welding is a technique of jointing same or different kinds of metal materials by partially applying a heat and a pressure to them at the same time. During the welding, since a strong light (arc) is emitted and broken pieces are generated, where the worker&#39;s eye is exposed to the strong light, it can cause loss of vision of the worker and inflict an injury on his eyeball etc. owing to the broken pieces. 
     Accordingly, in industrial settings, the work wears a welding helmet for protecting the eyeball and faces thereof from the strong light or broken pieces generated during the welding operation or cutting operation etc. 
       FIG. 1  is a schematic perspective view illustrating a conventional welding helmet. 
     As shown in  FIG. 1 , the conventional welding helmet includes a welding mask  210  for covering the entire face of the wearer, a wearing band  220  for wearing the welding mask  210  on a head of the wearer and rotating the welding mask  210  at a predetermined angle upward and downward and coupled to the welding mask  210  through a rotating axis  221 , a light detecting sensor (not shown) for detecting the strong light and generating a driving signal during the generation of the strong light formed at one side of the welding mask  210 , a liquid crystal display (LCD) cartridge  230  for protecting the eye of the wearer from the strong light generated during the operation thereof by varying the shading degree of shading the light according the driving signal and formed at a location corresponding to the eye of the wearer, and a front cover  240  for protecting the LCD cartridge  230  and formed at the front side of the LCD cartridge  230 . 
     According to the conventional welding helmet, where the strong light (arc) is generated during the welding operation, the light detecting sensor detects the strong light and generates the driving signal and the light transmission of the LCD cartridge  230  becomes lower according to the generated driving signal to block the strong light. 
     By the way, since the conventional welding helmet is manufactured to a comparatively large size for covering the face of the worker, it lays heavy strain on the neck of the worker owing to the weight thereof and the storage is not easy owing to the big size thereof. 
     Also, as described above, in the conventional welding helmet, in order to block the strong light generated during the welding operation, since the light transmission of the LCD cartridge  230  is remarkably lowered, there is a problem in that it is difficult to distinguish the surrounding objects. 
     Accordingly, where the worker intends to combine the welding operation with another operation, since the attaching and deattaching operations of the welding helmet are repeatedly performed, it is quite cumbersome to do. Also, in case of a manager in a work zone of managing various operations at the same time, in a state that the worker grasps the eye shield for protecting his eye from the broken pieces of the metalwork and the strong visible rays and the welding helmet for protecting his eye from the strong light generated during the welding operation, since he selectively uses the eye shield and the welding helmet, it is quite cumbersome to do. Moreover, because he purchases the eye shield and the welding helmet separately, the financial burden is increased owing to the purchase thereof. Furthermore, since the eye shield and the welding helmet are stored separately, there is a problem in that is very cumbersome to maintain them. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide mask removable type automatic shading goggles in that a welding helmet is manufactured in a goggle shape, so that the size thereof is compact and the weight thereof is light, and a mask is attachably and detachably coupled thereto, so that the working convenience is increased. 
     Another object of the present invention is to provide mask removable type automatic shading goggles in that a power is supplied to a LCD lens and a control panel by means of an electrical connection panel longitudinally formed on an inside body, so that it can prevent the cutoff of the power supply owing to the movement of the conventional power line, thereby prevent a malfunction due to a noise of a sense line. 
     Further another object of the present invention is to provide mask removable type automatic shading goggles in that air vents are formed at one side of the front body, so that the air is circulated to the inside and outside of the skirt part, thereby it can previously prevent the condensation from being occurred on the LCD lens owing to the heat generated from an eyeball of the worker. 
     To accomplish the object, the present invention provides mask removable type automatic shading goggles including: a goggle part having a LCD lens for blocking a harmful light and protecting a worker&#39;s eye installed on an inside thereof and closely worn to a worker&#39;s face; and a mask part having a cover body corresponded to a front surface of the goggle part and attachably and detachably coupled to the front surface of the goggle part, and a face protective cover for protecting the worker&#39;s face extended to a lower portion of the cover body. 
     Preferably, the mask part further includes a supporting jaw having a surface bent between the cover body and the face protecting cover and closely supporting an upper end or a lower end of the goggle part. 
     Preferably, the mask removable type automatic shading goggles further includes a hooking part extended from one side of an upper end of the cover body toward an upper end of goggle part so as to be coupled to an upper end portion of the goggle part. 
     Preferably, the mask removable type automatic shading goggles further includes a pair of locking walls as an extending side wall extended from both sides of the cover body to the rear of the cover body and having exposure holes for exposing both side surfaces of the goggle part to outside, so that, when the mask part is coupled to the goggle part, the pair of locking walls is slid to both sides of the goggle part while being opened to outside, whereby the pair of locking walls is elastically coupled to both sides of the goggle part. 
