Sharp to Launch new LED Light Bulbs in Japan
Sharp Corp will release four types of LED light bulbs in Japan. They are two types of E17 small-size bulbs and two types of E26 spherical bulbs and come in two colors
The size of the power supply unit was reduced by using the companys original LED device.
The small-size LED light bulbs
The small-size bulbs are
This time, Sharp used an LED device made by mounting many LED chips on a substrate and forming distributing terminals on it. The company calls it Zenigata (coin-shaped) type. It announced the Zenigata-type device, which is as small as 12 x
The substrate is made with a ceramic material, which prevents age softening better than plastics, Sharp said. It has 40 LED chips. The company said that some of its LED lighting devices are equipped with its in-house LED chips.
Furthermore, Sharp reduced the substrate area of the power supply unit to about half that of its former model (DL-L40AN/AL). Though the company declined to comment on its details, it remodeled the power supply unit to eliminate an electrolytic capacitor. And it is possible to apply this technique to reduce the sizes of existing LED lighting device, the company said.
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