Title:
LOW-NOISE RESET CONTROL SYSTEM FOR LAMP
Document Type and Number:
WIPO Patent Application WO/2022/142300
Kind Code:
A1
Abstract:
A low-noise reset control system for a lamp. The system comprises a support member, a pivoting member and a driver (200); the pivoting member comprises a light source, a limiting portion (510) is arranged on the pivoting member, and a blocking portion (520) matching the limiting portion to limit a rotation angle of the pivoting member is arranged on the support member; the system further comprises an angle detector used for sensing the rotation angle of the support member, and an angle indicator used for sending an indication signal when the pivoting member is located at a specific angle position; in a lamp reset process, when the pivoting member rotates forwards to the position where the limiting portion (510) is limited by the blocking portion (520), the driver (200) brakes immediately, the limiting portion (510) is prevented from repeatedly colliding with the blocking portion (520) and making noise, and after the pivoting member is driven to rotate reversely at a certain angle at a low speed, a transmission member is loosened and vibration of the pivoting member is completely eliminated, such that inaccurate positioning for searching for a relative initial position is avoided, and then the speed is increased to continuously drive the pivoting member reversely to rotate to search for the relative initial position.
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Inventors:
JIANG WEIKAI (CN)
Application Number:
PCT/CN2021/108662
Publication Date:
July 07, 2022
Filing Date:
July 27, 2021
Export Citation:
Assignee:
GUANGZHOU HAOYANG ELECTRONICS CO LTD (CN)
International Classes:
F21V14/02; F21V21/15; F21V21/26; F21W131/406
Foreign References:
| CN112648588A | 2021-04-13 | |||
| CN111594808A | 2020-08-28 | |||
| CN212029431U | 2020-11-27 | |||
| CN101178533A | 2008-05-14 | |||
| CN207334386U | 2018-05-08 | |||
| CN207179373U | 2018-04-03 | |||
| US20090251905A1 | 2009-10-08 | |||
| EP2711624A1 | 2014-03-26 |
Attorney, Agent or Firm:
GUANGZHOU RUNHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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