LED downlight and spotlight biggest difference

     LED downlight and spotlight biggest difference is emitting angle is different, resulting in differences in structure!
     LED down light: mainly used to provide uniform light irradiation range. Viewing angle Downlight are generally larger, usually around 120 degrees, generally using acrylic mask, so you can get uniform light, soft light without glare.
     LED spot light: mainly to highlight the key object through a small angle light, such as the television background wall, murals, ornaments, commodity etc.. Or increase the chiaroscuro of space, creating an atmosphere, such as big-name clothing flagship store, very strong chiaroscuro. To achieve this effect, light angle of spotlights generally small, usually 30-60 degrees. Therefore, even though it and similar downlight has the same power, the same total light irradiation, but the area is small, the brightness is high. Structurally, the spotlight is often reflected by the lens or bowl, to achieve small angle condenser, and can usually adjust the illumination angle, so when you install, you can adjust the irradiation object as needed.

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LED ceiling light lamp beads

      About the use of LED ceiling light lamp beads. Power greater of Ceiling Light than 30W  generally use 1W LED lamp beads, power is less than 30W Ceiling Light generally use small power LED lamp beads (eg 3020,3014,3528, etc.). Recommended for low-power SMD LED, easy to heat, but also improve the luminous uniformity.
      Lamp beads can be arranged according to their shape, such as square led ceiling light, lamp beads arranged in a square; If the shape is round, then arranged in a circle. Even so, the arrangement of lamp beads still there are many ways, the internal structure of a typical LED ceiling as shown.

      In the picture, has two ring LED lamp beads on the annular plate, it is the use of 23 0.4W type 5730 LED lamp beads, total power is 18W. The middle of the rectangular box is the constant current power supply, compared to the lower right corner square box remote control receiver - photodiode can receive infrared control signals control the brightness.
      Should be noted that there are still a large number of low-cost LED ceiling light adopts small power hat lamp, because the straw hat lamp high thermal resistance (450 ℃ /W), it is difficult to heat export,  so the light fades serious, life is very short.

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LED bulb manufacturers should standardize what points?

      Now LED lamp market matures, the market is also growing up, so there are some LED manufacturers shoddy, therefore, the MIIT bulletin solicitation "led bulb performance requirements." LED bulb manufacturers based on their own experience and the standard production, that the performance of LED bulb lamp must meet the following requirements, for everyone to discuss.
      1, security: the LED bulb lamp safety should be put in the first place to consider. At present, China led bulb lights is used in aluminum metal shell, this is the most users is most likely to exposure to parts, but the metal is easy to conductive, aluminum shell led bulb lights existence of security risks of electric shock. Therefore, it is best of LED lamp radiating seat insulation to be improved, such as the use of ceramic and plastic insulating material, in order to ensure foolproof.
      2, life: a LED lamp is characterized by a long service life, but some LED bulb manufacturers because of price competition, not use of normative materials, or professional degree is not enough, in thermal design and drive circuit design is unreasonable,  do so out of LED bulb life and not up to standard, this implicit the bad will cause damage to the interests of consumers. Therefore, should be on the service life of the LED lamp has a reasonable limit.
      3, the optical performance requirements: Some LED bulb manufacturers to lower the color to improve LED light flux, making the color performance level is low, even lower than energy-saving lamps, which is unreasonable,therefore, suggested that the LED manufacturer of light color and CRI to norms, such as home and commercial space LED bulb should be defined in Ra> 80, In addition to a diverse range of light color should be regulated, such as white light, neutral light range, and so on.
      The above performance criterion not only can be used for LED bulb lamp, some can also be used for other LED lamps, such as LED ceiling lamp, LED downlights performance norms.

