Abstract: A power generation switch apparatus including multiple switch keys, a power generation apparatus that is driven to perform power generation by an operation force applied to the multiple switch keys, multiple switches being supplied with an electric power generated by the power generation apparatus and performing a switching movement by an operation of the multiple switch keys, and a switch signal transmission circuit being driven by the electric power from the power generation apparatus and outputting multiple switch signals that are different from each other in correspondence with the switching movement of the multiple switches.

Abstract: A power generation switch apparatus including multiple switch keys, a power generation apparatus that is driven to perform power generation by an operation force applied to the multiple switch keys, multiple switches being supplied with an electric power generated by the power generation apparatus and performing a switching movement by an operation of the multiple switch keys, and a switch signal transmission circuit being driven by the electric power from the power generation apparatus and outputting multiple switch signals that are different from each other in correspondence with the switching movement of the multiple switches.

Abstract: A battery capable of being charged by a solar cell and an electric generator has its state of charge detected by a charge-state detecting sensor, and an electric generator operation control device controls the charge of the battery by the electric generator in accordance with the detection result detected by the charge-state detecting sensor so as to make the state of charge detected by the charge-state detecting sensor less than 100%. Accordingly, it is possible to effectively charge the battery by electricity obtained by the solar cell.

Abstract: A photocatalytic filter having a coating layer formed in a thickness of 5 to 60 &mgr;m on a base material and including 5 to 60% by weight of ultraviolet ray-transmissible particles (such as glass particles or fibers) having a minor axis of 0.2 to 50 &mgr;m, 20 to 80% by weight of photocatalytical particles (TiO2) having an average particle size of 0.001 to 0.02 &mgr;m, 10 to 60% by weight of fine silica particles having an average particle size of 0.002 to 0.2 &mgr;m and optionally 0.2 to 20% by weight of a clay mineral material, preferably a portion of the ultraviolet ray-transmissible particles being exposed to the outside of the coating layer, exhibits a high air-cleaning activity, a high adhesion of the coating layer to the base material and a high durability in the air-cleaning activity.

Abstract: A photocatalytic filter having a coating layer formed in a thickness of 5 to 60 &mgr;m on a base material and including 5 to 60% by weight of ultraviolet ray-transmissible particles (such as glass particles or fibers) having a minor axis of 0.2 to 50 &mgr;m, 20 to 80% by weight of photocatalytical particles (TiO2) having an average particle size of 0.001 to 0.02 &mgr;m, 10 to 60% by weight of fine silica particles having an average particle size of 0.002 to 0.2 &mgr;m and optionally 0.2 to 20% by weight of a clay mineral material, preferably a portion of the ultraviolet ray-transmissible particles being exposed to the outside of the coating layer, exhibits a high air-cleaning activity, a high adhesion of the coating layer to the base material and a high durability in the air-cleaning activity.