15

2022

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08

LED dimmer: How to better heat dissipation for machine tool LED work lights?

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LED Dimmer: How to Better Heat Dissipation for Machine Tool LED Work Lights?

 

The LED bulb in the machine tool working lamp is the original single-chip LED with low power, limited heat generation and less heating problems, so its packaging method is relatively simple. Then the LED dimmer: How can the machine tool LED working lamp better dissipate heat?

 

LED Dimmer: How to Better Heat Dissipation for Machine Tool LED Work Lights?

 

With the continuous breakthrough of LED material technology in recent years, LED packaging technology has also changed, from the early development of single-chip packaging to flat large-area multi-chip packaging module. Its working current ranges from the early low-power LED of about 20mA to the current high-power LED of about 1/3 to 1A, and the input power of a single LED is as high as 1W or more. Such high-power LED lamp beads, installed in a small lamp cup, there are several lamp beads, in the case of continuous condensation of heat, can be used for a long time. If the heat cannot be dissipated, it will affect the normal use of the lamp. At present, for the heat dissipation of high-power LED machine tool work lights, we generally use three solutions:

 

1. Increase the internal volume of the lamp cup as much as possible. If the size of the lamp cup is small, minimize the number of lamp beads:

 

2. Open the cooling hole outside the lamp cup. Of course, such lamps should be used in the absence of waterproof processing sites:

 

3. The heat sink of the lamp is used to transfer the heat of the product through the heat sink. Of course, all these solutions have some shortcomings. At present, the technicians of our factory are still studying, hoping to have a more complete solution to this heat dissipation problem., Extend the service life of machine tool work lights.

 

LED dimmer: Is LED the same as ordinary fluorescent lamp?

 

1. The machine tool work light is a semiconductor diode that can convert electrical energy into light energy. Light-emitting diodes, like ordinary diodes, are composed of PN junctions and are also unidirectional. When a DC voltage is applied to the LED, holes injected from the P region into the N region and electrons injected from the N region into the P region recombine with electrons in the N region and the P region within a few micrometers of the vicinity of the PN junction, respectively, resulting in spontaneous emission of fluorescence. The energy states of electrons and holes are different in different semiconductor materials. When electrons and holes recombine, the energy released is somewhat different. The more energy released, the shorter the wavelength of the emitted light. Typically, diodes emitting red, green or yellow light are used. The reverse breakdown voltage of the LED is greater than 5 volts. The forward volt-ampere characteristic curve of LED cabinet lights is very steep, and a current limiting resistor must be connected in series to control the current through the diode.

 

2.LED cabinet lights are characterized by high quality, durability, energy saving, and large projection angle adjustment range. The brightness of 15W is equivalent to that of ordinary 40W fluorescent lamps. High temperature resistance, moisture-proof, waterproof, anti-leakage. Use voltage: 110V and 220V, the cover can be made of glass or PC, and the lamp holder is the same as ordinary fluorescent lamp. With the deepening of scientific research on lighting, the relationship between light and health is more and more discovered by human beings. For example, lighting has been extended to the field of non-visual biological effects, the non-visual effects of LED cabinet lights on the human eye and the light perceived by retinal ganglion cells will affect melatonin release, sleep and night biological rhythms.

 

3. All these indicate a bright future for the health industry. Today's lighting market, from the perspective of environmental protection and energy-saving products, has become saturated, but from the perspective of health, the market is a blue ocean. Nobel laureate Shuji Nakamura delivered a speech at Fudan University, pointing out that LED products are harmful to blue light and may even cause diseases. However, this problem exists in most popular products, including government buildings, banks and even hospitals, schools and families, so it is health-oriented, the market will reshuffle and force again.

 

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