Super detail! OPPLE 4W downlight dismantling

The dismantling is mainly for packaging, lighting appearance, face ring, spring, mixed light plate, mixed light paper and light source module to do a detailed analysis, I hope these analysis can bring some help.

First, let's look at the packaging:

1, the inner box should be used in the three layer (Dan Keng): the F type corrugated paper (on the packaging material not much if wrong please correct), printed on the surface of the lamp appearance map and clear details, include: the use of voltage, current, rated power, temperature, lumens etc.. As can be seen from Figure 4, the disassembly model is 4W, 5700K, 270lm. It's the real data, we have the following test.

2, the inner box structure is fixed lamps, we usually use the internal structure, there is no above, because the structure is universal.

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

1, you can see the surface of the ring is a white plastic parts, after the flame test, I infer that the material should be 94V0 PC.

2, spring bracket is two pieces of iron, probably 1.5mm thick.

Aluminum Alloy cup 3, radiator is the use of a spinning or formed by stamping, surface oxidation and playing in the sand, parameter label affixed with a lamp.

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

Disassembly start:

Here is a place of care: the whole lamp from the surface, there are only two pull nails for the connection between the parts, in addition to the power box pressure line of the two screws, you can not find the third screws.

1, when we put the ring and the radiator (cup) to separate, you can from the above four drawings to understand the structure of the lamp is probably:

The a:LED light source plate is fixed on the outer cover power box through the three M3 screws, and the radiator (cup) is formed into a light source module.

B: the plastic surface ring, the mixed light plate and the spring bracket are combined together to form a module.

C: the two module uses the way of pulling the universal hole to the hole: the spring bracket - the face ring - radiator (cup), to carry out a fixed connection.

Face ring:

1, Mianhuan previously said it is using the PC material of white fire, the usual practice is a mold, rarely two processing, but the ring is a little special: its surface sprayed with a layer of pale silver with sand paint (the camera too bad not displayed). The surface looks than ordinary PC plastic parts have more texture and grade, of course, the cost is not a grade (a product to increase 5-7 hair ah). But I guess it sprayed a layer of paint, it has another purpose, is to want to melt it off the wire.

2, and everyone here to focus on its structure, first we will know if the thickness of plastic products or local product material will cause severe shrinkage phenomenon, if there is the appearance of the product will affect the appearance of the surface, the formation of bad products. So a plastic cylinder embedded lamp surface is the most likely to appear uneven wall thickness or local accumulation of material where is it? A and B two. You can see from the above diagram, two different sides have different treatments on A and B: it is a 2 ring die forming, in order to increase the strength, avoid spring stent fracture or overall appearance deformation during use, A, B two must be thickened, so local accumulation of materials it will form, will also have the problem of shrinkage. And it is the 1 ring at B "thickness" One divides into two. two thick walls, forming a relatively thin ring, and reinforcement connection, without affecting the strength of the case to solve the problem of excessive accumulation of materials; while at A it directly with sheet metal instead, is also this meaning. Of course, the paint mentioned above also has the role of occlusion.

Spring

Here I want to talk about it with spring: OPPLE this lamp is used in our country traditional lamp. A very common spring A (as for what his name is, I really forgot), this spring, convenient installation: whether the lamps in the production process, or go to the hands of customers using the terminal very simple and fast. OPPLE's approach is to use this pair of springs with a small bag installed, and then directly into the inner box, and finally let the guests have their own installation, which can save a lot of labor costs. Of course, this spring from the slow, not on the grade, its own high cost is also its shortcomings. As for Europe spring B, many domestic manufacturers are in use, since the amount of fast, relatively cheap, quality is its advantages; but its shortcomings are very obvious: the installation difficulties and direction, not to mention the customer, some structural engineers if once no contact is not installed. Therefore, the use of this spring must be installed on the production line to the entire lamp shipments, labor costs will certainly increase.

Mixed plate:

It was a mixed light and mirror grinding surface, in the dismantling I noticed that the mirror is outward, grinding surface inward, the effect of this is: in the light inside the lamp fully "mixed" after the play, the eye looks more light. This treatment is the same as mine.

Mixed light (reflective) paper:

This is a kind of PET called mixed light (reflective) paper, the current domestic manufacturers do not use too much. We know that most of the reflectors are now made of aluminum or plastic, which will be reflected in the light