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

Abstract: A bulb holder for receiving therein a bulb which has two wires extending downward from the bulb has a body and an adapter connected to the body and having two engaging legs extending downward from a bottom of the adapter to the body for electrical connection with the body and two compartments defined in the adapter by an insulator plate which is formed with the adapter for receiving therein a respective one of the two wires of the bulb. The insulator plate is able to avoid undesirable contact between the two wires.