welding rods

Led chip is a small chip, and is encapsulated with epoxy resin, so its volume is very small,
The quality is also very light. led the inherent characteristics it is the ideal light source can be used to replace the traditional light source.
 led with a wide range of uses. Compared with other light sources, LED energy saving, environmental protection, safety, long life, low power consumption,
Low heat, shade, white, high brightness, waterproof, micro-, shock-proof, easy dimming, beam concentration, easy to maintain 15
The unique advantages.
    Specifically, LED lighting has the following characteristics.
    1) High luminous efficiency,
    Traditional incandescent and halogen light efficiency is 12 to 24 im / w, fluorescent light for 50 to 70 im / w, sodium lamp is 90 ~
140 im / w, most of their power consumption into heat loss. From the theoretical analysis, LED luminous efficiency will reach after the improved
To 50 ~ 200 im / w, and its light color, narrow spectrum without filter can be directly issued a colored visible light. Head
First through existing technology led structure optimization, material optimization, process optimization, and then to optimize the combination, do
161 im / w, and the commercialization of the problem, but in order to further increase the efficiency you need to have a new technological breakthrough.
    2) low power consumption
    led electricity rates as high as 800/0. The single-tube power 0.03 ~ 0,06 w, DC; single-tube
The drive voltage of 1.5 ~ 3.5 v, the current 15 ~ 18 ma. In other words, the LED is a very energy-saving light source.
    Research data shows that the led is a cold light source, it compared with the current widespread use of incandescent, fluorescent, and its
The power-saving efficiency can reach above 90%. Bridge guardrail lamps, for example, the same effect of a fluorescent power for more than 40
Watts. Led each power only 8w, its color can also be color changes.
    3) as a solid light, seismic, durable, long life, high reliability
    led is the semiconductor components. With incandescent lamps, glass, tungsten, and other vulnerable moving parts, the failure rate very
Low maintenance-free. Its small size, light weight, epoxy package can withstand mechanical shock and vibration of high intensity,
Easily broken.
    In terms of reliability, the half-life LED (light output is reduced to the initial value in half the time) is probably a ~~
100,000 hours, the average life expectancy of 100,000 hours. LED lamp life of up to 5 to 10 years, can greatly reduce the light
With maintenance costs, to avoid the trouble of constantly changing light. On the contrary, the small instructions with the half-life of the half-life of the incandescent lamp (here
Refers to the typical value of half the number of lamp failure time) ranging from 100 000 to thousands of hours, depending on
Rated operating current of the lamp.
    4) security, belonging to the green lighting
    led-fat low-calorie, non-thermal radiation, cold light source, can be safely touch; can precisely control the light pattern and light angle,
The light color and soft, no glare; do not contain mercury, sodium and other potential health hazards of substances, heat, radiation, very little.
    Low voltage power supply, its shock protection class iii class security; DC power supply, its strobe.
    5) no mercury, no pollution, no UV radiation
    led to all-solid-state light, shock, impact resistance, not broken, recyclable waste, will not cause environmental pollution
Transfection. DC power drive led light does not produce infra-red phase UV spectral composition, external radiation,
It can not only provide comfortable lighting space, but also well positioned to meet the person s physical health needs, protect eyesight and
And environmental health of the light source. 6) monochromatic rich, colorful
    very high purity of the light emitted by the led devices, the performance of the spectrum is the light concentrated in a short wavelength.
The color saturation can be achieved 130a / o, full-color, can make the light more clear and soft. Can be adjusted by chemical modification methods
Manufacturing led materials, band structure and band gap, in order to achieve multi-color light red, yellow, green, blue, orange. Change the current allows
led color, such as the current hours led to a red, With the current increase, the LED can turn to orange, yellow,
Last turn green.
    7) cold start, no warm-up time, and instantly re-start, short response time
    Incandescent response time of milliseconds, the response time of the LED lights for a nanosecond, the response time of only 60 ns.
led response speed, operating at high frequencies, particularly suitable as automotive lamp light source for the drivers for their valuable
Decrease the time of the accident.
    light-emitting plane, good point
    point source incandescent lamp, led their perspective ≤ 1800. The design must pay attention to the use of led light does not
With viewing angles and perspectives can not be greater than 1800 this feature.
    9) the luminous efficiency affected by temperature
    led the luminous efficiency decreases with increasing temperature. Under normal circumstances, when the temperature exceeds 120 ℃, the chip will fail.
The lamp assembly design and manufacturing process design, thermal design must consider.
    10) applicability
    led chip s small size, can be made into devices of various shapes, and escape for the volatile environment.
    5 Why led the cold light of the environmental protection, energy conservation?
    led will directly convert electrical energy into light, this luminous does not exist, like the incandescent lamp as the first electricity into heat.
So that the object temperature and light-emitting phenomenon, it is said that this light is a cold light source.
    Led the production of the light source does not exist, such as mercury, lead, environmental pollutants, does not pollute the environment, no strobe and uv
Radiation; led the all-solid-state light, impact resistant, light body is easily broken, recyclable waste, no pollution; can be reduced
Less a large number of sulfur dioxide and nitride, and other harmful gases and carbon dioxide and other greenhouse gases that can improve people s lives living
Living environment, the LED light source are known as "green" light is well deserved.
    led to use of low-voltage DC power supply safer, more energy efficient than the use of high voltage power supply.