1. Luminous efficiency: The luminous efficiency of fluorescent lamps is about 55 to 80lm/W, while that of LEDs is above 100lm/w ... Now the difference between them is nearly double, and it may be even greater in the future.

Second, the efficiency of lamps: the efficiency of lamps mainly refers to the effective light effect, because fluorescent lamps emit light at 360 degrees, and the light emitted in the opposite direction is useless. Therefore, fluorescent lamps usually use white lampshades, which can reflect a considerable part of the backlight back. The light emitted by LED fluorescent lamp is 120 degrees, so all light is effective light.

Third, power supply efficiency: Because lamps need special power except incandescent lamps, power supply efficiency also affects the efficiency of the whole lamps.

Fourth, the length of life: the life of a well-designed LED fluorescent lamp can reach 50,000 hours. The life of fluorescent lamps is usually less than 20,000 hours.

5. Lighting principle: The lighting principle of fluorescent lamps is different from that of LED lamps. Fluorescent lighting means that the ballast generates high voltage at the moment of power-on, which excites the discharge between two pins inside the lamp tube, and then excites the fluorescent powder to emit light. This process produces a high fever. LED luminescence is electron migration inside the semiconductor, and almost no heat is generated during the luminescence process.

Sixth, the principle of light color generation is different: different types of fluorescent powder and gas filled in fluorescent tubes make fluorescent tubes show different light colors. Its technical quality is also very different. Fluorescent tubes are coated with halogen phosphors and filled with argon and krypton argon mixed gas. The light colors of fluorescent tubes are: cold white fluorescent tubes and warm white fluorescent tubes.

Disadvantages of traditional fluorescent lamps

First, the quality of light is poor.

First of all, the glare of the eyes with direct light source is serious, which is very easy to cause teachers' eye fatigue and students' inattention.

Secondly, the high frequency flash source causes students' eye fatigue and vision decline.

Furthermore, the color rendering index of light source is low, and the spectrum of ordinary fluorescent tubes is incomplete, which will cause insufficient color and color deviation, which will directly affect children's color discrimination level.

Finally, the lights in the classroom have a high color temperature and the light source is white. It is very easy to cause students to get excited and tired easily, which leads to long-term myopia.

Second, the illuminance distribution is uneven, and the average illuminance and symmetry are not up to standard, which can not meet the requirements of national industry standards.