Patent ID: 8083371

Claim:
An illumination device, comprising: a lamp holder, including a plurality of housings, and each housing being arranged at a bottom of the lamp holder and tilted in a specific inclined direction towards an exit aperture, and a sidewall disposed on both sides of an inclined direction with respect to each housing of the lamp holder for carrying a light emitting diode device, and the two sidewalls being titled with respect to the inclined direction of the housing and disposed opposite to the exit aperture of each housing; a plurality of light emitting diode elements, installed on the sidewalls on both sides of each housing respectively; a plurality of reflection covers, each being installed between adjacent housings of the lamp holder, and having a plurality of first reflection surfaces extended between the two sidewalls of each housing and extended horizontally towards an exterior of the housing and a plurality of second reflection surfaces extended between the two sidewalls of each housing and extended vertically towards a bottom of the housing.