Color temperature-adjustable lamp device

A color temperature-adjustable lamp device, comprising:

• a first LED lamp assembly, having one or more LEDs, wherein light emitted by the first LED lamp assembly has a first color temperature;
• a second LED lamp assembly, having LEDs, the number of which is the same as the number of the LEDs in the first LED lamp assembly, wherein light emitted by the second LED lamp assembly has a second color temperature, and the second color temperature is different from the first color temperature;
• a color temperature adjustment portion, connected in series with at least one of the first LED lamp assembly and the second LED lamp assembly, the color temperature adjustment portion comprising at least one of a diode, an LED and a voltage regulator tube;
• and
• a manual switch assembly, for controlling the turning-on and turning-off of the first LED lamp assembly and the second LED lamp assembly,
• wherein after connecting the color temperature adjustment portion in series with at least one of the first LED lamp assembly and the second LED lamp assembly, a light-emitting assembly is formed together by a formed first lamp string where the first LED lamp assembly is located and a formed second lamp string where the second LED lamp assembly is located, and the light-emitting assembly is connected between a voltage source end and a grounding end.