Patent ID: 6567009
Filing Date: 2003-05-20
Classification: H05B

Abstract:
A light control type LED lighting equipment comprising:a LED aggregate lamp portion, in which a first color LED group, a second color LED group and a third color LED group are included; a first color drive circuit, a second color drive circuit and a third color drive circuit for supplying power for respective of the first color LED group, the second color LED group and the third color LED group so as to illuminating the LED groups; control input generating means for generating one series of control input signal, a value of said control input signal increasing or decreasing within a predetermined range in response to operation by a user; control output generating means for generating a combination of first color luminance data, a second color luminance data and a third color luminance data corresponding to a value of said control input signal according to a predetermined primary curve set in a chromaticity coordinate; and individual power control means for independently controlling said first color drive circuit, said second color drive circuit and said third color drive circuit on the basis of said first color luminance data, said second color luminance data and said third color luminance data for varying power supply amount for said first LED group, said second LED group and said third LED group, wherein a color tone of said LED aggregate lamp portion being varied continuously depending on the value of said control input signal.