street solar lighting in LED machine

The jetting, belongs to the new led lights technology, which uses a nozzle alternative to syringes, to solve many problems. Jetting nozzles needed to fill the bottom of the device above the dispensing need to reach their location below the top (street solar lighting). Jetting nozzles in the entire circuit board side along the x and y directions, without the need for vertical movement.

And dispensing syringe, the nozzle does not form a continuous bottom-filling glue flow, and replaced every second jet more than 200 points after accurate measurement of the gel-point. With the move of the nozzle level, the gel-point can be the formation of linear and pattern of a variety of needs, the solid line, dotted line and a variety of other different graphics. Each jet by precise control of a jet formed by the gel-point minimum diameter of up to 0.33mm, for coating plastic patch area into the precise control of occasions is very important.

Injection technology is the glue from the nozzle at a faster rate, rely on glue momentum to make glue out of the nozzle. Each jet  (street solar lighting) will spray out a certain amount of glue. Common injection frequency is 100 Hz to 200 Hz, but will soon reach 1000hz. , There are several different jet dispensing needle dispensing. When the glue from the nozzle, before the glue in contact with the substrate and the separation nozzle. Each of the gel-point injection into the substrate to form points, lines, and graphics. In the dispensing position during the move, the dispensing head is not the movement of the Z-axis direction, thus saving a considerable amount of time. Needle dispensing robot in the X, Y, Z axis movement, glue flow from the needle out of contact with the substrate, relying on gravity and the substrate surface tension glue isolated from the needles. After the completion of each dispensing, a movement along the Z axis, and then move to the next dispensing position.

The LED products market is also benefiting from the spray adhesive technology. Spray adhesive process can spray a wide range of optical materials including silicone, UV curable conductive adhesive of the phosphorus doped in the high-speed dispensing position and precise dispensing and plastic volume control. The accuracy of the spray adhesive can improve the yield of high-value high-power LED street lights devices. Applied to the white light  (street solar lighting) production, phosphor powder and mixed glue dispensing, its consistency is a good improvement.

street solar lights in LED lumen

Increasing LED lights brightness can be broadly divided into two types, one is to increase chip itself, the amount of light emitted; Another method is the effective use of the light generated by the chip, increasing the exposure of the light irradiation to the expected direction.

The former is trying to improve the luminous efficiency of the chip active layer, as well as to improve the chip shape to increase the external light extraction efficiency, or chip, large-scale use of high current density to increase the amount of light emitted; the latter is the use of light wave control technology, that is, the package resin to form a special optical structure, the chip produced by light irradiation to the expected direction. If the LED (street solar lights) screen brightness of less than the expected value, you can also try using the following methods to improve the brightness after use.

(1) Changing the flow through the LED current, general LED tube  (street solar lights)  to allow continuous current at 20 mA or so, in addition to the red LED saturation phenomenon, the other LED brightness is basically proportional to the current flowing through.

(2) the use of the human visual inert gray scale control pulse width modulation method to achieve, that is, cyclical changes in the optical pulse width (duty cycle), as long as this repeated cycle of light is short enough , the human eye do not feel light-emitting pixels in jitter. LED display to provide a pulse width modulation is more suitable for digital control, so in general the use of computer content, almost all of the LED control system is usually composed from three parts of the main control box, the scanning plate and the display and control device. The main control box from the computer's graphics card to obtain a screen pixel colors and brightness information, and then re-allocated to a number of block scanning plate, each scanning the board responsible for controlling the LED screen on the number of rows (columns), and each row (column) on the LED display and control signal with the serial transmitted. There are two serial transmission of control signals: one is to scan the board centralized control of each pixel grayscale scanning plate from the control box of each line of pixel brightness value decomposition (Pulse Width Modulation) then the opening of the line LED signal  (street solar lights)  pulses (light does not shine to 0) to the corresponding LED on the line with serial transmission, control whether the light. Used in this way the device is less, the serial transmission of data in a repeating cycle of light, each pixel requires 16 pulses in 16 gray, 256 gray scale needs 256 pulses, the device operating frequency limit, generally only the LED lights screen to do the 16 gray.

sunshine systems led grow lights in LED Tubes

LED fluorescent tubes are the latest product of the led family, but also fluorescent alternatives, constitute mainly of white LED chip module (sunshine systems led grow lights) . The advantages of long life, no flicker, no radiation, energy saving, environmental protection, the advantages of combination of all the fluorescent one.

