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Increasing the lifespan of a bulb makes it worse in every other way

maurycyz.com

71–80 of 202 posts

Re: Increasing the lifespan of a bulb makes it worse in every other way

#71
post #26

Earlier quoted context omitted.

I bought all new Philip hue bulbs going on 7 or 8 years ago now and not a single one has gone bad. Maybe you're just buying cheap poor quality bulbs? A 100 out of 100 success rate after 8 years.

I bought a whole bunch of GE LED bulbs figuring big name, probably more reliable. Nope. Diabolically bad. Never again.

Me too. They were a lovely colour temp and high CRI, really well diffused too. But wow, they died so fast in almost any fixture.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#72
post #63

While the author mentions that they are not trying to defend the Phoebus cartel, I think they may inadvertently be somewhat misleading in their explanation. What they are saying is, from an engineering standpoint, true. But my understanding of the argument against the Phoebus cartel is that it was using legitimate engineering points as the official justification for profiteering business collusion: that the points we…

Yeah, moreover, the argument is a particular kind of apologism for one or another kind of profiteering. Basically, "the people criticizing this (profiteering) don't understand the full details of how business (give some business details)". But then, actually, even with all the details, the alleged profiteering is actually happening and naturally people running these business know lots of details but they like money too.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#73

I've never had LED lights last anywhere near the purported 5-7 year timeframe. The worst ones are the small decorative ones with the tinier screw part that my house seems to have an inordinate number of. Those last maybe 6 months and then they start getting dimmer and then all the lights in the circuit get worse at once. I like LED lights immensely but the idea they last even 2 years is a lie in my opinion.

In the category of private victories without any economic use (any hobby costs you something): I store boxes for LED lights with receipts. Write on the box where you put the light and chug it in the garage. I have not failed to get a new one for free at our local home depot equivalent after 3 to 4 years. It doesn’t help the store that the boxes used to state how many years they would last.

I agree that even Osram doesn’t meet the hours or years, Philips doesn’t by a long way.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#74

I've never had LED lights last anywhere near the purported 5-7 year timeframe. The worst ones are the small decorative ones with the tinier screw part that my house seems to have an inordinate number of. Those last maybe 6 months and then they start getting dimmer and then all the lights in the circuit get worse at once. I like LED lights immensely but the idea they last even 2 years is a lie in my opinion.

Ditto. They barely last 12 mos. This goes for both types: LED Light Chips (Strips) and LED String Lights from various manufacturers.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#75

There are varying levels of quality for the same bulb. I don't know what the difference is in the bulb but they make a difference in the order of years. I'm in Switzerland where we can no longer buy halogen bulbs. Every bulb in our apartment is led except 7 bulbs under the cabinets in our kitchen. I used to buy bulbs from a hardware store but they would only last about a year. When they banned halogen bulbs I found t…

What do you like about halogen bulbs?

The light spectrum they produce.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#76
post #70
post #44

Earlier quoted context omitted.

Do you keep your light on constantly? I used to have a lamp that I kept replacing bulbs for "all the time". I didn't understand why since the light bulbs claimed to last for years and years. One day I read the light bulb package more closely, and it said something along the lines of, "7 years life span at 2 hours per day" in small text (the numbers may be wrong, going by memory). Doing the math, the number of active…

> I don't know if LED bulb packages play similar tricks but it's worth checking out. It's perfectly logical that lifetime should be measured in hours of service, not days of existence. People don't know how to translate 7500 hours of service into a real duration, though. Hence the years.

I would expect 7500 to translate into 0.85 years though, not 7.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#78
post #63

While the author mentions that they are not trying to defend the Phoebus cartel, I think they may inadvertently be somewhat misleading in their explanation. What they are saying is, from an engineering standpoint, true. But my understanding of the argument against the Phoebus cartel is that it was using legitimate engineering points as the official justification for profiteering business collusion: that the points we…

> In doing so, the article perhaps obscures the point that business collusion, I expect, is more often built around legitimate reasoning taken to illegitimate extents and conclusions, than around outright fabrications.

It also doesn't quite come around to the idea of something you might call "convenient" obsolescence. Not planned, not actively colluded to happen (the Phoebus cartel did do this, but are one of few examples), but very convenient for the manufacturer when optimizing for other factors (mostly cost) instead of lifespan.

Re: Increasing the lifespan of a bulb makes it worse in every other way

#79
> In order to put the emission peak in the visible spectrum, the filament would need to run at ~5700 °C (...) No metal can survive these conditions: Tungsten melts at "only" 3422 °C.

Hmm, can we possibly find something that does survive at 5700 °C to use as a light source? Perhaps molten metal confined in a magnetic field...

Re: Increasing the lifespan of a bulb makes it worse in every other way

#80

There are varying levels of quality for the same bulb. I don't know what the difference is in the bulb but they make a difference in the order of years. I'm in Switzerland where we can no longer buy halogen bulbs. Every bulb in our apartment is led except 7 bulbs under the cabinets in our kitchen. I used to buy bulbs from a hardware store but they would only last about a year. When they banned halogen bulbs I found t…

What do you like about halogen bulbs?

They last forever. I moved into my current house over a decade ago and the only bulb I haven't had to change is the single halogen that was already in a bathroom.

With halogen, the lifespan doubles just by reducing the power by a single percent. Having a light fitting far away enough from the DB means that the tiny internal resistance of the wire going to this bulb is enough to make a difference to lifespan.

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