LED flood lights are strategically placed to provide high quality lighting for areas such as over-head highway sign lighting, architecture lighting, building facades, and other similar applications.
1, the building exterior lighting
An area of the building project, is that the head using the control beam angle and the square head shape Floodlights, which Floodlights with the traditional concept of exactly the same. However, the LED light source is small and thin, linear projection lamps projection lamps LED R & D will undoubtedly become a major attraction, as many buildings where there is no overhang for traditional projection lamp. It’s easy to install, can also be the standard vertical installation, better integration with the building surface, the lighting designer lighting brought new vocabulary, expanding the creative space. And historic buildings to modern architecture and impact of lighting techniques.
2, landscape lighting
LED light effect chart
Unlike traditional lighting because LED light sources are mostly glass bulb shell, it can be very good with the city street furniture combination. Leisure space in the city, such as paths, stairs, deck, waterfront, garden for lighting. For flowers or low shrubs, you can use the LED as a light source for lighting. LED Floodlights hidden style will be particularly popular. Fixed end plug can be designed according to the height of plant growth, to facilitate adjustment.
3, logo and instructions of the lighting
Need to limit and guide the establishment of space, such as the separation of road surface shows local staircase lighting, emergency exit lighting instructions, you can use the surface brightness of the appropriate LED lights from the light-emitting buried or embedded in the vertical wall lamps, such as theater audience hall on the ground to guide the side of the indicator lights or seats, and the boot floor shopping center lights. In addition, LED and neon compared to, because it is low, there is no fragile glass, will not bend to increase production costs, should promote the use of the logo design.
4, the interior display lighting
On lighting quality, because the LED light source does not heat, ultraviolet and infrared radiation, no damage to exhibits or merchandise, compared with traditional light sources, lamps do not need an additional filter device, lighting system is simple, inexpensive, easy to install. The precise distribution of light, fiber optic lighting can be used as a substitute for the museum. Metropolitan commercial use of colored lighting LED, white LED interior with decorative interior to provide auxiliary lighting for the interior, you can use the hidden light with LED, especially beneficial for low space.
5, the entertainment and stage lighting
Because LED’s dynamic, digital control color, brightness and dimming, lively color saturation can create static and dynamic lighting effects. The whole spectrum from white to any color, LED’s use of lighting in these spaces opened up a new way of thinking. Long life, high lumen maintenance value (10,000 hours of luminous flux maintained 90%), and PAR 50 lamps and metal halide compared to 250 hours of life, reduced maintenance costs and replacement of light frequency. In addition, LED overcome the metal halide lamp used for a time the phenomenon of color shift. Compared with PAR light, no heat radiation, can make the space more comfortable. Current LED color wall decorations in the restaurant building has become a common practice in the application.
6, the video screen
Full-color LED display is the world’s most spectacular outdoor large display device, the use of advanced digital video processing technology, has an unparalleled large area and high brightness. Depending on the indoor and outdoor environments, using a variety of light-emitting pixels, to achieve a different brightness, color, resolution, to meet a variety of purposes. It can dynamically display graphic animation information, the use of multimedia technology, can play all kinds of multimedia files. The world’s most influential LED display comes as the New York Stock Exchange, Times Square, Manhattan, for a total of 18,677,760 using only LED, an area of 10,736 square feet. Screen can be divided into multiple screens, but also showed that the Wall Street stock market at a glance presented before the public. Another rise in the Shanghai Pudong Lujiazui Financial Center headquarters in Aurora, the entire facade of the building toward Puxi bordered the large 100m long LED screen, a total area of 3,600 square meters. Rated in the world.
7, the vehicle lamp lighting
For electric vehicles. Motorcycle automobile lighting the lamp
Input anti-jamming performance switching power supply, because of the characteristics of its own circuit (Tandem), the general input disturbance, such as surge voltage is difficult to pass, the output voltage stability index of this technology compared with the linear power with more Big advantage, its output voltage up to (0.5 ~ 1)%. Switching power supply module as an integrated power electronic devices, in the selection should note the following:
The choice of output current
Due to high efficiency switching power supply, generally 80% or more, so in the choice of the output current should be accurately measured or calculated the maximum absorption current of electrical equipment to be used so that the switching power supply with high performance and low cost,usually
Output is calculated as:
Is = KIf
Where: Is-switching power supply rated output current;
If-electrical equipment, the maximum absorption current;
K-factor margin, generally of 1.5 to 1.8;
Switching power supply linear power supply will produce more than the interference, common mode interference on sensitive electrical equipment,grounding and shielding measures should be taken by ICE1000, EN61000, FCC and other EMC constraints, switching power supply electromagnetic compatibility EMC measures are taken,
Therefore, switching power supply should normally be with EMC EMC filter. Hua Fu techniques, such as HA Lead Series switching power supply, its FG terminals to chassis ground or take the user in order to meet the electromagnetic compatibility requirements.