On the other hand, LED fluorescent tubes  (sunshine systems led grow lights)  installation are very simple, the installation will remove the original fluorescent starterand put LED fluorescent tubes. LED fluorescent energy-saving up to 50% more than the life expectancy of more than 10 times the ordinary lamp, almost maintenance-free. The scope of application: offices, factories, shopping malls, schools, home and other indoor lighting.

LED fluorescent tube has the advantage of finishing summarized as follows:

1. Green lighting, environmental stresses
Traditional fluorescent lamps contain mercury vapor, if broken mercury vapor will evaporate into the atmosphere. LED fluorescent do not use mercury, and LED products not containing lead, has protective effects on the environment. LED lighting is recognized as the green lighting of the twenty-first century.

2. Efficient conversion
Traditional lamps will produce large amounts of heat, LED lighting is energy all is converted to light, will not cause waste of energy. And file, the clothing will not fade phenomenon.

3. Quiet and comfortable, no noise
LED lighting does not produce noise, the occasion for the use of sophisticated electronic equipment for a good choice. Suitable for the library, the office and the like occasions.

4. Soft light, no flash
Traditional fluorescent lamp use is alternating current, so per second will produce 100-120 times the strobe. LED lamps, AC power directly converted to DC, and will not produce flicker, eye protection.

5 UV, less mosquito
LED lamps do not produce ultraviolet light, it will not be as traditional lamps, there are a lot of mosquitoes around the light source side. The room will become more clean and tidy.

6. Adjustable voltage and a wide range of
Traditional fluorescent lamp is lit by high-voltage rectifier release, can not be lit when the voltage drops. LED lamps  (sunshine systems led grow lights) can be lit within a certain range (80V-245V) voltage, but also adjust the brightness.

7. Longevity, energy-saving and low cost
LED fluorescent lamp power consumption is 10 times below one-third of the traditional fluorescent lamp life is also a traditional fluorescent lamp, the long-term use without the need to replace, reduce labor costs. More suited to the occasion difficult to replace.

8. Sturdy solid, very safe
LED lamp used in epoxy resin rather than glass, more robust solid, and even hit the floor LED will not easily damaged, you can safely use.

super bright led headlamp in SMD

1. The role of a plastic patch LED Lights
SMA, surface mount adhesives, for wave soldering and reflow soldering, and is mainly used to components on the printed circuit board, the general dispensing or stencil printing method to allocate in order to maintain the components in printed circuit position on the board (PCB), to ensure that components are not lost in the transmission process on the assembly line. Paste components into the oven or welder heating reflow sclerosis. With the so-called solder paste is not the same, after a heated hardening, and then heating it will not melt, thermosetting plastic patch process is not reversible. The use of SMT chip (super bright led headlamp) adhesive effect due to the thermal curing conditions, the connecting object, the equipment used, the operating environment differ. When used according to the production process to choose a plastic patch.

2, the composition of the plastic patch LED STREET LIGHT
PCB assembly used in the majority of surface mount adhesive (SMA) are epoxy resin (epoxies), although there are polypropylene (acrylics) for special applications. After high-speed dispensing system into the electronics industry to learn how to deal with a relatively short shelf life products, epoxy resins has become more mainstream glue technology worldwide. Epoxy resins generally provide a good adhesion on a wide range of circuit board, and has very good electrical properties. The main ingredients: the base material (ie, the main high molecular material), fillers, curing agents, other additives such as.

3, the intended use of the adhesive patch LED TUBES
a wave soldering to prevent the components off (wave soldering)
b. reflow to prevent the other side of the components off (double-sided reflow soldering process)
c. to prevent the components of displacement and stand at (reflow soldering process, pre-coating process)
d mark (wave soldering, reflow soldering, pre-coating), printed boards and components, bulk changes, marked with plastic patch.

4, adhesive patch used classification
a dispensing type: on the printed circuit board through dispensing equipment in Sizing.
b Squeegee type: the printing of steel mesh  (super bright led headlamp) or copper mesh coated scratch sizing.

