Abstract: A push button switch has a box-shaped base, a first operating lever and a second operating lever, wherein each of the first operating lever and the second operating lever has a substantially U shape in a plan view, wherein the first operating lever and the second operating lever are arranged on the box-shaped base pivotally about middle parts of both arms as fulcra, and wherein the first operating lever and the second operating lever connect the tips of the both arms mutually pivotally and support the tips of the both arms in a vertically movable manner, an operating cover that has a planar shape covering the connected first and second operating levers and forms an operating hole at nearly the center thereof, and a plunger, wherein the plunger has a sectional shape capable of fitting into the operating hole of the operating cover.

Abstract: In a push-button switch, a mark for conveying information to a user is disposed on a portion of a front surface of a push-button for operating a switch main body. A light-guiding plate is disposed between the switch main body and the push-button. A mark diffusing portion that diffuses injected light is disposed on a portion of the light-guiding plate that faces the mark. A mark light source portion injects light into the light-guiding plate so as to be directed toward the mark diffusing portion.

Abstract: An LED surface cover (1) consists of a resin molding and has a main reflector (2) which reflects light forward from a surface light source and a subsidiary reflector (3) having a reflection surface which reflects light emitted from an LED light source (4) to the main reflector (2). The main reflector (2) has an aperture portion (2a) were the LED light source can be disposed and has a curved surface for traveling light reflected from the subsidiary reflector (3) to a region forward from the surface light source. The subsidiary reflector (3) is disposed above the aperture portion (2a) formed on the main reflector (2). The reflection surface of the subsidiary reflector (3) has an inclination with respect to a surface of the aperture portion (2a). The present invention provides a lighting system capable of accomplishing surface emission by carrying out a simple method, even though the LED light source (4) having a strong directivity is used.

Abstract: An electrostatic operation device in which a variation in the amount of electric charges accumulated in an electret film caused by physical impact can be suppressed. The electrostatic operation device (electrostatic induction power generating device (1)) comprises movable electrodes (8), an electret film (5) so formed as to face the movable electrodes (8) at a space therebetween, and a stopper (401b) for suppressing the approach of the movable electrodes (8) to the electret film (5) within a predetermined space.