LAMP AND ILLUMINATION APPARATUS

摘要

An LED lamp is used being connected to an external switch for performing an ON-OFF operation. The LED lamp, when causing a light emitting module to emit light in a first lighting mode, controls a power supply circuit to cause the light emitting module to emit light at a first brightness for a predetermined time period from when a timer circuit is activated, and to cause the light emitting module to emit light at a second brightness lower than the first brightness, after passage of the predetermined time period. The LED lamp, when causing the light emitting module to emit light in a second lighting mode, controls the power supply circuit to cause the light emitting module to continue to emit light at the first brightness irrespective of a state of the timer circuit.

主权项

1. An LED (Light Emitting Diode) lamp to be connected to an external switch for performing an ON-OFF operation, the LED lamp comprising:
a light emitting module; a power supply circuit which supplies a current to the light emitting module; a control circuit which determines whether to cause the light emitting module to emit light in a first lighting mode or to cause the light emitting module to emit light in a second lighting mode, based on the ON-OFF operation performed by the external switch, and controls the power supply circuit; and a timer circuit which is activated in an early stage of the first lighting mode, wherein the control circuit, (i) in the first lighting mode, controls the power supply circuit to cause the light emitting module to emit light at a first brightness for a predetermined time period from when the timer circuit is activated, and to cause the light emitting module to emit light at a second brightness after passage of the predetermined time period, and (ii) in the second lighting mode, controls the power supply circuit to cause the light emitting module to continue to emit light at the first brightness irrespective of a state of the timer circuit, the second brightness being lower than the first brightness.