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Fluorescent lamp (hand-held)
Fluorescent lamp, also known as fluorescent lamp. The traditional fluorescent lamp, i.e. low-pressure mercury lamp, uses the principle that low-pressure mercury vapor releases ultraviolet rays after being electrified, so that fluorescent powder emits visible light, thus it belongs to a low-pressure arc discharge light source.
In any case, tricolor fluorescent lamps should be used instead of halogen fluorescent lamps. Tricolor lamps have the advantages of high luminous efficiency, good color rendering and longer service life. Although the price is expensive (about twice as expensive), due to its high light efficiency, it not only has good energy saving effect, but also reduces the operation cost. In addition, as the number of lamps used is reduced, the cost of lamps and ballasts is saved, and the total initial construction cost of the lighting system is reduced.
Using high-power lamp beads: in functional lighting places (except for decorative requirements), its light efficiency is higher.
In general, medium color temperature lamps should be used: the color meter of the light source (expressed by correlated color temperature) should be selected. in addition to the special requirements of building color, it can be generally determined according to the illuminance level: in brief, cold color temperature (high color temperature) should be used for high illuminance (> 750lx), medium color temperature should be used for medium illuminance (about 200 ~ 1000 LX), and warm color temperature (low color temperature) should be used for low illuminance (≤200lx). Because warm color and warm light make people feel comfortable under low illumination, but feel hot and dry under high illumination. However, cold color temperature light feels comfortable under high illumination and dim and cold under low illumination. The illuminance in most places is between 200 and 750 Lx, and it is better to use medium-temperature light source. Moreover, fluorescent lamps with medium and low color temperatures have higher luminous efficiency than lamps with high color temperatures, which is also beneficial to energy conservation.