The final temperature will affect the shape of viscosity and gel point, most modern dispensing machines rely on the needle mouth or chamber temperature control device to maintain temperature above room temperature of the plastic. However, if the PCB temperature increased from the preceding process, the outline of the gel-point  (super bright led headlamp) may be damaged.

super bright led light bulbs and led flood light

First, what is the LED lamps for flood light?
LED lamps for flood light (LED Downlight) also known as the spotlight, projection lamps, spotlights, etc., mainly used to make the use of architectural lighting, as well as commercial space lighting decorative ingredients heavier, its appearance round party, generally have to consider the heat of reasons, therefore, its shape and Spotlights still have some differences.

Second, LED Floodlight features:

Common market, LED (super bright led light bulbs) Spotlights basically is the choice of 1W high power LED (each LED component with a high luminous efficiency made by the PMMA lens, its main function is the secondary distribution of the LED light, which is two optical), there are a few companies because of the heat if handled well, the choice of 3W or higher power LED. Cast lighting, buildings and other lighting suitable for large occasions.

Third, what is the LED flood lights  (super bright led light bulbs) ?

LED floodlight  (super bright led light bulbs) is a point light source of an exposure evenly in all directions, the irradiated area can be adjusted in the scene in the performance of a regular octahedron icon. The floodlight is in effect, making them the most widely used light sources, standard floodlights used to illuminate the entire scene. Floodlights can be applied to the scene to produce good results. The floodlight is the most widely used in the renderings, a light source, the scene with floodlights coordinating role, to the birth of the good results. Uniformly in all directions from a specific point in the irradiated object, use it to simulate light bulbs and candles are best. Floodlights can be placed anywhere in the scene. For example, it can be placed outside the camera range, or within the objects. Remote access to many different colors of floodlights in the scene is very common. These floodlights will be dark projection and mixing in the model. Floodlights illuminated area is relatively large, so the irradiation effect of the floodlights is very easy to predict, and this light there are many secondary uses, such as floodlights placed in position near the surface is the surface on to produce a bright light.

Fourth, the floodlight features:
The floodlight is uniformly in all directions from a specific point in the irradiated object, use it to simulate light bulbs and candles are best. Floodlights can be placed anywhere in the scene. For example, it can be placed outside the camera range, or within the objects. Remote access to many different colors of floodlights in the scene is very common. These floodlights will be dark projection and mixing in the model. Floodlights illuminated area is relatively large, so the irradiation effect of the floodlights is very easy to predict, and this light there are many secondary uses, such as floodlights placed in position near the surface is the surface on to produce a bright light.

super high power led in low temperature

1, What is the low temperature lighting?
Low temperature lighting refers to the use of artificial light source to light, the ambient temperature below 5 ° C venues, such as refrigerators, freezers, refrigerators, cryogenic plants, outdoor lighting. The low-temperature lighting to fluorescent-based, and now the LED street light (super high power led) source in the low-temperature lighting place.

2, the fluorescent lamps used in low lighting
Although the fluorescent lamp in a conventional room temperature, the luminous efficiency up to 90lm / W regarded as a high-efficiency light source, but when entering the low illumination environment, whether it is the luminous efficiency, illumination or aesthetic design shows more disadvantages. Even though some manufacturers have introduced a dedicated low temperature fluorescent lamps, to solve the problem of the luminous efficiency, but still can not take into account the illumination and aesthetic requirements. And the price is very expensive. At low temperatures, ordinary fluorescent light-emitting efficiency and even to be halved, and life will be shortened. Even without considering the nonuniform illumination of fluorescent lamps at low temperatures, but also consider the fluorescent light color and color rendering the problem of inadequate, because it can not show the best colors of the goods, can not achieve the purpose of attracting consumers .

