ALTERNATING CURRENT DIRECT DRIVE LED LIGHT-EMITTING DEVICE

摘要

The present solution relates to an alternating current direct drive technology for an LED light-emitting device. In response to the shortcoming of flickering light caused by an alternating current direct drive LED light-emitting device in the prior art, disclosed is an alternating current direct drive LED light-emitting device, constituted by cascading n number of LED modules (5), where switch-off and switch-on voltages for a switch unit (6) corresponding to each level of the LED modules (5) are preconfigured appropriately via a sampling unit (4), thus preventing flickers from occurring during an alternating current voltage fluctuation. An increase in the number of the LED modules (5), equivalent to a decrease in the conductive voltage of each level of the LED modules (5), increases the utilization rate of a power supply. When multiple levels of the LED modules (5) are used, during the alternating current voltage fluctuation, the impact on each LED module (5) is of a relatively lesser extent than when a single module is used, also, the LED is provided with improved working stability, improved reliability, and enhanced capability in countering the alternating current voltage fluctuation.