Abstract: A push button switch (1) includes: a base (30) having a plurality of terminals arranged separately from each other on a same circumference; a movable contact brush (50) having a plurality of contact portions arranged on the plurality of terminals; a rotor (90) having cams that bring the plurality of contact portions into contact with or separate from the plurality of terminals, and is supported to be capable of rotating about an axis of the base (30); an actuator (70) that abuts against a gear provided on the rotor (90) and moves in a direction orthogonal to the axis of the base (30) to rotate the rotor (90); and a button (60) that abuts against the actuator (70), moves the actuator (70) by a press-in operation, and restores elastically by a spring force.

Abstract: A light-emitting device includes a substrate including electrodes, a first group including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a second group including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a fluorescent layer disposed to receive light from the first group of blue light-emitting diode elements, and a phosphorescent layer disposed to receive light from the second group of blue light-emitting diode elements.

Abstract: A light-emitting device (10) includes a substrate (2) including electrodes, a first group (3) including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a second group (4) including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a fluorescent layer (3) disposed to receive light from the first group of blue light-emitting diode elements, and a phosphorescent layer (4) disposed to receive light from the second group of blue light-emitting diode elements.