Abstract: A light emitting diode (LED) lighting device includes a light case, a plurality of heatsinks, a plurality of LED modules and a plurality of power supplies. Each of the heatsinks is connected with one of the LED modules and one of the power supplies correspondingly to form one LED light unit. The LED light units are assembled with the light case to form the LED lighting device.

Abstract: A light emitting diode (LED) lighting device includes a light case, a plurality of heatsink, a plurality of LED modules and a plurality of power supplies. Each of the heatsink is connected with one of the LED modules and one of the power supplies correspondingly to form one LED light unit. The LED light units are assembled with the light case to form the LED lighting device.

Abstract: An optical compact disk drive includes a housing and a mounting seat with a disk-supporting tray that has opposite front and rear peripheral portions and that is formed with a recess between the front and rear peripheral portions and an elongated opening extending from a center of the recess to the rear peripheral portion. A pair of front air-communicating openings are formed in the front peripheral portion, and at least a rear air-communicating opening is formed in the rear peripheral portion. Air is permitted to flow from a bottom side to a top side of the disk-supporting tray through the front and rear air-communicating openings.

Abstract: A panel structure installed on an electric device. The electric device includes a circuit board including at least one indicating lamp for displaying actions and at least one button switch for inputting the default command. The panel structure includes a panel connected to the electric device for covering the circuit board, the panel including at least one slotting, and at least one button installed between the circuit board and the panel for matching the slotting. The button includes a prominent part, a pressing part extended from the bottom of the prominent part, and an elastic frame extended from the bottom of the prominent part, wherein the one end of the elastic frame is connected to the panel for holding the button slightly protruded from the slotting when the button is not being forced and for making the pressing part contact with the button switch when the button is being forced.

Abstract: An optical compact disk drive includes a housing and a mounting seat with a disk-supporting tray that has opposite front and rear peripheral portions and that is formed with a recess between the front and rear peripheral portions and an elongated opening extending from a center of the recess to the rear peripheral portion. A pair of front air-communicating openings are formed in the front peripheral portion, and at least a rear air-communicating opening is formed in the rear peripheral portion. Air is permitted to flow from a bottom side to a top side of the disk-supporting tray through the front and rear air-communicating openings.