LED device with an active heat-dissipation device

摘要

A light-emitting diode (LED) device has a shade (10), an active heat-dissipation device and an LED module (20). The shade (10) has a cavity. The active heat-dissipation device is mounted in the cavity in the shade (10) and has a cooling board (70), an evaporator (30), a condenser (40), a compressor (50), an expansion valve (60) and a refrigerant (80). The evaporator (30), condenser (40), compressor (50) and expansion valve (60) connect to each other to form a loop. The refrigerant (80) is set in the loop. The LED module (20) is mounted to the active heat-dissipation device and has at least one LED (25). The active heat-dissipation device dissipates the heat from the LED (25) and even lowers the temperature of the LED (25) under ambient temperature.