[Solved] HB4 LED - Why after replacing the HB4 LED bulbs with HB4 LED the refletor diffus

Hello
I replaced the bulbs in the fog lamps with LED bulbs

However, after the exchange, the light is diffused and definitely the world where it falls.
After inserting the previous bulb, the light cuts off perfectly as seen in the photo


I did a small experiment and obstructed the lens in an LED bulb but nothing gave distraction was very similar.
Then I controlled the length of insertion of the LED bulb into the shade but the light was still diffused.
Can anyone explain why this is happening to me?

Do you have approval for this bulb?

BC109B wrote:

Look how the light source is placed in the bulb and the lamp. The filament is small, it is in the axis of the bulb. The diodes are distributed on the board and thus their light is not as focused as the light from the filament.

I thought so too. I tried to cover up various Leds but the meager effects
It looks like even when I buy those that have directional led, for example:

There is no guarantee that the distance from the reflector axis is maintained and that the light will still be diffused.

Dj.McG wrote:

Can anyone explain why this is happening to me?

Because the Chinese pats these bulbs (without maintaining any norms and standards) for lovers of village-tuning for whom it is supposed to glow blue or white and the direction and quality of lighting does not matter to them - there is to be lans under the firehouse and the rest does not count.

These are not great either. Look at the Chinese - they have a large selection. You need to look for ones with very small sizes of glowing chips.
E.g. something like this:


Probably the best parameters currently have Philips Luxeon chips.
But that's not all - the thickness of the base on which the chips are placed is also very important. Usually it is a few millimeters of heat-conducting sheet, which means that the chips on both sides of the reflector are a few millimeters away from the reflector's axis. The base must be thick enough to dissipate heat well. But if you search, you will again find those in which the base is thin. As in the next picture (click on the picture to enlarge it and read the comment):


As you can see the base thickness has been reduced from 6mm to less than 1mm.
Someone will say that they are only millimeters and it means nothing. Certainly most of you have had to do with a wrongly mounted light bulb. What is the possibility of deviation? 2mm? 3mm? Have you seen the desolation in the stream of light? A significantly distorted light / shadow border, the stream flies somewhere along the side of the road ... Of course this LED lamp is still not approved and you put it on at your own risk. There is a chance, however, that it will shine more on the road than after the eyes of the opponents

Thanks for the answers colleagues.

Added after 1 [minutes]:

Wrong angle of incidence of LED lights, wrong location of SMD LEDs.