US 12,455,057 B1
LED vehicle lamp with uniform light emission
Dianbo Pan, Zhuhai (CN)
Assigned to ZHUHAI ZHENGYUAN OPTOELECTRONIC TECHNOLOGY CO., LTD., Zhuhai (CN)
Filed by Zhuhai Zhengyuan Optoelectronic Technology Co., Ltd., Zhuhai (CN)
Filed on May 14, 2025, as Appl. No. 19/207,955.
Claims priority of application No. 202411412745.9 (CN), filed on Oct. 11, 2024.
Int. Cl. F21S 41/19 (2018.01); F21S 41/141 (2018.01); F21S 41/24 (2018.01); F21S 43/14 (2018.01); F21S 43/19 (2018.01); F21S 43/235 (2018.01); F21S 43/237 (2018.01); F21S 45/43 (2018.01); F21S 45/48 (2018.01); F21Y 115/10 (2016.01)
CPC F21S 41/24 (2018.01) [F21S 41/141 (2018.01); F21S 41/192 (2018.01); F21S 43/14 (2018.01); F21S 43/195 (2018.01); F21S 43/237 (2018.01); F21S 43/252 (2024.05); F21S 45/43 (2018.01); F21S 45/48 (2018.01); F21Y 2115/10 (2016.08)] 9 Claims
OG exemplary drawing
 
1. An LED vehicle lamp with uniform light emission, comprising:
a substrate, wherein at least one LED chip is arranged on the substrate, a light guide column is arranged on one side of a light emitting surface of the LED chip, a surface of one end of the light guide column far away from the LED chip is a recessed conical surface, and the recessed conical surface is recessed towards the LED chip;
wherein
one end of the light guide column far away from the LED chip is a first end, the first end of the light guide column is a truncated cone, and an included angle between a generatrix of a truncated cone body of the first end of the light guide column and an axis is (5°, 6°];
only a part of the first end of the light guide column is provided with a first electroplated area, and the first electroplated area is arranged close to the LED chip; and
the recessed conical surface is provided with a second electroplated area;
the LED vehicle lamp further comprises a shell, a first through hole is provided in the shell, a part of the first end of the light guide column not provided with the first electroplated area is positioned in the first through hole, and shell parts at two sides of the first through hole are made of light-transmitting materials.