bóng đèn LED have been around for a while now and are popular because of their energy efficiency and long lifespan. But many wonder how LED lights work exactly.
Here is a quick version: Đèn LED được tạo thành từ hai loại vật liệu khác nhau được kẹp lại với nhau. Khi dòng điện đi qua diode, nó làm cho các electron trong vật liệu chuyển động xung quanh, tạo ra ánh sáng.
In this article, we’ll walk you through everything you need to know about LED light bulbs.
From its history to buying tips you need to know, we’ve got you covered. Let’s get started!
Bóng đèn LED hoạt động như thế nào?
LEDs work on a simple principle: when current passes through a semiconductor material, it emits energy in the form of light. This effect is known as sự phát quang điện.
At the core of an LED bulb is the light-emitting diode itself, which is made of a semiconductor material.
It’s two layers of semi-conductive material separated by an insulator called the junction.
When electricity passes through the junction, it excites the electrons in the semiconductor material, and they release energy in the form of photons.
The amount and type of light produced by an LED depends on how much electricity is passing through the diode.
By controlling the voltage through the diode, engineers can create different lighting effects.
What is an LED Light Bulb, and What are its Types?
Bóng đèn LED tạo ra ánh sáng bằng cách sử dụng điốt phát sáng. Màu sắc của ánh sáng phụ thuộc vào thành phần của vật liệu bán dẫn được sử dụng trong đèn LED.
The color of the light depends on the energy band gap of the semiconductor material used. Different materials can produce different colors of light, including white light.
Two main methods are used for creating White LEDs:
- Phosphor coatings: A blue or ultraviolet LED is coated with a phosphor material, usually a yellow phosphor-like cerium-doped YAG (yttrium aluminum garnet) crystal. The phosphor absorbs some of the LED’s light and re-emits it at a longer wavelength and produces a broad spectrum of white light.
- Combining multiple colors: If multiple LED chips emit different colors, usually red, green, and blue (RGB), and are combined in one package, all the colors mix together to produce white light output. Such RGB or trichromatic white LED have a relatively poor color rendering index (CRI) due to the narrow range of wavelengths emitted.
Đèn LED màu đỏ được làm bằng nhôm arsenua, trong khi đèn LED xanh lục và xanh lam được làm bằng gali photphua.
LEDs are much more efficient than incandescent ánh sáng bulbs because the conversion of electrical to visible light is hiệu quả gần như 100%.
Lịch sử nhanh về bóng đèn LED
Before LED light bulbs were actually invented, theoretical discoveries had been made about them.
However, from the first prototype to the energy-efficient lighting systems that we use today, the evolution of LED technology has come a long way.
Let’s go over how we got to where we are today.
1962
Bóng đèn LED đầu tiên được phát minh vào năm 1962 bởi Nick Holonyak Jr..
It was only red and incredibly inefficient as it only emitted a tiny amount of light, but it was a milestone nonetheless.
1970
The next breakthrough was in 1970 when scientists managed to create a yellow LED light bulb.
They were still largely inefficient, but it was a game changer as it allowed the technology to be used for things like traffic lights and calculators.
1989
The LED light bulb continued to be developed over the decades, with more efficient versions being released in the next years.
In 1989, Shuji Nakamura invented a blue LED light bulb, which changed how people thought of LED lighting and opened up new possibilities for how they could be used.
2010
In 2010 the first LED light bulb that could be used in a standard household lamp was released.
This allowed people to start using these bulbs in their homes in place of traditional light bulbs, and they quickly became popular due to how efficient and long-lasting they were.
Hôm nay
Nowadays, LED light bulbs are common in many households, with more and more people turning to them for their lighting needs due to how energy-efficient they are.
LEDs are now available in all colors and can be used for a variety of applications, from general lighting applications to specialty LED products like grow lights.
Other LED Light Bulb Components
This type of light bulb is more than just a diode. It has several components that work together to produce and control the light. Let’s break them down.
Tản nhiệt
One of the problems with this lighting is heat management. LEDs are more efficient than bóng đèn truyền thống but still produce heat.
Too much heat can degrade them over time and reduce their life and efficiency. That’s where the heat sink comes in.
A heat sink is a metal part that absorbs heat away from the LED chip.
It’s usually made of aluminum and has fins or grooves to increase its surface area to dissipate heat better.
Keeping the LED cool is key to its performance and life.
The Driver
LEDs need direct current (DC) to operate, but the power from the grid is AC.
The driver is a component that converts the AC power to DC power for the LED chip.
They can be built into this bulb or separate depending on the design.
They also control the energy level (voltage and current) of the LED for consistent and reliable operation.
The Lens or Diffuser
The lens or diffuser is the outer most part of this type of bulb that directs the light.
Lenses focus the light into a beam, diffusers spread the light.
