Disclosed is an organic electroluminescent device which is improved in luminous efficiency, sufficiently secures driving stability, and has a simple configuration. The screw cap has a head plate with a cylindrical lateral cap surface and wherein the tamperproof band has a flexible band and is connected to the lower periphery of the lateral cap surface via one or more easy-tear elements. An extension member is removably connectable to the rotatable member for imparting torque thereto when rotated. According to the invention, pins are arranged in cross direction to the mesh surface, and the at least one wire section is arranged so as to pass by the pins and ends of the at least one wire section are attached to the mesh jewel, wherein the pins are fitted with structure for preventing displacement in an axial direction of the pins of the wire section parts adjoining the pins.