     Preferably, the goggle part further includes a skirt part of a soft material coupled to a rear surface of the goggle part and adhered to the worker&#39;s face and the skirt part includes a tightly contacting part corresponding to an outer circumference shape of the rear surface of the goggle part and adhered to the rear surface of the goggle part; a coupling part corresponded to the inner surface of the goggle part and protruded from the front surface of the tightly contacting part toward the front part thereof; a curve supporting surface having openings corresponded to a LCD lens at the front surface of the coupling part and extended along an outer circumference of the openings and bent and bordered on the coupling part; and a supporting plate corresponded to the curve supporting surface and closely coupled to the inside of the curve supporting surface. 
     Preferably, the goggle part further includes: extending side walls extended from both end portions thereof and the rear thereof; a control panel formed at one side of the side walls, supplying a voltage to a LCD lens, and varying a light transmission of the LCD lens; a power supply formed at one side of the goggle part and supplying a power to the control panel; and an electrical connection panel formed at the inside of the goggle part and having one end electrically connected to the power supply and the other end electrically connected to the control panel, wherein the power is supplied to the LCD lens and the control panel by means of the electrical connection panel. 
     Preferably, the goggle part further includes: an inside body formed in a shape corresponding to a curvature of a worker&#39;s face and having a pair of first extending side walls extended from both sides thereof to the rear thereof so as to an installation and first openings formed at the front surface thereof; a front body formed at a front surface of the inside body and having second openings corresponding to the first openings and a pair of second extending side walls extended from both sides thereof to the rear thereof and corresponded to the pair of the first extending side walls respectively and first exposure holes formed on one side of the pair of the second extending side walls so as to expose parts of the control panel and the power supply to outside; and the LCD lens for covering the first openings interposed between the inside body and the front body; openings, wherein the front body further comprises at least one ventilation part formed on one side thereof. 
     Preferably, the ventilation part includes a plurality of air vents formed on the upper and lower portions of the front body or one side of the second extending side walls so as to allow the air to be circulated to the inside and outside of the front body. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above as well as the other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: 
         FIG. 1  is a schematic perspective view illustrating a conventional welding helmet; 
         FIG. 2  is a front perspective view illustrating mask removable type automatic shading goggles according to the present invention; 
         FIG. 3  is a perspective view illustrating a status in that the mask part and the goggle part are separated from each other; 
         FIG. 4  is a front exploded perspective view illustrating mask removable type automatic shading goggles according to the present invention; and 
         FIG. 5  is a rear exploded perspective view illustrating mask removable type automatic shading goggles according to the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 
       FIG. 2  is a front perspective view illustrating mask removable type automatic shading goggles according to the present invention,  FIG. 3  is a perspective view illustrating a status in that the mask part and the goggle part are separated from each other,  FIG. 4  is a front exploded perspective view illustrating mask removable type automatic shading goggles according to the present invention, and  FIG. 5  is a rear exploded perspective view illustrating mask removable type automatic shading goggles according to the present invention. 
     Referring to the drawings, the mask removable type automatic shading goggles according to the present invention includes a goggle part  200  having a LCD lens  60  for blocking a harmful light and protecting a worker&#39;s eye installed on an inside thereof and adhered and worn to a worker&#39;s face; and a mask part  100  having a cover body  110  corresponded to a front surface of the goggle part  200  and attachably and detachably coupled to the front surface of the goggle part  200  and a face protective cover  120  for protecting a worker&#39;s face extended to a lower portion of the cover body  110 . 
     The goggle part  200  includes an inside body  10  corresponded to a flection of the worker&#39;s face and a pair of first extending side walls  12  extended from both sides thereof to the rear thereof; a light detecting sensor  70  formed at one side of the inside body  10  and detecting a light and generating a driving signal when the light more than a previous set value is generated; a control panel  80  formed on one first extending side wall  12 ; a power supply  90  formed on the other first extending side wall  12 ; a front body  20  coupled to a front surface of the inside body  10 ; a skirt part  30  of a soft material coupled to a rear surface of the inside body  10  and adhered to the worker&#39;s face; a fixing member  40  coupled to both side ends of the inside body  10  and fixed to a head part of the worker; and the LCD lens  60  interposed between the inside body  10  and the front body  20 . 
     The inside body  10  includes a pair of first openings  11  in front and a pair of first extending side walls  12  extended from both sides thereof to the rear thereof. The inside body  10  serves to provide an installation space of the LCD lens  60 , the control panel  80 , and the power supply  90 . 
