US 11,668,444 B2
Lighting device and vehicle lamp fixture
Yuta Yamaguchi, Tokyo (JP)
Assigned to STANLEY ELECTRIC CO., LTD., Tokyo (JP)
Appl. No. 17/794,564
Filed by Stanley Electric Co., Ltd., Tokyo (JP)
PCT Filed Jan. 19, 2021, PCT No. PCT/JP2021/001624
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/153338, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. JP2020-013890 (JP), filed on Jan. 30, 2020.
Prior Publication US 2023/0080181 A1, Mar. 16, 2023
Int. Cl. F21S 41/176 (2018.01); F21S 41/675 (2018.01); F21V 14/04 (2006.01); F21V 9/30 (2018.01); F21S 41/16 (2018.01)
CPC F21S 41/176 (2018.01) [F21S 41/16 (2018.01); F21S 41/675 (2018.01); F21V 9/30 (2018.02); F21V 14/04 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A lighting device comprising:
a laser light source configured to emit a laser beam;
a wavelength conversion member that includes a laser beam irradiation region to which the laser beam is radiated and that is configured to emit a wavelength converted light excited by radiation of the laser beam;
a laser beam scanning mechanism configured to form a light distribution pattern according to a scanning range of the laser beam by scanning the laser beam radiated to the laser beam irradiation region; and
a projection lens configured to project illumination light that forms the light distribution pattern forward,
wherein an incidence angle of the laser beam, which is scanned by the laser beam scanning mechanism, with respect to the wavelength conversion member is set to an angle where the laser beam does not directly enter the projection lens when the wavelength conversion member is damaged, chipped or fallen off.