Three core technologies of LED panel lights
The optical function of the LED panel light mainly involves the functional requirements of luminosity, spectrum and chromaticity. According to the new industry standard "Semiconductor Light Emitting Diode Test Method", there are mainly luminous peak wavelength, spectral radiation bandwidth, axial luminous intensity angle, luminous flux, radiant flux, luminous power, chromaticity coordinates, relevant color temperature, color purity and dominant wavelength, parameters such as color rendering index. For white LEDs commonly used in LED panel lights, color temperature, color rendering index and illuminance are particularly important. It is an important goal of lighting atmosphere and effect, while color purity and dominant wavelength are usually not required.
The mainstream practice in the LED industry is that after packaging LED chips to form a light source or a light source module, the light distribution is carried out when the lamps are made. This is the original traditional light source method, because the traditional light source emits 360° light. If you want to guide the light to the end of use, Philips' traditional lamps are now the best, and the light loss is also up to 40%. However, the optical parameters of lamps used by many domestic LED downstream manufacturers are originally the optical parameters of the chip or the light source, not the optical target parameters of the entire lamp.
How to improve the function of light very well? The new global technology is to do light distribution on the chip package, export the light of the chip at one time, and insist on a large light output, so the light loss rate is only 5%-10%. With the continuous improvement of skills, the light loss rate will be lower and lower, and the light efficiency of the light source will be higher and higher. The same lamp with such a light source does not need to be light distribution, and the relative power of the lamp will be greatly improved, making it more widely used in functional lighting, forming a large-scale shopping mall. Therefore, a good LED supplier is our urgent need. We don’t need to spend a lot of money to study how our LEDs are distributed, and we don’t need to spend a lot of time and experience for engineers to use software simulation. The simple method is It is to let LED white light suppliers to cooperate. You know, if our engineers use software to simulate, the necessary actions are input and output. The input is the import of data in the early stage, and the output is the result of the simulation, so the data in the early stage of the request must be accurate and the simulation of the back-end can be accurate.
Thermal Properties (Construction):
The luminous power and power supply of LEDs for lighting are one of the key points of the LED industry. At the same time, the PN junction temperature of the LED and the heat dissipation of the casing are particularly important. The greater the difference between the PN junction temperature and the lamp body temperature, the greater the thermal resistance, and then the light energy is converted into heat energy and consumed in vain, which will lead to LED damage in severe cases. A good structural engineer not only needs to consider the structure of the lamp and the thermal resistance of the LED, but also whether the shape of the lamp is reasonable, fashionable and novel, and of course reliability, maintainability and practicability. Consider from the user's point of view, and consider the product from the user's point of view.
The most common technology today is to use aluminum substrates for packaging. There are technical bottlenecks in the heat dissipation and optical conversion power of aluminum substrates, which cannot effectively control the junction temperature and stably maintain high-power light output. The higher it is, the larger the required area of the aluminum substrate will be, which will increase the cost and use volume, which is extremely inconvenient. So how to get out of this misunderstanding and find a new way is the new skill center feature. Under the premise of maintaining low cost and passive heat dissipation, the use of high thermal conductivity medium, through the new overall structure of equipment/lamps, reduces thermal resistance and junction temperature of PN junction, so that PN junction operates within the allowable operating temperature and maintains a large number of photon output , and its few requests are as follows:
(1) Ultra-low thermal resistance material, overall structural technology for rapid heat dissipation;
(2) High thermal conductivity and anti-UV packaging skills;
(3) Use low environmental stress construction skills;
(4) Overall thermal resistance < 20K/W, junction temperature < 80 degrees;
(5) The operating temperature of the LED light source lighting module should be controlled below 65°C.
Electrical properties (electronics):
If a lighting fixture is likened to a girl, then the light distribution is her inner body, the structure is her appearance, and the electron is her heart. A person has no life without a heart, and a lamp cannot be a power source without electronics. A good driving power supply can also determine the life of a product. The electronic specifications and parameters are often much more complex than the structure, and the early development energy investment is also relatively large. The current trend and update of skills are changing every day, and engineers have to spend a lot of energy to learn, absorb, differentiate, and use new skills. The pre-planning of electronic planning is implemented in the mid-term, and the entire process of forming in the later stage needs to form documents and data, which is also a tedious work in planning. For example: a preliminary plan in a power supply planning, product introduction, specification basis, safety standard basis, electrical performance expectations, technical requirements, raw material evaluation, testing methods, etc., all constitute system documents.
Shenzhen Benwei Lighting Technology Co., Ltd is a professional manufacturer in producing LED lighting products, Our main products T8 T5 LED Tube, LED Grow Light,Poultry LED Light,Tri-proof LED Light,LED Flood Light, LED Panel, LED Stadium Light, LED High Bay, LED Strip light, If you want to purchase a high-quality LED lighting products or have a more in-depth understanding of the application of LED lighting, please contact send us inquiry.
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