Title:
LED FILAMENT
Document Type and Number:
WIPO Patent Application WO/2018/014442
Kind Code:
A1
Abstract:
Disclosed is an LED filament (1) provided in a light bulb (3). The LED filament (1) comprises: a flexible circuit board (10); and several chips distributed on the flexible circuit board (10), wherein a fluorescent powder is coated on each chip, the chips driving the fluorescent powder to emit light. By using a specific flexible circuit board (10), and attaching chips and fluorescent powder to the flexible circuit board (10) to form a flexible LED filament (1), the formed LED filament (1) can be arranged in a light bulb (3) in any specific shape, solving the problem of light emitted from an LED filament lamp not being uniform and light distribution such that the formed LED filament lamp realises 360° light emission without a cut-off angle, and uniform light emission.
Inventors:
ZHENG JUNTAO (CN)
Application Number:
PCT/CN2016/098914
Publication Date:
January 25, 2018
Filing Date:
September 13, 2016
Export Citation:
Assignee:
SHANGHAI DANGOO ELECTRONICS CO LTD (CN)
International Classes:
F21K9/20; F21Y115/10
Foreign References:
| CN104465638A | 2015-03-25 | |||
| CN202252991U | 2012-05-30 | |||
| CN105546488A | 2016-05-04 | |||
| EP2236907A2 | 2010-10-06 | |||
| US20040007981A1 | 2004-01-15 |
Attorney, Agent or Firm:
SHANGHAI SHENXIN LAW FIRM (CN)
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