Here are some reasons that may cause this problem.
1. The current may be too large. You can measure the voltage and current of the power supply behind the lamp cap. The normal voltage is 12V and current 5A. If the voltage and current exceed the standard, the current needs to be adjusted.
2. Maybe there is a problem with the circuit. You should find a professional for inspection and maintenance.
3. It may be a problem with the bulb quality. Changing to a better quality bulb can solve the problem.
