Finnaly i decided ,if i make a job ,to make good job
I put one fan 3.5 x 3,5 cm for the summer,it will bring fresh air inside to plastic box , one thermical resistor 47 ohm for to is the glass clear from the humidity and frost ,one double switch 1 - off - 2, the summer it will is the position 1 for fan ,and the winter at position 2 for thermical resistor .
I beleive tomorrow it is finish.