An auto-darkening welding helmet comprises a helmet casing(20), an auto-darkening filter (40) installed in the helmet casing (20) anda lighting device (60) installed in the helmet casing, wherein the auto-darkeningfilter (40) includes a liquid crystal panel (41) which is switchable betweena non-opaque state and an opaque state, wherein the lighting device(60) comprises a cable (62) connectable to the auto-darkening filter (40) suchthat when the liquid crystal panel (41) is in the non-opaque state thelightingdevice (60) automatically emits light towards a front of the liquid crystalpanel (41) and when the liquid crystal panel (41) is in the opaque state thelighting device (60) does not automatically emit light.
