Lighting device with improved luminous performance

A lighting device with improved luminous performance, comprising:

• a first light path, comprising a plurality of first bending portions and a plurality of second bending portions, wherein the first bending portions and the second bending portions are arranged in staggered arrangement, and each of the first bending portions protrudes from one side of a first reference line and each of the second bending portions protrudes from the other side of the first reference line;
• a plurality of first light sources, distributed over the second bending portions;
• a second light path, connected to the first light path in parallel, and comprising a plurality of third bending portions and a plurality of fourth bending portions, wherein the third bending portions and the fourth bending portions are arranged in the staggered arrangement, and each of the third bending portions protrudes from one side of a second reference line and each of the fourth bending portions protrudes from the other side of the second reference line;
• and
• a plurality of second light sources, distributed over the third bending portions;
• wherein the first bending portions are corresponding to the third bending portions respectively, and a length difference between any one of the first bending portion and the third bending portion corresponding thereto is less than a length of the third bending portion, wherein the second bending portions are corresponding to the fourth bending portions respectively, and a length difference between any one of the fourth bending portion and the second bending portion corresponding thereto is less than a length of the second bending portion, whereby a total impedance of the first light path is substantially equal to a total impedance of the second light path.