Illuminating device

摘要

To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.

主权项

1. An illuminating device comprising:
a power supply including a pair of output terminals and a control unit and being capable of varying an output current; and one or more light emitting modules, each having a respective light source coupled to and between the output terminals and an information output unit which has a resistor indicative of a type of light emitting module, wherein the control unit is configured to discriminate the type of light emitting modules by detecting a voltage generated by the resistor via the information output unit and to control the output current from the power source according to the discriminated type of light emitting module.