LEDisong LED Bulb Clear Review

General Information

ID	#239
SKU	EBUC-E27
Series	LEDisong
Manufacturer	Ecopoint (other LEDs from Ecopoint)
Fitting Type	E27 (other E27 LEDs)
Light Type	Globe
Height	112mm
Width	58mm
Weight	39g
Warranty	3 Years
Test Date	2014-01-06
Review Notes	The most efficient bulb tested here to date. Over 100 Lumens / Watt! Claimed replacement for 75W incandescent, however 75W is typically ~1100 lm (see incandescent equivalency chart here), considerably more than manufacturer's 700 lm specification. LED filaments give it a very similar appearance to a classic incandescent bulb, when both on and off (see gallery for illuminated bulb). CRI value is also above average. Incandescent-like glass housing makes bulb considerably more fragile than most other LED lights. We suspect internal filament temperature is significantly hotter than the glass globe temperature, but there is no easy way to check.
Price	$41.60 (AUD) from shop.ecopoint.co.nz on 5th of January 2014

Rating

LED Specifications

	Claimed	Measured	Compared To
Watts	6.5W	5.6W @ 239V	64.7W @ 246V
Yearly Running Cost^[?]	$1.42	$1.23	$14.17
Lumens	700 lm	608 lm	811 lm
Efficiency^[?]	108 lm/W	109 lm/W	13 lm/W
Lumens/Purchase Price	17 lm/$	15 lm/$	406 lm/$
Power Factor^[?]	N/A	0.71	1
Color ^[?]	Warm White, 3000K	Warm White, 2847K	Warm White, 2711K
Angle^[?]	Omni-Directional	287°	Omni-Directional
Dimmable	Not Dimmable	N/A	Yes, Trailing Edge
CRI (Color Accuracy)^[?]	90	91
Life	50,000 hours	Not Measured	1,000 hours
Min/Max Voltage	N/A / 240V		240V / 240V
Min/Max Temperature	N/A / N/A		N/A
Measured Temperature		48°C @ 25°C ambient 118°F @ 77°F ambient	158°C @ 25°C ambient 316°F @ 77°F ambient
Flicker Percent^[?]		1%	11%
Flicker Index^[?]		0.002	0.034

Link to manufacturer specifications at time of testing

Distribution Graph

Angle: 287° (±143.5° from bottom), Maximum lux:

Graph notes: Shows the intensity of the light when viewed from different angles. Normal omni-directional globes have a fairly constant output all the way around (excepting directly above). Downlights have a narrow range at the bottom in which the light is emmited, this determines their angle.

Spectrum Graph

Graph notes: Shows the breakdown of the LED light into its component colors. With short wavelength ultraviolet on the left and long wavelength infrared on the right. The green line represents the relative absolute strength of the light at each frequency, while the red line represents what the typical human eye would see. The human eye is most sensitive to green light, but much less sensitive to purples and deep reds.

Flicker Graph

Percent: 1%, Index: 0.002 (lower is better in both cases)

Graph notes: Shows variation in light output over 1/10^th of a second, with relative light output on the Y axis and time on the X Axis. Measured with a photodiode connected to an Oscilloscope. Ideally the yellow line should be flat. Low frequency high amplitude waveforms mean there is a possibility of noticeable flicker, but sensitivity to flicker varies between people. [More details about LED flicker]

LEDs in this Series

Name	Price	Watts	Lumens	Efficiency	Color	Angle	Fitting
LEDisong LED Bulb Clear	$42 (AUD)	5.6W	608lm	108lm/W	Warm White, 2847K	287°	E27
LEDisong LED Bulb Frosted	$42 (AUD)	6.4W	561lm	100lm/W	Warm White, 2722K	N/A	B22

Disclaimer: While every effort has been made to ensure the accuracy of these results, each measurement carries an inherent degree of uncertainty and error. Safety and EMC compliance of products to regional or international standards have not been verified unless noted as an ENERGY STAR® LED Lighting Facts, or SSL Quality Scheme certified product. Retailers and importers selling unmarked or unapproved electrical goods can be fined or imprisoned. Mains supplied downlights require installation by a licensed electrician.