Hi-semicon Characteristic
A light-emitting diode (LED) is a semiconductor light source, as its technology are increasingly used in lighting applications, it is bringing an energy saving and environment friendly green storm. LED light is a real green lighting product. LED luminaries are consisting of LED array, lens, PCB board, heat sink, power supply etc.
Hi Semicon always uses high standard products and advanced manufacturing technology to win our competitors.
1. Top led sources chosen by Hi-semicon.
（1）LED array of led tube comparison as below：
（A:DIP LED TUBE） （B：Hi-semicon SMD led tube）
A：Advantage – cheap price
Shortcoming –Poor heat dissipation
B：Hi-semicon uses our own high power LEDs. Hi-semicon also chooses CREE, Bridgelux, OSRAM LED source. Though the price is high, with good heat dissipation and long lifespan.
（2）Different led array of led bulb comparison as below:
（A：Multi-chips MR16 LED bulb 3W） （B：Hi-semicon MR16 bulb 3W）
Two same MR16 3W product，Hi-semicon uses high quality CREE LED source，which is higher light efficacy, more purer light and Better system stability.
2. Hi-semicon chooses lens carefully to ensure the good light distribution and lumen flux.
（Different kinds of lens and light distribution）
The PCB of Hi-semicon is thin insulating, non-magnetic, high temperature resistance and rapid heat conduction that secure the internal thermal resistance is small.
A：After wave soldering, PCB aluminum plate does not change color.
B：After wave soldering, PCB aluminum plate does change to yellow.
3.Heat sink developed by Hi-semicon
Why the heat sink is so important?
（A：Temperature of Cree and lumen depreciation graph）
（B: Depreciation of Lumiled graph）
From the graph we can see reducing the junction temperature is good for delaying the lumen deprecation. When junction temperature reduced from 110℃ to 135℃, the lifespan will reduce from 50,000Hrs to 20,000Hrs.(See picture B)
Heat dissipation is a key problem to extend the lifespan, thus to reduce the junction temperature need a good heat sink to expels the heat rapidly.
High bay light heat sink introduction graph:
Note：For common heat sink product which the temperature near led array is higher than the position is far from the LED array. Hi-semicon LED high bay light uses phase change liquid cooling technology system which control the junction temperature always around 60- 65 Celsius, it will reduce the depreciation for longer lifespan.
4.LED power supply is an inverter to transform the AC power supply to DC power of applicable voltage and current to drive the LED light. Hi-semicon uses high efficiency, high proof, and high reliability power supply.
（Cutaway view of Meanwell power supply）
（Strictly test of power supply temperature ）
Hi-semicon is a professional environment friendly solution provider, focusing on quality and listening needs of market. Please join us, to light up the world.
Hi-semicon technology virtually eliminates maintenance costs and the Hi-semicon warranty is unmatched in the industry. Hi-semicon stands behind its fixtures and light engines guaranteeing that they shall be free from defects in materials and workmanship for a period of 2 years from date of manufacture. Hi-semicon also offers a 2year warranty on all power supplies. Contact Hi-semicon for full warranty language, exceptions, and limitations.
