| 摘要 |
The present invention relates to a lighting device. According to the present invention, the lighting device includes: a heat-releasing unit comprising a first heat-releasing part having first thermal conductivity, and a second heat-releasing part having second thermal conductivity smaller than the first thermal conductivity; and a light source module comprising a substrate and a plurality of light-emitting devices arranged on the substrate. The second heat-releasing part comprises an inner part, an outer part surrounding the inner part, and a first accommodation part formed between the inner part and the outer part. The first heat-releasing part comprises an upper part placed on the outer part of the second heat-releasing part and having at least one hole, and a lower part placed in the first accommodation part of the second heat-releasing part. The heat-releasing unit additionally includes a connection part connected to the inner part and outer part of the second heat-releasing part. The first heat-releasing part, the second heat-releasing part, and the connection part are integrally formed. The top surface of the inner part of the second heat-releasing part comprises a first surface, a second surface placed lower than the first surface, and a side surface connecting the first surface and the second surface. The end portion of the connection part has at least one protruding part or groove part. According to the present invention, the lighting device has advantages when manufacturing the heat-releasing unit using an insert injection method. |
