The buried light of the nominal IP67 is still leaking? It may be these catastrophes!

LED semiconductor lighting network news many people may have such doubts in their work, that is, when doing a lot of projects, the use of the nominal IP67 buried lights, confirmed that there are test reports prove IP67, and many of them are International brands, but still find leaks.

Then the IP67 buried light will leak water?

To understand the cause of the leak, you must first understand what IP67 stands for.

I don't know what IP67 means. Students can check: "Landscape lighting | The type of underwater light and application details" "iPhone 7 is IP67, what does IPXX mean?" Click on the topic to read, understand the IP of the fixture waterproof level.

The reasons for the leakage of the buried lamp are summarized as follows:

1 design is not reasonable

2 material defects

3 process defects

4 reasons for installation

1. Unreasonable design

For example, some of the lamps are filled with glue. When the lamps are shipped from the factory, the waterproof level is really no problem, and there will be no water leakage.

However, in an outdoor environment, it will start to age and turn yellow after about half a year, and the lamps will enter the water.

Therefore, the waterproofing of the glue is not reliable, and the waterproof structure is the king.

Teacher Xu said: "Because the unreasonable design of the product is not qualified, it should not exist."

Some of the lamp covers are not pressed, and the manufacturer does not press a few more points. It is important to know that buried lights are often in an environment that is eroded by water, and it is easy to leak water if the cover is not pressed properly.

There are only 3 screws in such a large luminaire. The distance between the screws is very far. Do you think it is pressed tightly?

Such a lamp cover is not pressed, and it will definitely be tilted up.

So filled with glue, do you think it will be waterproof?

The lighting of this international brand in the picture below does not have glue. Let's see how many screws are used above?

4 on the left, 4 on the right, 2 on the top

1234567... There are ten screws in total!

The several lamps mentioned above are honestly difficult to pass the IP67 test. And even if you pass the IP67 level test, it doesn't mean you won't leak! Defects in the structure of the luminaire can also cause water leakage.

General test: Under a certain temperature condition, the water test is carried out, and the bubble is not leaked for a period of time, even if it passes the IP67 test certification.

â–² Come here! Soak a bubble!

However, in the actual work process, the use environment of the lamps is complicated. When the sun is hot, it will become hot. When it rains, it will become cold. It will expand and contract. When the air inside the lamp is turned on, it will expand. When the lamp is turned off, the air will be compressed. Therefore, the effect of such a cycle is called the respiratory effect. The pressure ring of the luminaire will be subject to the change of air pressure caused by the breathing effect, which will cause the buried lamp to leak water.

This is the irrational structure of the luminaire, which leads to the durability of the luminaire.

2, the defects of the material

Defects in the luminaire material cause the lamp to leak.

This is related to the key materials for waterproofing lamps. Waterproof nuts, sealants, silicon rings, etc., often perform well when just installed, but the durability is not enough.

The poorer silicone ring aging in two months. When it is often sun-dried, it will break into the water and go in. This is premature failure and does not reach the design life.

Even if the apron is not aged, if the silicone strip is not selected, it is not an inorganic material, but the organic material is likely to be affected by the mold, and then it will leak.

So the choice of materials is also very important~

3, the defects of the process

For example, when assembling, the lamp should be mounted to the entire pressing ring of the lamp to be dense. Each screw has its own fixed torque. If it is pressed too tight, it will crush the apron, and the too loose rubber ring will not be tight enough, so there will be a fixed torque.

â–²The company with quality assurance is designed with torque, and it can be put in place with a batch of wind or electric batch.

â–²This product is the electric batch artifact~

And the company that has no design and no conditions is just screwed when assembling, so it is strange to not leak!

Then, if it is a well-known international brand, the lighting design is reasonable, and the appropriate materials are used. Will such buried lights not leak?

The answer is certainly not!

Is there still water leaking at this time? why? There is only one possibility at this point: the reason for the installation.

4, a reasonable installation method

1 installation is not stable

The general possibility is that the installation is not stable. One side is high and low, plus the pressure of pedestrians or cars. Therefore, the position of the pressed apron will lose its elasticity due to excessive pressure - and then it will leak.

2 "short-term waterproofing"

If the drainage treatment is not good, the lamp will leak when it is soaked for a long time. The IP67 of the buried light represents a short time waterproof. The one that does not leak water for a long time is the IP68 grade lamp - underwater light.

Buried lights can't be soaked for a long time. When installing buried lights, they often draw such a large sample of installation:

â–² There should be a large space under the luminaire. There should be gravel and sand under the empty, and there should be a drain at the bottom. This will drain the water and will not allow the lamp to soak in the water for a long time.

â–² gravel, broken sand.

â–² drain pipe.

If the buried lamp is soaked in water for a long time, the environment is worse than in the pool. Because the ground is often cleaned with a cleaning agent such as oxalic acid, oxalic acid is corrosive and can invade the lamp to erode the lamp, then it will naturally leak.

Then if the installation is smooth, there are drainage measures, is this all right, will not leak?

Unfortunately, even if you reach this level, there is still a chance to bury the lights! leak! water!

3 power wiring

Another possibility for water leakage is the power wiring.

Ordinary tape connection is not waterproof, because the water vapor will enter the interior of the lamp along the gap of the tape wrapped around the wire, forming a drop of water mist inside the lamp.

So the reasonable way should be to use a waterproof junction box. The junction box is filled with soft rubber, and the soft plastic junction box sinks the thread under the ground and the sleeve is set so that any water vapor will not go in.

â–² Filled with a soft junction box.

â–² casing is good~

Finally, say two more! ! !

There are also a lot of buried lights that will leave two waterproof heads and males plugged in, so that the sleeves are waterproof when they are tightened.

In fact, it is not waterproof!

â–² waterproof male and female plug

In fact, due to the tolerances of the male and female inserts, the quality of the quality and other human factors will lead to leakage from the gap.

Therefore, the insurance method is to put a tape on the outside of the male and female plugs, and put on silicone rubber, which is double insurance.

Old-fashioned lamps need to be tightened during construction. The order of tightening is very particular. It should be tightened one by one in the direction of the screws. Tighten a little bit first - then gradually tighten until all is tight, so that it will be pressed tightly.

However, the integrated luminaires now do not need to be screwed.

â–²The buried lamp does not need to be screwed at all.

When installing such a luminaire, you only need to pay attention to the wiring problem. The waterproof work can be handed over to the factory.

The water leakage problem of the buried lamp is either due to the unqualified quality of the lamp itself, or the water leakage due to the installation.

Knowing the reasons for the leakage of buried lights, how to deal with the leakage of buried lights you should be able to get it!