This allows these bulbs to be used in many applications from spotlights to general lighting.
Types of LEDs
There are many different types of LED light fixtures, each for specific use. Knowing these types will help you choose the right one for your use.
|
Standard LED Bulbs |
These are the most common LED types used in homes and businesses. They replace incandescent and fluorescent bulbs and come in many shapes and sizes. Standard ones are for general lighting. |
|
Smart LEDs |
This type has wireless connectivity so can be controlled remotely through a smartphone app or voice commands through devices like Amazon Alexa or Google Assistant. They can be dimmed, change color or be scheduled to turn on or off at specific times. |
|
COB (Chip on Board) LEDs |
đèn LED COB are a newer technology where multiple LED chips are placed on one board. This is the same technology that is used in led strips. This gives a brighter more even light output. These are used in high output applications like floodlights or spotlights. |
|
SMD (Surface-Mounted Diode) LEDs |
SMD LEDs are small flat LEDs mounted directly onto a circuit board. They are used in strip lighting and other space limited applications. SMD can produce many colors and are used in decorative lighting. |
5 Common Uses of LED Light Bulbs
These versatile bulbs can be used in a variety of applications, and it’s no wonder why they’re quickly replacing older lighting technology.
Here are five common uses for LED light bulbs:
Chiếu sáng tạo điểm nhấn #1
One of the most popular uses for LED light bulbs is accent lighting.
This involves using LED bulbs to highlight certain features in a room, such as paintings or sculptures.
Accent lighting can help to add a touch of elegance to any space.
Chiếu sáng nhiệm vụ #2
LED bulbs are also often used for task lighting, which is a type of lighting that is designed to help you see better while you are working on a task.
Task lighting is typically used in areas such as kitchens and bathrooms, where it can be difficult to see without some additional light source.
#3 Chiếu sáng tâm trạng
This involves using LED bulbs to create a certain atmosphere in a space.
For example, you might use an LED for mood lighting in your living room to create a cozy and inviting atmosphere.
Chiếu sáng ngoài trời #4
This can include everything from accenting your landscaping to providing security lighting around your home.
Outdoor LED bulbs are typically designed to be more durable than indoor LED bulbs, as they need to be able to withstand the elements.
Đèn Giáng sinh #5
One of the most popular uses for LED light bulbs during the holidays is Christmas lights.
LED Christmas lights are available in a wide range of colors and styles, making them a great way to add some holiday cheer to any home.
6 ứng dụng công nghiệp của bóng đèn LED
Dưới đây là một số ứng dụng công nghiệp phổ biến nhất của đèn LED:
Ô tô #1
LED bulbs are often used in cars, from headlights and taillights to interior lighting.
They’re more efficient than traditional bóng đèn sợi đốt, helping to reduce the overall energy consumption of vehicles.
Red LEDs are especially popular for brake lights.
#2 Y tế
Medical professionals use LED bulbs for a variety of purposes, such as illuminating operating rooms and providing light therapy for certain conditions.
Red light therapy, for example, promotes tissue repair and reduces inflammation.
LED lights can also be used for thermal imaging, helping medical staff to more accurately diagnose illnesses.
Hàng không #3
LED bulbs are often used in aircraft cockpits and passenger cabins.
The bright light emitted by LED bulbs helps pilots navigate through the sky, while passengers benefit from a pleasant atmosphere during their flight.
#4 công nghiệp
LED bulbs are widely used in industrial settings, from warehouses to machinery.
The bright light emitted by LED bulbs helps to improve visibility and efficiency on the job site.
#5 Agriculture
LEDs are used in controlled-environment agriculture to optimize plant growth.
đèn LED trồng cây, including green LEDs, are often customized to provide the ideal energy level for plant development.
Specific wavelengths, like red light, promote flowering and fruiting stages, improving crop yield.
#6 Bán lẻ
LED displays are commonly found in billboards, digital signage, and event screens.
Their high energy level and ability to use various colors, including high-brightness blue LEDs, create vibrant visuals that capture attention.
The displays decorated with LED strips also consume less power than traditional lights.
Sự khác biệt giữa bóng đèn LED và bóng đèn thông thường
LED light bulbs differ from traditional bulbs in so many ways.
Below are some of the most significant differences between LED light bulbs and normal bulbs.
| Độ bền | LED bulbs can last for 20-50 years when used for an average of 3-4 hours per day. |
| Chất lượng màu sắc | Đèn LED tạo ra chất lượng ánh sáng tốt hơn nhiều với độ rõ và độ sống động cao hơn. |
| Lượng nhiệt tỏa ra | Bóng đèn LED tạo ra ít nhiệt hơn nhiều so với bóng đèn sợi đốt truyền thống, khiến chúng an toàn hơn nhiều khi sử dụng. |
| Trị giá | Chi phí ban đầu cho bóng đèn LED có thể cao hơn bóng đèn truyền thống nhưng chúng thường có tuổi thọ cao hơn và cần ít năng lượng hơn để vận hành, dẫn đến chi phí tổng thể thấp hơn. |
4 mẹo mua bóng đèn LED
Khi mua bóng đèn LED, điều quan trọng là phải lưu ý những điều sau:
Nhiệt độ màu #1
Look for LED bulbs with high-lumen output to ensure sufficient brightness.
