Why is the newly purchased LED light not bright enough?

Home decoration, all bought LED lights, according to their recommended light source, living room chandelier 8 7W LED bulbs , restaurant 3 5W LED bulbs, a circle around a total of 12 5W downlights, 30 square meters, However, I feel that it is not bright enough. If it is all open, it is still stubborn. If only the headlights or only the downlights are turned on, the brightness is too low. Doesn't it mean that the LED lights are very bright? Why can't I do this?

1:30 square area, according to the current LED luminous efficiency, to reach the total power of about 70W is enough, see the configuration of your home below

Chandelier 7W*8=56 watts

Downlight 5W*12=60 watts

Meal hanging 5W*3=15W

In fact, the difference is not big, all your light source power configuration is not much problem.

2: Why is it fully open and bright enough to open alone?

Let me talk about the case where the downlight is only turned on. The downlight is definitely installed around the wall around the room.

If only the downlights are turned on, their lights are basically illuminated on the wall. Only the side light can be poured into the middle of the room, and a little light from the wall is emitted. Especially now, there are generally wallpapers, and the reflection efficiency is not high. All if you only point the downlight, the middle of the room will definitely not be bright enough. Because the design of the downlight is originally used as an auxiliary lighting or decoration, unless you are in the middle of the room, it is not suitable as the main illumination source.

3: Is it only bright enough to open the chandelier?

The chandelier is generally used in either case, on the left, the bulb is mounted downwards (the cover opening is facing down) and the right bulb is mounted upwards (the cover opening is facing up).

The chandelier is generally used in either case, on the left, the bulb is mounted downwards (the cover opening is facing down) and the right bulb is mounted upwards (the cover opening is facing up).

If you choose a chandelier like the left side, then you will not have any problems with the LED bulb, 8 7W is definitely enough.

But if your chandelier is on the right side and the light bulb is facing up, then the problem is coming.
First of all, because the LED bulb is not 360-degree, the light of all LED bulbs is basically concentrated in the range of about 150 degrees in front of the bulb, so if your chandelier is on the right side, the bulb is installed upwards.

So if your chandelier is on the right side, the light bulb is mounted upwards; the light of the light bulb goes up first, shines to the ceiling, and then reflects the ground and the wall through the ceiling. The light loss during this reflection is very serious, at least 30 %the above.

The light of the light bulb goes up first, shines to the ceiling, and then reflects the ground and the wall through the ceiling. The light loss during this reflection is very serious, at least 30%.
Therefore, if you are a chandelier with an opening up and use a normal light bulb, you must increase the recommended power by at least 30%. That is, eight 7W bulbs should be replaced with eight 9W-10W bulbs.
However, if the lamp power is changed, another problem will arise. Because of the problem of the angle of illumination of the ordinary light bulb mentioned above, the chandelier installed upward will have this very obvious spot on the top of the lamp. If you change the bulb, Then the brightness of this spot will increase. Simply put, this spot will be very glaring, because it concentrates 80% of the brightness of the chandelier bulb.

Because of the problem of the angle of illumination of the ordinary light bulb mentioned above, the chandelier installed upwards will have this very obvious spot on the top of the lamp. If you change the bulb, the brightness of the spot will increase. Simply put, This spot will be very glaring because it concentrates 80% of the brightness of the chandelier bulb.
Recommend a light bulb specifically designed to solve this chandelier problem. The light-emitting structure of this light bulb is different from that of a normal light bulb. 90% of his light is backlit, so I named him a light-emitting bulb.

The light-emitting structure of this light bulb is different from that of a normal light bulb. 90% of his light is backlit, so I named him a light-emitting bulb.

His luminous distribution is like this.

His luminous distribution is like this.

So you may not have a concept, change the actual comparison chart

It is obvious that you can see the difference, and you can imagine the difference between them installed on the chandelier.

It is obvious that you can see the difference, and you can imagine the difference between them installed on the chandelier.

In fact, the effect comparison after they are installed is like this.

Tested with the same power with the same chandelier, on the 8 7W chandelier, the ordinary light bulb and this bulb, the illumination at the same position of the coffee table is as follows

Tested with the same power with the same chandelier, on the 8 7W chandelier, the ordinary light bulb and this bulb, the illumination at the same position of the coffee table is as follows

Actually tested, the brightness difference is about 20%, which is close to the 30% loss of the ordinary bulb after it is launched through the ceiling.

Actually tested, the brightness difference is about 20%, which is close to the 30% loss of the ordinary bulb after it is launched through the ceiling.

But the point is that the uniformity of the entire room is much more uniform.

Therefore, another possibility that your home only has a chandelier that is not bright enough is that you have not chosen the right bulb.

Finally, this inverted light bulb has many restrictions on use. Such a chandelier cannot be used because the light transmittance of the cover is too low. In addition, the diameter of the light bulb is 75 mm, and all the opening of the cover is less than 80 mm.

Such a chandelier cannot be used because the transparency of the hood is too low. In addition, the diameter of the bulb is 75 mm, and all hood openings of less than 80 mm cannot be used.
It is most suitable and only suitable for the following and more than 80 mm between the covers.

Although LED lights have many advantages, they also have many shortcomings. The biggest drawback is that it is not 360-degree light, which results in poor performance on many traditional lamps. You can still find this chandelier. The lamps are even more tragic.

When you encounter such a chandelier, the bulb is installed horizontally, and you can basically say goodbye to the LED bulb. Although there are horizontally inserted LED lights,

When you encounter such a chandelier, the bulb is installed horizontally, and you can basically say goodbye to the LED bulb. Although there are horizontally inserted LED lights, but generally horizontally inserted LED lights are relatively long, many lamps can not be installed, do not have enough power, hard to do high power in short size, heat is not enough, so encounter To such a horizontal plug installation, it is best to use tungsten or energy-saving lamps.

However, the horizontally inserted LED lights are relatively long, many lamps can not be installed, short power is not enough, hard to do high power in short size, heat is not enough, so encounter such a horizontal plug installation, the best Just use tungsten or energy-saving lamps. Popularly speaking, led is very bright, which means that its light efficiency is high, that is, the unit watt transforms the lumens visible to the adult eye. Its light effect is much higher than that of ordinary incandescent lamps. The landlord thinks it is dark, if the wattage is not Change, change to other types of bulbs, it will be darker~