Light-emitting bulb
This disclosure discloses a light-emitting bulb. The light-emitting bulb comprises: a first light-emitting device comprising a first light-emitting unit and a first cover covering the light-emitting unit; a second cover comprising a bottom end and a lateral portion surrounding the first light-emitting device; a first opening provided in the bottom end of the second cover; and a second opening provided in the lateral portion of the second cover.
1. A light-emitting apparatus comprising:
a first light-emitting device comprising:
a carrier having a surface;
a light-emitting unit formed on the surface;
an electrode plate formed on the surface; and
a first cover having a hollow space for accommodating the light-emitting unit and the carrier, and not directly contacting the light-emitting unit and the carrier;
a second light-emitting device;
a second cover comprising a lateral opening for light transmission and a chamber for accommodating the first light-emitting device and the second light-emitting device; and
a base associated with the first light-emitting device and the second light-emitting device,
wherein the first light-emitting device and the second light-emitting device are arranged with respect to the base by angles towards different directions and wherein the electrode plate does not extend beyond the carrier in a lengthwise direction.
2. The light-emitting device of claim 1 , wherein the second cover comprises a bottom.
3. The light-emitting device of claim 1 , wherein an area ratio of the second opening to the second cover is in a range of 0.1-0.9.
4. The light-emitting bulb of claim 1 , wherein the second opening is elongated.
5. The light-emitting bulb of claim 1 , wherein the second cover further comprises a plurality of ribs interleaving in the plurality of second openings.
6. The light-emitting bulb of claim 1 , wherein the first cover comprises glass, diamond, epoxy, quartz, acrylic resin, SiOX, Al 2 O 3 , ZnO or silicone.
7. The light-emitting bulb of claim 1 , wherein the second cover comprises polypropylene, polybutylene terephthalate, poly(methyl methacrylate) or tempered glass.
8. The light-emitting bulb of claim 1 , wherein the light-emitting unit comprises a light-emitting element, and a first transparent structure enclosing the light-emitting element.
9. The light-emitting bulb of claim 1 , wherein the first cover comprises an open end and a closed end opposite to the open end.
10. The light-emitting bulb of claim 1 , wherein the first light-emitting device has a color temperature same as that of the light-emitting unit.
11. The light-emitting bulb of claim 1 , wherein the first light-emitting device has a color temperature different from that of the light-emitting unit.
12. The light-emitting bulb of claim 1 , wherein the light-emitting unit comprises a light-emitting element, and a phosphor structure enclosing the light-emitting element.
13. The light-emitting bulb of claim 1 , further comprising a sealing member formed in the hollow space to cover the carrier and the light-emitting unit.
14. The light-emitting device of claim 2 , wherein the first light-emitting device is installed in the second cover through the bottom opening.
15. The light-emitting bulb of claim 2 , wherein the second cover further comprises a top portion, the second opening extending from the top portion to the bottom end.
16. The light-emitting bulb of claim 5 , wherein two of the plurality of ribs are separated from each other by the second opening.
17. The light-emitting bulb of claim 8 , wherein the light-emitting unit further comprises a second transparent structure formed on the first transparent structure.
18. The light-emitting bulb of claim 9 , wherein the carrier is exposed out of the open end.
19. The light-emitting bulb of claim 13 , wherein the sealing member comprises wavelength conversion particles, diffusing particles, or both.