Why does my road light dim or not light up after 1 minute, especially when it rains?

Street lamps may be dimmed or not lit after 1 min for the following reasons:

1. power supply problem: there may be problems in street lamp power supply, such as unstable voltage or poor wire contact. In this case, the street lamp may be dimmed or not lit due to power supply problems after being lit for a period of time.

2. bulb aging: the bulb used in street lamps may be used for a long time, and the filament may be aging or burned out. In this case, the bulb may be dimmed or not lit because of filament problems after being lit for a period of time.

3. Temperature influence: rainy weather will cause the temperature around street lamps to drop, and the brightness and life of light bulbs will be affected by temperature. In low temperature environment, the brightness of the light bulb may be reduced or not lit at all.

4. Moisture influence: rainy weather will increase the moisture content around the street lamp, and moisture may enter the inside of the bulb, leading to short circuit or other failures of the bulb. In this case, after lighting for a period of time, the light bulb may be dimmed or not lit due to humidity.

In order to solve this problem, the following measures can be taken:

1. Check the power supply: check whether the street lamp power supply is stable, and repair or replace the power supply equipment in time if there is any problem.

2. Replace the light bulb: replace the light bulb used in street lamps regularly to avoid brightness reduction or failure due to aging or burning of the filament.

3. Keep the temperature stable: In cold weather, heat preservation measures can be considered, such as wrapping street lamps with heat preservation materials to keep the surrounding temperature stable.

4. Moisture-proof treatment: For street lamps that are prone to moisture, moisture-proof measures can be taken, such as installing a moisture-proof cover around the bulb to reduce the influence of moisture on the bulb.

In a word, the street lamp becomes dim or not bright after 1 min, which may be caused by power supply problems, aging of light bulbs, temperature influence or moisture influence. This problem can be solved by checking the power supply, replacing the light bulb, keeping the temperature stable and moisture-proof treatment.