LED landscape lights generally operate outdoors, and due to temperature differences, thermal expansion and contraction is the main cause of outer shell cracking. Currently, the best solution is to choose materials with the smallest thermal expansion and contraction coefficient for production.
Cracking caused by thermal expansion, contraction, and internal stress is due to the outer shell. If materials with water outlet properties are chosen, it becomes difficult to eliminate internal stress, leading to an increased likelihood of cracking in the outer shell, even with better materials.
Unreasonable design and production processes can also generate significant internal stress. Experienced landscape light manufacturers will select constant temperature protection during injection molding to minimize internal stress, employing various physical methods to eliminate it.
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