At first I was skeptical, but I took note that Philips was involved in developing this lamp. What do you think guys?

http://www.dailymail.co.uk/sciencetech/article-3018357/The-bulb-tells-insects-buzz-Engineers-design-light-blue-wavelengths-bugs-bay.html

http://www.computerworld.com/article/2903341/researchers-say-low-cost-longer-life-graphene-light-bulb-coming-this-year.html

So it's a standard filament LED covered in graphene? I wonder what difference it makes. Interesting, nonetheless.

If one wanted to ward off insects, why couldn't one just use ?

The graphene task is to conduct the electricity (so distribute the current well over the LED junction surface, so gain better uniformity of the current density) and at the same time being transparent, so do not block the light the LED generates, so it allows the complete LED die to be coated by the conductive layer without blocking the light.

So it is more part of the LED semiconductor technology, so boost the efficiency of the LED dies alone, not that much related to the overall bulb design (such LED dies could be then used in any LED assembly style - from "5mm", through filament, till 10W high intensity flashlight chips).

It is possible to use graphene as an arctube material of HPS and MH lamps?

It is possible to use graphene as an arctube material of HPS and MH lamps?

No, arctube shuold be an insulator, but graphene is a conductor, it will short out the arc...
Plus graphene is a 2D structure, just an atom thick carbon layer, so just alone not possible to be used for any structural component.
It's use is, where youneed some very thin film with reasonable conductivity (for it's thickness the conductivity is very high, but as you can not make it so thick, it can not replace tradditional bulk conductors), so applications are e.g. the current distribution over the LED junction surface, a conductive layer for top of some flexible materials (flexible OLED screens,...; electrically conductive, transparent, tough for that thin surface),...