Patent ID: 7767935

Claim:
A battery powered lighter comprising: a thin flat case; a sheet type battery provided within the flat case; a resistance wire heating element connected to the sheet type battery; and a power switch for opening and closing the connection between the sheet type battery and the resistance wire heating element; wherein the flat case comprises: an ignition window, open at a position where the heating element faces; a slide member having a first position and a second position; and an operating button for operation of the power switch; whereas the operating button is depressed, a terminal plate contacts an electrode, to establish an electrical connection between the sheet type battery and the heating element, and as the operating button is released, the terminal plate is separated from the electrode due to the elasticity of the operating button in the direction toward which it protrudes, a lock portion integral with the slide member interposed between the terminal plate and the electrode when the slide member is in the position at which it closes the ignition window; a first portion of the slide member covers the ignition window when the slide member is in the first position; and a second portion of the slide member slides between the terminal plate and the electrode, thereby preventing the operation of the power switch when the slide member is in the first position.