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LED spot light color temperature selection

    LED spotlight is generally white light, but white light color are also different, terminology is the "color temperature" to express, from 1800K - 7500K. About 3000K color temperature often referred to warm white (often confused with light and yellow), 4000K is called the natural white, 5500K - 6000K is called the white, 6500K or more is called cold white. In fact, choice of color temperature is very simple, because all things including the human, is the life in the sun, the sun light in the morning is warm white, noon is white, night back to the warm white. Therefore, LED spot light color temperature selection, can with sunshine as the reference.
    In home lighting general choose warm white or pure white light, if there is a natural white, of course the better. Warm white is characterized by warm, pure white characteristic is bright. In the home  has ceiling lamps, there are downlights, spotlights, wall lamps, strip light and other auxiliary lamps lighting, preferably pure white, warm white with use.
    It is worth mentioning that has now emerged intelligent dimmable LED spot light, this is mainly because the advantages of LED, a lamp can bring up the pure white, warm white, natural white. This is the incandescent lamp and fluorescent energy-saving lamps can not compare, this is the advantage and charm of LED lamp!

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The obvious advantages of LED flat panel lighting

    With the acceleration of the development of LED industry,  in recent years the traditional lighting enterprises have begun to focus on the development of LED, the emerging LED companies actively layout also, looking forward to seize the market. However, relative to the LED production enterprises in full swing, the masses for the defects of LED technology has been worried.
    LED has the obvious advantage of energy-saving and environmental protection, however the glare problem has been making LED production enterprises headache. How to solve the problem of LED glare, for consumers to create a comfortable lighting environment has been the focus of research and development enterprise concern. In this context, the obvious advantages of LED flat panel lighting.
    LED Panel Light adopts SMD LED as a light source, plus a light guide plate or diffuser plate, which can effectively direct the light dispersion so soft light without glare and illumination uniformity, high brightness. LED panel light compared to other types of lamps, the advantages are obvious, application scope is also in constant increase.
    As a new type of lamp, led ceiling panel light has begun to replace the common grille lamp, has been used in high-end hotels, offices, balconies, corridors and other places.

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The color temperature of LED down light

    The color temperature of LED down light to absolute temperature "K" to represent. The color temperature: the color and the blackbody source emitting light at a temperature radiation light color is same, the temperature of the blackbody called the color temperature of light source.
    Color temperature >5000k: the color is cool white type (Bluish white light), cold atmosphere effect;
    Color temperature in the 3300-5000K: the color is white, no obvious visual psychological effect in this kind of color; it is called the neutral color temperature;
    Color temperature <3300K: light color is warm white (Reddish white light), warm atmosphere effect;
    Color temperature and brightness: in the high color temperature light, such as brightness is not high will give people an eerie atmosphere; in the low color temperature light color, brightness is too high will give people a stuffy feeling.
    Comparison of LED downlight light color: Using two kinds of light color difference is very big of light in the same space, there will be layered effect, Light color difference is large, In the brightness layered effect at the same time, but also can obtain layered effect color.

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Design of LED ceiling lamp should pay attention to the problem

     LED ceiling lamp is currently the main areas of application are in indoor lighting, including commercial lighting, home lighting, office lighting, special lighting etc.. These areas for each indicator requirements of luminaires is relatively high, so the researchers more attention should be paid to light distribution, light pollution, CRI and other professional issues in the design of LED ceiling lamp.
     First of all, the basic function is to provide the electric lamp light source is connected, and in general, users are most concerned about is whether LED ceiling lamp can illuminate we want light, whether to make us feel comfortable. However,  for professional lighting designers, in addition to be familiar with the various LED ceiling lamp body material, lens and reflector system, it must be based on the lamp light distribution curve to spot quality LED ceiling light projection, at any point in space efficiency and computational LED ceiling lamp illumination intensity in the value, which can calculate the intensity of illumination distribution within the region.
     Secondly, LED ceiling light should also pay attention to the problem of light pollution. Now living environment is emphasized the light intensity control and light flashing control. Because now the night lighting and advertising a lot, too bright affects people's sleep and the flashing lights will also influence the traffic safety. LED ceiling light at this point of the performance is also quite perfect, no glare, no stroboscopic effect is one of the important reasons of the people favor it.
     Finally, LED indoor lighting is the most important color index. The color temperature is also very important, a great impact on the commercial exhibition effect. The color temperature can create an environment effect, let the goods to increase the sense of value. LED ceiling lamp can according to the different environment, adjust the different color, so it is more advantage in these areas.
     LED lighting a huge market opportunity, development space is vast. LED lighting has been from the outdoor landscape lighting to indoor lighting development. According to the analysis, The square LED ceiling light and other lighting lamps will be the future development trend of indoor lighting.

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