How much is a small desk lamp (price source network, for reference only)
Relatively speaking, FPC can be divided into two types: calendered copper and coated copper. Copper plating is cheaper, and calendered copper is more expensive.
Compared with patents, those with patents are more expensive and those without patents are cheaper.
Generally, the patent price is above 100 yuan. For example, Philips learning eye protection lights are between 100~300 yuan. The price of Guanya eye protection desk lamp is between 150~400. The price of Xinxing eye protection desk lamp is below 100. Integrated led eye protection desk lamp 100 (no patent desk lamp).
Fei Sen modern simple price is between 100~200. The price of modern fashion is between 200 and 300.
The price of Guanya decorative desk lamp is between 100~200.
The price of Xinxing eye protection decorative desk lamp is between 100~200.
The price of flash decorative desk lamp is between 150~300.
The price of comprehensive brand decorative desk lamp is below 150.
The price of touch-sensitive desk lamp is between 30 and 60, the price of rechargeable folding desk lamp with switch is between 15-30, and the price of creative portable desk lamp is between 30 and 50. Suitable for students, learning lighting is easy to carry, most of them are rechargeable, and it is more convenient to use.
In order to overcome the stroboscopic of 50hz fluorescent lamp, the high-frequency eye protection lamp uses the frequency of 40000 ~ 55000hz, which will inevitably bring electromagnetic radiation from high-frequency power supply. Environmental experts suggest that excessive electromagnetic radiation may cause palpitations, insomnia, leukopenia, memory loss, and even decreased immune function, and cause damage to the cardiovascular system and nervous system.
Selection skills of desk lamp
There are generally four kinds of light sources for writing desk lamps: incandescent lamp, halogen tungsten lamp, fluorescent lamp and led. The three types of light sources have their own advantages and disadvantages. Different people may like the color and brightness of different light sources and should be suitable for different people. In order to project most of the light to the desktop, the light source installation position of writing desk lamp is usually horizontal or downward.
When buying a writing desk lamp, you should not only check its optical performance, but also check whether other performance is qualified.
One pull, two adjustments, three shakes and four touches. "Unplug" means unplugging the plug of the power cord from the socket, and forcibly unplugging the power cord from the lamp cavity to see if the power cord is firmly connected. The power cord must not fall off from the lamp cavity. "Adjustment" refers to the adjustment of various working positions of desk lamps. No sound can be made during adjustment, and the adjusted working position should be locked conveniently and reliably. "Shake" is to adjust the desk lamp to the most unfavorable working position, and then gently shake the plane where the desk lamp is located to see if it is easy to fall over. If the desk lamp is unstable, it is easy to fall. "Touch" refers to whether the heating parts that are easy to touch when using, such as lampshades, are hot after the desk lamp is lit for a period of time (2 hours) to prevent accidental burns when using in the future.
How much is the small desk lamp? According to the brand and size of the small desk lamp, its price will be different. Before buying a small desk lamp, you can carefully look at its price and other knowledge before considering it, which will naturally help you buy a suitable small desk lamp product. When choosing a small desk lamp, you can pay attention to the relevant skills, which can often help you buy the right product, remind everyone that you don't know its purchasing knowledge, and you can look at its related knowledge to help you buy better.
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