Panasonic has released eight LED bulbs, which are ordinary bulb-type products installed in the E26-type lamp socket and small bulb-type products installed in the E17-type lamp socket. It is scheduled to go on sale from October 21, 2009. Ordinary bulb-type LED bulbs include models with vertical illumination equivalent to 40W and 60W incandescent lamps, and models with vertical illumination equivalent to 60W incandescent lamps are available in two models that support and do not support dimmers. In terms of power consumption, the product equivalent to a 40W incandescent lamp is 4W, the dimmer is not supported, the equivalent of a 60W incandescent lamp is 6.9W, and the product supporting the dimmer is 7.6W.
The vertical illumination of a small bulb LED bulb is equivalent to a 40W incandescent lamp and consumes 5.5W. Only products that support dimmers. The small bulb type LED bulb is 72mm long and has a maximum outer diameter of 40mm, which is slightly larger than the Mini Krypton bulb (length 67mm, outer diameter 35mm). It is the first time in the industry to market LED bulbs that can replace small xenon bulbs. All models are available in two colors: bulb color (color temperature 2800 ° C) and daylight color (color temperature 6700 ° C). The price is open, regardless of the model, the products that do not support the dimmer are assumed to be around 4,000 yen, and the products that support the dimmer are assumed to be around 5,000 yen.
Remove the heat sink and take care of both heat dissipation and weight reduction
The overall efficiency of a conventional bulb-type LED bulb is 82.6 lm/W for a daylight color product equivalent to a 60 W incandescent lamp, and 85 lm/W for a daylight color product equivalent to a 40 W incandescent lamp, "achieving the highest energy-saving performance in the industry" (this the company). In order to improve the luminous efficiency, Panasonic has improved its heat dissipation structure.
The specific measures are as follows. In order to suppress the thermal resistance between the LED package and the bulb, in addition to the package bottom plate and the Al (aluminum) bulb are closely attached, an alumite treatment is also performed on the surface of the bulb to improve heat dissipation. By performing the alumite treatment, the emissivity is increased by about 4 to 5 times.
Other companies competing for the bulbs of the product to provide more heat dissipation for the heat dissipation, while the Panasonic LED bulbs have a smooth surface. “When the light bulb is placed in the lighting fixture, it is impossible to expect an air-cooling effect by natural convection, so we chose alumite treatment compared to the heat sinking sheet,†the company commentator proudly said.
No heat dissipation is provided. The structure of the sheet helps to reduce weight. Since the cylindrical portion of the bulb is formed by press working, the thickness is as thin as 0.4 mm, and the weight of the ordinary bulb type LED bulb is 100 g and the small bulb type LED bulb is 50 g. Compared with competitive products weighing about 140g, ordinary bulb-type LED bulbs are about 30% lighter. The LED chip is produced synthetically by Toyota, Japan, and uses a multi-chip single-package structure. The number of chips and so on has not been announced. The sales target for 2009 is 400,000.
LED bulbs released by Panasonic. The photo is an ordinary bulb product
8 products. From the left, they are ordinary bulb-type products that support dimmers, equivalent to 60W incandescent lamps, and do not support dimmers, ordinary bulb-type products equivalent to 60W incandescent lamps, ordinary bulb-type products equivalent to 40W incandescent lamps, and small bulbs. Product. The upper row is daylight and the bottom row is bulb color.
Improvement measures to improve heat dissipation
(Edit: Sandwich)
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