Patent Number: 8,816,608

Title: Power supply device, luminaire and power source system

Abstract: According to one embodiment, a luminaire includes a lighting circuit configured to light a light source with a power supply from the outside, an accumulated-lighting-time storing section configured to store accumulated lighting time of the light source, and a control circuit configured to control the lighting circuit in a set mode. The control circuit sets, if a pattern for turning on and off the power supply from the outside is a predetermined initial illuminance correction setting pattern, a mode in an initial illuminance correction mode for performing initial illuminance correction corresponding to the accumulated lighting time of the light source. The control circuit sets, if the pattern for turning on and off the power supply from the outside is a predetermined normal setting pattern, the mode in a normal mode for not performing the initial illuminance correction.

Inventors: Terasaka; Hiroshi (Yokosuka, JP), Sasai; Toshihiko (Yokosuka, JP), Iwai; Naoko (Yokosuka, JP)

Assignee: Toshiba Lighting & Technology Corporation

International Classification: G06F 1/00 (20060101); H05B 37/02 (20060101); H05B 39/04 (20060101); H05B 41/36 (20060101)

Expiration Date: 8/26/12018