     Also, the inside body  10  includes a plurality of fixing pieces  13  corresponded to an outer circumference of the LCD lens  60  for covering the pair of first openings  11  formed on the front thereof and protruded from one side to the front portion thereof. 
     The fixing piece  13  is formed at one side of the front surface of the inside body  10 . The fixing piece  13  serves to support one side of the outer circumference of the LCD lens  60  and allow the LCD lens  60  to be arranged on the front portion of the inside body  10 . 
     Moreover, the inside body  10  further includes a plurality of coupling pillars  14  coupled to the front body  20  and extended from one side of an outside surface of the first extending side walls  12  to the front thereof and a plurality of coupling holes  15  formed on one side of the front portion thereof and coupled to the following skirt part  30  by means of a screw. 
     The front body  20  includes a pair of second openings  21  corresponding to the first openings  11  in front and a pair of second extending side walls  22  extended from both sides thereof to the rear thereof and corresponded to the pair of the first extending side walls  12  respectively and first exposure holes  23  formed on one side of the pair of the second extending side walls  22  so as to expose a cover of the control panel  80  and a cover of the power supply  90  to outside. 
     The front body  20  includes a coupling recess  24  formed between the pair of the second openings  21  and coupled to a coupling protrusion  51   a  of the following protective lens fastener  51 . 
     The above front body  20  serves to form an external shape in general and provide an installation space of a protective lens  50  so as to install the protective lens  50  therein. 
     Also, the front body  20  further includes ventilation parts  25  formed on one side thereof so as to allow the internal air of the front body to be circulated. 
     More concretely, at least one air vent  25   a  is formed on an upper part and a lower part of the front body or one side of the second extending side walls  22  so as to allow the air to be circulated to the inside and outside of the front body  20  through the air vents  25   a , thereby it can previously prevent the condensation from being occurred on the following LCD lens  60  owing to the heat generated from an eyeball of the worker. 
     The pair of the LCD lens  60  having a plate shape is arranged on the front surface of the inside body  10  and the outer circumference of the LCD lens  60  is supported by the plurality of the fixing pieces  13 . Here, where the front body  20  is coupled to the inside body  10 , the outer circumference area of the front surface of the LCD lens  60  is supported by and fixed to one side of the inner surface of the front body  20 . 
     The light detecting sensor  70  is formed at the control panel  80  and the power supply  90  one by one. The light detecting sensor  70  serves to detect a light generated from outside and generate a driving signal. 
     The control panel  80  includes a control printed circuit board  81  electrically connected to the LCD lens  60  and the light detecting sensor  70 , a first cover  82  for covering the control printed circuit board  81  coupled to one side of the inside body  10  corresponding to the control printed circuit board  81 , a shading degree adjusting part  83  having one end portion exposed to outside and another end portion electrically contacted to one side of the control printed circuit board  81 , so that the shading degree of the LCD lens  60  can be controlled. 
     Here, the control printed circuit board  81  receives the driving signal from the light detecting sensor  70  and supplies the voltage to the LCD lens  60 , so that the LCD lens  60  can be driven in the security mode or the welding mode. 
     The power supply  90  includes a power printed circuit board  91  electrically connected to the LCD lens  60  and the control printed circuit board  81  to supply the power thereto, a battery  92  contacted to the power printed circuit board  91 , a light emitting diode  93  formed on one side of the inside body  10 , and a second cover  94  for covering the power printed circuit board  91  coupled to one side of the inside body  10  corresponding to the power printed circuit board  91 . The power supply  90  serves to supply the power to the LCD lens  60  and the control printed circuit board  81  and detect the voltage of the battery below the pre-set voltage value to display a low voltage through the light emitting diode  93 . 
     Also, the power supply  90  includes a power button for turning on or turning off the power. 
     An electrical connection panel  95  is electrically connected to one side of the power supply  90  and electrically connected to one side of the control panel. The electrical connection panel  95  is longitudinally formed on the upper end portion of the inside body  10 . Accordingly, the power is supplied to the LCD lens  60  and the control panel  80  by means of the electrical connection panel  95 . In this case, when the power is supplied by a common power supply line, the power supply line can be disconnected owing to the movement thereof. However, in the present invention, it can prevent the cutoff of the power supply in the LCD lens  60  and the control panel  80  by means of the electrical connection panel  95 . 
     Also, the electrical connection panel  95  allows the LCD lens  60  and the control panel  80  to be electrically connected, so that it can prevent a malfunction due to a noise of a sense line. 
