Patent ID: 6439748
Filing Date: 2002-08-27
Classification: F16C,F16M,F21S,F21V

Abstract:
An overhead lamp comprising:a base; a support post assembly having an upper end, and a lower end that is fixed on said base; a bowl-shaped lamp shade including an annular opaque peripheral shade member that is attached to said upper end of said support post assembly and that has an inner periphery and an outer periphery, and a light-permeable central shade member, which has an outer periphery that is attached to said inner periphery of said peripheral shade member, said outer periphery of said peripheral shade member defining an upper end opening of said lamp shade; and a lamp unit disposed within said lamp shade and adapted to illuminate surroundings of said overhead lamp via said upper end opening and said central shade member of said lamp shade, wherein said central shade member is mounted removably on said peripheral shade member, whereby, said central shade member can be removed from said peripheral shade member so as to permit flow of air through said peripheral shade member, thereby facilitating heat dissipation within said peripheral shade member, and wherein said outer periphery of said central shade member is formed with a horizontally and outwardly extending flange, said inner periphery of said peripheral shade member being formed with a pressed clamping ring that extends upwardly, radially and outwardly therefrom, said lamp shade further including: a mounting ring plate, which has a generally Z-shaped cross-section, an inner periphery that is clamped between said inner periphery of said peripheral shade member and said clamping ring, and two diametrically opposed threaded holes; two press plates, each of which is disposed on and above a respective one of said threaded holes in said mounting ring plate and said flange of said central shade member, each of said press plates having a hole formed therethrough; and two bolts extending through said holes in said press plates to engage said threaded holes in said mounting ring plate so as to clamp said flange of said central shade member between said clamping ring of said peripheral shade member and said press plates, thereby fixing said peripheral shade member around said central shade member.