| 摘要 |
A lighting device is provided to use the heat diffusion characteristic of the thermal conduction member having the anisotropy heat conduction characteristic. A main body(11) comprises a lighting unit having a lighting element on a board at its upper place. The main body includes thermal conduction member having the anisotropy thermal conductance. The thermal conduction member has the heating surface heat-contacting the luminous unit. The anisotropy includes the first direction and the second direction. The thermal conductance to the second direction is higher than that of first direction. The heat transmission member intersects with the second direction. |
