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US 2014/0210378 A1Published application
Lamp
OwnerRoger Lionel David Sparrowinventor
Life of this patent
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Abstract
A lamp powered by batteries 4 has an LED 5 mounted on an emitter plate 51. The lamp has a temperature measuring circuit (20, FIG. 2) and a power management circuit 11 including an integrated circuit (12, FIG. 2) for control of the output of the lamp.
Claims21
A lamp comprising:
- a housing;
- a light emitting device mounted on the housing;
- a battery mounted within the housing;
- means for switching on/off the light emitting device;
- a sensor for sensing the temperature of the light emitting device;
- means for incrementally reducing current to the light emitting device in the event of the temperature of the light emitting device exceeding a threshold.
3 more elements
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Dependencies are inferred from the claim text.