With the rush of the market, as a consumer, the choice of led still to be calm, scientific analysis, the selection of the best cost-effective light source and lighting, the following describes the basic performance of several LEDs :
1, brightness. The brightness of the LEDs is different and the price is different. LEDs for LED luminaires shall comply with the laser class I standard.
2, anti-static ability. LEDs with strong antistatic properties have a long life and are therefore expensive. LEDs with an antistatic greater than 700V are usually used for LED lighting .
3. Wavelength. LEDs with the same wavelength have the same color. If the color is the same, the price is high. It is difficult for manufacturers without LED spectrophotometers to produce pure color products.
4. Leakage. The current LED is a unidirectional conductive illuminator. If there is a reverse current, it is called leakage, and the LED with large leakage current has short life and low price.
5, luminous. LEDs with different angles have different illumination angles. Special lighting angle, the price is higher. Such as the full diffusing angle, the price is higher.
6, life. The key to different qualities is life, and life is determined by light decay. Low light decay, long life, long life and high price.
7, the chip. The illuminants of LEDs are wafers, and the prices of different wafers vary widely. The chips in Japan and the United States are relatively expensive, and the prices of wafers in Taiwan and China are generally lower than those in Japan and the United States.
8, the size of the chip. The size of the wafer is expressed in terms of side length, and the quality of the large wafer LED is better than that of the small wafer. The price is proportional to the size of the wafer.
9, colloid. The colloid of ordinary LED is generally epoxy resin, and the LED with anti-ultraviolet and fire retardant is more expensive. The high-quality outdoor LED lighting should be resistant to ultraviolet rays and fire. Each product will have different designs. Different designs are suitable for different purposes. The reliability design of LED lighting includes: electrical safety, fire safety, environmental safety, mechanical safety, health and safety, and safe use time. From the perspective of electrical safety, it should comply with relevant international and national standards.
Since LED is a new product, China's national standard lags behind, but the country provides product qualification testing. LED lighting with international safety certification (such as GS, CE, UL, etc.) and national product quality certificate is expensive, because these products are reliable in safety design. Consumers are paying attention to the authenticity of the certificate. There are not many manufacturers with international safety certification and national product certification.
From the aspect of health, the price of products designed with non-toxic materials is high, especially for indoor LED lighting. Don't use cheap LED lighting with odor. At present, only a few LED manufacturers use non-toxic materials to produce, discerning methods. You can use your nose directly, and the smelly products are much cheaper than the odorless ones. Toxins like lead, mercury, and cadmium require professional analysis. From the perspective of applicable environmental safety, there is a reliable dust-proof and moisture-proof design, and the price of LED products with fireproofing, ultraviolet protection and low-temperature cracking is high.
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