主权项 |
1. A transmitter comprising:
a housing; an internal member fixed to the housing, the internal member forming a first area and a second area inside the housing, the first area communicating with an outside of the housing, the second area being liquid-tightly partitioned from the first area; a first unit disposed in the housing, comprising a first heat sink and a first circuit, the first heat sink being at least partially in the first area and the first circuit being in the second area; and a second unit disposed in the housing, comprising a second heat sink and a second circuit, the second heat sink being at least partially in the first area and facing the first heat sink and the second circuit being in the second area. |