H4 LED globes

[dom14]

Hey guys,
These H4 LED globes that are advertised on ebay says they are H4.

http://www.ebay.com.au/itm/12V-H4-80...3D311406585692

So how come they are not suitable for headlights? It says they are suitable for Signal, Turn, Brake, Parking, Tail, DRL and Fog lights.
But, no mention about headlights? But, they are H4, which is the standard for headlights, right? Not for Signal, Turn, Brake, Parking, Tail, DRL and Fog lights??!!

2000 lumen brightness sounds ok?!

What am I missing here?

Thanx.

[Brissieboy]

I suspect that it is due to the difference in the source of the light.
H4 headlights rely on a point source of the light from the small filament for the reflectors to work properly and the LED versions have a wide spread source of their light - being sourced from many individual LEDs over a relatively large area. The design of the reflector is critical in producing the beam.
I have played with some H11 LED bulbs and even though they produce a similar amount of light to incandescent bulbs, they do not produce a significant beam from the reflector housing.

[jay see]

What about these.

http://www.stedi.com.au/h4-led-head-...-kit-cree.html

[dom14]

What about these.

http://www.stedi.com.au/h4-led-head-...-kit-cree.html

Yeah, I've noticed them. Price kinda indicated they are probably not worth the trouble. It has a bulky bubble base and LED point of source appears to be quite the same as those el cheapo ebay ones I've posted in the OP.

What do you reckon?

[dom14]

I suspect that it is due to the difference in the source of the light.
H4 headlights rely on a point source of the light from the small filament for the reflectors to work properly and the LED versions have a wide spread source of their light - being sourced from many individual LEDs over a relatively large area. The design of the reflector is critical in producing the beam.
I have played with some H11 LED bulbs and even though they produce a similar amount of light to incandescent bulbs, they do not produce a significant beam from the reflector housing.

Yeah, I think I understand what you're saying. The incandescent globe filament has a concentrated single point of origin which can aid a lot with the focal point and hence directing the beam properly. The LED one doesn't seem to have the same advantage.

May be, in order to use these LED ones as headlights, we may be looking at the matching reflector as well???!!!

[threedogs]

H4 LED headlights will cost about $90 plus for a pair, My mate is happy with his.
Im not convinced the hi beam is all it should be, but a nice white light thats for sure.
They come with fans fitted to cool the led drivers.

[dom14]

H4 LED headlights will cost about $90 plus for a pair, My mate is happy with his.
Im not convinced the hi beam is all it should be, but a nice white light thats for sure.
They come with fans fitted to cool the led drivers.

So, LED globes without fans will fail?

[threedogs]

No worth fitting if you do any night driving plus I dont think they are ADR approved

http://www.ebay.com.au/itm/CAR-LED-H...sAAOSw5dNWnY--

Not my cup of tea TBH

[dom14]

No worth fitting if you do any night driving plus I dont think they are ADR approved

http://www.ebay.com.au/itm/CAR-LED-H...sAAOSw5dNWnY--

Not my cup of tea TBH

I'm guessing Ebay el cheapo LED H4 globes as in the OP is advertised without the mention of "headlights", 'cos they are not legal in Australia?!

[threedogs]

the OP led are just smd led no drivers to give better brightness, the proper ones are about $90 plus , Stropp
runs a set , not sure about Mudski he has the led driving lghts