专利详情

Lighting device comprising a split lighting engine

公开(公告)号：

EP3298323B1

公开(公告)日：

2019-10-02

申请号：

EP2016725431

申请日：

2016-05-17

授权日：

2019-10-02

受理局：

欧洲专利局

专利类型：

授权发明

简单法律状态：

有效

法律状态/事件：

授权

IPC分类号：

F21S2/00 | F21V29/10 | F21S4/20 | F21K9/232 | F21S4/00 | H01L25/16 | F21K9/90 | F21K9/238 | F21Y115/10 | F21Y107/30 | F21Y107/40 | F21V23/02 | H05B44/00

战略新兴产业分类：

电子核心产业

国民经济行业分类号：

C4350 | C3545 | C3871 | C3976

当前申请(专利权)人：

SIGNIFY HOLDING B.V.

原始申请(专利权)人：

PHILIPS LIGHTING HOLDING B.V.

当前申请(专利权)人地址：

工商统一社会信用代码：

工商登记状态：

工商注册地址：

工商成立日期：

工商企业类型：

发明人：

EGGINK, HENDRIK, JAN | DE JONG, BOUDEWIJN, RUBEN | DE SAMBER, MARC, ANDRE

代理机构：

VERWEIJ, PETRONELLA DANIËLLE

代理人：

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.

技术问题语段：

The technical problem of this patent is how to handle the heat generated by LEDs during operation while balancing the desire for the lighting device to provide a large amount of light. This is important because excessive heat can damage or shorten the lifetime of LEDs and cause other components of the lighting device to overheat and malfunction. Solutions such as heat sinks and heat conductors are used to dissipate the heat and balance the temperature. Additionally, limiting the current based on the temperature can also help protect the LEDs.

技术功效语段：

The present invention provides an improved lighting device with increased heat dissipation and power capacity. By splitting the lighting engine into at least two thermally separated sub-engines, each with its own thermal environment, the sub-engines can operate at maximum temperature and light output. The sub-engines can also be individually driven based on their thermal environment. The lighting device may also include a shell made by additive manufacturing, which allows for different shapes and forms. The invention also allows for the regulation of electric current or power to each sub-engine, and the orientation of the lighting device can be determined without an orientation sensor. The power applied to each sub-engine can be adapted based on the orientation of the lighting device.

权利要求：

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) common to the sub-engines and 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, and wherein each sub-engine may adapt and operate at a maximum temperature and light output based on the present thermal environment. 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) common to the sub-engines and 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, and wherein each sub-engine may adapt and operate at a maximum temperature and light output based on the present thermal environment.

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