Energy-saving lamps have withdrawn from the stage of history. At present, almost all household lamps are household LED lights.
However, there are so many LED lamps on the market that it is difficult to distinguish the good from the bad. This short article teaches you how to choose high-quality LED lamps.
LED lamps actually consist of three parts: driver, light source board, and heat sink. First, let’s talk about the driver. Normal household LED lights generally choose non-isolated drivers. This driver has average cost, high efficiency, and good reliability. The lights can work normally without being affect-ed by voltage fluctuations.
However, in order to compete with prices in the current market, many companies will use resistor-capacitor step-down or linear power supplies instead of non-isolated power supplies. These two power supplies have poor impact resistance. If a nearby thunderstorm causes a surge voltage, it will most likely cause damage. , can only work at the set voltage.
For example, 220V, as long as the voltage fluctuates, the light will also fluctuate, so when purchasing, be sure to check the input voltage range.
Resistance-capacitance and linear voltages are generally writt-en as 220-230v, and non-isolated power supplies are generally writt-en as 175-250v, and some can be 110 -250v voltage fluctuation has no effect on this lamp.
The chip inside will automatically adjust the duty cycle of the square wave to achieve stable output, so be sure to check the input voltage range when choosing.
Next, let’s talk about the light source board. At present, most of the LED light sources are weld-ed on the aluminum substrate. It is difficult to see the quality of the light source with the naked eye, but generally it is not a problem after a few years of use. But you can look at the light on the package. For color temperature, it is generally better to choose a color temperature below 6000k. European and American countries like a color temperature of around 3000k, which is slightly yellowish like the sun just rising in the morning.
In our country, we like whiter ones. Generally, 6000k is like the sun at noon. It is whiter, but more dazzling. It is best to choose a 4000k light source, which is more moderate. If it exceeds 6000k, the light is actually bluish. This is what is call-ed blue light hazard, so do not choose a color temperature above 6000k.
Finally, let’s talk about the heat sink. Since the LED light source generates heat when it is working, if the heat is not dissipated in time, it will damage the LED, so a heat sink is needed.
Generally, the bulbs on the market are plastic-coated aluminum heat sinks, which means they feel like plastic to the touch. , there is actually a layer of aluminum inside.
The greater the power of the LED, the greater the heat. Generally, the heat sink has a maximum power limit, so when buying a lamp, do not be greedy for high power. Generally, the A60 should not exceed 10 watts. If it exceeds the lifespan, it will be discounted.
How to choose LED lights
When we choose LED lights, the most important thing is to pay attention to blue light.
Blue light is very harmful, especially for children under 8 years old. (You can search on Baidu to learn about the dangers of blue light)
The light of LED is white light synthesiz-ed from three colors: red, yellow and blue, so the blue light in it is still unavoidable so far. There is also a lot of research on LED abroad to solve the problem of blue light. I hope that in the near future we will all be able to use LED lights without blue light.
It is upload-ed online that you can use your mobile phone to judge the strobe of LEDs. This is not a very accurate standard, and you have to make a comprehensive judgment from all aspects of light color.
Energy-saving lamps vs LDE lamps
Compared with energy-saving lamps, LEDs are more energy-saving and can make full use of light efficiency. Especially when the weather is cold, the phosphors in energy-saving lamps need to be fully preheat-ed before they can reach the brightness of the logo. LEDs are not requir-ed.
It is recommend-d to use neutral light with a color temperature of 4000K for children’s rooms
The living room can use lights that convert between three color temperatures (neutral light, white light, yellow light)
Ceiling fan lights are not recommend-ed for use in the living room. On the one hand, the light intensity is not sufficient, so they can be use-d in the dining room.
As far as household LED lights is concerned, yellow light is less harmful to the eyes, white light is more harmful to children’s eyes, and blue light is only more harmful to children under 8 years old.
How to choose the right lighting fixtures should pay attention to:
- If the light of the LED light is bluish, it means there is too much blue light, which is not good. White light is normal.
American-style lampshades are relatively thick, so it is recommend-ed to use white light bulbs.
- Choose the right size
- The style should match the overall decoration style of the home.
Lamps play the finishing touch. We must not only choose the style, but also pay attention to the light color. For simple Nordic style, choose simpler lamps. European and American chandeliers are more suitable.
- Pay attention to the quality and light color when choosing
♛ Popularize the issue of hanging lamp height:
Some customers say that the new Chinese-style and American-style lamps are so thin that they can be touch-ed with hands. uncomfortable!
The answer is: leaving aside the aisle, the best effect of the golden ratio is: the distance between the floor and the lamp in the living room is generally 1.8 meters to 2 meters, and the distance between the dining table and the lamp in the restaurant is between 0.85 meters and 0.95 meters.
Nowadays, we buy lights not only for lighting, but also for decoration and light effect, to create a warm and comfortable home.
How much wattage should you choose?
Generally, it is better to use 30-40 watt lamps for 10-15 square meters.
Generally speaking, if the living room is 15-20 square meters, it is better to use 70-75 watt lights. For 20-25 square meters, it is better to use 80-90 watt lights. For more than 25 square meters, it is better to use LED lights of 105 watts.
Our common lamps:
light strip
Nowadays, most of the flexible light strips are use-d, but now LED has come out with T5, which is brighter and more stable than light strips.
Because it is connect-ed one by one, it is convenient if a section in the middle is broken and needs to be replac-ed. But the light strip is more convenient to install.
spotlight
You can adjust the angle and focus the light. Generally, it can be use-d to highlight a certain point position. Designers prefer to use spotlights to highlight the effect.
downlight
It is flat, and most of its function is as a lighting embellishment.
It is recommend-ed to use 3.5-watt downlights. If the hole is open-ed in the ceiling, it should be between 7.5-8cm.
It is generally recommend-ed to use a downlight at a distance of no less than 60 centimeters. 80 cm or even 1 meter are also acceptable. If it is use-d for decoration, the number should not be too many.
molecular lamp
The choice of molecular lamp mainly depends on the material of its household LED lights source and its lamp body, as well as the workmanship of the glass lampshade.
Mainly suitable for Nordic style decoration
All copper lamp
The so-called all-copper lamp cannot be all copper. Because copper is relatively soft, it slips easily. The national standard is that the copper content is 60%, which can be call-ed a full copper lamp.
American and European styles are more commonly use-d in decoration.
corn light
Big corn brands don’t do much because they have technical bottlenecks and it’s difficult to achieve stable quality.
But its light-emitting area is large. If you buy a chandelier with a lampshade, you can use this corn lamp. It is generally not recommend-ed to use corn.
Halogen lamp
The light of halogen lamps is yellowish, and its color temperature is below 3000k. It is difficult to have a high color temperature, so it is not good for the eyes and the light environment is not very shaping.
filament bulb
They are actually imitations of previous tungsten filament bulbs, high-wattage filament bulbs. Currently, not many domestic factories can make them. Most of the current filament bulbs have a color temperature of 2700, which is generally use-d to create atmosphere. It may be a little worse for lighting.
This kind of household LED lights bulb looks better when used with most Nordic and American lamps, if it is European or simple. Putting a filament bulb may not necessarily look good