     Moreover, the electrical connection panel  95 , which is longitudinally installed thereon, may be a typical PCB or a flexible PCB according to circumstances. 
     Furthermore, the control panel  80  and the power supply  90  are exposed to outside through the first exposure holes  23 , the cover of the control panel  80  and the cover of the power supply  90 , so that the component parts of the control panel  80  and the power supply  90  can be easily changed or repaired. 
     Also, the operating switch of the control panel  80  and the power supply  90  are exposed to outside through the first exposure holes  23  as described above, or exposed to the upper portion of the second extending side walls  22  of the front body  20 , so that the worker can easily manipulated. 
     The skirt part  30  made of a soft silicon includes a tightly contacting part  31  corresponding to an outer circumference shape of the rear surface of the inside body  10 , a coupling part  32  corresponded to the inner surface of the inside body  10  and protruded from the front surface of the tightly contacting part  31  toward the front part thereof, a curve supporting surface  33  having openings  30   a  corresponded to the LCD lens  60  at the front surface of the coupling part  32 , and extended along an outer circumference of the openings and bent and bordered on coupling part  32 , and a supporting plate  34  corresponded to the curve supporting surface  33  and closely coupled to the inside of the curve supporting surface  33 . 
     Accordingly, the supporting plate  34  is bordered on the inside surface of the curve supporting surface  33  and the screw holes are continuously penetrated through the inside surface of the supporting plate  34 , the curve supporting surface  33 , and the inside body  10 , so that the supporting plate  34  is screw-coupled to the inside surface of the inside body  10 . 
     The above skirt part  30  made of the soft silicon can be block the harmful light or fumes etc. Also, the above skirt part  30  is adhered to the worker&#39;s face, thereby improving the cushion function and the wearing sensation. Since the skirt part  30  is coupled to the inside body by means of the supporting plate  34 , the replacement thereof is easy. 
     The fixing member  40  includes a pair of hooks  41  coupled to both side surfaces of the inside body  10  respectively and a band part  42  of an elastic material having both end parts coupled to the pair of hooks  41  respectively. The band part  42  is fixed to the head of the worker, so that the rear surface of the skirt part  30  can be adhered to the face of the worker. 
     The mask part  100  includes a cover body  110  attachably and detachably coupled to the front body  20  and a face protecting cover  120  extended to a lower portion of the cover body  110 . 
     The cover body  110  corresponding to the front body  20  includes a pair of third openings  111  corresponding to the second openings  21  in front and a pair of locking walls  113  as an extending side wall extended from both sides thereof to the rear thereof, and second exposure holes  112  corresponded to the first exposure holes  23  so as to expose the control panel  80  and the power supply  90  to outside. The pair of locking walls are provided as an extending side wall extended from both sides of the cover body to the rear of the cover body and having exposure holes for exposing both side surfaces of the goggle part to outside of the mask removable automatic shading goggles, so that, when the mask part is coupled to the goggle part, the pair of locking walls is slid to both sides of the goggle part while being opened to outside of the mask removable automatic shading goggles, whereby the pair of locking walls is elastically coupled to both sides of the goggle part. 
     In the drawings, when the mask part  100  is coupled to the goggle part  200 , the pair of locking walls  113  is slid to the rear of the goggle part  200  while being bordered on both sides the goggle part  200  and being opened to outside and the control panel  80  and the power supply  90 , which is formed at both sides of the goggle part  200  are exposed to outside through the second exposure holes  112 . That is, the pair of locking walls  113  is elastically coupled to both sides of the goggle part  200 . 
     As described above, the control panel  80  and the power supply  90  are exposed to outside through the second exposure holes  112 . However, additionally, a battery cover or a cover of the control panel can be coupled to both sides of the goggle part  200 . That is, these covers are exposed to outside through the second exposure holes  112  while the pair of locking walls  113  is coupled to both sides of the goggle part  200 . 
     The face protecting cover  120  serves to cover the lower portion of the worker&#39;s eyeball. Also, the face protecting cover  120  is integrally and detachably coupled to the cover body  110 . 
     Also, the mask part  100  further includes a supporting jaw  130  having a surface bent between the cover body  110  and the face protecting cover  120  and closely supporting an upper end or a lower end of the front body  20  thereon. The supporting jaw  130  serves to increase the adhesive force between the mask part  100  and the front body  20  and block the harmful light, which can be flowed from the lower end of the front body  20 . 
     Moreover, the mask part  100  further includes a hooking part  140  extended from one side of the upper end thereof toward the upper end of the goggle part  200  and coupled and attached to the upper end portion of the goggle part  200 . 
