US 12,207,366 B2
Lighting device control device having color temperature adjusting function
Haibo Hong, Fujian (CN); Fuxing Lu, Fujian (CN); and Longyin Chen, Fujian (CN)
Assigned to Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed by Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed on Feb. 23, 2023, as Appl. No. 18/113,050.
Claims priority of application No. 202211355075.2 (CN), filed on Nov. 1, 2022.
Prior Publication US 2024/0147586 A1, May 2, 2024
Int. Cl. H05B 45/00 (2022.01); H05B 45/20 (2020.01)
CPC H05B 45/20 (2020.01) 10 Claims
OG exemplary drawing
 
1. A lighting device control circuit having color temperature adjusting function, comprising an input voltage generating circuit, a color temperature adjusting circuit and an input connector:
the input voltage generating circuit configured to generate an input voltage; the color temperature adjusting circuit performs a color temperature adjusting mechanism to adjust the input voltage with a view to accurately controlling an overall color temperature of a first light source and a second light source; and the input connector is connected to the input voltage generating circuit and connected to an external power source for receiving an alternating-current voltage signal; and
wherein the color temperature adjusting circuit comprises an encoder switch and a first voltage adjusting element, wherein the encoder switch comprises a first main pin, a first auxiliary pin, a second main pin, a second auxiliary pin, a main common pin, an auxiliary common pin and a switch element, wherein the main common pin and the auxiliary common pin are connected to a grounding point, and the switch element is configured to selectively connect the first main pin to the first auxiliary pin or connect the second main pin to the second auxiliary pin;
wherein a positive electrode of the first light source is connected to the grounding point, a negative electrode of the first light source is connected to the first main pin, the first auxiliary pin and the second auxiliary pin, wherein a positive electrode of the second light source is connected to the grounding point, a negative electrode of the second light source is connected to the second main pin via the first voltage adjusting element.