Cabin illumination device
AssigneePanasonic Automotive Systems Co., Ltd.
InventorsMasahiro Jigi, Mayuko Okada, Yuhei Chida, Kenta Yamazaki
Life of this patent
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Abstract
A cabin illumination device is provided on a wall surface of a cabin of a vehicle and illuminates the cabin and includes: a light source disposed to emit light away from the wall surface; and a reflective member disposed to intersect a light axis of light emitted by the light source. The reflective member includes a first protruded surface disposed to intersect the light axis of the light source, and a portion of the reflective member is sloped downward in a direction away from an intersection of the light axis and the first protruded surface.
Claims16
A cabin illumination device that is configured to be provided on a wall surface of a cabin of a vehicle and illuminate the cabin, the cabin illumination device comprising:
- a plurality of light sources disposed to emit light away from the wall surface;
- and
- a reflective member disposed to intersect light axes of light emitted by the plurality of light sources, wherein
- the reflective member includes:
- a first protruded surface directly underlying a first light source of the plurality of light sources;
- a second protruded surface;
- a first recessed surface that is connected between the first and second protruded surfaces and that is recessed relative to the first and second protruded surfaces;
- a third protruded surface directly underlying a second light source of the plurality of light sources;
- and
- a second recessed surface that is connected between the second and third protruded surfaces and that is recessed relative to the second and third protruded surfaces,
- a gradient of a first sloped surface that extends across the first protruded surface and the first recessed surface is larger than a gradient of a second sloped surface that extends across the first recessed surface and the second protruded surface, and
- a gradient of a third sloped surface that extends across the second protruded surface and the second recessed surface is smaller than a gradient of a fourth sloped surface that extends across the second recessed surface and the third protruded surface.
A cabin illumination device that is configured to be provided on a wall surface of a cabin of a vehicle and illuminate the cabin, the cabin illumination device comprising:
- a plurality of light sources disposed to emit light away from the wall surface;
- and
- a reflective member disposed to intersect a light axis of light emitted by a light source of the plurality of light sources, wherein
- the reflective member includes:
- a first protruded surface disposed to intersect the light axis of the light source;
- a recessed surface that is recessed relative to the first protruded surface;
- and
- a second protruded surface that is protruded relative to the recessed surface,
- a portion of the reflective member is sloped downward in a direction away from an intersection of the light axis and the first protruded surface,
- the first protruded surface, the recessed surface, and the second protruded surface of the reflective member are arranged in stated order,
- a gradient of a first sloped surface that extends across the first protruded surface and the recessed surface is larger than a gradient of a second sloped surface that extends across the recessed surface and the second protruded surface,
- the second protruded surface is disposed at a position corresponding to an area between two adjacent light sources among the plurality of light sources, and
- the recessed surface has a hemispherical surface shape in which a cross section of the reflective member taken in an arrangement direction of the plurality of light sources has an arc shape, and a cross section of the reflective member taken in a direction orthogonal to the arrangement direction of the plurality of light sources also has an arc shape.
Dependencies are inferred from the claim text.