| 摘要 |
The present invention relates to a lighting device. Particularly, the present invention relates to a technique for minimizing size and manufacturing costs by minimizing the installation number of an LED lamp while securing a maximally wide light emitting range. In addition, the present invention relates to a technique for reducing energy consumption by consuming part of reference power amount supplied from the outside, and emitting light as bright as the light emitted by using the entire supply power even if power consumption is reduced. Furthermore, even if part of the reference power amount supplied from the outside is used, proper luminous efficiency of brightness can be obtained, and manufacturing costs can be reduced as well since a heat radiation structure is not required. Accordingly, the structure can be simplified. |
