Lighting apparatus
View Patent ↗A lighting apparatus comprises: a board, a plurality of light-emitting units disposed on the board, and a package structure enclosing all of the light-emitting units and having a volume less than 5000 mm 3 . The lighting apparatus has a light intensity greater than 150 lumens.
1. A light-emitting unit, comprising:
a substrate;
a first light-emitting body formed on the substrate and having a first area in a top view and a first side with a first width;
a second light-emitting body formed on the substrate and having a second area in a top view and a second side with a second width and parallel to the first side;
a third light-emitting body formed on the substrate, having a third area in a top view, and electrically connected to the first light-emitting body and the second light-emitting body in series;
a first electrode covering the first light-emitting body;
a second electrode separated from the first electrode, and covering the second light-emitting body and the third light-emitting body; and
a transparent element enclosing the substrate, the first light-emitting body, the second light-emitting body, and the third light-emitting body;
wherein the first width is different from the second width,
wherein 40%˜100% of the first area is covered by the first electrode, 10%˜70% of the second area is covered by the second electrode, and 10%˜70% of the third area is covered by the second electrode.
2. The light-emitting unit according to claim 1 , wherein the first width is larger than the second width.
3. The light-emitting unit according to claim 1 , wherein the third light-emitting body has a third side with a third width, the third side being parallel to the first side and the third width being less than the first width.
4. The light-emitting unit according to claim 3 , wherein the first side overlaps the second side and the third side.
5. The light-emitting unit according to claim 1 , wherein the first light-emitting body is arranged with the second light-emitting body in a first direction.
6. The light-emitting unit according to claim 5 , further comprising a fourth light-emitting body arranged with the first light-emitting body in a second direction substantially perpendicular to the first direction.
7. The light-emitting unit according to claim 6 , wherein the fourth light-emitting body overlaps the first light-emitting body and the third light-emitting body in the second direction.
8. The light-emitting unit according to claim 6 , wherein the fourth light-emitting body has a fourth area in a top view and 40%˜100% of the fourth area is covered by the first electrode.
9. The light-emitting unit according to claim 6 , further comprising a fifth light-emitting body arranged with the fourth light-emitting body in the second direction.
10. The light-emitting unit according to claim 9 , wherein the third light-emitting body overlaps the fourth light-emitting body and the fifth light-emitting body in the second direction.
11. The light-emitting unit according to claim 1 , further comprising a conductive structure electrically connecting the second light-emitting body and the third light-emitting body and having a portion covered by the second electrode.
12. The light-emitting unit according to claim 1 , wherein the second light-emitting body has a portion covered by the first electrode.
13. The light-emitting unit according to claim 1 , wherein the transparent element includes a plurality of phosphor particles.
14. The light-emitting unit according to claim 1 , wherein the first electrode has an area more than 10% and less than 50% of that of the substrate.
15. The light-emitting unit according to claim 1 , wherein the second light-emitting body and the third light-emitting body commonly form a rectangle shape.
16. The light-emitting unit according to claim 1 , wherein the first light-emitting body includes an inclined side surface.
17. A lighting apparatus, comprising:
a board,
a light-emitting unit of claim 1 disposed on the board; and
a cover covering the light-emitting unit and the board.
18. The lighting apparatus according to claim 17 , further comprising an electrical connector electrically connecting to an external power supply for conducting the light-emitting unit.
19. The lighting apparatus according to claim 17 , wherein the cover has an inner chamber in configuration of accommodating the board and the light-emitting unit.