US 11,057,971 B2
Chip-on-board illuminating device
Changhe Zhong, Xiamen (CN); Digen Shen, Xiamen (CN); Jingjing Su, Xiamen (CN); Xiaoping Zhu, Xiamen (CN); and Zhongkai Chen, Xiamen (CN)
Assigned to XIAMEN ECO LIGHTING CO. LTD., Xiamen (CN)
Filed by XIAMEN ECO LIGHTING CO. LTD., Xiamen (CN)
Filed on Feb. 20, 2020, as Appl. No. 16/795,585.
Claims priority of application No. 201910169282.0 (CN), filed on Mar. 6, 2019.
Prior Publication US 2020/0288551 A1, Sep. 10, 2020
Int. Cl. H05B 45/345 (2020.01); H05B 45/14 (2020.01); F21V 33/00 (2006.01); F21L 4/02 (2006.01); F21Y 105/10 (2016.01); F21Y 115/10 (2016.01)
CPC H05B 45/345 (2020.01) [F21L 4/027 (2013.01); F21V 33/0008 (2013.01); H05B 45/14 (2020.01); F21Y 2105/10 (2016.08); F21Y 2115/10 (2016.08)] 16 Claims
OG exemplary drawing
 
1. A chip-on-board (COB) illuminating device, comprising:
a light source component, comprising:
a plurality of illuminating sets, which are electrically coupled in series;
a control module, comprising:
a plurality of control terminals, respectively and electrically coupled to intersections between the plurality of illuminating sets;
an input control terminal, electrically coupled to a head illuminating set of the plurality of illuminating sets;
an output control terminal, electrically coupled to a tail illuminating set of the plurality of illuminating sets; and
a constant current control unit, electrically coupled to the plurality of control terminals, the input control terminal and the output control terminal, and configured to activate a dynamic number of illuminating sets out of the plurality of illuminating sets starting from the head illuminating set, and the dynamic number is directly proportional to a voltage level of an input voltage received by the constant current control unit; and
a base plate component, comprising:
a base plate, configured to load both the light source component and the constant current control unit; and
an insulating package, loaded on the base plate and configured to cover the light source component, wherein each of the plurality of illuminating set comprises a plurality of illuminating units that are electrically coupled in series, wherein each of the plurality of illuminating set further comprises a diode that is electrically coupled to a head of the plurality of illuminating units in series.