How useful are LED lights for interior decoration materials in terms of decoration?

Theme: Opening up a new world of LED decoration-color wall screen

LED (Light Emitting Diode) is a semiconductor that can convert electrical energy into visible light. Because of its easy control, low voltage With the advantages of DC drive, rich color performance and long service life after combination, it is widely used in urban lighting projects and large-screen display systems. The color wall screen is used as an indoor display curtain wall in a bar and dance hall. It is novel, environmentally friendly, and has colorful changes, which embodies the characteristics of a high-grade DISCO bar. Keywords: color wall screen, display curtain wall, display unit

With the rapid development of LED technology, the application fields are becoming wider and wider, from early traffic lights, advertising display boards, car taillights to today's spherical Lamps, guardrail lights, underground lights, floor tile lights, garden lights, etc. have developed from the field of indication and display to the field of landscape decorative lighting. In the future, they will also launch an impact on the field of general lighting sources to replace white light lamps and fluorescent lamps and become the 21st The pride of the green lighting era of the century. Due to the characteristics of LED such as energy saving, environmental protection, safety, long life, maintenance-free, and multiple changes, it has become highly respected in the field of outdoor urban landscape decorative lighting. According to the needs of the market, Woko Semiconductor Lighting Company has expanded the use of LED in the field of landscape decorative lighting. The application has been further pushed from outdoor to indoor, and its representative product is color wall screen.

Color wall screen, a display unit composed of multiple LED light-emitting diodes, can produce a variety of colors and light and dark combinations through programming of the power supply and control parts, which can fully satisfy some entertainment and Requirements for places with special lighting effects, such as high-end DISCO bars, dance halls, etc. The emergence of color wall screens has been well received by customers and has been used more and more, opening up a new world of LED indoor landscape decoration.

1. Develop LED indoor landscape

1.1 Technical background

The color wall screen to be studied in this article has been successfully applied in the Jade Pearl Ballroom of Shenzhen Xindu Hotel The wall of the bar forms a refreshing and visually stunning indoor display wall. The actual application effect of this project has met the customer's requirements - novel, environmentally friendly, colorful, and reflecting the characteristics of a high-grade DISCO bar. The color wall screen solution is based on the application and control technology of light-emitting diodes (LEDs), precisely because LEDs have incomparable advantages over other light sources. LED (Light-Emitting-Diode) is a semiconductor that can convert electrical energy into visible light. Its characteristics are as follows:

① High efficiency: According to the usual definition of light efficiency, the luminous efficiency of LED is not high (generally 10-30lm/W. Currently, the orange-red LED with the highest light efficiency is known to have a light efficiency of Reaching 55lm/W), but since the LED spectrum is almost entirely concentrated in the visible light band, the efficiency can reach 80-90, while the visible light efficiency of incandescent lamps with similar light efficiency is only 10-20.

②High light quality: Since there are no ultraviolet and infrared rays in the spectrum, there is no heat and no radiation. LED is a typical green lighting source.

③Pure light color: Unlike the full-band spectrum of incandescent lamps, the typical LED spectrum is narrow and the light emitted is very pure.

④ Low energy consumption: The power of a single LED is generally 0.05-1W. Through clustering, it can be tailored to meet different needs with little waste. Especially when colored light is needed, using white light through color filtering is a lot of trouble and a waste of energy, but the inherent color of LED is unique.

⑤Long life: the nominal life is 100,000 hours when the luminous flux attenuates to 70%. Practically almost unlimited.

⑥Reliable and durable: There are no tungsten wires, glass bulbs and other easily damaged parts, the possibility of abnormal scrapping is very small, and the maintenance cost is extremely low.

⑦Flexible application: small in size, it can be flat-sealed and easily developed into light, thin and short products, and can be made into various specific application products in the form of points, lines, and surfaces.

⑧Safety: The working voltage of the single unit is roughly between 1.5V~5V, and the working current is between 20mA~70mA.

⑨Short response time: suitable for frequent switching and high-frequency operation situations. ^

⑩Green and environmentally friendly: waste can be recycled, no pollution; unlike fluorescent lamps that contain mercury.

Flexible control: the light can be dimmed by adjusting the current, the combination of different light colors can be adjusted, and the timing control circuit can achieve a variety of dynamic changes.

The above advantages make LED considered as an ideal green light source, which has been increasingly and successfully used in the fields of engineering lighting and display. The application of semiconductor technology in urban nightscape lighting projects and interior decoration lighting and display projects gives people a new feeling: for example, it is better than traditional neon lights in terms of color performance, light control capabilities, environmental protection and energy saving, etc. , incandescent lamps, tungsten halogen lamps, etc. have advantages. The indoor color display curtain wall project of the DISCO bar in the Jade Pearl Ballroom of Shenzhen Xindu Hotel combines the application of LED lighting technology and display technology, using "bulb" pixel combinations to construct a dynamic and ever-changing display wall. K$ujODT^

1.2 The main problems to be solved by this design

At present, there are many kinds of lighting and control systems in DISCO bars. If you want to construct a shocking For a full-color display wall as the environmental background, LED is the first light source to choose, instead of traditional thermal radiation light sources and gas discharge light sources that consume a lot of power, are difficult to control, have a short service life, and have a slightly poor system safety factor. The requirements put forward by the customers of Jade Pearl are: a new environmental background design, environmental protection, bright colors, reflecting the characteristics of a high-grade DISCO bar, and the control scheme adopts computer synchronization control - these requirements are the main problems solved by this design. Then, based on the analysis of the bar site, and comprehensive consideration of the actual operating environment, construction conditions and customer requirements on site, a set of optimized technical solutions were tailored, that is, through overall point-by-point control, cascade data transmission, and real-time system response, we achieved Unified control of the LED lighting inside the bar to adjust the corresponding color tone (such as displaying simple changing pictures) and atmosphere effects

