IMAGE DISPLAY DEVICE

摘要

An image display device for exhibiting an adjustment function of a biological clock without changing visibility of an image. The image display device (A) displays an image by radiating light from a light source (1) to a display unit (2). The image display device includes the light source (1) having a light emitter for emitting light in a wavelength band of 445-480 nm, and a control means (3) for controlling intensity of the light in that wavelength band; and the display unit separately having a region (21) for displaying a predetermined image, and a region (22) for displaying an image with the light intensity in the wavelength band controlled by the control means (3).