Alternative Technology Assn Forums

1. 

   solaraid-china
   Member

   With most CF globes having EdScrew fittings then surely LED (with incandescent lookalike features + 60w/100w equiv brightness) and bayonet BC22 fittings must be a go for all the OLD houses in Australia. One manufacturer here in China is putting together a prototype of such a globe for me at the moment if anyone is interested in how it works out. My home in Brighton Vic is full of incandescents with BC connectors so a LED with BC must surely be a go unless I'm missing something.

   Posted Friday 17 Apr 2009 @ 3:28:17 pm from IP #
2. 

   ghostgum
   Member

   CF globes are readily available with both ES and BC fittings. There are usually four variants on store shelves, ES and BC fitting in either cool white or warm white colour.

   While I like the long life of LED lights, there other factors to consider.
   Efficiency of CF and LED (lumens per watt) are comparable.
   If you want a diffuse light, it's easier to do with the larger CF tube.
   If you want a focussed beam, it's easier with LED, which has taken over the bicycle lighting and hand torch market.
   If you want to dim a light, it's easier and much more efficient with LED.
   If you want a bright LED light (i.e. 10+ watts) then you need to consider how you will cool the light. This makes it difficult to put 10W of LED into standard light fitting.
   Lance Turner wrote an article in ReNew about his ceiling light fitting. It looks like an oyster fitting, but behind the 300mm diffuser is a flat plat acting as heat sink, spaced off the ceiling to provide ventilation for cooling.

   My house was designed from the start with fluorescent lighting, and we use a mix of CF (mostly ES), PLC 18W and T5 14W or 28W tubes. Some of the T5 tubes are for uplighting above pelmets, and I'm thinking of adding LEDs above the pelmet to give a lower power and dimmer light for TV watching.

   Have a look at
   http://www.tesladownunder.com/LEDs.htm#100%20W%20LED
   for some experiments with bright LED lights and other electrickery.
   These would work well for street lights or outside lights that turn on and off on demand. The problem becomes one of cooling. You can't put one of these 100W LED modules into a standard fitting, or it will overheat. You need to design the fitting around the LED module.

   Posted Saturday 18 Apr 2009 @ 4:26:20 am from IP #
3. 

   Anonymous
   Unregistered

   We are a manufacture of LED Lamps.
   Products list: LED Spots, LED Bulbs, LED Flexible Strip, LED down light, LED Tubles.
   Would you mind to visit our

   Ricky Manager
   Shen Zhen BangPu Optoelectronic Technology Co., Ltd
   MSN：pangpu@live.cn
   skype:shiyu5207758
   E-mail:ricky8261@gmail.com
   welsite:www.bump-led.com/index_en.asp

   Posted Friday 4 Mar 2011 @ 9:16:19 am from IP #

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