In a light emitting device with a heat-release metallic part made of metal and a packaging ceramic part made of ceramics bonded to the metallic part via an adhesive, the adhesive is a hot melt that melts with heat at a melting temperature higher than a given temperature and has flexibility when it has been hardened and formed a bond, and the ceramic part has pores at least in a given bonding surface region so that the hot melt is impregnated into the pores.