An LED lamp device includes a light emitting element that emits light in a blue-based or violet-based color, an LED having a fluorescent material that emits fluorescent light in a yellow to yellow-green-based color in response to light received from the light emitting element, a lens having a light incident surface to which light emitted from the LED comes in and a convex lens part that radiates incident light, and a light shielding member provided on the light radiation side of the LED, having an opening, and made of a non-transmitting material to light from the LED. The member externally radiates light from the LED radiated through the lens from the opening and cuts the peripheral part of the light from the LED. Therefore, illumination light with no color irregularity in yellow observed around the illumination region can be provided, and a lamp device suitable for illumination can be provided.