High-power fluorescent lamp

Abstract

The invention relates to a high-power fluorescent lamp, and belongs to the field of illumination electricity-consuming vacuum devices. The high-power fluorescent lamp is composed of a filament (1), a modulator tube (5), fluorescent powder (6), an anode (2), a filament support (7) and a thermal insulation screen (4). The filament (1) is fixedly arranged at the two ends of the modulator tube (5) through the filament support (7), and extends out of the modulator tube (5). The thermal insulation screen (4) is arranged between the filament (1) and a core column in a sleeved mode. The fluorescent lamp is characterized in that the anode (2) is annular and fixedly surrounds the filament (1) through supporting rods (3). The high-power fluorescent lamp has the advantages that a lamp wick is simple in structure, and the high-power fluorescent lamp is easy to manufacture, low in cost, high in product percent of pass, capable of controlling mercury pollution and ensuring health of staff, and the like.

Description

technical field [0001] A high-power fluorescent lamp with power above 100W belongs to the field of electric vacuum devices for lighting. Background technique [0002] At present, the first problem encountered in the manufacture of high-power fluorescent lamps with a power of more than 100W is how to prevent the steam pressure from increasing due to the increase in heat loss, so that the light efficiency is reduced, that is, when the lamp current density increases to a certain level and continues to increase, the lamp On the contrary, the light effect will decrease, this is because when the current density increases, the radiation at 253.7 nanometers decreases due to the increase of the probability of the second type of inelastic collision in the text I, and on the other hand, it is excited to 6 3 P 1 Energy level atoms may also collide with electrons and be excited to a higher energy level, at 6 3 P 1 The lifetime of atoms in the state is relatively long, so when the curr...

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Problems solved by technology

[0008] 1. It is necessary to mechanically press and chemically clean the sheet or rod-shaped anode of the heat shield first, so the material selection is exquisite. The cost is high and the process is complicated

[0009] 2. When the wick is assembled, each lamp needs to add 8 solder joints, and the labor efficiency is low. In the process of making lamps, only solder joints falling off affect the pass rate to about 4%.

[0010] 3. When the lamp is produced, direct injection of mercury is used, and the mercury vapor pressure is high, which reduces the lamp efficiency, pollutes the environment, and endangers the health of operators

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