Patent attributes
A straight tube LED lamp according to one aspect of the present invention includes: a first LED array including first LED elements connected in series; a second LED array that includes second LED elements connected in series, and emits light having a different emission color from an emission color of the first LED array; a FET switch provided in a path through which current flows to the second LED array; and a constant power output circuit that outputs power without changing a total value of the power, wherein the number of the first LED elements connected in series is greater than the number of the second LED elements connected in series, a total forward voltage of the first LED array is greater than a total forward voltage of the second LED array, and the first LED elements are in alignment with the second LED elements.
