US 11,940,143 B2
Power tool
Makoto Chikaraishi, Anjo (JP); Akihiro Hozumi, Anjo (JP); and Yutaka Ogiso, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Apr. 5, 2023, as Appl. No. 18/295,868.
Claims priority of application No. 2022-078089 (JP), filed on May 11, 2022.
Prior Publication US 2023/0366535 A1, Nov. 16, 2023
Int. Cl. F21V 33/00 (2006.01); B25B 21/02 (2006.01); B25B 23/18 (2006.01); B25F 5/00 (2006.01); H05B 47/105 (2020.01); H05B 47/155 (2020.01)
CPC F21V 33/0084 (2013.01) [B25B 21/02 (2013.01); B25B 23/18 (2013.01); B25F 5/001 (2013.01); H05B 47/105 (2020.01); H05B 47/155 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power tool comprising:
a motor;
an output shaft that is rotated by a rotational force of the motor;
a chip-on-board light emitting diode disposed around the output shaft, the chip-on-board light emitting diode including: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion; and
a light cover fixed to the substrate, the light cover including: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes, wherein
the inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.