What are the factors that affect the life of LED lamps and how to effectively improve the heat dissipation effect of LED lamps?
LED lamps are a very popular type of lighting products. They are not only environmentally friendly and energy-saving, but also have a long service life. Therefore, they have been loved by people since they came out. Of course, some factors also affect the service life of LED lamps. What are the factors that affect the life of LED lamps? How to effectively improve the heat dissipation effect of LED lighting fixtures? Let's follow BENWEI LIGHTING to find out.
What are the factors that affect the life of LED lamps:
1. The quality of the die is the primary condition that determines the life of the LED:
In the LED manufacturing process, other impurity ion pollution, lattice defects and other technological processes will affect its life, so the use of high-quality LED die is the first condition.
2. Whether the post-process packaging is reasonable will affect the life of the LED:
Whether the post-process packaging of LEDs is reasonable will affect the life of LEDs. At present, several major companies in the world such as Cree, Lumilends, Nichia and other higher-level LED packages have patent protection. These companies have relatively high levels of post-process packaging requirements. The life of the LED is also guaranteed, but most companies have more imitations of the post-process packaging of the LED, which is okay from the appearance, but the process structure and process quality are poor, which seriously affects the life of the LED.
3. Lamp design is a key issue that affects the life of LED lamps:
Reasonable luminaire design is not only meeting other indicators of luminaires, a key issue is to dissipate the heat generated when the LED is lit. When using high-quality LED original products from companies such as Cree on different luminaires, the LED lifespan can be several times different. Even dozens of times. For example, the integrated light source lamps on the market (single 30W, 50W, 100W), the light source of these products and the heat dissipation channel contact part of the heat is not smooth, resulting in some products 1-3 months after lighting The light attenuation is more than 50%. Some products use a low power tube of about 0.07W, because there is no reasonable heat dissipation mechanism, the light attenuation is very fast. These products have low technical content, low cost, and short life.
4. Lamp power supply is very important to the life of LED:
Whether the power supply of the lamp is reasonable will also affect its life, because LED is a current drive device, if the power supply current fluctuates greatly, or the frequency of power spikes is high, it will affect the life of the LED light source. The life of the power supply itself mainly depends on the power supply design. Whether it is reasonable or not, on the premise of reasonable power supply design, the life of the power supply depends on the life of the components.
LED lamps
The above is a brief introduction about the factors that affect the life of LED lamps. As mentioned above, the heat dissipation of LED lighting also affects its service life. Therefore, in the process of producing lamps, it is generally possible to improve the period of heat dissipation as much as possible. In order to ensure the service life of LED lighting fixtures, how to effectively improve the heat dissipation effect of LED lighting fixtures? Let's take a look at the following introduction:
How to effectively improve the heat dissipation effect of LED lighting fixtures:
1. Consider from the design of LED chips:
With the development of technology, we can adopt more advanced processes to further reduce the output power consumption, adopt a more reasonable heat dissipation structure, improve the junction temperature and heat resistance of the LED chip, reduce the heat dissipation requirements while reducing the heat generated, and increase Electric energy conversion rate.
2. Reduce the temperature rise:
In the choice of materials, try to choose heat dissipation materials with outstanding thermal conductivity. In the design, try to be reasonable, reduce the heat dissipation path, adopt better ventilation channels, reduce the heating value to less than 30 degrees Celsius, and the modular lamps generate huge heat , How to improve its heat dissipation efficiency is a key research direction.
3. Research experience on packaging structure and packaging process:
Choose a new type of thermal conductivity material, such as metal bonding materials, fluorescent powder mixed plastic lamps, effectively reduce the thermal resistance of the LED device, the thermal resistance value is reduced to 10 degrees Celsius or lower.
4. While rationalizing the heat dissipation structure, consideration should be given to reducing heat dissipation costs:
Do not put the cart before the horse and spend a lot of money to design a heat dissipation structure, the cost is too high, the product is cost-effective, and it is not practical. Only when the cost is controlled on a reasonable basis and the heat dissipation performance is the best, such a product can be accepted by the market.
