Rare-earth high-brightness high-power LED lighting fixtures for light efficiency and heat dissipation


The continuous improvement of rare earth phosphors has benefited the overall lighting industry - metal halide lamps, high pressure sodium lamps, fluorescent tube energy-saving lamps and the latest high-power LED lamps.
In addition to structural simplification, rare earth high-power LED lamps integrate the following technologies: heat sink and lamp housing integrated heat dissipation structure, monolithic structure, so that the lamps are completely exposed in the ambient air, no regenerative cavity exists; rare earth alloy material production The heat conductivity of the radiator is high and the thermal resistance is low. The structure of the rare earth alloy uniform temperature plate makes the heat dissipation uniform and has no high temperature region; the precision matching technology between different heat conductive materials and the thermal deformation modulus matching technology make the contact tight and the thermal resistance is low; The use of high-efficiency heat-conducting dielectric materials reduces the thermal resistance of the contact surface; the aerodynamic and thermodynamic principles are used to design a perforated three-dimensional grid-like heat sink to form a “chimney-type” heat dissipation method to accelerate the air convection cycle, and the through-hole structure makes the dust have nowhere to be attached. The direct contact area between the heat sink and the air is ensured; the nano-thermal radiation coating increases the heat radiation capability of the lamp.
The continuous improvement of rare earth phosphors has benefited the overall lighting industry - metal halide lamps, high pressure sodium lamps, fluorescent tube energy-saving lamps and the latest high-power LED lamps.
High-efficiency light source conversion enables high-power LED lamps to improve light efficiency and reduce heat consumption. The same power consumption can have higher brightness; if the brightness is equal, it is equal to the heat loss. This is naturally beneficial for LED chips that are afraid of heat. However, since the energy that is actually converted into light energy to emit the illuminant is only about 30%, most of the energy remains in the form of heat on the LED chip.
The substrate material and solid crystal mode of the LED chip itself are becoming more and more efficient and heat conduction:
1. US CREE 's unique silicon carbide substrate is the highest thermal conductivity LED chip substrate. The 40x40mil chip can withstand 1000MA current. As long as the subsequent heat dissipation does not have this rated 1W power chip, 3W is used. There are no concerns about burning.
2. The chip of the traditional sapphire substrate, not showing weakness, developed a method of flip chip mounting chip. The two electrodes on the surface are turned to the bottom surface and directly soldered to the metal heat conductive substrate with silver paste. This heat transfer is more straightforward than the conventional use of thermally conductive silver paste. In addition, high-power LED chips from recent days, South Korea and Taiwan also have a method of adding a metal plating layer on the sapphire substrate, so that silver paste can be used instead of silver glue to solidify the crystal. After the silver paste is cured, the thermal conductivity is close to that of pure silver, which is higher than the thermal conductivity of the silver paste.
Improvement of Thermal Conductive Copper Sheet --Diamond-Copper Composite
If the LED chip is not directly bonded to the circuit substrate by COB , a material with fast heat conduction is used as an intermediate medium for connecting the heat sink fins. Copper is a material that is only slightly inferior to silver in metal, and its price is lower, so copper is currently the most common thermal transfer material for high-power LED chips.
However, the coefficient of thermal expansion of copper ( about 19) is much larger than the coefficient of thermal expansion of the sapphire substrate (about 5). Therefore, the use of copper as a chip thermal carrier in the harsh environment, there is a risk of chip chipping. The chip size is limited. Nowadays, diamond-copper composite sheets have been developed in China. The thermal conductivity is higher than that of pure copper; the thermal expansion coefficient is lower than that of copper. It is expected that after mass production, the price can be accepted by manufacturers that produce high-power LED chip integrated blocks. The latest experimental report, using a 100W integrated module comparison, with a pure copper module at a chip temperature of 75 degrees Celsius, the module temperature of the diamond-copper composite chip is only 65 degrees Celsius.
 

SMD2835 LED Strip Light is the power lamp beads SMD super bright LEDs with 0.1W 0.2W and 0.5W. 2.8 because of its size (length) × 3.5 (width) × 0.8 (thickness) mm, according to post solid piece LED lamp beads Size naming, named 2835 lamp beads. 2835 warm white / white (2700-6500K): 20-22 lumens luminous flux SMD 2835 3014 is the second after the upgrade, the overall performance is better, more competitive. 2835 circuit board and is not the same as the 3528, but also can replace the use of brightness, heat better than 3528.

smd2835 led strip light smd2835 led strip light

SMD 2835 LED Strip Light of the light source LED2835 lights. SMD chip type genus, the carrier is a soft FPC board. That flexible circuit boards, most of the width of 8MM, thickness of less than 1MM. Each FPC factory length of 0.5 meters. Can be two or several mutually welded. Produce a good SMD 2835 Led Strip Light of the length of the factory 5M roll, anti-static disc and anti-static bag, portable and easy to transport.

SMD 2835 LED strip light can be classified from the following aspects:

1. Color: FPC main color yellow board, whiteboard, blackboard, can be customized. SMD 2835 LED strip light luminous colors as same as ra90 led strip: white, warm white, red, yellow, blue, green, purple.
2. Waterproof: SMD 2835 LED strip light due to apply to a different location, waterproof grade is divided into not waterproof, Epoxy waterproof, waterproof casing.
3. Lamp beads: on the FPC can be attached to many SMD 2835 LED strip light lamp beads, so the per meter FPC, lamp beads per meter 30 lights, 60 lights per meter, 120 lights per meter three general to apply to different brightness requirements The place.

smd2835 led strip light product show


We focus on LED area, is a high-tech lighting enterprise deal in develop, produce and sales.
Owns DIP LED,SMD LED professional production lines and LED lighting products lines, the produce volume per month for DIP LED,SMD LED is 50 million pieces, forSMD 2835 LED strip light is 500 thousands meters, for LED flexible strip light for car is about 200 thousands pairs, for LED tube light is 50 thousands pieces, for LED Spotlights are 200 thousands pieces, for LED ceiling light are 50 thousands pieces.
Mingxue Optoelectronics Co.,Ltd. has apply the I S O 9 0 0 1: 2 0 0 8 international quality management system certificate, we apply the CE, RoHS and SAA certificate for our led lighting product.


Our R & D team can handle highly customized designs and offer OEM and ODM services.
We hope to set up a long-term partnership with you through our high quality products and our Sincere Service!

SMD2835 LED strip light packing:

smd2835 led strip light


SMD 2835 LED strip light

SMD2835 LED Strip Light

Smd2835 Led Strip Light,Computer Led Strips,White Light Strip,Motorcycle Led Lights

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