Title:
DIRECT-LIT PANEL LAMP
Document Type and Number:
WIPO Patent Application WO/2019/227636
Kind Code:
A1
Abstract:
A direct-lit panel lamp, comprising an LED lamp bead (1), a lens (2), a light source circuit board (3), and a diffuser plate (4). The lens (2) is fixed right above the LED lamp bead (1), and both the lens (2) and the LED lamp bead (1) are fixed on the light source circuit board (3); the diffuser plate (4) is provided above the lens (2); a concave surface with an opening (5) facing upwards is formed on the top at the center part of the lens (2), and an inner cavity (6) with an opening facing downwards is formed at the bottom; the LED lamp bead (1) is provided right under the inner cavity (6); the included angle of a beam angle in maximum light intensity with an optical axis is 70-80 degrees; the light intensity in the direction of the light axis is not greater than 3% of the maximum light intensity. The direct-lit panel lamp is reasonable in structural design, high in lighting effect, small in thickness, and uniform in light emitting, and achieves an ultrathin design of direct-lit panel lamps, with a thickness of the lamp body being lower than 4 centimeters; the problem about the uniformity of a light emitting surface is solved, and the uniformity reaches 80% or more; the lighting effect is improved, and achieves 100 lm/W.
Inventors:
XU XIANGYANG (CN)
Application Number:
PCT/CN2018/096579
Publication Date:
December 05, 2019
Filing Date:
July 23, 2018
Export Citation:
Assignee:
JIANGSU SUN & MOON LIGHTING CO LTD (CN)
International Classes:
F21V5/04; F21V17/00; G02F1/13357
Foreign References:
| CN101852388A | 2010-10-06 | |||
| CN101639197A | 2010-02-03 | |||
| CN104295993A | 2015-01-21 | |||
| CN103256561A | 2013-08-21 | |||
| CN103032774A | 2013-04-10 | |||
| US20130044484A1 | 2013-02-21 |
Attorney, Agent or Firm:
CHANGZHOU BAIYETENGFEI PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
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