LED (light-emitting diode) desk lamp with adjustable color temperature

Abstract

The invention discloses an LED desk lamp with adjustable color temperature, which comprises a lamp holder body, a supporting pole body, a base component, an adaptor, a voltage converting circuit, and a single chip control circuit, wherein the lamp holder body comprises at least one LED lamp. The LED desk lamp is characterized by further comprising a sliding touch circuit that is connected with signal input ends P1.5 and P1.6 of the single chip control circuit, and further comprising at least two constant current drive circuits that are connected with signal output ends P1.0 and P1.1 of the single chip control circuit, and also comprising an LED indicator light bar, a landscape LED lamp, a color temperature adjusting module, and a USB (universal serial bus) supply circuit. The light of the desk lamp can be controlled by low pressure sliding touch, which is safe, convenient and fast; the operation is striking, the LED desk lamp does not flicker easily, and is scientific and fashionable. A color temperature adjusting key is pressed down to obtain a low level signal that is processed by the single chip control circuit, meanwhile, the light intensity ratio of the two LED lamps is adjusted and controlled to adjust the color temperature; and the USB supply circuit can be used for charging various electronic devices.

Description

technical field [0001] The invention relates to an LED desk lamp, in particular to a desk lamp with a touch switch. Background technique [0002] The dimming technology of signal lamps by touch on the market is relatively mature (such as segmental dimming and stepless dimming technology of incandescent lamps), and it is also widely used in daily life. And with the deepening of people's awareness of environmental protection and energy saving, a large number of LED lights have appeared in the lighting market. LED lights are highly praised by people for their safety, pollution-free, high efficiency, and high stability, and they are gradually replacing traditional incandescent lamps. the trend of. It is bound to become the mainstream of lighting in the future. [0003] However, most of the touch-based segmental dimming and stepless dimming technologies currently on the market use thyristors for adjustment, but the adjustment effect of thyristors is not ideal, and flickering is...

AI Technical Summary

Problems solved by technology

[0003] However, currently on the market, most of the touch-based segmental dimming and stepless dimming technologies use silicon controlled rectifiers for adjustment, but the adjustment effect of silicon controlled rectifiers is not ideal, and it is easy to produce flicker.

In addition, most of the control circuits use mains power directly, the voltage is high, there are potential safety hazards, and LED lights use low-voltage power supply, so it is not suitable for LED lights, and can not be adjusted simultaneously to achieve the purpose of color temperature

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