3, LED Products used in several major advantages of low temperature lighting
Compared to CCFL fluorescent lamp cold light source, LED  (super high power led) used in low temperature lighting, or has a special advantage. First, LED, even at low temperatures of minus 40 degrees Celsius, can achieve instant start and requires no special circuit or programming. LED luminous efficiency is almost unaffected in the low temperature and may even be better than the normal environment. The three LED is a point light source, with a small, point to the characteristics of the optical arrangement in accordance with the design requirements for refrigerated cabinets, display and other places. And the LED can provide sufficient uniform illumination better to see the product label. Fourth, the LED light color, color temperature, color rendering of the variability can be based on different lighting requirements for different products, select the appropriate LED light source, to achieve the purpose of attracting consumers. Is the difference between LED and CCFL power supply before CCFL must first after a buck DC / DC converter, it will wear out the 10% electricity, wear out 25% of electricity through the Inverter, and finally to Fluorescent tube of power about only 70%. But the LED Lights just after the LED  (super high power led)  Driver will be able to direct transmission of power, so that the efficiency of the transformer circuit to up to 90%, with a larger energy-saving advantage.

super led bulbs in led application

In order to solve the LED Lights heat dissipation problems, the future may be largely vertical structure of the LED structure, promote the technical development of the LED industry. I believe we all are heard, the following only from the technical surface are described, for information on the vertical structure of LED (super led bulbs) technology.

We know that the LED chip (super led bulbs) has two basic structure of the horizontal structure (Lateral) and the vertical structure (Vertical). The horizontal structure of the LED chip, the two electrodes on the same side of the LED chip, the current limit in the n-and p-type layer in the lateral flow, ranging from distance. The two electrodes of the vertical structure of the LED chips on both sides of the LED epitaxial layer, respectively, due to graphical electrode and the p-type cladding layer as the second electrode, the current almost all vertical flow through the LED epitaxial layer, very little lateral flow current can improve the current distribution of the planar structure the problem, improve the luminous efficiency can also solve P shading to enhance the LED light-emitting area.

We start to understand under the vertical structure of the LED manufacturing technology and the basic methods:

Manufacturing vertical structure LED chip technology, there are three main ways:
The growth of GaN films, the use of silicon carbide substrate, the advantage is in the same operating current conditions, the light fades, long life, the shortcomings of the silicon substrate absorbance.
Second, the use of chip bonding and peeling technology manufacturing. The advantage is that the light fades, long life, the deficiencies to be the surface of the LED in order to improve the luminous efficiency.
Is heterogeneous substrates such as silicon substrate GaN LED (super led bulbs)  epitaxial layer, the advantage of good heat dissipation and easy processing.

There are two basic ways: Peel the growth substrate, and stripped the growth substrate to create vertical structure LED chip. Which the growth of GaAs growth substrate on the vertical structure of GaP based LED chips have two structures:
Do not peel the conductive GaAs growth substrate: the stacked conductive DBR reflection layer on the conductive GaAs growth substrate, the growth of GaP based LED epitaxial layer on the reflective layer of conductive DBR.
Stripped GaAs growth substrate: Cascading reflective layer on the GaP based LED epitaxial layer bonded to a conductive support substrate, stripping the GaAs substrate. Conductive support substrate, the substrate of gallium arsenide, gallium phosphide substrate, the silicon substrate, metal and alloy.

In addition, the vertical GaN-based LED Grow Lights grown on silicon, there are two structures:
Stripped silicon growth substrates: metal reflective layer stacked on a conductive silicon growth substrate or conductive DBR reflection layer, the growth of GaN-based LED epitaxial layer on the reflective layer in the metal reflective layer or conductive DBR.
Stripping the silicon growth substrate: cascading metal reflective layer on the GaN-based LED epitaxial layer on the metal reflective layer bonded conductive support substrate, stripping the silicon growth substrate.
A brief description of manufacturing a vertical GaN-based LED process: reflective layer stacked on the reflective layer on the GaN-based LED epitaxial layer bonding the conductive support substrate, stripping the sapphire growth substrate. Conductive support substrate including metal and alloy substrate, the silicon substrate.

The GaP-based LEDs, GaN-based LED and ZnO-based LED of this type of through-hole vertical structure of LED compared to traditional structures LED has a large advantage, in particular in:
1, the vertical structure LEDs of all colors: red LED, green LED, blue LED and ultraviolet light the LED can be made through-hole vertical structure LEDs have great application market.
2, all of the manufacturing process in the chip (wafer) level.
3, no need to play the gold wire with the outside world power is linked through-hole vertical structure LED chip package thickness decreased. Therefore, can be used in the manufacture of ultra-thin devices, such as backlight.