Illuminating device
AssigneeToshiba Lighting & Technology Corporation
InventorsHirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
Life of this patent
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Abstract
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.
Claims2
An illuminating device comprising:
- a housing common to and configured to house a plurality of types of light emitting modules;
- a light emitting module having a respective light source and a resistor indicative of a type of the light emitting module;
- a discriminating unit configured to discriminate the type of the light emitting module based on a voltage generated by the resistor;
- and
- a power supply configured to vary an output current according to the type of the light emitting module discriminated by the discriminating unit.
A method for controlling an illuminating device comprising:
- discriminating a type of a light emitting module based on a voltage generated by a resistor of the light emitting module of the illuminating device, the illuminating device having a housing common to and configured to house a plurality of types of light emitting modules, the light emitting module having a respective light source and a resistor indicative of the type of the light emitting module;
- and
- adjusting an output current from a power supply according to the discriminated type of the light emitting module.
Dependencies are inferred from the claim text.