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US 9,778,411 B2Granted
Lighting device and display device
AssigneeSharp Kabushiki Kaisha
InventorsRyuzo Yuki, Takeshi Ishida, Mitsuhiro Murata, Hirotoshi Yasunaga
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Abstract
A backlight device 12 includes LEDs 17, an optical member 16 that applies optical effects to light from the LEDs 17 and has a through hole 23 that is through a thickness thereof, and a restricting member 26 having a communication hole 27 that is communicated with the through hole 23. The restricting member 26 is inserted in the through hole 23 to be in contact with an inner surface of the through hole 23 to restrict movement of the optical member 16 along a plate surface of the optical member 16.
Claims13
A lighting device comprising:
- a light source;
- an optical member that is a sheet and applies optical effects to light from the light source and has a through hole being through a thickness thereof;
- and
- a restricting member having a communication hole that is communicated with the through hole, the restricting member being inserted in the through hole to be in contact with an inner surface of the through hole to restrict movement of the optical member along a plate surface of the optical member;
- wherein
- the optical member includes an optical member-side projection portion that is projected from a part of the inner peripheral surface of the through hole with respect to the circumferential direction,
- the restricting member includes a restricting member-side recessed portion that is recessed from a part of the outer peripheral surface with respect to the circumferential direction and open to be communicated with the communication hole and receives the optical member-side projection portion.
4 more elements
Dependencies are inferred from the claim text.