Features:
LED energy saving lamp is the latest lighting technology.
Popular used by hotel, restaurant and other entertainment places.
Low power consumption, high illumination and extra-long lifespan.
specification:
Base: GU10
Glass cover
LED quantity: 60 pieces
Color Temperature: Pure White (6000-6500K)
Viewing angle: 120 °
Voltage: 220V
Power consumption: 5W Max
Lifespan: 50,000 hours
Package including:
1x GU10 LED lamp
SMD = Surface Mounted Devices (http://en.wikipedia.org/wiki/Surface-mount_technology).
60smd means it has 60 little LEDs as light source.
Nothing to do with light intensity.
Maybe I'm not seeing it, but any indication of how bright they are seems to be missing. Bad sign. These kind of globes can be way too dim to be any use sometimes.
I'd say "low illumination" and "pretty old lighting technology".
I have similar (not identical) GU10 in my kitchen (5x) and I am quite happy with them.
Always buy a few extra, they are not very reliable (but the dodgy ones will break fast and the rest will last).
What do you suggest as a not "pretty old lighting technology"?
5W is good if your wife is unattractive. You won't see her well! But aside from that, the first LED globes that came out were all of these multiple SMD (little LED). Nowadays, you can get a single LED that smashes these things. It is definitely the way things seem to be heading with these. (Oh, also they have even been introducing wifi into some of the newer bulbs lately)
Thank you for your kind advice re:wife :)
I have fully converted my house to LED.
I have the kind you mention as „better” in bedrooms and bathrooms.
I have the corn cob type as perimeter and patio lights.
As mentioned I have the SMD type in my kitchen (light bar with 5x5W).
I must say each to its own, the SMDs are very good for my purpose because of the angle (120) of dispersion of light (most star 3 or 4x individual units are spotlights, with a 55-65 angle).
I would not be assertive if I would not have them installed.
Wattage does not mean much. Firstly, many LED spotlights are technically 9W (e.g. 3 x 3W) but only consume 6W because of heat dissipation. Secondly, some 9 watt spotlights generate almost 600 lumen, whereas others barely do 300.
I personally prefer spotlights with LED's from reputed companies, like CREE or Epistar. Those can be had from eBay for a similar price. Angles have improved on these recently.
I have some corn bulbs with the smaller LED's, but am somewhat worried about these. The ones without cover can light up if you touch them while they are off (but connected to mains), which implies there is current on the outside. I also used to use one outside (on 24/7), only to find that it completely burned out internally (as in, wires stripped and plastic brown and crumbling) because it could not handle the heat. Not sure I would buy spotlights with the small LED's.
If you need 60 SMD to light up a bulb, this must be a really dodgy bulb.
Different technology.
With high powered LEDs you need to bleed heat fast.
Cree type have 1-2W per device and need serious aluminium surface as a heatsink.
SMD type have tenth of W per device (hence 60) and may not need direct heatsinks.
I am inclined to belive these 5W units are more like 3.5W or so…
The units I have are bright and distribute the light uniform on a wide area (not the same model, but very similar (http://dx.com/p/gu10-5-5w-93x3528-smd-led-500-650lm-6000-700…) but the price is quite different.
These are indeed very different beasts to high output LED units. Whether these being sold in this deal are good, bad, or indifferent, I do not know. The SMD bulbs bought by 'Make it so', above, certainly sound like they were dodgy, so just in general - as always - it's buyer beware.
Be VERY sure you are happy with daylight or 'pure white' colour temperature lighting in your home before you buy any quantity of these.
I'm not even going to go into the subject of ColourRenderingIndex (a personal journey for me!)
Be VERY sure that you buy only one of ANY (even locally sourced) LED lighting unit to try, so as to ensure that they don't interfere with digital (or analogue) television or radio in your house. I've had big issues with many units purchased over time.
Treat all quoted household LED lighting lifespans with a grain of salt. Particularly with high-output units (not these), but you must always factor internal components when it comes to any in the GU10 (mains voltage plug-in) form-factor.
I was a reasonably early adopter (just to try) of several different brands of MR16 (as much as $50 each), all with quality LED's and drivers (Cree, Nichia, etc.). The genuinely bright ones - at least the ones with metallized plastic heatsinking (now the norm) are starting to fail. Some can't be beyond the 15,000hr mark.
All high-output LED stuff gets bloody hot - not hot enough to set your house on fire in the way that halogens can - but still bloody hot. Alot of stress, as regards supposed hour-lifespan.
Be aware that if you are buying high-output GU10 stuff - because of the internal transformer components - you should seriously lower your expectations as regards their longevity.
Without any indication of light output, I don't see why you would buy this.
As an idea, I had 1w SMDs in my car's parkers. With the cool white (about 6000k) they were much brighter than the 5w standard globes. I now have 3w SMDs in there and they are probably about 1/2 the intensity of my 55w headlights.
Parkers are probably OK to replace, but just make sure not to use LEDs to replace standard 'turn signal' incandescent bulbs. LEDs have an extremely narrow field of brightness, so while they may be almost blinding around a 30 degree angle, they'll be nearly invisible from any other angle, and impossible to see in daylight.
While LEDs are fantastic for some things, they should only be used in cars they are designed for. Older models rely on a bulb where the light shines from all exposed parts of the bulb, whereas cars designed for LED bulbs use more reflective/diffractive surfaces inside the lens to widen the narrow beam, or use special LED bulbs with multiple LEDs.
I know this from experience, as I had a mate who thought he was doing the right thing replacing his turn signal bulbs with LEDs, but couldn't get a pink slip for his car as the indicators were completely invisible unless you were virtually standing in front of them and bending down. They were blindingly-bright from the front, but invisible from the side where they actually need to provide the 'signalling.'
Unfortunately many new cars are becoming extremely dangerous due to misuse of LED lighting, the new AUDI cars use a tiny 1cm LED strip as turn signals, but they are impossible to see in bright daylight. They're not even as bright as my Christmas tree lights! Any small amount of sunlight entering the strip completely washes out the LEDs and there's no way to know if they're flashing or not. Their 'side' mounted turn signals are also tiny 1cm strips mounted in the side mirrors, can only be seen from the front of the car, and are invisible to anybody who's about to cross the street that the car is about to turn into. Scary, but the world is full of stupid people who put fashion ahead of safety.
how bright is 60smd?