On November 3, Nikkei BP reported that ROHM exhibited a bulb-type LED lighting fixture for E26 lamp heads at "Green Device 2009" (October 28-30, 2009, Yokohama Convention and Exhibition Center). 1). The LED lighting fixture is currently under development and is equipped with more than 50 of the company's mid-size LED packages "PSML2". The side is illuminated with two segments of LED packages arranged in a ring shape, while being illuminated directly below the LED package with a lid on the ring (Figure 2).    Most of the bulb-type LED illuminations are arranged on the plane of the LED package, and the light is diffused by the lens and the hemispherical lamp cover covering the lens. However, since the directivity of the LED light is strong, even if the illumination below is equal to that of the incandescent lamp, the light that is irradiated to the side and the back becomes weak. In order to obtain a large range of light distribution closer to incandescent lamps, ROHM has stereoscopically configured LEDs. Therefore, in addition to the downlight, it is also convenient for ball chandeliers and the like.    The luminaire has a diameter of 55 mm, a height of 110 mm and a weight of 120 g. There are three kinds of calender color (color temperature 7000K), 昼 white (same as 5400K) and bulb color (same as 2760K), and the illumination below is 52lx, 45lx and 37lx respectively. The light color consumes 7W and the brightness is the same as that of a 40W incandescent lamp. The price and sales methods have not been determined. The company's commentator stated that “the price will be compared with the competitive products and will be listed in 2009 as much as possibleâ€. Laptop Charger,Hp 45W Laptop Charger,Universal Laptop Charger,Laptop Ac To Dc Adapter Guang Er Zhong(Zhaoqing)Electronics Co., Ltd , https://www.geztransformer.com
Figure 1 LED bulb developed by ROHM
Figure 2 shows a wide range of light distribution through a three-dimensional configuration of the LED package.
