(Fuzhou Xie Telai Lighting Co., Ltd., Fuzhou 350014)
Explore the unique discharge mechanism of a new lighting product, GLED (Gas Light Emitting Diode). The e-winding discharge theory of GLED is proposed by comparison with the existing discharge mode.
Key words GLED ring cathode e-spinning discharge
introduction
GLED uses a different discharge mode than the existing discharge lamps, and has innovated a new electric light source with incandescent lamp appearance, energy-saving lamp effect and electrodeless lamp life. How to confirm the novel working mechanism of GLED? How to understand the status of GLED in the evolution of electric light source? How to evaluate the value of GLED in the lighting market? These confusions will only be solved after GLED has the theory of e-injection and discharge!
There are many ways of gas discharge, mainly: positive column discharge, negative halo discharge, positive halo discharge, hollow cathode discharge, and the like. In this paper, a brief review of the relevant discharge modes is given in the schematic diagram. In the schematic diagram, a is the anode, c is the cathode, Ra is the anode radius, and Rc is the cathode radius.
1 positive column discharge
The positive column discharge is based on a parallel electrode and a uniform electric field, showing a negative resistance characteristic. The working area of ​​the positive column discharge is indispensable for the bright and dark areas such as the cathode drop zone, the negative glow zone, the Faraday dark zone, the positive pillar zone, and the anode zone. The positive column area is the main working area, and the discharge power is also mainly determined by the length of the positive column area. The ordinary tubular fluorescent lamp adopts the working mode of the positive column discharge. (see picture 1)
2 negative halo discharge
It is assumed that a large-diameter cylinder is used as an anode and a small-diameter cylinder is used as a cathode in the electrode structure. At this time, the electric field intensity near the cathode is large, and the corona layer occurs near the cathode, which is called a negative halo discharge. Strong excitation and ionization occur in the negative corona layer. Obviously, this negative halo discharge method is suitable for atomic spectroscopy. (See Figure 2)