The color temperature, measured in Kelvin (K), determines the warmth or coolness of the light.
Warmer color temperatures (2700K-3000K) create a cozy ambiance, while cooler temperatures (4000K-6500K) provide brighter, more energizing light.
Depending on where and how you plan to use the bulbs, it is important to select a bulb with the right color temperature for your needs.
Hiệu quả năng lượng #2
Since LED bulbs are highly energy efficient, using up to 90% less energy than traditional incandescent bulbs.
Look for an Ngôi sao năng lượng label or other certification, such as a UL listing, when possible.
They also last significantly longer, with lifespans of 25,000 to 50,000 hours.
#3 Special Applications
For specific needs, such as outdoor lighting or decorative purposes, look for LED bulbs designed for those applications.
LED stands are often used to showcase LED bulbs in retail settings, allowing customers to see the light output and color temperature.
Khả năng tương thích #4
Ensure the LED bulb is compatible with your existing fixtures and dimmers.
Some LED bulbs may not be dimmable or may require specific dimmers.
Check the packaging for compatibility information.
Zener diodes are sometimes used in LED circuits to regulate voltage and protect against damage.
Hãy đảm bảo xem xét tất cả các yếu tố này trước khi mua để có được giá trị tốt nhất cho số tiền bạn bỏ ra.
Vorlane là nhà sản xuất cung cấp bóng đèn LED chất lượng cao nhất với giá cả cạnh tranh.
We use cutting-edge machines from both at home and abroad to create a stable supply of high-quality LED lights.
We have control over the entire manufacturing process, which allows us to maintain consistent standards throughout every step and workshop.
Contact us today to learn more about our products and services.
Tương lai của công nghệ chiếu sáng LED
Efficiency is set to soar, with next-generation LEDs using even less energy while shining brighter than ever.
This leap forward isn’t just good for our wallets; it’s a win for the planet, significantly cutting down our energy use and carbon footprint.
Color rendering will get a major upgrade, too.
Imagine LEDs that can mimic the full spectrum of sunlight, making the colors in your home or office pop like never before.
Plus, with advancements in color flexibility, you’ll be able to adjust the mood of a room with the tap of an app.
The integration of LEDs with smart technology is perhaps the most exciting frontier.
Your home’s lighting will not only respond to your voice but also adapt to your habits, enhancing security, convenience, and even your health by regulating your exposure to blue light.
Beyond illumination, LEDs are set to revolutionize fields from healthcare, promoting better sleep and mood, to agriculture, where they’ll help grow healthier crops.
The future of LED lighting is bright, indeed.
With each innovation, LEDs are set to become an even more integral part of our lives, illuminating the path toward a more efficient, adaptable, and sustainable world.
Phần kết luận
LED light bulbs are now becoming a popular choice for both residential and commercial uses.
Using LED bulbs can be an energy-efficient and cost-effective way to reduce your electricity bills, provide better lighting quality and durability, and help reduce your carbon footprint.
Để biết thêm về đèn LED hoặc hệ thống chiếu sáng nói chung, vui lòng truy cập liên hệ chúng tôi ở Vorlane.
We have a team of experts who will be able to provide you with the best lighting solutions for your needs.
With our high-quality products and services, you can trust that your items are safe and secure!
Câu hỏi thường gặp
1. Why are LED light bulbs more energy efficient?
LEDs convert 90% of the energy they use into light and waste very little light and heat.
Incandescent bulbs convert only 10% of energy into light, so LEDs are 80-90% more efficient.
2. How long do LED lights last?
LED bulbs can last 25,000 to 50,000 hours, much longer than traditional light, which lasts around 1,000 hours.
3. Do these bulbs get hot?
LEDs do generate some heat but are much cooler than incandescent bulbs.
Heat sinks are used in these bulbs to dissipate heat so the bulb remains cool and lasts longer.
4. Can I use LED bulbs with a dimmer switch?
Yes, but not all LEDs are compatible with traditional dimmer switches.
You need to choose an LED color or use dimmable lights and dimmer switches designed for them to avoid flicker or performance issues.
5. Are LED lights eco-friendly?
Yes, one of the benefits of LED lights is that they are eco-friendly as they don’t have mercury-like fluorescent bulbs.
Long life and energy efficiency means less replacement and less energy consumption.
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