As a new type of road lighting product, module street lamp has the characteristics of high efficiency, energy saving, stability and reliability. The luminous efficiency is several times higher than that of the high pressure sodium lamp used in traditional road lighting. The lamp has a long life, low power consumption and relatively low light decay. It is small, and the brightness remains unchanged after one year. It is more than 60% energy-saving than ordinary street lamps. It is an ideal lighting choice. Do you know the design requirements of module street lamps?

In the market, common module street lamp power supplies use constant current power supplies, which are determined by the characteristics of LED lighting materials. These materials are greatly affected by the environment. Long-term operation exceeding the rated current will greatly shorten the service life of the lamp beads. The current source can play a role in ensuring the stability of the current. The module street lamp design has the following requirements:

1. The characteristic of the module street lamp for lighting is that it has the function of directional light emission, because almost all power LEDs are equipped with reflectors, and the efficiency of such reflectors is significantly higher than that of lamps.
2. The efficiency of the self-reflector has been included in the light efficiency test of the module street lamp. Module street lamps using LEDs should use the characteristics of the directional emission of LEDs as much as possible, so that each LED in the module street lamps directly emit light to each area of ??the illuminated road, and then use the auxiliary configuration of the lamp reflector. Light, to achieve a very reasonable comprehensive light distribution of road lamps.

The power system of module street lamp is also different from traditional light sources. The constant current drive power required by LED is a cornerstone to ensure its normal operation. Simple switching power supply solutions often bring damage to LED devices. How to make a group of tightly packed LEDs safe is also an indicator for investigating the module street lamp. The requirement of LED on the drive circuit is to ensure the characteristics of constant current output. Because the junction voltage is relatively small when the LED is working in the forward direction, ensuring the constant LED drive current basically ensures the constant output power of the LED. For the current situation of unstable power supply voltage in China, it is very necessary for the drive circuit of module street lamp with LED to have constant current output characteristics, which can ensure the constant light output and prevent the over-power operation of the LED.