Trouble is LED's do not make good work lights.....
Indeed; but why?.......is it because the light is polarised?.......or too narrow a band?
My LED flashlights are rubbish; even just for peering down into an oil tank to check the level.....the old fashioned tungsten filament 'beam' flashlights seem much better for task lighting. :-/
Its simple, the LED is not a white light source, it is actualy a narrow red, Green and Blue light source.
This makes it appear white (ala white on a TV/Monitor screen) and for this they are very good.
The problem is that the light spectrum for each colour is very narrow (being related to the Energy gap of the semiconductor compound from which it is produced) and so when the light reflects off a surface, you get a lot of detail lost as all surfaces reflect different wavelengths of light in differing amounts.
The result is lost detail and tiring light to work under.
One of the LED solutions being considered to improve the spectrum of light output from LED's is to use a UV LED with a phosphor coat ala a CF bulb!