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Interpretation of the New National Standard for Table Lamps, Table Lamps Purchase and Avoid Pit Raiders

Interpretation of the New National Standard for Table Lamps, Table Lamps Purchase and Avoid Pit Raiders

Hygienic requirements for general classroom lighting fixtures and reading and writing desk lamps: Lamps and lanterns should pass the national compulsory product certification. The correlated color temperature of ordinary classroom lighting fixtures should not be less than 3300 K and not greater than 5300K. The general color rendering index Ra should not be less than 80, and the R9 of LED lamps should be greater than 0. For lamps that are not exempt from retinal blue light hazard assessment, the blue light hazard group of general classroom lighting lamps and reading and writing desk lamps should reach RG0, and the blue light hazard group of blackboard local lighting lamps should reach RG0 or RG1. The fluctuation depth of the lamp should not be greater than the corresponding limit to reduce the impact of flicker on the human eye. 6. When the reading and writing desk lamp is in the normal working position, the illuminance and illuminance uniformity of the lamp should meet the corresponding requirements, and should have shading properties to ensure that the light is bright and uniform without excessive glare.

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Difference between fluorescent lamp and LED lamp

Difference between fluorescent lamp and LED lamp

1. Luminous principle Ordinary lamp is a fluorescent lamp, light-emitting principle and LED tube is not the same. Fluorescent lamp light is the ballast power instant to generate high voltage, stimulate the discharge between the two pins inside the lamp, and then stimulate the phosphor light, this process produces high heat. LED luminescence is the electron migration inside the semiconductor, resulting in luminescence, and the luminescence process does not generate heat. (2) Heat generated The traditional fluorescent tube will produce a lot of heat energy, and the LED fluorescent lamp is all converted into light energy, will not cause the waste of energy. 3. Service life The life of the LED can reach more than 50000 hours (without power supply), and the service life of the fluorescent tube (without power supply) is 10000 to 20000 hours. 4. Light efficiency LED tube has high luminous efficiency and high brightness. Now on the market good LED fluorescent tube light efficiency can reach more than 130, is about twice the fluorescent light efficiency. In other words, the 18W LED fluorescent lamp can be used as a 36W fluorescent lamp. From the actual lighting effect, the 130lm/W 18W LED lamp can be used as a 48W fluorescent lamp.

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