US 11,913,633 B2
Power tool, light unit, and floodlight
Makoto Chikaraishi, Anjo (JP); Akihiro Hozumi, Anjo (JP); and Kazunori Kinoshita, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Mar. 31, 2023, as Appl. No. 18/193,699.
Claims priority of application No. 2022-078036 (JP), filed on May 11, 2022.
Prior Publication US 2023/0366533 A1, Nov. 16, 2023
Int. Cl. F21V 33/00 (2006.01); B25F 5/02 (2006.01); F21V 29/10 (2015.01); H01L 33/64 (2010.01); F21Y 115/10 (2016.01); F21W 131/10 (2006.01)
CPC F21V 33/0084 (2013.01) [B25F 5/02 (2013.01); F21V 29/10 (2015.01); H01L 33/641 (2013.01); F21W 2131/10 (2013.01); F21Y 2115/10 (2016.08)] 22 Claims
OG exemplary drawing
 
1. A power tool comprising:
a motor;
an output shaft that (i) is configured to be rotated by a rotational force of the motor and (ii) has a longitudinal axis in a front-rear direction;
a chip-on-board light emitting diode radially around the output shaft;
a heat insulating material (i) directly on at least a part of a periphery of the chip-on-board light emitting diode and (ii) configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less; and
a heating source that is (i) a component of the power tool and (ii) heated by use of the power tool,
wherein the heat insulating material is directly between the heating source and the chip-on-board light emitting diode in the front-rear direction.