Patent ID: 8035761

Claim:
A shading device for a welding helmet comprising: a first frame comprising a first body with an upper end portion and an upper surface having side portions, said first body having an LCD module having an LCD window with two opposite sides and an upper surface and a contacting portion formed at each of said opposite sides of said LCD window and a first joint portion formed at said upper end portion of said first body, and wherein said first frame has a first joint portion comprising a guide portion formed adjacent to said upper surface of said first body and a plurality of latching end portions formed at one of said side portions of said upper surface of said first body; a second frame comprising a second body having a lower end portion, a lower surface and an upper portion, a power supplying portion and a circuit portion and a second joint portion attachable and deattachable to said first joint portion of said first frame at one end portion thereof and wherein said second joint portion comprises an insertion end portion integrally formed at a lower end portion of said second body and insertable along said guide portion of said first frame for attaching and deattachinq; a pair of electrodes each having two end portions, one end portion thereof being disposed to electrically contact said contacting portions and the other end portion thereof being disposed on said upper surface of said first frame; an electrically conductive means for electrically connecting said power supplying portion with said electrodes formed on said lower surface of said second frame; and an insertion member comprising a third body having two ends, located at said upper surface of said LCD window, a plurality of insertion holes corresponding to the plurality of said latching end portions of said first frame, and electrode grooves formed at both ends of said third body, and said pair of electrodes each having two end portions, wherein one end portion thereof being disposed to electrically contact with said contacting portions and the other end portion thereof being insertable and fixable into said electrode grooves.