| 摘要 |
A cooling unit main body having vapor diffusion flow paths which extend to the peripheral portion and capillary flow paths formed between the vapor diffusion flow paths and in a concave portion opposite region is provided with a thin concave portion in which an LED chip is mounted. Accordingly, heat from the LED chip can be easily transferred by what corresponds to the thinning of the concave portion, and successive circulating phenomenon caused by a refrigerant is repeated by the heat, and the heat is surely drawn from the LED chip by latent heat at a time when the refrigerant vaporizes, so that a heat pipe can maintain the light emitting state of the LED chip stably. |
