To provide a vehicular power converter with high reliability by effectively radiating heat generated in a power circuit section and control circuit section without using a cooling fan. The impulse radio signal is cross correlated with the decode signal to output a baseband signal. The fastening strips are occluded and deoccluded by moving the first fastening strip relative to the second fastening strip in substantially the vertical Z axis. This compound may also be used for the treatment or prevention of obesity. The backlight unit includes a light source emitting light; and optical fiber surrounding the circumference of the light source so as to concentrate and emit the light emitted from the light source. Said holes comprise a first set of holes at a first radial distance from the rotation axis and a second set of holes at a second radial distance from the rotation axis, greater than the first radial distance.