2. Design plan

2.1 Overall design idea

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The scope of this type of color display curtain wall applied in bars is ultimately lighting display engineering, involving optics, electricity, control, machinery, materials, art and other multi-disciplinary technologies; lighting display design is based on lighting. A comprehensive art of means, lighting display design is the foundation of lighting display engineering. For lighting display projects that are closely related to people's lives, the design idea we follow is: on the basis of reasonable investment and on the premise of ensuring the lighting (or display) function, adopt or design lighting display products suitable for the architectural environment, and strive to create Comfortable visual effects and a visual environment consistent with the environment; in addition to meeting the necessary illumination requirements and basic requirements for brightness distribution, more attention must be paid to the coordination of environmental styles, electrical safety, convenience of use and maintenance, etc. The reference basis for the design is SJ/T11141-2003 "General Specifications for LED Displays" and SJ/T11281-2003 "Test Methods for LED Displays".

The lighting design of the bar is a relatively complex issue, and the color display curtain wall, as one of its components, that is, the main body of the environmental background, is crucial. The dance floor of the Jade Pearl Bar can be used as a communication place for disco (dance) and ballroom dance (slow dance). This requires that the main body of the environment is colorful and varied, and can change with the music, songs, melody, and rhythm. . On the basis of fully considering the application environment and flexible design ideas, an overall design plan is initially drawn up, and then designed step by step, as detailed below in this chapter.

2.2 Formulating the overall design plan

Based on the site environment, installation conditions and customer requirements, as well as a comprehensive analysis of various light sources, LED is selected as the light source.

There are many options for the composition of the display curtain wall, such as color tubes, light bulbs, wall tile lights and various similar deformed structural units, but the technical principles are the same. Considering that it is decorated on the wall inside the bar, the square light-emitting unit gives people the first impression of being more stable, shocking, and straightforward. The round light-emitting unit is actually also a very good one, and the former is adopted here.

The technical solution adopted by this design to solve its technical requirements (problems) is to construct a square luminous body or called a luminous (display) unit. The luminous (display) unit is composed of several LEDs. That is, in a square milky white PC protective cover, a circuit board with several LEDs welded is installed. Such square "light bulb" pixel units are arranged in a certain matrix and fixed on the fireproof wooden board through positioning snap rings, screws, etc. The fireproof wooden board is installed on the wall to form a square light bulb color display curtain wall, plus Connecting to a video controller or computer forms a color wall display system with a simple structure. The entire color wall screen display system can achieve unified control of the LED lighting inside the bar through overall point-by-point control, cascade data transmission, and real-time system response, and adjust the corresponding color tone (such as displaying simple changing pictures) and atmosphere. Effect.

2.3 Unit module design

We call the smallest light-emitting unit controlled by the computer a light-emitting (display) pixel, and will be specially designed around the light-emitting (display) pixel. Independent components are called unit modules. The light-emitting (display) pixel is composed of several red, green, and blue light-emitting diodes LED. The number of red, green, and blue LEDs will be mainly determined according to the basic requirements and control requirements of environmental illumination and brightness distribution. This design uses 11 LEDs. The red, green and blue LEDs are distributed in a ratio of 4:4:3, that is, there are 4 red LEDs, 4 green LEDs and 3 blue LEDs in one luminous pixel. Brief description: for 4R4G3B.

2.3.1 LED parameters u5

Preliminarily determined LED parameters.

2.3.2 Light-emitting unit parameters

The light-emitting unit (module) consists of a circuit board PCB welded with 4R4G3B and drive circuit, a high-strength PC mask, a ring card, a number of screws, etc. . The appearance of the light-emitting unit is square, that is, the effective shape of the entire module is 55x55mm. The reference prototype of the design is an LED spherical light bulb, so we define the name of the light-emitting unit (module) as an LED square light bulb. The pixel pitch of the Jade Pearl color wall screen is 160mm.

2.4 System design parameters

Specific system design

2.5 Brief description of structural design

Structural design is relatively easy, mainly for PC If the mask is designed to be square, corresponding square mounting holes must be processed on the wooden board. The processing technology of square holes is more complicated than that of circular holes, which makes the processing of the wooden board difficult, which is a disadvantage. Install and fix the PC cover component of the PCB board, that is, the square light bulb, through the thick wooden board with a black fireproof board, and use a metal ring card on the front to fix it on the wooden board through screws. As for how to install and fix the wooden board on the wall, it depends on the specific location. Depending on the situation, measures can be taken on site to drill holes for installation. The wiring between the pixels of the light bulb must be concealed and safe in design.

3. Effect

As a kind of LED electronic display, color wall screen combines lighting decoration and color changes. Because of its special purpose and low price, it has been applied Into the lighting system of the bar and dance hall, it has achieved a good background setting effect and enriched the lighting expression of the bar; the advanced visual shock effect it brings has added to the attraction and class of the bar DISCO dance hall. The color wall screen takes advanced video display technology as its core, uses ultra-high brightness LED electroluminescent materials as display devices, and is equipped with an audio and video system, which can play simple patterns simultaneously with audio and video.