Super detailed! Op 4W downlight dismantling

First let's take a look at its packaging:

1. The inner box should be made of three-layer (single pit) corrugated paper: F 楞 (not much research on the packaging materials, if correct, please correct), the surface of the luminaire outline drawings and detailed information, including: Use voltage, current, rated power, color temperature, lumens, etc. From Figure 4 we can see that the disassembly model is 4W, 5700K, 270lm. How is its actual data, we have the test below.

2, the structure of the inner box fixed luminaire is the internal card structure we usually use, here is not the picture, because they are more common structure.

Now let's look at the appearance of the luminaire:

1. It can be seen that the surface ring is made of white plastic. After the flame retardant test, I infer that the material should be a 94V0 PC.

2. The spring bracket is two pieces of stamped iron, which is about 1.5mm thick.

3. The radiator is an aluminum alloy cup that is spin-pressed or stamped. The surface is oxidized and sanded, and a parameter label of a lamp is attached.

4. The top of the radiator is a fixed external power supply.

Disassembly begins:

Here is a place to care: the entire luminaire looks from the surface, there are only two rivets to make the connection between the parts, in addition to the two screws of the power box pressure line, you can not find the third screw.

1. When we separate the face ring from the radiator (cup), we can get a preliminary understanding of the structure of the lamp from the above four pictures:

a: The LED light source board is fixed to the power supply box of the cover by three M3 screws together with a heat sink (cup) to form a light source module.

b: The plastic face ring, the light mixing plate and the spring bracket are combined to form a module.

c: The two modules use the way of pulling the nail to the hole: the spring bracket - the face ring - the radiator (cup) for the fixed connection.

Face ring:

1. It has been said in front of the face ring that it uses a white fireproof PC material. Usually, the mold is formed once, and there is very little secondary processing, but this face ring is a little special: its surface is also sprayed with a light layer. Silver with fine sand paint (the camera is too bad to show), so the surface looks more textured and superior than ordinary PC plastic parts, of course, the cost is not a grade (a finished product needs to increase 5-7 hair what). But I guess it sprays a layer of paint and it has another purpose, which is to block its melt line.

2, here we want to talk about the structure of everyone, first of all we will know that if the plastic product is uneven or partially accumulative, there will be serious shrinkage. If it appears on the surface of the product, it will affect the appearance and form a defective product. . So what is the most prone to uneven wall thickness or local accumulation of a plastic tube-embedded surface ring? It is two places A and B. As can be seen from the above figure, the two different face rings have different treatments for A and B: Face ring 2 It is a mold once formed, in order to increase the strength, avoid the spring bracket break or overall appearance during use. Deformation, A and B must be thickened, so that local accumulation will form and shrinkage will occur. The face ring 1 divides the "thickness" at B into two, forming two rings with relatively thin wall thickness, and then connecting with the ribs to solve the problem of excessive accumulation without affecting the strength; It is replaced directly with a metal sheet, which is also the same. Of course, the paint mentioned above also has the function of this occlusion.

spring:

Here I want to talk about the spring it uses: Ou Pu this lamp is a spring A that is very common in our traditional downlights (as for the name, I really forgot), this spring is large, installed Convenience: Whether it is in the production process or in the hands of the end customers, it is very simple and fast. Op's approach is to install the pair of springs in small bags, then directly into the inner box, and finally let the guests install themselves, which saves a lot of labor costs. Of course, this spring has a slow start, no grade, and high cost. As for the European standard spring B, many domestic manufacturers are using it. The speed is fast, relatively cheap, and the upper grade is its advantage; but its shortcomings are also obvious: the installation is difficult and the direction is divided, not to mention the customer, some structural engineers It will not be installed if it has not been touched before. Therefore, the use of this spring must be installed on the production line in order to ship the whole lamp, and the labor cost will of course increase.

Light mixing board:

The light mixing plate is divided into a mirror surface and a frosted surface. In the disassembly, I noticed that the mirror surface is outward and the sand surface is inward. The effect of this is that the light is fully "mixed" inside the lamp. Playing, the human eye looks more even. This process is the same as ours.

Mixed light (reflective) paper:

This is a kind of mixed light (reflective) paper called PET, which is not used by domestic manufacturers. We know that most of the reflectors now use aluminum or plastic plating, which absorbs light and absorbs a part of it, reducing the luminous flux. Its function is to prevent the light from being absorbed too much inside the lamp, helping the light to be fully reflected and mixed in the interior of the lamp to increase the amount of light emitted. According to the manufacturer, the PET reflectivity of good quality can reach 120%. As for how to calculate it, I still don't know. However, the idea is that if the quality of this reflective paper is not enough, after a period of lighting, it will be about 3-4 months. If PET is heated, it will appear wrinkled, deformed and “dropped powder”. I am deeply hurt!). Another point to note is the way it is assembled. It has a small swaying door. You can compare it in Figure 1 and 2 above.

Light source module:

As can be seen from the figure, the 7 5730 LEDs are connected in series on a single substrate. The LED parameters are also indicated on the box and the label is 0.5W. Without the three screws, the LED light source board, the heat sink (cup) and the external power supply can be separated. Since the structure here is relatively simple, it will not be described in detail. Only in the figure can be seen that its substrate material should be FR4, and the contact table with the radiator (cup) does not use the usual process we use: coated with thermal grease .

Finally, let's take a look at its photoelectric parameters:

The lighting effect of this luminaire is quite satisfactory: there is no dark area evenly, and the light is softer. The luminous flux is slightly lower than the nominal, only 216 lm. And everyone is concerned about the temperature rise of the LED, I have tested the temperature of the LED soldering foot is about 80 degrees, this temperature is no problem, it will not cause the life and light decay of the LED. From this point of view, it can also be reversed to explain why it can use the FR4 substrate and not apply thermal grease.

Landscape Lamp lighting is decorative light source configuration of city garden landscape,cultural and recreational square and large-scale social activities widely used and essential,is a decorative lighting products.Rod material diverse use of flexible,light,sound,light,electricity three-in-one,structure and morphology in different poses and with different expressions,beautify,lighting,green organic combination,light and shadow,perfect crystal lamp and art.

landscape lamp lighting

landscape lamp post supplier

1. Decorative landscape lighting products.Design style or abstract avant-garde such as artistic sculpture, or simulation realism such as natural normal elements can beautify the lighting environment and become a symbol of the national culture in a city.Whether it is a large cultural square or a fashion building community, there is a reason for it.Excellent viewing and use value.

2. applicable place:Park, courtyard and upscale residential area, road side, commercial pedestrian street, leisure plaza, scenic tourist area, etc.

3. material description:Steel lamp body, the whole high quality hot dip galvanizing after electrostatic spraying, not rusting, aging, surface clean.The light source is metal halide lamp, energy-saving lamp and LED.



Landscape Lamp

Landscape Lamp,Landscape Lamp Post,Landscape Lampshade,Landscape Lamps

Jiangsu chengxu Electric Group Co., Ltd , https://www.satislighting.com

Posted on