Abstract: Provided is a respiratory filter device having a filter module, a connection curved holder, an adjustable curved holder, and a mask. The filter module has a housing body, and both the connection curved holder and the adjustable curved holder have a respective free end and a respective connection end opposite to each other. The connection ends of the connection curved holder and the adjustable curved holder are connected with the filter module, and the free ends face to each other and form an opening between the free ends. The filter module is connected to the connection curved holder and the adjustable curved holder to define an accommodation space adjacent to the opening. Accordingly, the respiratory filter device can be worn on a user's head or neck directly by the accommodation space, for allowing the user to do other work when wearing the respiratory filter device.

Abstract: A portable breathing apparatus has a respirator and a filter. The filter has a multifunctional strainer, a photocatalyst element, an exhauster, a high-pressure generator and an active carbon net in the interior thereof. Via the exhauster, external air can be filtered by the multifunctional strainer and mixed with ozone and negative ions generated from the photocatalyst element and the high-pressure generator thereby filtering and sterilizing the external air. Furthermore, the external air passes through a tube via the active carbon net to the respirator. Hence, it is easy for people wearing the portable breathing apparatus to breathe and experience the functions of air sterilization and filtration.

Abstract: A portable breathing apparatus has a respirator and a filter. The filter has a multifunctional strainer, a photocatalyst element, an exhauster, a high-pressure generator and an active carbon net in the interior thereof. Via the exhauster, external air can be filtered by the multifunctional strainer and mixed with ozone and negative ions generated from the photocatalyst element and the high- pressure generator thereby filtering and sterilizing the external air. Furthermore, the external air passes through a tube via the active carbon net to the respirator. Hence, it is easy for people wearing the portable breathing apparatus to breathe and experience the functions of air sterilization and filtration.

Abstract: A memory card enclosure includes a bottom cover defining therein a first receiving room and having multiple retaining legs formed on a sidewall defining the first receiving room and extending from the sidewall defining the first receiving room to an opposed sidewall defining the first receiving room and a top cover selectively connected to the bottom cover to close the bottom cover and having a second receiving room corresponding to and communicating with the first receiving room of the bottom cover. After a memory card is inserted into the first receiving room, the retaining legs are able to provide an abutting force to the memory card to be urged against the opposed sidewall defining the first receiving room.