Since the development of lawn lamps, different types have been derived according to the use environment and design style. They are divided into six categories: European lawn lamps, modern lawn lamps, classical lawn lamps, anti-theft lawn lamps, landscape lawn lamps and LED lawn lamps.
European lawn light:
Its design style adopts some European art elements of European countries and abstracts its expression.
Modern lawn light:
Its design style uses modern art elements and uses a simple style of expression.
Classical lawn light:
Its design uses Chinese classical elements to be applied and modified, such as: palace lanterns.
These three types of lawn lights represent different styles and are derived from most manufacturers in order to cater to the design style of urban buildings.
Anti-theft lawn light:
The design is to prevent the phenomenon of the sale of lawn lamps by some criminal gangs in the society. The anti-theft lawn lamps are mostly made of polymer composite materials, and their strength and corrosivity are slightly higher than steel and aluminum, but they are expensive.
Landscape lawn light:
Landscape lawn lamps are mostly designed with landscape decoration and supplemented by lighting functions. Most of them are rockery, plants and other main design elements.
LED lawn light:
At present, most lawn lamps use led as a light source. The LED has a long service life and can reach above 100,000 hours. The use voltage is low, and it is very suitable for use on solar lawn lamps. In particular, led skills have achieved their critical breakthroughs, and their characteristics have greatly improved in the past five years. At the same time, the price/performance ratio has also been greatly improved. The led is powered by low-voltage DC, and its light source control cost is low, the brightness is adjusted, and the frequency switch is presumed, and it will not adversely affect the performance of the LED. Controlling color, changing the spread of light, and generating dynamic dreams are all approximate, so it is especially suitable for solar lawn lights. It has many inherent characteristics that can cause undesirable results if left unattended. However, the current luminous efficiency of selling LEDs in the market can only reach 15lm/w, and can only reach 1/3 of the three-color primary color energy-saving lamps.
From the cost point of view, the current cost per lm: Sanzi Town color base color high-efficiency energy-saving lamps (including current) 0.022 yuan, 2002 f5mm white light led cost is 1.9 ~ 3.0 yuan, the current production per lm cost is high, the difference is very different . From the perspective of application life, the life of three-color primary color energy-saving lamps (including electronic ballasts) can reach 6000 hours, and led can reach 100,000 hours. From the appearance, LED life is a three-color primary color energy-saving lamp (including electronic Tens of times the ballast), but it is not actually a cloud.
Most of the solar lawn lights accept super bright white light led, it is less than 10,000 hours when the super bright white light lumen maintenance rate reaches 50% of the initial intensity under 20ma. The electric light source of Fudan University has proved the above argument. . That is to say, in many environments, led is not the best solar lawn light source, unless it is a low-end, solar lawn lamp with a service life of only 1 to 2 years, which is about 1w of solar lawn light. For the solar lawn lamp above 1w, it is best to use a three-color base color energy-saving lamp. At present, there are some solar lawn lamps with 30~40 super bright white LEDs, and the input power is 2w. In this environment, if the three-color base color high-efficiency energy-saving lamp is used, the cost is only 1/10 of the LED, and the luminous flux is the original. 4 times, the low-voltage DC three-color primary color high-efficiency energy-saving lamp with 2~10w has been developed, and the life can reach 6000 hours.
According to the above analysis, it is believed that there is a low-power solar lawn lamp below 1w that regulates the brightness and darkness of the switch. As usual, LED should be used as the light source. However, when applying super bright white light led, it is necessary to pay attention to the problem of lumen maintenance rate, otherwise it will easily lead to confusion. For the solar lawn light with higher power, the current application of three-color base color high-efficiency energy-saving lamps is more reasonable. It should be emphasized here that the above conclusions are only the current analysis. When the level of led skills is raised, the cost falls, and the above conclusions must be changed.
To deal with solar lawn lights, considering the reliability, performance cost ratio, color temperature, and luminous efficiency, we think that the ideal light source should be a three-color primary color energy-saving lamp.
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