Abstract: An LED unit which serves as illumination light source to be attached to lighting equipment, includes: a mounting board on which a light-emitting element, which emits light frontward, is provided; a support pad disposed behind the mounting board; and a case disposed so that the mounting board is sandwiched in a front-back direction by the case and the support pad. The support pad or the case includes insertion holes which are three or more openings into which securing components for securing the LED unit to the lighting equipment are inserted, and the three or more openings are disposed in such a way that, when a distance between two of the three or more openings is referred to as an inter-opening distance, at least one inter-opening distance is different from other inter-opening distances.

Abstract: In a sterilizer for sterilizing an object to be sterilized utilizing microwaves of a microwave oven for home use, an electrodeless discharge bulb, which seals a material such as mercury which discharges owing to receiving microwaves and emitting ultraviolet rays, is fixed in an inside of a container. An object to be sterilized is held in the container in a manner so that an objective face to be sterilized of the object faces an ultraviolet ray emitting face of the electrodeless discharge bulb. In such a state, the container is put into an inside of the microwave oven, and the microwaves are irradiated, so that the ultraviolet rays emitted from the electrodeless discharge bulb are irradiated to the objective face of the object for processing the serialization.