"important note concerning the installation of LED products:
"Excessive heat will cause LEDs to fail prematurely. "They must be operated in an ambient temperature,not exceeding room temperature, for maximum life time. "As the temperature rises above 23 degrees C, the life time goes down.
"Active cooling, such as a small fan, may be required if they are installed in a small enclosed space without ventilation."
Since summer weather temperatures go way above 23 degrees Celsius (73-74 degrees Farenheit) does this mean that LED light bulbs are useful only as refrigerator lights or in air conditioned rooms?
About two years ago I purchased from the C. Crane Company a LED light bulb indicated in their catalogue as item #20L. It contains 20 LEDs, produces light equivalent to at least 25W incandescent bulb, and is still functioning satisfactorily even though I did not take any precautions whatsoever to keep it cool. Unfortunately, this model has been discontinued, but the fact that the bulb survived summer temperatures suggests to me that the technology for manufacturing LED light bulbs tolerant to higher temperatures does exist.
I would appreciate it if someone here can recommend and provide references for vendors selling 120V LED light bulbs with standard household screw base connection, which produce light equivalent to 25W incandescent bulbs or brighter and which can tolerate summer temperatures.