Speaker housing

1. A speaker housing comprising:

a front wall where a speaker is to be attached;

at least one first wall;

at least one second wall; and

a plurality of ribs disposed on the first wall,

wherein the front wall, the first wall, and the second wall form an internal space,

a plurality of meshes that segment the first wall are defined, and

wherein the plurality of ribs are shaped according to contours of the direction of a maximum principal stress induced in the meshes by vibrations applied to the first wall in a state where the ribs are not disposed on the first wall.

2. The speaker housing according to claim 1 , wherein each of the plurality of ribs has a continuous curved shape or straight shape formed by connecting the contours of the direction of the maximum principal stress induced in the adjacent meshes.

3. The speaker housing according to claim 1 , wherein each of the plurality of ribs extends along the contours connecting the adjacent meshes where the orientations and magnitudes of the maximum principal stress induced in the adjacent meshes out of the plurality of adjacent meshes are closest.

4. The speaker housing according to claim 1 , wherein heights of each of the plurality of ribs at positions corresponding to the meshes are determined in accordance with the von Mises stress induced to the first wall by the vibrations in the state where the plurality of ribs are not disposed on the first wall.

5. The speaker housing according to claim 1 , wherein widths of each of the plurality of ribs at positions corresponding to the meshes are determined in accordance with the von Mises stress induced to the first wall by the vibrations in the state where the plurality of ribs are not disposed on the first wall.

6. The speaker housing according to claim 1 , wherein the vibrations are in a primary mode.

7. A speaker housing comprising:

a front wall where a speaker is to be attached;

at least one first wall;

at least one second wall; and

a plurality of ribs disposed on the first wall,

wherein the front wall, the first wall, and the second wall form an internal space,

wherein the plurality of ribs are disposed spaced along a first direction, and

wherein at least some of the plurality of ribs are curved protruding along the first direction toward one of two opposing sides of the first direction,

wherein the plurality of ribs include:

a first rib extending straight along a second direction that is perpendicular to the first direction;

at least one second rib that is disposed on one side of the first rib along the first direction and curved, protruding toward the one side; and

at least one third rib that is disposed on the opposite side of the first rib along the first direction and curved, protruding toward the opposite side.

8. The speaker housing according to claim 7 , wherein at least some of the plurality of ribs that are disposed away from a middle region in the first direction have a curvature radius thereof decreasing.

9. The speaker housing according to claim 7 , wherein the plurality of ribs are configured so that the closer the ribs are disposed in a region nearer a middle of the first wall in the first direction, the greater at least one of a width or a height of the ribs is.

10. The speaker housing according to claim 7 , wherein each of the plurality of ribs is configured so that at least one of a width or a height thereof varies along a direction in which the respective rib extends.

11. The speaker housing according to claim 7 , wherein the plurality of ribs extend along a horizontal direction, which is perpendicular to the first direction.