LED is a photoelectric device. In the working process, only 10% to 40% of the electrical energy is converted into light energy, and the rest of the electrical energy is almost converted into thermal energy, so that the temperature of the LED rises. LED temperature rise is the main cause of LED performance degradation and failure. It can be said that the heat dissipation problem is the technical bottleneck of the current development of semiconductor lighting technology!
In high-power LEDs, heat dissipation is a big problem. If no heat dissipation measures are taken, the wick temperature of the high-power LED will rise rapidly. When the junction temperature (TJ) rises above the maximum allowable temperature (typically 150 °C), the high-power LED will be damaged by overheating. Therefore, in the design of high-power LED lamps , the most important design work is the heat dissipation design.
In response to the above questions, the following is a detailed study of CREE's research on LED heat dissipation . This document mainly introduces the following:
table of Contents
First, the necessity of LED heat dissipation
Second, LED junction temperature Tj and thermal resistance R calculation
Third, the thermal management of LED products
Fourth, the heat dissipation design of LED lamps
1. Selection and design of lamp beads and substrates
2. Selection and use of thermal paste
3. Selection and design of the radiator
V. Prospects for heat dissipation technology
Download address connection: LED heat guide (detailed illustration)
[Edit: Vessel]
LED wall packs & wall pack lighting saves on operation cost compared to metal halide fixtures. Led Wall Pack is a compact and lightweight outdoor fixture designed for parking lots, walkways and doorway.Led Wall Lamp features a classic design, so you don't have to update your look by swithing to energy saving LED technology.Wall Pack Light Fixture is designed for outdoor wall mounted lightingapplications requiring white uniform light, long life and low maintenance.LED wall pack fixtures are with cutoff and full glass styles. LED wall pack lights are used for energy efficient commercial lighting,they will light up your business's outdoor area the way you want.
Led Wall Pack,Solar Wall Lights,Led Wall Lamp,Wall Pack Light Fixture
Shenzhen Bbier Lighting Co., Ltd , http://www.chinabbier.com