Lamps and bulbs are disclosed generally comprising different combinations and arrangement of a light source, one or more wavelength conversion materials, regions or layers which are positioned separately or remotely with respect to the light source, and a separate diffusing layer. Also, a lithium battery utilizes the polymer electrolyte. A second voltage is generated, the second voltage being generated by a voltage regulator. A catch projects from said sleeve piece in the direction of the wall plane which, in the locked position, extends beyond the outer surface of the guide piece as far as the rear surface of the second thin wall and rests thereon. The electrode structure of the LED includes a cluster of reflectors disposed along the pattern on the light emitting stacked structure, and a pad material layer formed to entirely cover the reflectors.