Light emitting device and switch device
AssigneeValeo Japan Co., Ltd.
InventorsAyami Sato, Vinothkumar Ravi, Prithiviraj Vimalkumar
Life of this patent
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Abstract
A light emitting device includes at least two light sources arranged side by side in a first direction and a light guide placed opposed to the light sources. As viewed in an opposing direction of the light sources and the light guide, a light receiving surface of the light guide overlaps light emitting surfaces of the light sources. As viewed in the opposing direction, the light receiving surface has depressions in a region opposed to the light emitting surfaces of the light sources. The depressions are arranged side by side in an arrangement direction of the light sources in a one-to-one correspondence with the light sources.
Claims8
A light emitting device comprising:
- at least two light sources arranged side by side in a first direction;
- and
- a light guide placed opposed to the light sources,
- wherein:
- as viewed in an opposing direction of the at least two light sources and the light guide, a light receiving surface of the light guide overlaps light emitting surfaces of the at least two light sources,
- as viewed in the opposing direction, the light receiving surface has depressions in a region opposed to the light emitting surfaces of the at least two light sources,
- the depressions are arranged side by side in the first direction in a one-to-one correspondence with the at least two light sources,
- each depression includes a pair of inclined surfaces whose distance from a corresponding light source changes continuously in the first direction,
- the pair of the inclined surfaces are connected to each other at a position overlapping a light emitting surface of the corresponding light source as viewed in the opposing direction, and
- as viewed in the opposing direction, a boundary line at a connecting section of the pair of inclined surfaces is perpendicular to the first direction and at a maximum distance from the corresponding light source.
A switch device comprising:
- operators configured to be operated by a user;
- light emitting devices configured to illuminate illumination sections of the operators, wherein
- the operators includes a first operator and a second operator having a larger area in the illumination section than the first operator, mutually different functions are assigned to the first operator and the second operator,
- the light emitting devices are provided in a one-to-one correspondence with the operators, each light emitting device includes:
- two light sources arranged side by side;
- and
- one light guide placed opposed to the two light sources,
- in the light emitting device for the first operator, a surface of the light guide that is opposed to the light sources has depressions each including a pair of inclined surfaces whose distance from a corresponding light source changes continuously in an arrangement direction of the light sources, and the depressions are arranged side by side in the arrangement direction of the light sources in a one-to-one correspondence with the light sources, and
- in the light emitting device for the second operator, a surface of the light guide that is opposed to the corresponding light sources is free of a depression.
Dependencies are inferred from the claim text.