While cameras are designed to be used in the great outdoors, they are not immune to it. Over time, the temperature, air and humidity of the environment can take its toll. Which is why its important to insure it is protected to the best of its owners ability against the elements.
Protecting a camera against heat is a difficult task. You simply cannot control the temperature of the weather. But you can control the heat generated inside the camera.
One way to do this is by particularly switching off unnecessary functions. For instance, not using the LCD screen will cause the camera to not use as much electricity, thus generating less heat. Other features such as HD recording, battery packs and image sensors will generate a considerable amount of heat. These also often have the option of being switched off without losing the ability for the camera to take recordings.