| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound device capable of loudly amplifying a sound outputted from a sound source as it is, without requiring components, such as an electrical circuit and a mechanical vibration member, and any power supply.SOLUTION: A sound box connection body 120 arranges sound box small bodies 110(1)-110(9) including a sound box housing, a sound entrance and a sound exit in multiple stages and is successively connected in a row of the sound box small bodies so that the sound entrance of the sound box small bodies in a stage is connected to the sound exit of the sound box small bodies in the front stage and the sound exit of the sound box small bodies in the stage is connected to the sound entrance of the sound box small bodies in the subsequent stage; provides an external sound source opening 130 in the sound entrance of the sound box small body 110(1) in the first stage of the sound box connection body 120; includes a loudspeaker opening 140 in the sound exit of the sound box small body 110(9) in the final stage of the sound box connection body 120; and has a structure in which sizes of the sound box small bodies and cross sections of connected portions are gradually increased. |
