One object of the present invention is to provide a light emitting element that includes an organic compound and an inorganic compound and has low driving voltage. Terminal retaining members 9 are pivotally provided respectively at opening portions 7 of the connector housing. The outer bottom piece includes an outer layer and an inner layer that is impermeable to water and permeable to vapor. The dressing layer has a thick center portion surrounded by a flange portion. The result of the method is modified polysaccharides, which can be used for different food and non-food applications. Propeller or battery is not required.