I made for your note
system of forced air cooling As phone running Megakombayna from GrAnd1 in conjunction with DVR VideoReg + navigation (using Yandex Navigator, and he is a power-intensive programs) + MapcamDroid + hot weather + sun + charging - phone very quickly overheated above 65 degrees and android cut off the charging , there were failures ...
All this cost me 300 rubles (purchase price of 2 fans) and an evening time.
Now, after tests carried out by me at full load: Megakombayn + VideoReg (recording in background, preview window on the screen) + Yandex Navigator + MapcamDroid + translucent hours + charger connected - phone temperature in clear weather but no direct sun on the phone - 46- 48 degrees, with direct sun on the back of the holder - temperature 48-51 grudusov in direct sun on your phone screen - the temperature 54-55 degrees, longer increase was not observed temperature. True car with climate control, but the cold air, for the purity of experimentation on the holder did not direct.
What is needed: two case fans (size 40x40x10 mm and 25h25h10 mm, 12 volt, the turnover and the volume of pumped air not paying attention, I do tend to think that the most hilenkie), micro-switch (required for supplying power to the fan when the phone is inserted into the holder) slightly shrinking (go and duct tape), a piece of plastic for the bottom under the fans, screws, soldering iron, side cutters, drill, broach, I still have the engraver the Dremel, but without it you can do (I have them do a large-diameter holes), from the old cable broken charging (in the photo, he twisted, you need to supply 12 volts to the fans, I soldered it to the board Auto Chargers after the fuse).
On the part of the whole system does not refer to "farm", I say this honestly was afraid to understand that it is necessary to look closely to the car, with a meter at all like a normal holder ...
On the note can be increased if the fan size to 50h50h10 mm and put additional 25h25h10 mm, if everything is still overheating, just make a reservation - I have a car with air conditioning ...
Shot view of the rear holder
At the bottom of the holder is mounted in the center of the micro-switch
For other phones, I think this also can be done, you need only to fans on the size should. About the noise when the machine is plugged - that fans heard, and when riding them did not hear.
Then I plan to paint the cap screws in black ...
Curators - can add a post in the hat?