Light-emitting bulb

Patent metadata

Field	Value
Publication number	US-2016290622-A1
Application number	US-201514676088-A
Country	US
Kind code	A1
Filing date	Apr 1, 2015
Priority date	Apr 1, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

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.

First claim

What is claimed is:

1 . A light-emitting bulb comprising:
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.

2 . The light-emitting bulb of claim 1 , wherein an area ratio of the second opening to the second cover is in a range of 0.1˜0.9.

3 . The light-emitting bulb of claim 1 , wherein the second opening is elongated.

4 . The light-emitting bulb of claim 1 , further comprising a top portion, the second opening extending from the top portion to the bottom end.

5 . The light-emitting bulb of claim 1 , wherein the second cover further comprises a plurality of ribs with first ends connected to each other.

6 . The light-emitting bulb of claim 5 , wherein two of the plurality of ribs are separated from each other by the second opening.

7 . The light-emitting bulb of claim 1 , wherein the first cover has a hardness less than that of the second cover.

8 . The light-emitting bulb of claim 1 , wherein the first cover comprises glass, diamond, epoxy, quartz, acrylic resin, SiO x , Al 2 O 3 , ZnO, or silicone.

9 . The light-emitting bulb of claim 1 , wherein the second cover comprises polypropylene, polybutylene terephthalate, poly(methyl methacrylate), tempered glass.

10 . The light-emitting bulb of claim 1 , further comprising a shield structure configured to optionally shield the second opening.

11 . The light-emitting bulb of claim 1 , further comprising a board on which the first light-emitting device is arranged in a first inclined angle.

12 . The light-emitting bulb of claim 11 , further comprising a second light-emitting device arranged on the board in a second inclined angle, the second inclined angle being different from the first inclined angle.

13 . The light-emitting bulb of claim 1 , further comprising a board and a second light-emitting device, wherein the first light-emitting device and the second light-emitting device are inclined in the board toward opposite directions.

14 . The light-emitting bulb of claim 1 , wherein the first light-emitting unit comprises an electrode plate exposed out of an open end of the first cover.

15 . The light-emitting bulb of claim 11 , wherein the first cover comprises a closed end opposite to the open end.

16 . The light-emitting bulb of claim 1 , wherein the first light-emitting unit comprises a light-emitting diode, and a first transparent structure enclosing the light-emitting diode

17 . The light-emitting bulb of claim 16 , wherein the first light-emitting unit further comprises a second transparent structure formed on the first transparent structure.

Assignees

• Epistar Corp

Inventors

• Hu Wei-Chiang
• Yao Chiu-Lin

Classifications

• F21K9/66

  Details of globes or covers forming part of the light source · CPC title

• F21K9/232

  specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb · CPC title

• F21V3/06

  characterised by the material · CPC title

• F21V29/83 Primary

  the elements having apertures, ducts or channels, e.g. heat radiation holes · CPC title

• F21K9/238

  Arrangement or mounting of circuit elements integrated in the light source · CPC title