WHITE LED ELEMENT IN WHICH BLUE LIGHT IS REDUCED, AND WHITE LED UNIT IN WHICH PLURALITY OF SAID WHITE LED ELEMENTS ARE ARRAYED AND MOUNTED ON WIRING SUBSTRATE

摘要

The present invention addresses the problem of providing a white LED element by which there is obtained white light having a brightness, color rendering property, and a color temperature that are suited to an illumination lamp while blue light is reduced, and also addresses the problem of providing a white LED unit in which a plurality of said white LED elements are arrayed and mounted on a wiring substrate. A red-light-emitting LED is provided to a white LED element obtained by combining a blue-light-emitting LED and a yellow phosphor, the blue-light-emitting LED and the red-light-emitting LED are connected to respectively separate power sources, and the ratio of the current supplied to the blue-light-emitting LED and the current supplied to the red-light-emitting LED is 1:0.3-0.6. It is thereby possible to provide a white LED element in which blue light is reduced and by which there is obtained white light having a brightness, color rendering property, and a color temperature that are suited to an illumination lamp. Furthermore, arraying and mounting a plurality of these white LED elements on a wiring substrate to obtain a white LED unit makes it possible to obtain a light source that is suited to an illumination lamp.