General lighting includes two categories: indoor lighting and outdoor lighting. Both types of applications require high luminous efficiency, long life, and environmental protection. The main difference is the lighting effect and quality of the indoor lighting source (including color rendering, color consistency, light source emission and uniformity, Human eye comfort, etc.) have higher requirements, and the consumer groups they face are more sensitive to the price of lamps. On the other hand, the advantages of the luminous efficiency of the blue chip need to be further improved and limited by the packaging technology of the white LED. Most of the current semiconductor lighting fixtures are high color temperature and cool white light, and the consistency of the color product is not as good as that of the conventional lighting. The intention is that semiconductor lighting fixtures are currently in large-scale applications in outdoor lighting, and have just begun to take off in indoor lighting. Therefore, limited by cost and lighting quality, semiconductor lighting will be the first to be applied in large-scale outdoor lighting, and then gradually enter the field of indoor lighting with the continuous development of technology.
A typical application of outdoor lighting is street lighting, which is an important part of urban lighting, and its power consumption accounts for a large part of the total lighting power. The traditional street lamp adopts high-pressure sodium lamp, and the high luminous efficiency of high-pressure sodium lamp has a low color rendering index, which makes the color distortion of the irradiated object very obvious; the color rendering of high color rendering high-pressure sodium lamp is improved, but its luminous efficiency and life span are all Loss; limited by its short life, it is necessary to carry out expensive high-altitude maintenance operations frequently. Generally, the high-pressure sodium lamp has poor light distribution performance, that is to say, the uniformity of road illumination is not good enough, and in order to meet the uniformity requirements of road illumination, the high-pressure sodium lamp street lamp generally adopts a rated power much larger than the illumination requirement under the lamp post. As a result, energy is wasted. Therefore, the development of new high-efficiency, energy-saving, long-life, good color rendering index and environmentally friendly street lamps is of great significance for urban lighting energy conservation. The huge market demand in the field of outdoor lighting has promoted the continuous improvement of the technical level of lamps such as power LED street lamps, the cost has been declining, and new products have emerged.
The most commonly used products for indoor lighting are incandescent and fluorescent lamps. Incandescent lamps have extremely low luminous efficiency, only a few lumens per watt, while fluorescent lamps contain harmful substances such as mercury, which is not conducive to environmental protection. Therefore, indoor lighting has a stronger demand for efficient and environmentally friendly lighting products. Although the current white LED devices have surpassed incandescent lamps and fluorescent lamps in terms of luminous efficiency and environmental protection, the lighting effects and quality of the lamps formed by them have not rapidly formed the advantages of traditional illumination sources, and their applications in indoor lighting. just began. However, the huge market demand for indoor lighting is bound to drive the rapid development of packaging and system-level application technologies for indoor lighting applications.
Wireless Gaming Keyboard is a keyboard disk with no direct physical connection to the computer, through infrared or radio waves to send input information to a special receiver. Bluetooth devices, to be precise. The so-called Bluetooth technology, in fact, is a short-range radio technology, the use of "Bluetooth" technology, can effectively simplify the communication between mobile communication terminal devices such as palm computers, laptops and mobile phones.The so-called Bluetooth technology, in fact, is a short-range radio technology, the use of "Bluetooth" technology, can effectively simplify the communication between handheld computers, laptops, mobile phones and other mobile communication terminal devices, also can successfully simplify the above devices and the Internet communication between the Internet, Thus, the data transmission between these modern communication devices and the Internet becomes more rapid and efficient, which broadens the way for wireless communication. Bluetooth supports point-to-point and point-to-multipoint communication using a decentralized network structure, fast frequency hopping and short packet technology, and works in the 2.4ghz ISM (industrial, scientific, and medical) band used worldwide. Its data rate is 1Mbps. Time division duplex transmission scheme is used to realize full duplex transmission.
Now there is the latest technology 2.4G wireless keyboard and Wireless Gaming Mouse, what is 2.4G, it is actually a wireless transmission technology, 2.4G is on behalf of a data transmission rate, now on the market 2.4G wireless keyboard and mouse is a USB receiver, mini, general plugged in the computer, can be used directly.Bluetooth devices of any brand can be charged in up to three hours. You can usually power off by seeing the indicator on the keyboard change color or turn off. Charging a product for a long time can cause serious damage to it. If you're not using a wireless keyboard for a long time, it's best to charge your device once a month or so. In case its built-in battery goes dormant and cannot be recharged.
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