| 摘要 |
A housing 1 according to a first embodiment of the present invention is provided with a bottom surface cover 2, a top surface cover 4, and a reinforcement member 3 that is disposed in a space divided by the bottom surface cover 2 and the top surface cover 4 and has a planar portion, a standing wall portion 32, which stands at the periphery of the planar portion, and a joining portion 33, which extends from the periphery of the standing wall portion 32, said joining portion 33 of the reinforcement member 3 being joined to the bottom surface cover 2, wherein the area of the joining portion 33 is in the range of 10-100 cm2, inclusive, and the maximum value for the height of the reinforcement member 3 is in the range of 3-30 mm, inclusive. |
