Abstract: An aluminum door/window includes an upper transverse member, which has several curtain rails on an inner side thereof; the curtain rails are formed one above another together with the body of the upper transverse member so as to be inseparable; a lower one of the curtain rails is provided for a first curtain to be directly installed thereon; an extension support member is joined on an upper one of the curtain rails so that a second curtain can be directly installed on the extension support member.

Abstract: A saddle structure comprises: a saddle, a press device, a bulb, a photosensitive member, and a switch. When the rider sits on the saddle, the switch is switched on, and the saddle will be subject to the weight of the rider; meanwhile, the weight of the rider will act on the press device, so that the press device will produce electric power for feeding the bulb; at this moment, if the photosensitive member detects that the environment is dark, it will turns on the bulb. Since the bulb is disposed at the bottom of the press device, namely, the bottom of the saddle, it can illuminate a large area beneath the saddle, almost the whole body of the bicycle, thus ensuring a safe riding in a dark environment.