Lighting device
AssigneeToyoda Gosei Co., Ltd.
InventorsTakayuki Kamiya, Hiroshi Ito, Akihiro Misawa
Life of this patent
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Abstract
A lighting device has an LED light source and a lens. The lens includes a light emitting surface arranged substantially parallel to a wall of a container when the device is attached to the wall, and a first light receiving surface. The first light receiving surface receives light that is emitted from the LED light source in a direction slanted with respect to the light emitting surface, and takes a concave surface configured such that a distance of the first light receiving surface to the light emitting surface increases from one end to the other end of the lens. The LED light source is disposed while being confronted with one end part of the lens.
Claims9
A light device for illumination, comprising:
- a LED light source substantially confronting to one end of a lens;
- said lens including a light emitting surface arranged substantially parallel to a wall when said lighting device is attached to said wall and a first light receiving surface confronting to said LED light source for receiving light which is emitted from said LED light source and is incident in a direction slanted with respect to said light emitting surface;
- wherein said first light receiving surface is provided with a concave surface such that a distance from said first light receiving surface to said light emitting increases in a direction from said one end to the other end of said lens.
Dependencies are inferred from the claim text.