Knowledge of LED spotlights with light-emitting diodes as light source!

LED spotlights is the use of light-emitting diodes as a light source of spotlights. Traditional spotlights mostly use halogen lamps, low luminous power, relatively power-consuming, illuminated by the rise in ambient temperature, the use of short life. LED in the light-emitting principle, energy saving, environmental protection level are far superior to traditional lighting products. And LED light-emitting unidirectional formation of the perfect support for the spotlight distribution.

LED spotlight price and advantages

The Chinese name of LED spotlight is Yimei Light Emitting Diode, it is the most popular new high-tech industry nowadays, and there are more and more lamps and lanterns made of LED as light source, among which the most favorable is LED spotlight, because compared with other LED lamps and lanterns, LED spotlight price is lower. 

1. LED spotlights can be driven by low-voltage DC: with the advantages of small loads and weak disturbances, the use of environmental requirements are low. 

2. LED spotlights can better control the composition of the luminous spectrum, and then can be well used in museums and exhibition halls in part or focus lighting. 3. 

3. LED spotlight luminous directionality is very strong: brightness decay than traditional light source is much lower, LED spotlight price civilian.

4. LED spotlight echo moment is very fast: in microsecond level, just switch on, immediately light, there will be no delayed and flickering phenomenon. 

5. LED spotlights announced a high concentration of light energy: concentrated in the smaller wavelength window, high purity. 

6. Very long life: throughout the 50,000-100,000 hours, because the LED is a semiconductor device, even if the frequency of the switch, will not affect the use of longevity. 

7. good environmental protection, LED spotlights in the production process do not add "mercury", do not need to inflate, do not need the glass shell, good impact resistance, good shock resistance, not easy to break, easy to transport, very environmentally friendly, known as "green power", LED spotlights The price is civilianized. 8. 

8. energy-saving: LED spotlight spectrum is almost entirely focused on the visible band, its luminous power up to 80-90%. People generally believe that energy-saving lamps can save 4 / 5 is a huge innovation, but LED spotlights than energy-saving lamps but also energy-saving 1/4, which is a solid light source more huge reform. 

In addition, LED spotlights also have other advantages, high quality of light, fundamentally no radiation, LED spotlight price civilian, belonging to the typical green lighting light source; reliable and durable, extremely low cost of protection, etc.. Because LED spotlights have the above characteristics of other solid light sources are still unmatched, LED will be the main stream light source in the lighting industry after 10 years.

Optical properties:

LED supply is a large half-width monochromatic light, because the semiconductor energy gap decreases with the rise in temperature, so it emits the peak wavelength increases with the rise in temperature, that is, the spectral redshift, the temperature coefficient of +2 ~ 3A / . LED luminous brightness L and forward current is approximately proportional. Current increases, the luminous brightness also increased approximately.

LED spotlight life expectancy:

LED spotlights because of the adoption of solid light-emitting diodes as the light source of light-emitting mode, life expectancy depends mainly on the solid LED light source and drive heat dissipation part, now the LED light source life expectancy has reached more than 100000 hours, following the continuous development of LED skills and the use of many popular skills, in the drive and heat dissipation also simply reach a more ideal situation, the commercially available high-quality LED spotlights life expectancy simply Reach 10000-50000 hours, almost 10-50 times the general halogen spotlights.

LED lighting products save power up to 80% or more, almost protection-free, there is no question of frequent replacement parts, about half a year down the cost of savings can be replaced back to the capital. Green and environmentally friendly semiconductor electric light source, soft light, pure spectrum, conducive to workers' vision protection and health.

Price of LED spotlights:

Because LED bulbs in the structure to be more messy than halogen spotlights, so even in the case of large-scale production, the price of the product will be higher than halogen lamps. But with more and more people know and accept, as well as the gradual spread of large-scale production, the price of LED spotlights will soon reach an acceptable level. If in the purchase of an energy-saving account, it will be found that even now higher prices, on the basis of the use of a year, the initial purchase cost + 1 year electricity costs are lower than traditional halogen spotlights. And LED bulbs are now able to use the life span of more than 50,000 hours.

LED spotlight composition structure:

LED spotlights are mainly composed of shell, lamp beads, aluminum base plate, driver, the specific analysis is as follows:　　 

LED spotlight shell: baking paint, electroplating two kinds of shell The whole set contains lamp cover, lamp cup, base, aluminum substrate, lens, screws Suitable for MR16, GU10 Lotus-shaped, beautiful, generous heat dissipation function is good 

LED spotlight lamp beads: six feet RGB, spotlights dedicated, red: 40lm green: 60lm blue: 15lm are selected 350 mA current.

