Abstract: A distress warning sign includes a LED mounting panel mounting with a plurality of light emitting diodes, controlled by a build-in one chip micro computer. The distress warning sign is designed to have a super thin structure and is adapted to be placed on the roof of an automobile to effectively warn coming cars when failure or traffic accident happens. The light emitting diodes on the mounting panel are arranged to form various groups and are operated in selectable operation modes, so that the warning sign either serves as an illuminated distress warning sign for traffic warning sign or an electronic dice game for entertainment.

Abstract: An improved, air cleaner is provided to eliminate the detriment caused by air pollution and cigarette smoke. The air cleaner includes a removable build-in ashtray which is mounted in front of the housing of the air cleaner. At smoking, the ashtray would be opened by removing its cover. When the ashtray is full of ash, it would be removed for emptying and cleaning. The air cleaner is provided with a disposable filter pack inserted into an open slot of the cleaner housing. The filter pack contains an active carbon layer and chemical catalyst and perfume therein.