Title:
CIRCULAR CEILING LAMP HAVING ADJUSTABLE LIGHTING LEVEL AND LIGHTING LEVEL ADJUSTMENT METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/090822
Kind Code:
A1
Abstract:
A circular ceiling lamp having an adjustable lighting level and a lighting level adjustment method thereof. The circular ceiling lamp comprises a housing (1) and a shade (17). The housing (1) has a circular structure. The housing (1) and the shade (17) are combined to form a closed ceiling LED lamp structure. Multiple LED bulbs (4) are uniformly arranged at an inner sidewall of the housing (1). A light diffusion plate (14) is provided at the center of a base of the housing (1) for diffusing and adjusting LED light. A light diffusion adjustment device is provided between the light diffusion plate (14) and the base of the housing (1). The light diffusion adjustment device comprises an adjustment sleeve (7) and an adjustment rod (9). The adjustment sleeve (7) is fixed to a bottom surface of the light diffusion plate (14). One end of the adjustment rod (9) is inserted into the adjustment sleeve (7). The other end of the adjustment rod (9) is connected to a connection column (8) at the base of the housing (1). An adjustment protrusion (11) is provided at the adjustment sleeve (7). The base of the housing (1) is connected to the ceiling by means of a tightening screw (5). A horizontal included angle between the light diffusion plate (14) and the LED bulb (4) can be adjusted to change a refraction angle of the light diffusion plate (14), thereby reducing wear of the LED bulb, and extending service life of the LED bulb (4).
Inventors:
SANG YONGSHU (CN)
LI YUNHE (CN)
LIU JUN
YE BING
LI YUNHE (CN)
LIU JUN
YE BING
Application Number:
PCT/CN2017/112223
Publication Date:
May 16, 2019
Filing Date:
November 22, 2017
Export Citation:
Assignee:
ANHUI SHILIN LIGHTING CO LTD (CN)
International Classes:
F21V13/06
Foreign References:
| CN103712140A | 2014-04-09 | |||
| CN103712154A | 2014-04-09 | |||
| CN101118042A | 2008-02-06 | |||
| CN103411142A | 2013-11-27 | |||
| EP0648972B1 | 1999-01-07 |
Attorney, Agent or Firm:
LIUAN ZHONGXIN INTELLECTUAL PROPERTY AGENT FIRM (GENERAL PARTNERSHIP) (CN)
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