Heat radiation structure of photovoltaic junction box

The utility model provides a heat radiation structure of photovoltaic junction box for install the heat dissipation of the diode component in the box of this photovoltaic junction box, including the radiator, be provided with the notch that contacts with this radiator on this box lateral wall all around, this radiator sets up a plurality of fin towards the one side in the box outside, this a plurality of fin protrusions in box lateral wall, this radiator opposite side and diode component fixed connection. The utility model provides a photovoltaic junction box is through exposing the radiator outside the box of photovoltaic junction box, just so make things convenient for to form the convection current between fin and the outside air and carry out natural cooling, and the fin of radiator exposes in the lateral wall of bottom half, and the heat of being convenient for more gives off, has further improved the radiating effect.