DOE develops new LED lights using aero-engine air jet technology

The US Department of Energy (DOE) and the University of Maryland have developed a new type of LED light. The LED lamp has 1500 lumens to release the equivalent of a 100-watt halogen lamp and consumes only 1/3 of the energy. The product uses the high-speed air jet technology originally used in GE aero engines.

Despite the superiority of LEDs in terms of energy and longevity, there are still critics who believe that LED lights are not bright enough. This is closely related to the heat dissipation problem of general LEDs. Inside this LED lamp, there are two small bellows-type devices driving to generate high-speed air jets, and the generated airflow impacts the built-in heat sink to achieve cooling effect. They take in air and then eject air from the same opening at a faster rate, in effect promoting high-speed air flow through expansion and contraction. The idea came from the design principle of the surface airflow control system used in GE's jet engines.

VFD Grid

Vacuum fluorescent display, referred to as VFD, is a low-energy electroluminescent display devices, the working principle and CRT similar. It has the incomparable advantage of liquid crystal display (LCD) in applications where there is a large variation in ambient brightness and no strict requirement for low power consumption, and is now widely used in audio-visual equipment, home electronics, automotive instruments, office equipment and instrumentation.

The structure of a VFD board is a typical vacuum triode structure, consisting of a cathode, a grid and an anode. In between the cathode and the anode there's a thin mesh of metal called the Grid that can be switched on or off, controlling the flow of electrons from the cathode to the anode. This VFD grid mesh is made of a thin metal plate with a thickness of 30 to 50μm, which is lithographed and made into a highly transparent fine lattice or tortoise-shaped metal mesh. When a positive voltage is applied to the grid, electrons emitted from the filament are accelerated and diffused toward the anode. When a negative voltage is applied to the grid, electron flow to the anode is cut off.

We custom VFD Grid with drawings provided by customers. The raw material we use for etched VFD Grid is SUS430 stainless steel. We are equipped with professional metal etching equipment and exposure development equipment. Our etched manufacturing capacity can achieve 0.05mm.

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