LED spotlight driver: 

Global universal input voltage (220V) constant current output, to ensure the safety of the use of high-power LED high power factor, more than 0.98 above the barrier power over-temperature protection, short circuit protection, open circuit protection can drive all 3W LED (including red and yellow) The use of ceramic capacitors, long life design, up to 50,000 hours high reliability.

LED spotlight heat dissipation:

1. Conventional methods:

The use of general thermal conductive sheet to heat dissipation for LED spotlights, thermal conductivity in general.

LED spotlight heat dissipation can not be very good heat dissipation. 

2. Liquid heat dissipation:

Foshan Zhonan Semiconductor Lighting Institute research and creation of a liquid heat dissipation method used to successfully deal with high-power LED heat problems, small volume LED spotlight heat dissipation problems, a historic breakthrough, to contribute to the difficult problem of LED spotlight heat dissipation. 

3. Heat pipe heat dissipation:

The use of heat pipes for LED spotlights heat dissipation, just like the computer CPU heat pipe heat dissipation, so that the volume has become larger, more thick and clumsy.

Classification of LED spotlights:

Most of them are mainly MR16, which is called MR16 by the plug type, according to the difference of the lamp foot, also contains E27, GU10, etc..

LED spotlight features:

1, energy-saving: equal power LED lights consume only 10% of the electricity of incandescent lamps, more energy-efficient than fluorescent lamps. 

2, long life: LED lamp beads can work 50,000 hours, longer than fluorescent lamps and incandescent lamps. 

3, dimmable: the previous dimmers have been for incandescent lamps, incandescent dimming light red; difficult to see the daylight dimmers, which is the main reason why dimming skills have not been developed for many years; now LED and can be dimmable, and either light or dark light is the same color (color temperature remains unchanged), which is clearly better than the incandescent dimming. 

4, can be frequently switched: LED life is counted by the light, even if thousands of times per second switch does not affect the life of LED, in the decoration and other needs frequently light off occasions, LED lights have absolute advantages. 

5, colorful: there are positive white light, ambiguous white light, red, green, blue and other colors, whether in the living room next to the lights used to embellish the small colored lights or neon lights, are very bright. 

6, low heat: like spotlights, many 220V spotlights with not also a few days to break down is because of heat. 12V halogen spotlights heat is lower than the 220V spotlights, but there is a lack of transformer power and other reasons, its brightness does not reach the nominal value. With LED spotlights, do not have to transformer can also work for a long time.

High-power LED spotlights LED spotlights use scale:

LED spotlights are mainly used for decoration, commercial space lighting and construction decoration lighting, etc. Following the development and advancement of LED skills, the LED spotlights on the market now have outstanding functional advantages, the use of high-purity aluminum reflector plate, the most accurate beam, the best reflection; symmetrical narrow angle, wide angle and asymmetric light distribution system, and projection lights are attached to the scale plate, people can easily adjust according to the scale The light distribution system is symmetrical, narrow angle, wide angle and asymmetrical. In addition, in order to facilitate the protection and maintenance, LED projector lights choose to open behind the replacement bulbs. The lighting decoration is first-class, LED spotlights can achieve sudden changes, jumping, color flashing, random flashing, sudden replacement and chasing, scanning and other dynamic effects.

LED projection lights and LED underwater lights, LED buried lights, LED wall washer lights, etc. can be used independently, but also can be used interactively, and then produce a more variable role, and LED projection lights are mainly used for single construction, historical construction group exterior lighting, landscaping lighting, building light outside lighting, billboard lighting and other specialized facilities lighting, as well as bars, dance halls and other entertainment venues atmosphere lighting, etc., the market The development prospect is promising.

LED production process:

1、Cleaning: choose ultrasonic cleaning PCB or LED bracket, and drying. 

2, mounting: in the LED tube core (large disc) bottom electrode prepared on the silver glue after expansion, the expansion of the tube core (large disc) settled on the prick crystal table, under the microscope with a prick crystal pen will be installed one by one in the PCB or LED bracket corresponding pads, followed by sintering to make the silver glue curing. 

