Patent ID: 11913633
Assignee: MAKITA CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  B  H | IPC B  F  H

Claim 11:
12. A light unit comprising:
a chip-on-board light emitting diode;
a temperature sensor that detects a temperature of the chip-on-board light emitting diode; and
an LED control circuit configured to (i) determine whether the temperature of the chip-on-board light emitting diode exceeds a predetermined allowable value of the temperature and (ii) reduce an amount of light emitted from an LED chip of the chip-on-board light emitting diode when the LED control circuit determines that the temperature of the chip-on-board light emitting diode exceeds the predetermined allowable value based on detection data of the temperature sensor.