A light emitting circuit includes: a first circuit H1 in which is provided
a main light source 5, 6; and a second circuit H2 connected in parallel
with the first circuit H1 and in which is provided an auxiliary light source
1, 2 and 3; wherein a drain (D) and a source (S) of an field effect
transistor 4 are connected in the second circuit H2, and a gate (G)
of the field effect transistor 4 is connected to the first circuit H1.