     More concretely, the hooking part  140  is protruded from the upper end of the cover body  110  to the rear thereof and includes an end portion, which is bent downward, is inserted into and coupled to the upper end of the goggle part  200 . 
     The protective lens  50  is made of a transparent material and formed at one side of the front surface of the front body  20  so as to block the second openings  21  and the third openings  111 , so that it can previously prevent the following LCD lens  60  from being damaged owing to the broken pieces generated during welding. 
     The above protective lens  50  includes the protective lens fastener  51  having the coupling protrusion  51   a  formed on one side thereof. One side of the protective lens fastener  51  is penetrated therethrough. The coupling protrusion  51   a  of the following protective lens fastener  51  is coupled to the coupling recess  24  of the front body  20 , so that it can be strongly fixed to the front body  20 . 
     Hereinafter, the method and operation of the mask removable type automatic shading goggles according to the present invention will be described. 
     In the mask removable type automatic shading goggles according to the present invention, since the mask part  100  having the face protecting cover  120  can be attachably and detachably coupled to the goggle part  200 , the worker can wear only the goggle part  200  so as to conducting the welding work. Also, as occasion demands, the cover body is coupled to the front body  20 , so that it can protect the worker&#39;s face by means of the face protecting cover  120 . 
     At this time, the cover body  110  of the mask part is fixed to the front body  20  of the goggle part  200  by means of the supporting jaw  130  of closely supporting the upper and lower ends of the goggle part  200  thereon. Here, since the cover body  110  is made of elastic material, both sides of the cover body  110  are adhered to the front body  20  through the supporting jaw  130  while being slightly opened to outside. 
     As described above, when the cover body  110  is coupled to the front body  20 , since the supporting jaw  130  formed between the cover body  110  and the face protecting cover  120  is adhered to the lower end of the goggle part  200 , it can prevent the harmful light from being leaked into the inside of the goggle part  200 . Also, it can prevent the frost from being generated on the protective lens  50  installed on the front surface of the cover body  110  owing to the breath spitted by the worker. 
     Also, the bending portion of the hooking part  140  formed on the upper portion of the cover body  110  is inserted into and coupled to the upper end of the goggle part  200 , thereby more increasing the adhesive force between them. 
     Moreover, since the locking walls  113  are further formed at both sides of the cover body  110 , when the mask part  100  is coupled to the goggle part  200 , the locking walls  113  are slid to the rear of the goggle part  200  while being opened to outside, so that they can be elastically coupled to both sides of goggle part  200 . 
     Accordingly, the mask part  100  can be easily attachably and detachably coupled to the goggle part  200  through the supporting jaw  130 , the hooking part  140 , and the locking walls  113 . 
     Also, when the skirt part  30  is coupled to the rear surface of the goggle part  200 , since the skirt part  30  is closely supported thereon, although the worker randomly pulls on the skirt part  30 , the soft skirt part  30  is supported by the supporting plate  34  without being torn. Moreover, the soft skirt part  30  can be easily replaced through the screws later on. 
     Where the worker wears the mask removable type automatic shading goggles according to the present invention and performs the welding operation, if the harmful light (arc) is generated, the light detecting sensor  70  detects the generated harmful light. 
     Then, the driving signal is generated from the light detecting sensor  70  and then, the control printed circuit board  81  receives the driving signal. Thereafter, the voltage is supplied to the LCD lens  60  to be driven in a pre-set shading degree grade. 
     Continuously, the worker adjusts the shading degree according to the intensity of the harmful light of the welding operation, so that the shading degree of the LCD lens  60  is adjusted in the welding mode to perform the welding operation. 
     Here, since the control panel  80  and the power supply  90  installed on both end portions of the goggle part  20  are connected by not the internal power supply line but the electrical connection panel  95  extended to both ends of the goggle part and fixed to the inside body  10 , it can prevent the cutoff of the power supply owing to the movement of the power supply line. 
     Also, the front body  20  further includes ventilation parts  25  protruded toward an upper part and a lower part thereof on the upper and lower surfaces thereof respectively and a plurality of air vents  25   a  formed on one side of the ventilation parts  25  so as to allow the air to be circulated to the inside and outside of the skirt part  30  through the air vents  25   a  during wearing of the automatic shading goggles  1 , thereby it can previously prevent the condensation from being occurred on the following LCD lens  60  owing to the heat generated from an eyeball of the worker. 
     Also, the present invention provides the goggle type, so that the safety helmet, the dust mask, and the earplug essentially required in welding operation can be simultaneously used. 
     While this invention has been described in connection with what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments and the drawings, but, on the contrary, it is intended to cover various modifications and variations within the spirit and scope of the appended claims.