Abstract: A planar light source includes a substrate, light sources, and at least one partitioning member. The partitioning member includes first wall parts, second wall parts, and partitioned regions. The first wall parts define first ridges extending in a first direction. The second wall parts define second ridges extending in a second direction. The partitioned regions each is surrounded by the first ridges and the second ridges in a plan view. the partitioned regions are arranged in the first and second directions. At least one first cut is defined on at least one of the first ridges. At least one second cut is defined on at least one of the second ridges. The at least one first cut and the at least one second cut are spaced apart from each other. At least one of the light sources is arranged in a corresponding one of the partitioned regions.

Abstract: A conventional automatic ordering system requires stock management, so it is useless unless it is used on the assumption that stock is in hand and managed. In a self-propelled cleaner according to this invention, based on the results of a series of self-diagnosis steps (step S400 and subsequent steps) and the cumulative duration of use and the cumulative traveled distance as accumulated during daily cleaning operations (step 270), the necessity for an order for a replacement is judged (steps S431 and S427 to S478) and if ordering is necessary, the user is asked to decide whether to approve ordering (steps S482 and S484) and through a wireless LAN, an order is placed and payment is made by prepaid electronic money (steps S488 and S490). This automatic ordering system can be used conveniently in the home where consumable stock management is impossible.

Abstract: A cleaner capable of appropriately doing the cleaning at the time that a user intends is configured to include: a cleaning portion autonomously suctioning dust in accordance with a predetermined rule or procedure, a timer for detecting a time, an operational button portion accepting an input of the time, a storage battery storing power by charging, a memory storing a time period required for charging the storage battery and a charge start time, and a control unit controlling the operational button portion for accepting an input of the charge start time, calculating a cleaning-ready time based on the time period for charging the storage battery and the charge start time, and prohibiting the cleaning portion from suction of dust for a prescribed period.

Abstract: An autonomous vacuum cleaner network system comprises an autonomous vacuum cleaner and two terminal devices connected to the autonomous vacuum cleaner via a network. Using one of the terminal devices, a user inputs reservation information. The autonomous vacuum cleaner receives the input reservation information via a wireless LAN, and stores it, and further executes a self-diagnostic program immediately before a scheduled cleaning start time. If there is abnormality in the result of the self-diagnosis, the autonomous vacuum cleaner sends the result of the self-diagnosis as maintenance information to the other terminal device which is selected and assigned by the user as an addressed device.