PLANAR ILLUMINATION DEVICE
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United States of America Patent
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Issued Date -
Aug 22, 2024
app pub date -
Jun 25, 2021
filing date -
Aug 7, 2020
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Abstract
In a planar illumination device according to an embodiment, a reflector can be stably fixed to a substrate even when a temperature change occurs. A planar illumination device includes a substrate provided with a plurality of light sources at one surface side, a reflector provided at the one surface side of the substrate, a bottom frame provided at a surface side of the substrate opposite to the one surface side, a first fixing member configured to fix a center portion of the reflector in a longitudinal direction to the bottom frame, and a second fixing member configured to fix the one surface of the substrate and the reflector. A force of the second fixing member restricting the substrate and the reflector is greater at a center portion of the reflector 4 in the longitudinal direction than at a portion of the reflector 4 separated in the longitudinal direction from the center portion.
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