Abstract: In order to provide a gas lighter which, by causing a flame burning out from a flame hole to emerge as a wide and flat one, combusts a fuel gas while the flame wraps all around the leading end of a cigarette or cigar, the gas lighter includes at least a mixing conduit which mixes the fuel gas jetted out from a gas tank with air, a diffuser connected to the upper portion of the mixing conduit, a combustion cylinder which, being provided so as to surround the diffuser, causes the fuel gas to combust stably, and a windshield member which, being disposed above the combustion cylinder, is provided with a flame hole, wherein at least an opening in the upper portion of the combustion cylinder is formed in an elliptical shape, and the flame hole is formed in a slit shape.

Abstract: To provide a tightly covered lighter protected from entering of sand, dust or the like into an internal combustion mechanism or the like in a lighter body, and can be used even in river, sea, rain, or highland, a windshield formed on a top of the lighter body, an ignition operator formed adjacently to the windshield, and a dome-shaped cap covering tops of the ignition operator and the windshield in an openable and closable manner are provided. A cover covers a top and/or a bottom of the lighter body in a watertight or airtight manner, and a clip is protrusively arranged on the cover or the lighter body.