4 ms·
We need to decide on a new design for "LED bulbs" that maximizes cooling, instead of insisting on sticking to a design that was optimized for a completely diffe
by kalleboo 2y ago
We need to decide on a new design for "LED bulbs" that maximizes cooling, instead of insisting on sticking to a design that was optimized for a completely different bulb type (vacuum bulbs) where the electronics have to be stuck in an unreasonably small and difficult to cool base which is then mounted inside a cavity with no airflow.
Here in Japan, ceiling lights have a standardized socket[0] so ceiling lamp fittings are easily user-replaceable without people being stuck with old bulb fittings, and so ceiling LED lamps are not fitted as bulbs but typically a large flat metal plate with the LEDs mounted to it[1], which results in fantastic cooling and good lifespan.
[0] https://www.garageland.jp/wpimg/hikkakeceiling_topimg.jpg https://www.garageland.jp/wpimg/hikkakeceiling_topimg.jpg
[1] https://kensroom.c.blog.ss-blog.jp/_images/blog/_bda/kensroom/LEDLIGHT-2-6402c.jpg https://kensroom.c.blog.ss-blog.jp/_images/blog/_bda/kensroo...
Edit: Our apartment was built in 1998, at the height of "CCFLs are the future", and the hallway lights are all recessed "G24q" bulbs, which I had never heard of before.
There were supposed to be the CCFL-native replacement for Edison screw bulb sockets, where instead of having to build the CCFL ballast into each bulb, it was external in the ceiling socket, increasing longevity and decreasing the cost of the bulbs themselves.
We have yet to need to replace any of them, a much longer lifespan than I've ever had from one of those CCFLs with the ballast embedded in the base of the Edison bulb. With a less-compromised ballast they also work much better (light quicker, less affected by temperature)
- deleted 2y ago[deleted]