Bulb-type light source
AssigneeSeoul Semiconductor Co., Ltd.
InventorsJae Hyun Park, Seong Jin Lee, Jong Kook Lee
Life of this patent
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Abstract
A lighting device includes a substrate having a plurality of flat portions and a non-flat portion disposed between the flat portions, a plurality of light emitting sources disposed on the substrate, a fluorescent substrate layer covering one or more light emitting sources and converting a wavelength of a light from the light emitting source, and a connection line disposed on the substrate and electrically connecting the light emitting sources adjacent to each other between the adjacent light emitting sources. The substrate has a first end and a second end are arranged at different distance from a central axis.
Claims20
A lighting device comprising:
- a substrate comprising a plurality of flat portions and a non-flat portion disposed between two neighboring flat portions among the plurality of flat portions;
- a plurality of light emitting sources disposed on the plurality of flat portions of the substrate;
- a fluorescent substrate layer covering one or more light emitting sources of the plurality of light emitting sources and converting a wavelength of light emitted from the one or more light emitting sources;
- and
- a connection line disposed on the non-flat portion of the substrate and electrically connecting adjacent light emitting sources arranged on the two neighboring flat portions,
- wherein the substrate has a first end and a second end that are arranged at different distance from a central axis;
- and
- the plurality of flat portions includes a first flat portion and a second flat portion that are different in length between the first end and the second end.
The lighting device of 2, wherein the plurality of light emitting sources are arranged radially about a center of the globe when viewed from one direction.
A lighting device comprising:
- a globe transmitting a light;
- a substrate comprising a plurality of flat portions and at least one of non-flat portion;
- a plurality of light emitting sources disposed on the substrate;
- a fluorescent substrate layer covering one or more light emitting sources and converting a wavelength of light from the one or more light emitting sources;
- and
- a connection line disposed on the substrate and electrically connecting adjacent light emitting sources;
- wherein the substrate has a first end and a second end, the first end and the second end arranged at different distance from a central axis;
- and
- a fixing plate that fixes the second end;
- wherein:
- each light emitting source emits light with an orientation angle in two or more light emission areas;
- two light emission areas are positioned at the second end adjacent to each other and overlap with each other;
- and
- a distance from the fixing plate to an overlapping area is smaller than a distance from the fixing plate to the globe.
A lighting device comprising:
- a plurality of light filaments coupled at a first end and a second end and extending along a central axis, a light filament comprising:
- a substrate comprising a plurality of flat portions and a non-flat portion disposed between two neighboring flat portions among the plurality of flat portions;
- a plurality of light emitting sources disposed on the plurality of flat portions of the substrate;
- a fluorescent substrate layer covering one or more light emitting sources and converting a wavelength of light from the plurality of light emitting sources;
- and
- a connection line disposed on the non-flat portion of the substrate and electrically connecting the one or more light emitting sources arranged on the two neighboring flat portions,
- wherein among a first distance between the central axis and the light filament at the first end, a second distance between the central axis and the light filament at the second end, and a third distance between the central axis and the light filament in an area between the first end and the second end, the third distance is greater than the first distance and the second distance such that an influence of heat between the plurality of light filaments adjacent to each other is minimized.
Dependencies are inferred from the claim text.