Abstract: A ceiling fan device includes a ceiling fan provided with a light emitting diode (LED) lamp, and an actuating and dimming integrator including an actuating and dimming integration circuit which includes an actuating circuit module, a regulating constant current circuit module, and a main control chip. The regulating constant current circuit module includes a first photovoltaic coupler, a digital/analogue (D/A) converter circuit, a comparator chip, and a sampling resistor. The main control chip outputs a pulse width modulation (PWM) which is transmitted through the first photovoltaic coupler to the D/A converter circuit to produce a steady direct-current basis voltage which is supplied to the comparator chip to function as a standard of a current sampling judgment. The comparator chip samples and compares a current of the sampling resistor with the direct-current basis voltage.

Abstract: A ceiling fan includes a fan unit and a plurality of blade units connected with the fan unit. Each of the blade units includes an upper blade, a lower blade combined with the upper blade, and a light source located between the upper blade and the lower blade. Thus, each of the blade units is made of a plastic material to decrease the cost of fabrication of the ceiling fan and to reduce the weight of the ceiling fan.