<p>PURPOSE: A relay light emitting device is provided to obtain stability of a light emitting operation by operating a DC LED chip using the DC power only when the AC power is trouble. CONSTITUTION: A first electric circuit connects the AC power and an AC LED chip(22). A second electric circuit connects the DC power and a DC LED chip(32). The AC LED chip and the DC LED chip are embedded in a package(10). A relay switch(50) activates one of first and second electric circuits.</p>
