ENERGY-SAVING CONTROL METHOD OF LIGHT EMITTING MODULE

摘要

PROBLEM TO BE SOLVED: To provide a method of achieving energy saving by controlling a light emitter by afterimage effect of a human eye.

SOLUTION: Output signals of high-frequency and low-frequency currents divided on a time period basis are provided by arranging an exchange control circuit in a control circuit of a light emitting module; the signals are output by dividing a unit time t; currents different in output efficiency are output by a high-efficiency output circuit corresponding to the exchange control circuit; the light emitting module is made to emit light by controlling current by an intermittent method of respectively supplying a normal current for a certain period and an energy-saving current for a certain period; and a frequency for the light emitting module to emit light by receiving the normal current is set to 16 times/sec or more.

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