Patent ID: 11879634
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F  G  H  E | IPC F

Claim 20:
21. An illumination device comprising:
a frame-like member that is provided at at least one position on an end part of a light-emitting panel having a light emission surface or in a vicinity of the light-emitting panel, the frame-like member including a bright part region and a dark part region;
a light source that emits light to be incident upon the frame-like member; and
a light amount regulation part that makes intensity of light heading for a space facing the light emission surface from the dark part region weaker than intensity of light heading for the space from the bright part region in the light entering the frame-like member from the light source, or makes the intensity of the light heading for the space from the bright part region stronger than the intensity of the light heading for the space from the dark part region in the light entering the frame-like member from the light source, wherein
the frame-like member includes a light transmissive member,
the light source is arranged to make light enter the frame-like member from a back side of the frame-like member when a surface of the frame-like member on a side facing the space is defined to be on a front side and a side opposite to the front side is defined as the back side, and
the light amount regulation part includes a first light restriction member that is arranged in the dark part region or a region corresponding to the dark part region in an optical path until the light emitted from the light source enters a back surface of the frame-like member and is emitted from a front surface of the frame-like member as light heading for the space and absorbs or reflects at least a part of incident light.