The emergence of LED light tubes has broken the traditional design methods and ideas of light sources. There are currently two newer design concepts.　　1. Scene lighting: design lamps and lanterns based on the needs of the environment. The scene lighting takes the place as the starting point, and aims to create a beautiful and gorgeous lighting environment to set off the scene effect and make people feel the atmosphere of the scene.　　2. Mood lighting: Design lamps based on human needs. Emotional lighting is based on human emotions, creating a mood-like lighting environment from a human perspective. The mood lighting is different from the scene lighting. The mood lighting is a dynamic lighting method that can meet people's spiritual needs, making people feel emotional; while the scene lighting is static, it can only emphasize the needs of scene lighting, but cannot express Human emotions, in a sense, mood lighting covers scene lighting.　　 Replacement of LED light tubes: 　　 LED light tubes are completely consistent with fluorescent tubes in terms of use and installation, which saves a lot of social costs of lamp holder replacement. From this perspective, it has the ability to completely replace fluorescent tubes. Since LED tubes are more complicated in structure than fluorescent tubes, even in the case of mass production, the product price will be higher than that of fluorescent tubes. However, with the mass production of LEDs, the cost is gradually decreasing, approaching ordinary households. Acceptance. The structure of the LED light tube:, its basic structure is a piece of electroluminescent semiconductor material, placed on a leaded shelf, and then sealed with epoxy resin around it to protect the inner core wire, so the LED light tube Good seismic performance.　　 The core part of the light-emitting diode is a wafer composed of p-type semiconductor and n-type semiconductor. There is a transition layer between p-type semiconductor and n-type semiconductor, which is called p-n junction. In the PN junction of certain semiconductor materials, when the injected minority carriers and the majority carriers recombine, the excess energy is released in the form of light, thereby directly converting electrical energy into light energy. With reverse voltage applied to the PN junction, it is difficult to inject minority carriers, so it does not emit light. This kind of diode made by injection electroluminescence principle is called light-emitting diode, commonly known as LED light tube.　　 When it is in a forward working state (that is, a positive voltage is applied to both ends), when the current flows from the anode of the LED light tube to the cathode, the semiconductor crystal emits light of different colors from ultraviolet to infrared. The intensity of the light is related to the current.