Patent ID: 11966072
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  F | IPC F  G

Claim 2:
3. The planar light source device according to claim 1, wherein
the partition wall includes a first partition wall facing the first light source with the first light guide interposed between the first partition wall and the first light source, and a second partition wall intersecting the first partition wall,
an angle formed by a wall surface of the first partition wall on the first light guide side and a bottom face of the first partition wall is smaller than an angle formed by a wall surface of the second partition wall on the first light guide side and a bottom face of the second partition wall, and
a height of the second partition wall is higher than a height of the first partition wall in a direction orthogonal to the mounting surface.