Sunfree Lighting Limited is a high-tech company specialized in R&D and production of solar LED lights and LED lighting.

Why after dark street lamp is not bright?

by:SUNFREE     2021-01-30
LED street light for people to travel at night lighting and security. LED lights factory it is a solid cold light source, green pollution-free, less power consumption, high photosynthetic efficiency, long life, therefore, the LED street lamp will become the choice of road lighting energy saving transformation. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. The government really serve the people, the people's satisfied. LED street lamp which is a kind of based on semiconductor PN junction formation with a weak electricity can glowing efficient solid-state light source, in certain positive bias voltage and the electrical flow injection, injection of holes and injection P N the electronic after spread to have source area by the radiative recombination and emit photons, convert electrical energy directly into light energy. But after a period of time, found that evening lights not as usual, so I quickly will reflect this information to related personnel, quickly contact the relevant principals of LED street lamp manufacturers. Manufacturer replied that may be caused by the following reasons can't turn on the light after dark.

a, voltage controller battery under stress, not after dark lighting, but the battery voltage under the pressure value is more than this, indicates that the battery is charging. In a 12 v system, under voltage protection value of about 11. 1 v ( The controller default) 。 After the battery down to the point of the voltage, the controller will shut off the power and stop discharging, protect battery but release.

reasons solar panels on the battery during the day, and will be charged to the 12 v voltage before continue to discharge ( The controller's default value) In order to prevent deep discharge damage of the battery for a long time. Then, after the battery voltage, if the controller does not restart, 11. 1 or 12 v belongs to the state of undervoltage, must wait for the battery recharging to 12 v, and then continue to discharge. Solution

use solar panels or dc charger the battery voltage to 12 v or higher is enough.

2, controller if the LED lights are installed, and can be normally open a period of time, the controller failure. Be hit heavy current controller system is the cause of damage, such as direct lightning or short circuit, or may be the controller internal damage of electronic components. Solution

replacement controller, test the controller and check the response of the lamp. If the two lights are not bright, controller will be damaged, must be replaced.
3, LED light source dc power drive.
detection indicator light shows normal discharge of the controller, battery voltage is enough, the light is bright. At this point, the light of the positive and negative should be directly connected to the positive and negative of the battery. If you can't discharge, the LED light source dc power supply will be damaged. Need to change. Now the LED light source dc drive with the aluminum box of the controller in integration. Installation and maintenance more simple and more convenient. If a component is damaged, can be directly replaced.
customers encounter problems first think of the complaints about the LED street lamp manufacturers. In fact, if you buy products from normal manufacturer, don't worry about the quality problem. The main cause of these problems is the environment factors and improper use. Just contact the LED street lamp manufacturers in a timely manner to solve the problem. These are just examples to solve the problem of some common. If you have other questions, can contact directly with the LED street lamp manufacturers:
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