In the design of switching power supply must have been current, overheating, short circuit protection, it should be the preferred protection in the design of switching power supply modules are available, and the technical parameters of its protection circuit with electrical equipment should match the operating characteristics,
To avoid damage to electrical equipment or switching power supply.
Choose how much amount of product, how the connections, the control system design, if not the AC product, to choose a good power system. This is a more complicated link.
A. First, determine the number of products to be LED, and the arrangement. Is best arranged by rendering exactly the same, which they have used the design effect.
B. If it is low voltage products, we will choose the power, we should pay attention to choose a power supply to the following aspects:
1. High reliability: in particular the drive power as the LED lamp, installed in the high altitude, convenient repair and maintenance cost is also large.
2. High Efficiency: LED energy-saving products, driving higher power efficiency. Installed in the fixture for the power structure, is particularly important. Because the LED luminous efficiency with LED temperature decreased, so the LED’s heat is very important. Power efficiency High rate of depletion of its small power, heat in the fixture on the small temperature rise will reduce the lamp. LED light on the slow decline favorable.
3. High Power Factor: Power factor is the power to the load requirements. 70 watts under normal use of electrical appliances, there is no mandatory targets. Although power is not a single factor with a lower electrical power has little effect on the power grid, but at night we light lamps, similar The load is too concentrated, would produce power more contaminated. 30 watts to 40 watts for the LED drive power, it is said in the near future, perhaps there would be power factor requirements of certain indicators.
4. Driving mode: now prevailing in two ways: one is a constant voltage constant current source for multiple sources, each current source separately to each channel LED power supply. In this way, the combination of flexibility, all the way LED failure does not affect the LED’s work, but the cost will be slightly higher Point. The other is a direct constant current power supply, LED series or parallel operation. It has the advantage of lower cost, but flexibility is poor, but also to resolve a fault LED, LED operation does not affect other issues. These two forms coexist in a period of time. Multi-channel constant current output power supply, cost and performance will be better. Perhaps the mainstream of the future
5. Surge Protection: LED Surge capacity is relatively poor, especially the anti-reverse voltage capability. Enhance this protection is also very important. Some LED lights installed in the outdoors, such as LED lights. Since the start grid load rejection and lightning sensors, from the grid The system will invade a variety of surge, the surge can cause some damage to LED. LED drive power should therefore inhibit the surge of the invasion to protect the LED from damage ability.
6. Protection: the protection of power in addition to conventional features, the best increase in the constant current output LED temperature feedback, to prevent the LED temperature is too high.
7. Protection: the lighting and outdoor installation type, the power structure should be waterproof, moisture, shells and Fast.
8. Drive power of power: the power of the power of our choice when we must remember to stay in power margin can not be overloaded. I am here to give you an empirical formula: power = LED lighting power supply power ⅹ 1.2
9. To comply with safety regulations and electromagnetic compatibility requirements.
LED power supply selection is very important to determine whether normal and stable throughout the project work. Therefore, there must be careful in the choice.
Modern lighting has become a light culture in the field of LED lighting to provide consumers with high-quality lighting products will also provide total lighting solutions for first place, has become a trend. Therefore, the selected lamps should focus on the macro choose reputable manufacturers, brand good products.
You can pass some specific parameters to determine the pros and cons of LED lighting products:
First: beautiful. With LED lighting, for example, the current common LED spotlights are in multiple points of light, its very different appearance and traditional lighting, installed in high places is very coordinated, pole into a second-generation LED lighting has an international patent Focus Reflection optical system not only has the same appearance with the traditional lighting of reflective glass and has a light focus and glare of the desired effect;
Second: color temperature (color) must be consistent, but also to stable, long-point temperature will not change color. The color temperature is the traditional halogen lamp 2700K, LED products now have some role in the market after a period of very easy to change color, and color temperature deviation is very powerful.
Third: The color rendering index CRI (Ra) will directly determine whether truly reflect the real color. The sun and the traditional halogen lamp color rendering index CRI (Ra) is 100, national standard LED lamps CRI (Ra) ≥ 80, now, LED lighting industry, CRI (Ra) largely reached 75. Some of the better manufacturers, color rendering index CRI (Ra) can reach 85 or more. If it is used in some of the more high-end establishments such as hotels, upscale stores such as lighting, color rendering index certainly is very high, as much as possible with the traditional incandescent close, so shine on the physical object can be accurately display the original color;
Fourth: the life. Now use the state lumen maintenance after 25,000 hours in more than 70%;
Fifth: the angle of light is better, can not produce glare, such as 20 ° angle, light shines down inside this range will be. In the light irradiation angle is outside can not see a strong light;
Sixth: It should be selected according to different application environments with different styles of lamps, in order to achieve the interior architectural design and lighting design and effective integration.