What difference between energy-saving lamp and LED lamp? Introduction to the purchase of the right LED lights
With the enhancement of people's awareness of environmental protection, more and more people begin to pay attention to and buy LED lamps. However, in the face of a variety of LED lights on the market, how to choose has also become a headache for many consumers. What is the difference between energy-saving lamp and LED lamp? What kinds of LED lights are there? What are the precautions for purchasing LED lamps? The topic of this issue will be answered one by one.
A. Types of LED lamps
There are many kinds of LEDs, which are different in shape, color, brightness and power. On the one hand, they bring more choices to consumers, but on the other hand, they also increase the complexity of LED classification. For the classification of the application scope of general LEDs, we summarize as follows:
Outdoor landscape lighting
Guardrail lamp, projection lamp, LED lamp strip, led special-shaped lamp, digital lamp tube, buried lamp, lawn lamp, underwater lamp, etc.
Wall lamp, chandelier, embedded lamp, spotlight, corner lamp, plane luminous panel, grid lamp, fluorescent lamp, downlight, variable slide, etc.
Portable lighting (flashlight, head lamp), low illumination lamp (corridor lamp, doorplate lamp, court lamp), reading lamp, microscope lamp, projection lamp, camera flash lamp, table lamp, street lamp, etc.
Miner's cap lamp, explosion-proof lamp, emergency lamp, safety indicator lamp, etc.
Military lamps, medical non thermal radiation lamps, treatment lamps, sterilization lamps, special lamps for crops and flowers, special biological lamps, special LED lamps combined with solar photovoltaic cells, etc.
B. Difference between energy saving lamp and LED lamps
Energy saving comparison
The power consumption of LED is very low. Generally speaking, the working voltage of LED is 2-3.6v. The operating current is 0.02-0.03a. This means that it consumes no more than 0.1W of electricity. The power consumption of LED lamps is 1 / 4 of that of energy-saving lamps.
Heat dissipation comparison
From the comparison of heat dissipation between the two lamps, LED lamps are inferior to ordinary energy-saving lamps. The heat dissipation of LED lamps is not very good, and the heat dissipation of ordinary energy-saving lamps is really good, which is the disadvantage of LED lamps. But now manufacturers are overcoming such defects as LED, and the development of radiator is also in progress.
LED lamps do not contain harmful elements such as mercury and xenon, which is conducive to recovery and, and will not produce electromagnetic interference (ordinary lamps contain elements such as mercury and lead, and electronic ballasts in energy-saving lamps will produce electromagnetic interference).
The service life of ordinary energy-saving lamps can reach 10000 hours. Due to the different way of emitting light from ordinary energy-saving lamps, the service life of LED lamps is longer, up to 100000 hours. The service life of LED lamps is much longer than that of ordinary energy-saving lamps.
C. Power selection of LED lights in home space
Living room light- bright
60-450w, the living room area generally accounts for the main proportion of the total area of the house, so the requirements for lighting wattage are relatively high. It is also particularly important to make the living room transparent, bright and generous on the premise of ensuring lighting.
Bedroom light - soft and warm
13-50w, the light in the bedroom shall be soft to create a warm atmosphere; There should be no dazzling light to make it easier for people to enter the sleep state, so the required lighting wattage is low.
Kitchen light - adequate brightness
3-38w, because people will work for different lengths of time in the kitchen, subtle actions such as cutting vegetables have high requirements for lighting. We should not only ensure that there is no dark area in the kitchen, but also reduce the inconvenience and danger during cooking. Therefore, we need to choose lights with sufficient brightness.
Elderly housing light- high wattage
25-100w, the old people's eyesight is weakened, and the light they feel is far less than that of the young people. The elderly need brighter lights to see things clearly, so they need to choose lights with higher wattage.
Children's room light- low wattage
13-70w, the children's room needs to choose soft lights. Too bright room lights will stimulate eyes and affect sleep, while low brightness lights are conducive to cultivating children's sleepiness. Therefore, the lights with low wattage should be selected.
C. Factors affecting the price of LED lamps
LED brightness is different, the price is different.
2. Antistatic ability
Led with strong antistatic ability has long service life and high price. Generally, led with antistatic voltage greater than 700V can be used for LED lighting.
3. Luminous angle
LEDs with different purposes have different luminous angles. Special luminous angle, high price. Such as full diffusion angle, the price is higher.
4. Life span
The key to different quality is life, which is determined by light decay. Small light attenuation, long service life, long service life and high price.
5. Light Wavelength
If the LED with the same wavelength and the same color, the price is high. It is difficult for manufacturers without led spectrophotometer to produce pure color products.
6. Leakage current
LED is a unidirectional conductive luminous body. If there is a reverse current, it is called leakage. Led with large leakage current has short service life and low price.
7. LED chip
The light-emitting body of LED is chip. The price varies greatly with different chips. Chips from Japan and the United States are more expensive, and the prices of LED chips from Taiwan and Chinese manufacturers are lower than those from Japan and the United States.
8. LED Chip size
The size of the chip is expressed by side length. The quality of large chip LED is better than that of small chip. The price is directly proportional to the chip size.
The colloid of ordinary LED is generally epoxy resin. The LED with anti ultraviolet and fireproof agent is expensive. High quality outdoor LED lamps should be anti ultraviolet and fireproof.
D. LED lamp quality identification
Look at the solder joint
The LED lamp strips produced by regular LED lamp manufacturers are produced by SMT patch process, solder paste and reflow soldering process.
Look at FPC quality
FPC is divided into copper coating and calendered copper. The copper foil of copper clad plate is convex, and the calendered copper is closely connected with FPC.
Look at cleanliness
If the LED lamp belt produced by SMT process is adopted, the surface cleanliness is very good, and no impurities and stains can be seen.
Look at the packaging
Regular LED lights will be packaged in anti-static reel, and then sealed with anti-static moisture-proof packaging bag.
Look at the label
There will be printed labels on the regular LED lamp packaging bag and reel, rather than printed labels.
The regular LED lamp will be enclosed in the packing box with instructions and specifications for the lamp strip, and will also be equipped with LED lamp connector or card holder.
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