The nature of led wall washing lights in outdoor city lighting, and now with the acceleration of the development trend of big cities, new urban lighting projects in China's provinces are in full swing. led wall wash light good quality should be as smooth as water. So how should we assess the quality of led wall washing lights? Below, Kongming core light I will give you a simple and detailed introduction.

一、 Materials

pcb circuit board: At present, there are (according to quality, price) FR-1 cardboard, CM-1 semi-glass board, FR-4PC board, solar cells, high heat transfer solar cells, ceramic fiber board and so on. Rotten is non-flame retardant cardboard, the big end is ceramic fiber board, and the big should be FR-4PC board and solar cells.

Lenses: Lenses are divided into two categories according to raw materials PMMC (acrylic sheet) and PC. The relative transmittance of PMMC is high, which can achieve 95% up and down, and PC can achieve 89% up and down; PMMC is generally less than 80-90 ° C, while PC can do 110-130 ° C; Therefore, the best application of small output power lighting lamps is PMMC, and the application of high power PC. Electronic optical grade (including reflective materials) PMMC and PC raw material electronic optical private mold (precision less than 0.1um) is a good choice for lenses. The actual effect difference: the light is more detailed, the chroma is higher than 10%; Not easy to produce management center shadow spot.

Shell: led wall washing lamp shell base is all Lasen aluminum shell, better to add surface Yang oxidation treatment to solve, the difference is that the soft mark without treatment can not be washed off, the soft mark solved can be wiped down. The key is the specifications of the housing model specifications, the total area of heat removal, and the net importance of the heat removal index between the two to produce a smooth and suitable thermal equilibrium point, to prevent the continuous heating and lead to the destruction of LED lamp beads, in view of this, the design program is more purposeful private model goods.

Vehicle wiring harness: The material of vehicle wiring harness is all copper wire to prevent the application of some poor copper-clad aluminum low-quality vehicle wiring harness. In terms of method, it is better to use the method of selecting the bottom group to reduce the gap of the lamp arm in a larger level.

In addition, it is as far as possible to choose the moisture-proof quick pull on the connection head (the waterproof mat of the screw head is easy to fall off), if the construction site allows, the manufacturer can be stipulated to manufacture by string.

二、Route design scheme

What is not desirable is a single link, it is very easy to lose all. Many and few strings are preferred. In addition, the led wall wash lamp should reflect the power supply circuit for overcurrent protection in the route design scheme.

三、led driver

This is the focus option. Construction units generally tend to choose high-voltage drive products, the reason is simple wiring, and the actual comparison, Kongming core light is recommended to choose 24V low-straight drive, on the one hand, for sexual considerations, especially used in wooden structures, such as ancient buildings, wooden trestle road, etc., relative to the high pressure coefficient; On the other hand, the actual data statistics show that more than 80% of the reasons for bad wall washing lights appear in the drive or drive mode, and the low-straight drive products eliminate the occurrence of bad driving factors, unless it is a poor lamp bead. Therefore, LED products with low direct drive are usually called maintenance-free products. It should be noted that low direct drive installation should pay attention to avoid line voltage drop, so the wiring should follow the principle of "average power".

In short, the choice of high-power wall washing lights is also a cost-effective comparison and choice, compared with quality, price and project positioning. What is appropriate is good. Wall washing lamp quality is the basis, pretend to be a item. We can compare and choose from the above aspects when identifying the quality of the wall washing lamp.

The choice of wall washing lamp is also the comparison and choice of cost-effective, compared with quality, price and project positioning. What is appropriate is good. Wall washing lamp quality is the basis, pretend to be a item. We can compare and choose from the above aspects when identifying the quality of the wall washing lamp. ---- wall washing lamp manufacturers