Abstract: A ceiling fan upper light includes a light casing. The light casing has at least one side wall made of a light-pervious material. At least one shielding plate made of an opaque material is annularly disposed inside the light casing. At least one groove is annularly disposed inside the light casing. The at least one groove is located between the at least one side wall and the at least one shielding plate. A plurality of light-emitting diodes is annularly disposed inside the light casing. The light-emitting diodes are located in the at least one groove. The light-emitting diodes do not extend out of the at least one groove. The light-emitting diodes emit light toward the opening of the groove, so as to prevent the light from directly irradiating the outside of the at least one side wall, so that the at least one side wall displays the light color of the light-emitting diodes.

Abstract: A cartridge includes an atomizer assembly, a reservoir, and a mouthpiece. The atomizer assembly may heat a vaporizable material to generate an inhalable vapor. The reservoir may store the vaporizable material and include a wick housing and a reservoir body. The wick housing may surround at least a portion of the atomizer assembly and form a proximal wall of the reservoir. The reservoir body may be coupled to the wick housing and form a distal wall of the reservoir. The mouthpiece may deliver the inhalable vapor.

Abstract: A positive and negative voltage generating circuit includes a first rectification circuit, a first voltage stabilizing circuit, a boost circuit, a second rectification circuit, and a second voltage stabilizing circuit. The first rectification circuit rectifies input voltage signals. The first voltage stabilizing circuit stabilizes the rectified input voltage signals to output a negative voltage needed by an LCD module. The boost circuit up-converts the input voltage signals to output a first voltage. The second rectification circuit rectifies the first voltage. The second voltage stabilizing circuit stabilizes the rectified first voltage to output a positive voltage needed by the LCD module. An LCD module driving system and a VOIP phone are also provided.

Abstract: The blades of a ceiling fan are respectively provided with a top surface, a bottom surface, a front wind-confronting portion and a rear wind-confronting portion respectively formed along an edge of two sides of the top surface and the bottom surface. The front wind-confronting portion and the rear wind-confronting portion wind-confronting portion are respectively formed of a slope having the same inclined direction. No matter if the top surface or the bottom surface faces downward after having the blades fixed with a shaft of a motor, the area of the front wind-confronting portion or the rear wind-confronting portion confronting air is always such minimized that air drag can be lowered. Moreover, with the top surface and the bottom surface attached with different patterns, various pattern combinations can be obtained to diversify the outlook of the ceiling fan.

Abstract: The blades of a ceiling fan are respectively provided with a top surface, a bottom surface and a wind-confronting portion obliquely formed along an edge of the top surface and the bottom surface. The wind-confronting portion is composed of two slopes respectively tapered symmetrically from the top surface and the bottom surface to an outmost tip of the blades. No matter if the top surface or the bottom surface faces downward after having the blades fixed with a shaft of a motor, the are a of the wind-confronting portion confronting air is always such minimized that air drag can be lowered. Moreover, with the top surface and the bottom surface attached with different patterns, various pattern combinations can be obtained to diversify the outlook of the ceiling fan.