Lighting as an indispensable living environment for lighting night life, with the advent of the era of science and technology, lighting systems are becoming more and more developed, people’s needs are becoming higher and higher, lighting requirements in different places will also be different.
When designing the lamp source, the energy efficiency of the light source and ballast selected in the design should not be lower than the energy saving evaluation value of the corresponding energy efficiency standard; The power density LPD limit for building night lighting should be in line with current industry standards.
Choice of light source
1. Indoor places
(1) To meet the issued illuminance standards, to ensure that each indoor space has a suitable illuminance. For example: the living room (living room), here to receive guests, but also to family gatherings, to take into account the needs of work and study, the illumination should be slightly higher; The restaurant should prevent accidents when eating, and the illumination should be high; The bedroom illumination should be low, so as to facilitate the master to rest.
(2) We should try to use lighting methods, lamps and types of light color to create an environmental atmosphere and improve the perception of space. For example, a variety of projective lights can be used to produce strong and concentrated brightness contrast, which will make the indoor space vivid and active; The use of diffuse light based on the reflector slot, soft light color, so that the indoor form a peaceful, relaxed, friendly and harmonious atmosphere; The use of ancient typical lamps to increase the environment of gorgeous, elegant atmosphere; The use of simple lamps can create a simple, peaceful atmosphere; The use of low color temperature warm color light source in cold areas, the use of high color temperature cold color light source in hot areas, can make the indoor light tone and, full of warmth.
(3) Lighting can also make people feel differently about the space. Generally speaking, a room with high illumination and high brightness feels larger.
2. Outdoor places
(1) Due to the complex working environment, affected by natural conditions such as temperature, ultraviolet light, humidity, rain, dust, chemical gases, etc., outdoor lighting should consider the impact of environmental factors on LED outdoor lighting when designing. At present, the domestic production of LED lamps (mainly street lamps) are mostly assembled using 1W LED multiple strings and parallel, which is called packaging technology. Modules of 30W, 50W or even larger are assembled to achieve the required power, and the packaging material of these leds is epoxy resin packaging.
(2) Use aluminum or aluminum alloy with good thermal conductivity, copper or copper alloy, and other alloys. Do waterproof, dust-proof, anti-aging, stainless steel bolt fastening, and then refer to the latest outdoor lighting technical specifications issued in China, as well as urban road lighting design standards.
(3) The facilities installed in the outdoor landscape lighting within 20m of the external wall of the building should be consistent with the grounding form of the indoor system, and the TT grounding form should be used when the distance is greater than 20m from the external wall of the building. In addition, outdoor lighting uses TN low-voltage power supply system, lighting control box (branch control point) layout principles need to consider the power supply radius and power to the end of the power point necessary to control the voltage drop, to avoid undervoltage caused by the lamp can not operate normally. In the “Code for Design of Power Supply and Distribution System” GB50052-98, it is stipulated that under normal operation, the allowable voltage deviation at the end of road lighting is + 5% and -10%.
Lighting selection
1. Outdoor places
(1) Street lights
Applicable places: highways, overpasses, parking lots, stadiums, freight yards, ports, airports and civic leisure plazas.
(2) Garden lights
Applicable places: urban slow lane, narrow lane, residential areas, tourist attractions, residential areas, parks, campuses, gardens, villas, botanical gardens, squares and other public places of outdoor lighting.
(3) Lawn lights
Application: Widely used in park scenic spots, noble communities, garden villas, square green space, tourist attractions, resorts, golf courses, enterprises and factories green space lighting, residential district green space lighting, commercial walking
(4) Landscape lights
Applicable places: lakeside, residential areas, tourist attractions, residential areas, parks, campuses, gardens, villas, botanical gardens, large squares, pedestrian streets and other public places.
5) Buried lights
Applicable places: square, restaurant, private villa, garden, meeting room, exhibition hall, community landscaping, stage bar, shopping mall, parking sculpture, tourist attractions and other places such as lighting decoration.
(6) Wall headlights
Application place: Generally placed in the community, park, or capital, very ornamental.
(8) Wall washing lamp
Application: It is mainly used for architectural decoration lighting, and used to outline the outline of large buildings.
2. Outdoor places
Indoor lighting fixtures mainly include overhead lights, chandeliers, wall lights, spotlights, and floor lights. The overhead lamp or chandelier is the main light source in the room, and other lamps are auxiliary light sources.
(1) According to the installation method, it can be generally divided into six kinds of embedded ceiling lights, barking ceiling lights, chandeliers, lamps, active lamps, and architectural lighting.
(2) According to the light source can be divided into incandescent lamps (compact fluorescent lamps fall into this category), fluorescent lamps, high-pressure gas discharge lamps and other three categories.
(3) According to the place of use can be divided into civil lights, building lights, industrial and mining lights, vehicle lights, Marine lights, stage lamps, etc.
(4) According to the light distribution cold can be divided into direct lighting type, semi-direct lighting type, full diffuse lighting type and indirect lighting type.