3, pressure welding: aluminum wire or gold wire welder to connect the electrode to the LED core for the current injection lead, LED directly mounted on the PCB, the general choice of aluminum wire welder. 

4、Encapsulation: Through dispensing, LED cores and solder lines are protected with epoxy. Dispensing on the PCB board, there are strict requirements for the shape of the cured gel, which is directly related to the backlighting products out of the light brightness. This process will also undertake the mission of point phosphor (white LED). 

5, welding: if the backlight is the choice of SMD-LED or other packaged LED, the assembly process before the need for LED welding to the PCB board. 

6、Cutting film: using a punching machine to die-cut the backlight required for a variety of dispersion film, reflective film, etc. 

7, assembly: according to the requirements of the drawings, the backlight source of various materials craft installation of the correct orientation. 

8, test: check whether the backlight photoelectric parameters and light uniformity is good. 

9, packaging: the products will be packaged and warehoused according to the requirements.

LED spotlight purchase:

Spotlights are divided into two kinds of low-voltage, high-pressure, consumers are best to choose low-voltage spotlights, their longevity and high luminous efficiency. Spotlight light efficiency to reflect the power factor, the greater the power factor, the better the light efficiency, the general power factor of the spotlight in about 0.5, the price is cheap, high-quality spotlights spotlights power factor can reach 0.99, the price is slightly more expensive. 

Spotlights are generally used to enhance the lighting of the decoration, generally embedded in the ceiling or wall, spotlight operation will generally announce a higher temperature, so be sure to buy high-quality products, or there will be safety hazards. 

Spotlight use to deploy transformers to use, lamp beads should also select good quality, otherwise the lamp beads of the spotlight is very easy to bad, think about it, the spotlight beads in the ceiling, replace it but quite troublesome. 

And now the quality of the spotlights on the market vary, with the naked eye is difficult to distinguish between good and bad, so it is best to buy spotlights to select brand products, and select the matching quality transformer.

Differences:

Many people are not easy to distinguish between tube and spotlights, in home decoration, downlight and spotlights have different uses, briefly, downlight is a kind of light fixture with more concentrated light compared to the general lighting, generally used for general lighting or auxiliary lighting. Spotlight is a highly concentrated lamps and lanterns, its light illumination is with specific guidelines can be specified. It is mainly used for special lighting, such as focusing on a very taste or a very new place. We from the light source, the use of orientation, and price comparison to distinguish the characteristics of the two lights. 

1, light source:

Downlight can be installed incandescent bulbs, can also be installed energy-saving lamps. Incandescent lamps are yellow light. Installed energy-saving lamps depending on the type of bulb can be white or yellow light. The direction of the light source of the ceiling downlight is not adjustable. From the picture below we can directly see the downlight energy-saving lamps, and waterproof downlight is a waterproof glass cover on the outside. 

General household spotlights with quartz bulbs, or lamp beads. Of course, large spotlights are not necessarily with quartz bulbs. Quartz bulbs as long as the yellow light. And the general direction of the light source of the spotlight can be freely adjusted. 

2、Use orientation:

Downlights are generally installed in the ceiling, the general ceiling needs to be installed in more than 150mm. Of course, downlights also have external type. In the area without ceiling lights or chandeliers installed downlight is a good choice, the light is soft compared to the spotlight. 

Spotlights can generally be divided into track type, point hanging type and embedded type and other kinds. Spotlights generally come with transformers, but there are also without transformers. Embedded spotlights can be installed in the ceiling. Spotlights are mainly used in places that require emphasis or reflection. Such as TV walls, wall paintings, ornaments, etc., can play a light rhyme to enhance the role.

3、Price:

Generally speaking, the domestic quality of the better price is also reasonable downlight spotlight brand has a few of the price of the gold point source more advantageous. The best price/performance ratio, the style is also the most abundant, to meet the needs of different design styles. 

Downlight generally has a large (5 inch) medium (4 inch) small (2.5 inch) three kinds. The market price of small is now between 15-20 yuan, medium between 28-32 yuan, and large between 36-48 yuan. Downlight has two kinds of horizontal and vertical inserts, the price of horizontal inserts is a little more expensive than vertical inserts. 

It should be noted that spotlights generally can not be used to illuminate woolen fabrics at close range, and not close to flammable obstacles, or briefly cause a fire. Although the spotlight consumes more electricity, but in the right place to have it embellished role is very different. Spotlights and colorful light cups decorated with a distinctive flavor.