360-degree LED filament bulb

Tungsten incandescent lamps will be canceled, many people have nostalgia for more than 100 years of incandescent lamps, LED lighting will eventually replace tungsten incandescent lamps, which is the inevitable trend of the development of modern science and technology. Today, LED lighting is energy-efficient, energy-efficient, pollution-free, and environmentally friendly. However, due to the high production costs of LED lighting, the current retail price of LED lighting is still difficult to make LED lighting into millions of households; the current use of low-voltage LED lamp beads as the LED lighting cooling bottleneck has not yet been resolved Program. Only by relying on the system technology revolution and technological innovation of LED lighting can there be breakthroughs in order to create a new generation of more reasonable and cost-effective LED lighting fixtures that can be enjoyed by the general public.

Many people hope that LED lights can be made as light as tungsten incandescent bulbs, 360? Full light. This is difficult to achieve in the current LED lighting fixtures with low-voltage LED lamp beads. Reforming the shape of LED lamp beads and carrying out innovative designs is the road to hope.

LED light source package innovation <br> <br> LED light source packaging technology innovation LED lighting design is the key to the newborn. Most current LED lamps use low voltage LED beads (LVLED) with low operating voltage (VF=3.2V) and large current (IF=200-700mA). When the LED lamp beads work, only 30% of the electrical energy is converted into light energy, and 70% of the electrical energy is converted into thermal energy. Therefore, if the heat dissipation of the LED lamp is not good, a large amount of heat is accumulated so that the lamp cavity is always in a high temperature environment, and the constant current power supply is switched. The electrolytic solution in the electrolytic capacitor will be depleted due to high temperature, resulting in failure; LED lamp beads prematurely decay due to long-term high temperature environment.

The birth of HVLED (high voltage LED) lamp beads technology has brought new vitality, new ideas, and new design ideas to indoor LED lighting fixtures. This will lead to many new ideas and new lighting fixtures for LED lighting. The HVLED's biggest feature is high voltage (VF = 50-280VDC), low current (IF = 20-60mA), compared with the same power LVLED lamp, its heat is much lower. HVLED is a module that connects N low-voltage LED dies in series to a high voltage, and its application is also very convenient.

The packaging of LED dies varies from single-core packages to N-die packages, such as COBs, COFs, etc., and from low-voltage LED modules with multiple strings and multiple low voltages to multi-string, multi-core packaged HVLED modules. LED light source packaging technology is constantly innovating.

From the perspective of application technology, COB LED light source board, its center LED die still have difficulties in heat conduction, poor heat dissipation problems, LED heat will gather in the center of the COB, therefore, this LED lamp has been used for a long time, the center The LED die first light fades. The multi-core packaged HVLED can use N uniformly distributed technology on the same power lamp board. The heat of each HVLED is quickly distributed by the aluminum substrate. The HVLED works under a small current, and the heat itself is much lower. The heat dissipation conditions of these two kinds of LED lamp bead board are as shown in FIG. 1 .