Light source device, lighting device, and luminaire

摘要

A control unit of a light source device after activation time is configured to turn on switches respectively connected in series with light sources, in prescribed order. The light source device and a lighting device are configured to transmit characteristics of the light sources, based on a voltage change depending on a pattern of on and off of the switches.

主权项

1. A light source device connectable to an output of a lighting device, comprising:
light sources; switches that are connected in series with the light sources, respectively; and a control unit configured to turn on and off the switches to control and perform identification processing of the light sources, wherein each of the light sources comprises one or more solid light emitting elements, wherein the control unit is configured to turn on and off the switches in a prescribed order depending on characteristics of the light sources, wherein the control unit is configured to output to the lighting device identification information for identifying the characteristics of the light sources, wherein the control unit obtains the identification information by the identification processing as follows:
turning on a first switch of the switches, detecting a first reduction in an output voltage of the lighting device, and storing information regarding the first reduction,turning on a second switch of the switches while the first switch remains on, detecting a second reduction in the output voltage of the lighting device, and storing information regarding the second reduction, andturning off the switches to complete identification processing, wherein the control unit is configured, in the identification processing, to obtain as the characteristics of the light sources a number of the lights sources and at least one of:
rated current values of the light sources,light emission colors of the light sources, andcolor temperatures of the light sources.