The Future of LED will be 'brighter'.


from http://www1.eere.energy.gov/buildings/ssl/...ics_whyssl.html

Today I was at Ace Hardware saw a Toshiba LED bulb E27 screw in type. Quite bright but cost about Rm100 each

This post has been edited by idoblu: Jan 14 2012, 05:54 PM

Yes, but isnot bright compare to the older lamp, also don't know which smart azz put white. Is dangerous for white light especially raining and high mist condition.

Actually, there are still finalising on the international standard to classify brightness emitted from LED. I do not know what is behind the theory, it seems the current light meter used to measure brightness is not registering the correct brightness of LED, for example, say a 350lumens of a fluorescent light VS 350lumens of LED light, the LED light might look brighter to our eyes.

Older street light are using 250W SON tube, the LED street light, if i remember correctly, is less than 100W each, u may imagine how much our municipal saving every night.

To compensate for the less brightness, they lowered the street lighting pole and shorter gap from pole to pole.

I did point out the mist issue to the supplier, and they showed sample of the LED light in operation during high mist, i can say the picture are showing the LED is performing good. The photo might be photshopped, but so far, i doesn't seems to have much problem travelling on the subang airport road during heavy downpour, just sometimes, eyes couldn't adjust to the sudden change of colour temperature. Anyhow, LED manufacturer are working on different colour temperature for their product as well.

They should use 4500 or lower k color. I travel along that way daily very bad when medium too heavy rain. There still reason why hela light is still yellow.

The LED light look brighter to our eye is because the led wave lenght travel more straight than cfl or fluroscent. CFL light scatter around and able to bright more area than LED. While LED able to light at narrow degree and more concentrate.

When you check at led light bulb spec, you will be able to see the spec of the LED light angle degree like 90,120 or 160 which is no match to the cfl or fluroscent.

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Added on January 14, 2012, 9:45 pmThis light k color should be well understand by this installer or the authority. Why still fail?

Yellow light wave lenght travel far more than bright color or others color. That is why car still use yellow light. fog light still in yellow.

This post has been edited by ozak: Jan 14 2012, 09:45 PM

LED will not die but it will nor replace all type of light bulb.

so far, LED light are more for ID/decorative lights. Buildings are still depending on CFL and other gas tube to achieve acceptable lux level.

US fed gov still not allow to have LED light in all the dept.

I went to this shop before, they are selling CREE brand LED.

Tcl Electronics (Malaysia) Sdn. Bhd.

Address: 1F/20, Ioi Business Park, Bandar Puchong Jaya, Puchong, Selangor, 47100

Hi, can I get some advise on downlights, chokes


1. Are all downlights now typically built in choke?
eg.
https://www.luminancesys.com/products/phili...-inch-round-17w
https://www.panasonic.com/my/consumer/home-...nnc7586805.html

2. Are external chokes still better (from what I read in this thread, its longer lasting, easier to replace) than built in chokes

3. I couldn't find a LED downlight with external choke, can anyone help recommend? I couldn't find much info googling/lazada-ing on downlights with external choke

4. Any particular brand of downlight I should focus on? Panasonic? Philips? Osram?

Thanks in advance

Cheers!

led lights do not need or have chokes

the choke you refer converts from ac to dc, calleed driver

with external driver
https://shopee.com.my/12W-18W-6-Inch-LED-Re...5731.1062096214


built in
https://shopee.com.my/-Sirim-LED-Downlight-...2252.5810256850


now most new ones are built in to save cost

if you lazy to open the ceiling every time, can opt for e27 bulb type
https://shopee.com.my/%F0%9F%8C%9F-ADJUSTAB...4731.5157364730

OMG...I feel like an idiot now...... TQVM for your info!

may I get an opinion, my new home would have about 50-60 downlights (btw, I'm redoing the whole plaster ceiling):

Should I go for all LED downlights (lazada pricing is about RM19-RM23 for philips-Meson and panasonic) or some other alternative (LED lightbulb or any others which I haven't research yet on what is available at the moment)
If alternative, why? (cheaper lights or installation/electricity/durability/easy of replacing, etc)

Based on what I read, to replace these downlight (https://www.lighting.philips.com.my/consumer/p/recessed-spot-light/5920431H1), I just need to screw the wires in right? Still, it seems "harder" than my current "screw in downlight bulbs"

Cheers!

TQ!

For this particular brand : Philips Meson 17W (https://www.lazada.com.my/products/philips-meson-led-downlight-5-6-13w-17w-led-philips-downlight-59464-59465-59466-59467-i1135416669-s3222830184.html?), is this with external driver or built in?
Is the red circle the driver that comes with the downlight or "something" my electrician has to install for me as part of "installation of lightning point"?





This is what I have currently at my home, just screw in/screw out.
Would you go for this kinda e27 bulb or a LED downlight like Philips meson?

Cheers!

it is up to you really.

the socketable type aka screw in type usually e27 socket are easy to replace. but dont look as beautiful and usually have lesser light output per watt due to the bulb inside a downlight-housing. the led bulbs might have certain limitations like certain downlight housing might not be suitable due to design that is poor in venting out the heat accumulated in the housing.

led downlights(like the philips meson) look better and usually have less glare and sharpness of the light as the light output is spread out over the diameter. a bit harder to replace if dont have the skills or tools. replacement is buying the correct diameter light, TURN OFF THE POWER, pull down the failed light, test the wire terminal with testpen to make sure no power, unscrew the failed light wire, screw in the new light wire, test the light by power on then finally power off the light and push the light into the ceiling hole.

a good quality led light would last many many years without needing replacement. dont get those lousy unbranded crap. those will fail in less than a year.

philips is built in.

driver always comes together with the led light if external driver

https://www.lighting.philips.com.my/consume...light/5920431H1
Philips Meson is built in. so the wires terminate directly to the light fitting. i suggest you ask the electrician to add an external connector so its easier to change in the future.


i am migrating from the one you show back to light bulb type (reverse of yours)
lazy to change the recessed light every now and then (about 2-3 years once). everytime have to open the plaster ceiling that makes my skin itchy. yes i hated plaster ceiling.
i used to buy expensive philips osram, that last for many years but the light level become dim after the first 1 year of use.
end up i now buy the cheapest rm6 18W and rm7 20w versions

e27 means its very easy to change the bulb, just unscrew and change.
drawback is that there is always some gap that ceiling dust may fall down. so for light above your dining table, use the recessed.

This post has been edited by fireballs: May 6 2021, 11:38 PM

TQ slimey and fireball for your input!

guess it's boils down to the user's preference. e27 screw in or recessed.

knowing me, I'll go with e27 for easy replacement, while wifey will be wanting the recessed built in drivers for aesthetic looks...
haiz....another headache of reno, all this small things to look into.

Thanks again!

hi fireballs,

1. may I know where you getting your casing from? I went to 2 light shops today. both shops don't sell it
shopee and lazada can easily find, but I read that there's quite a bit of difference in quality right? (such as the reflector and casing).

2. Gap you mentioned is between the ceiling and the bulb itself? Are the gaps as per the blue and green arrows?


3. Having this sort of casing would require at least 5-6 inches of space above the plaster ceiling?

Thanks!



This post has been edited by vernee26: May 8 2021, 09:22 PM