The use of LED in home lighting is still in the auxiliary light source stage.
In 2009, the leader of global lighting - Philips, high-profile LED home lighting into the main direction, while the home lighting giant Op has also officially launched Meizu dimming remote LED ceiling lights, so that we can not help but see the potential of LED into the home lighting and hope.
However, Chen Dahua, a professor at the Institute of Electric Light Sources at Fudan University, calmly pointed out that although the current development potential of LED in the field of lighting is very large, it is an indisputable fact that it is difficult to study as a lighting subject and the product quality is far from mature. Tan Haojun, general manager of Liquan Lighting, who has done a good job in the field of LED desk lamps, is also not optimistic about the use of LED in home lighting. He said: LED can be used as a starting point in the home lighting, and if it is the main Lighting is more difficult. This also means that LEDs as the main source of light really enter the homes of ordinary people, and it takes more time.
Highlights of LED lighting
For consumers, in order to create a warm home atmosphere, lighting is indispensable, the light is projected on the ground, on the walls, furniture, and the magical effect is difficult to describe in words. Therefore, in the choice of home lighting, in addition to the emphasis on style, consumers pay more attention to the lighting effect of the product, and the lighting effect is the light source. Therefore, home lighting puts certain requirements on the light source.
LEDs are solid-state semiconductor devices that convert electricity directly into light. It has the unparalleled advantages of traditional light source, and can be applied to the requirements of light source in home lighting. The specific performance is as follows: 1. Safety. LED uses low-voltage power supply, which is a safer power source than high-voltage power supply. This is very suitable for the safety-oriented household consumer; 2, energy saving. Energy consumption is 80% lower than that of incandescent lamps with the same light efficiency. It can save energy and save money for consumers. It is a two-pronged thing; 3. Environmental protection. LED is made of non-toxic materials, does not pollute the environment, can be recycled and reused, is very suitable for families; 4, long life. In theory, the life expectancy can reach 100,000 hours, and the light decay is 50% of the initial; 5. Rugged and durable. The LED is basically a small chip that is encapsulated in epoxy resin, which is stronger than the bulb and the fluorescent tube; 6. Small size. It can be prepared into various shapes of devices, and is suitable for changing environments. It can also be integrated with the home environment through the luminaire design to achieve the effect of seeing no light. 7. Brightness and dimmable color can meet the needs of home lighting. The requirements of the color atmosphere.
More importantly, due to the controllability of LED light sources, home lighting can be brought into the intelligent era. LEDs can be combined with computers to take full advantage of their dimming characteristics, perform full color temperature adjustment, and build intelligent lighting systems to provide consumers with the most comfortable and efficient lighting at specific times. For example, the Meizu dimming remote control LED ceiling lamp launched by Opus can adjust the brightness according to different life scenes, and it is also equipped with a remote control switch, which can delay the light off after 30 seconds or 30 minutes by remote control, providing people with a life. Convenience.
Technology and supporting design still need to be improved
Just like Liu Yun, general manager of TNV Tianli Lighting Business Unit, LED is still in the early stage of growth in home lighting. Although LEDs have many advantages in home lighting, LED lighting is not perfect, and various technologies need further development. For example, LED lighting products' output power and luminous flux, secondary optical design, thermal design and other issues need to be gradually improved.
In this series of questions, Liu pointed out that the biggest difficulty in using LEDs in home lighting is the heat dissipation problem. Because of the limitation of the principle of LED illumination, it is necessary to have a heat dissipation function under the premise of ensuring safety. If ordinary plastic materials are used, the LED lights will become softer after a few hours. Therefore, in order to ensure the life and safety of the lamp, the LED light source puts higher requirements on the design and materials of the structural parts.
At present, the heat-dissipating material generally used in the market is aluminum, but the aluminum material is relatively expensive, and the price of the kitchen lamp is too high, and the market is difficult to accept. When the product is usually made, the selected material has a heat resistance temperature of 120 degrees. When we are developing LED kitchen lights, we use the raw materials of Bayer in Germany to do experiments. It can be flame retardant, weather resistant and temperature resistant. As the main light source of home lighting, LED light in the light effect, color rendering, color temperature, power and other issues also need to be resolved.
In the production process, compared with the traditional home lighting, LED home lighting is different: 1, the lamp's high temperature, high pressure, low voltage and other aging procedures are different; 2, electrical control, alternating current control changes, because LED is to Direct current; 3, with the design, material, shape, internal structure must have a corresponding change, especially pay attention to the use of the breaker, so that the lighting and LED light source can operate relatively independently without affecting each other. When talking about the different production process of LED home lighting, Li Junjie, chairman of Mini Lighting, came. Due to the different production processes and the supremacy of consumers' choice of home lighting, when LED is applied to home lighting, the requirements for materials, style design and epitaxial materials will be higher.
Cost is the biggest bottleneck in development
Industry insiders have said: At present, the reason why LEDs can not enter the ordinary family, the biggest problem is the price. The main factor affecting the price is that the cost of LED home lighting is too high.
The principle of illumination determines the cost of the product. LED home lighting is at least 100% more expensive than traditional home lighting. Specifically, the cost of the light source itself is more than half that of the traditional light source. 2. Because the light source's principle of lighting the material of the structural part is quite high, resulting in cost. Adding half of the price, that is, the structural parts will be half higher than the traditional ones. Liu Yun, general manager of TNV Tianli Lighting Division, pointed out. Among them, the cost of the light source itself is mainly LED chips, because most of them rely on imports, so the price remains high.
Xie Yingxiong, general manager of Xiongji Lighting, told reporters about the LED modern lights that he launched in September: the cost of raw materials for this LED modern lamp is 800-1000 yuan, and the market price is 2,000 yuan. It uses more than 600 lamp beads (50 lamp cups, one lamp cup and 12 lamp beads), and only the lamp bead cost is 700-800 yuan; if a halogen lamp is used as the light source, a modern low-voltage lamp needs twenty or thirty. A lamp bead, the cost of the lamp is only a few dollars.
Even if you just do an LED desk lamp, the cost is not low. Tan Haojun, general manager of Liquan Lighting, pointed out that ordinary desk lamps are generally 100 yuan, and LED desk lamps will be 30%-40% higher - this is still a conservative estimate. Because LEDs require aluminum substrates, heat sinks, drivers, etc., several add up to almost half the cost of LED drivers. The cost of the light source is the biggest. Simple luminaires, LED light source costs 60%. Complex, you need to open the mold, etc., the cost is even greater.
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