摘要：
The present invention relates to a lighting device (100, 200, 300) comprising a split lighting engine with at least two thermally separated sub-engines (104, 106, 202, 204, 206, 302). Each sub-engine comprises at least one solid state light source (114, 212, 306) and a component (118, 210, 304) adapted to regulate electric current or power to the at least one solid state light source (114, 212, 306), so that the sub-engines (104, 106, 202, 204, 206, 302) are individually drivable based on a thermal environment of each sub-engine.
权利要求：
CLAIMS:
1. A lighting device (100, 200, 300) comprising a split lighting engine with at least two thermally separated sub-engines (104, 106, 202, 204, 206, 302), said lighting device further comprising an envelope (102), wherein the sub-engines (104, 106) are arranged within the envelope (102) along an optical axis (A) of the lighting device (100),
wherein each sub-engine comprises:
at least one solid state light source (114, 212, 306); and
a component (118, 210, 304) adapted to regulate electric current or power to the at least one solid state light source (114, 212, 306),
the lighting device further comprising driver circuitry (108) connected to each sub-engine (104, 106) for driving the at least one solid state light source (114), so that the sub-engines (104, 106, 202, 204, 206, 302) are individually drivable based on a thermal environment of each sub-engine.
2. A lighting device (100) according to claim 1, wherein each sub-engine (104,
106) comprises a substrate (116) arranged parallel to the optical axis (A) of the lighting device, wherein the at least one solid state light source (114) is mounted on the substrate (116).
3. A lighting device (100, 200, 300) according to claim 1 or 2, wherein each sub- engine (104, 106, 202, 204, 206, 302) is spaced apart from other sub-engines by a predetermined distance (d, D).
4. A lighting device (100, 200, 300) according to claim 3, wherein the predetermined distance (d, D) is at least 5 mm.
5. A lighting device (100, 200, 300) according to any one of the preceding claims, wherein the component is a passive component (118, 210, 304) adapted to passively regulate electric current or power to the at least one solid state light source.
6. A lighting device (100, 200, 300) according to any one of claims 1-4, wherein the component is an active component (118, 210, 304) adapted to actively regulate electric current or power to the at least one solid state light source (114, 212, 306).
7. A lighting device (300) according to any one of claims 1-6, further comprising a shell made by additive manufacturing (301) at least partially enclosing the sub-engines (302).
8. A lighting device according to any one of the preceding claims, wherein the lighting device is a light bulb (100) or a luminaire (200, 300).
9. A method for operating a lighting device, which lighting device comprises a split lighting engine with at least two thermally separated sub-engines, said lighting device further comprising an envelope (102), wherein the sub-engines (104, 106) are arranged within the envelope (102) along an optical axis (A) of the lighting device (100),
wherein each sub-engine comprises at least one solid state light source, which method comprises:
regulating electric current or power to the at least one solid state light source, the lighting device further comprising driver circuitry (108) connected to each sub-engine (104, 106) for driving the at least one solid state light source (114), to individually drive the sub-engines based on a thermal environment of each sub-engine.
10. A method for determining the orientation of a lighting device, the lighting device comprising:
a split lighting engine with at least two thermally separated sub-engines, wherein each sub-engine comprises:
at least one solid state light source; and
a temperature sensor arranged on each sub-engine to measure the temperature of the sub-engine;
means for regulating electric current or power to the at least one solid state light source, so that the sub-engines are individually drivable based on their thermal environment; and
an envelope, wherein the sub-engines are placed within the envelope along an optical axis of the lighting device;
the method comprises the steps of:
applying (S I) a substantially equal amount of power to each sub-engine; measuring (S2) the temperature of each sub-engine to provide temperature data for each sub-engine; and
determining (S3) the orientation of the lighting device based on the temperature data from each sub-engine and their respective placement along the optical axis.