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Light bulb with vacuum cleaner

12.07.2015

English inventor James Dyson is known for his newly invented household appliances - vacuum cleaners, air purifiers, electric towels. He is also known for loud statements about his inventions. Now his son Jake Dyson has taken up the baton and announced the creation of an LED light bulb that can last for 37 years.

The main problem with LEDs is their cooling. Even though LEDs produce significantly less heat than incandescent bulbs, heat causes the brightness to dim over time and the color to fade. Dyson Jr. came up with the idea of using heat pipes to cool LEDs, as in large computer systems and space technology. However, they are also used to cool high-power LED lights, so Dyson's invention refers to the miniaturization of heat removal from the bulb using an aluminum radiator.

Thus, according to the author, the temperature is maintained at a level of 55°C, at which the phosphor coating of the LED is maintained for 37 years under normal use (12 hours of continuous use per day).

A "Dyson bulb", or rather, the entire lamp, in which 8 LEDs are built in, costs about $600. At the same time, the guarantee covers 2 years of work, and it is not clear what will happen in, say, 15 years. Therefore, it makes sense for exotic lovers to pay attention to Cree light bulbs. They are also LED, but the problem of heat dissipation in them is solved with the help of ring ribs on the bulb right above the lamp base.

In addition, Cree's new generation of light bulbs use holes in the base and top of the bulb to allow heat to be transferred by convection. And such a light bulb costs only $8.

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ISSATA has added one more emergency power supply unit IS 200 EK-40 for LED lamps to its product line. The main difference between the new block and the already existing IS 200 EK-17 is the battery capacity and, accordingly, the duration of the lamp.

The new emergency power supply unit (EPU) is equipped with a nickel-cadmium battery with a capacity of 4000 mAh at a voltage of 7,2 V. This battery and the available operating modes (selected by a DIP switch) allow the luminaire to work in emergency mode for at least 180 minutes.

BAP IS 200 EK-40 has four sub-ranges of operation 0-12/12-24/24-94/94-120 V. The value of the output current 350/351-250/352-63/353-50 mA depends on the selected subrange. When choosing an operating mode, you should be guided by the fact that the output voltage of the unit is higher than the voltage drop across the LED string.

IS 200 devices are designed for luminaires installed in rooms where there is a requirement for continuous emergency lighting and it is not possible to provide this lighting from backup power lines.

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