1. A bottom lighting module, comprising:
a substrate;
a first combining member disposed on the substrate;
a first diffusion sheet supported by the first combining member;
a support, having a body and a second combining member, the body including a top end and a bottom face, the second combining member being extended from the bottom face and passing through the first diffusion sheet to engage with the first combining member;
a second diffusion sheet supported by the top end of the body; and
at least one light-emitting diode (LED) disposed below the first diffusion sheet.
2. The bottom lighting module according to claim 1, wherein said substrate is a printed circuit board and the at least one LED is associated with the printed circuit board.
3. The bottom lighting module according to claim 2, further comprising a back bezel disposed below the printed circuit board.
4. The bottom lighting module according to claim 2, further comprising a reflective plate disposed on the printed circuit board.
5. The bottom lighting module according to claim 4, wherein said reflective plate having a hole adapted to accommodate the first combining member.
6. The bottom lighting module according to claim 1, wherein said substrate is a back bezel.
7. The bottom lighting module according to claim 6, wherein said back bezel is composed of a metal plate.
8. The bottom lighting module according to claim 6, further comprising a printed circuit board having a hole adapted to accommodate the first combining member, wherein the at least one LED is associated therewith and the printed circuit board is disposed between the diffusion sheet and the substrate.
9. The bottom lighting module according to claim 8, further comprising a reflective plate disposed on the printed circuit board.
10. The bottom lighting module according to claim 9, wherein said reflective plate has a hole adapted to accommodate the first combining member.
11. The bottom lighting module according to claim 1, wherein said bottom face and the first combining member are spaced apart from each other by a distance ranging from 0.01 mm to 5 mm.
12. The bottom lighting module according to claim 1, wherein said first diffusion sheet has a hole adapted to accommodate the second combining member.
13. The bottom lighting module according to claim 1, wherein said second combining member is a pin.
14. The bottom lighting module according to claim 1, wherein said first combining member is a nut.
15. The bottom lighting module according to claim 1, wherein said first combining member has a hole jointing with the second combining member, a cross section of the second combining member and an aperture of the first combining member for receiving the second combining member have a shape selected from the group consisting of a circle, a hexagon, a square, and a triangle.
16. A bottom lighting module, comprising:
a back bezel;
a nut disposed on the back bezel;
a first diffusion sheet supported by the nut;
a printed circuit board, having a hole for passing the nut, being disposed between the back bezel and the first diffusion sheet;
at least one light-emitting diode (LED) associated with the printed circuit board;
a support having a body and a screw, the body including a top end and a bottom face, the screw being extended from the bottom face and passing through the first diffusion sheet to joint with the nut; and
a second diffusion sheet supported by the top end of the body.
17. A bottom lighting module, comprising:
a back bezel;
a printed circuit board disposed on the back bezel;
at least one light-emitting diode (LED) associated with the printed circuit board;
a nut disposed on the printed circuit board;
a first diffusion sheet supported by the nut;
a support having a body and a screw, the body including a top end and a bottom face, the screw being extended from the bottom face and passing through the first diffusion sheet to engage with the nut; and
a second diffusion sheet supported by the top end of the body.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for lightening a load of cement comprising:
mixing an uncured cement composition with an effective amount of a polymeric nanocomposite spherical bead comprising:
a thermoset polymer matrix and from 0.001 to 60 volume percent of nanofiller particles possessing a length that is less than 0.5 microns in at least one principal axis direction, wherein said nanofiller particles comprise at least one of dispersed fine particulate material, fibrous material, discoidal material, or a combination of such materials; and wherein said nanofiller particles are selected from the group of nanofillers consisting of: carbon black, fumed silica, fumed alumina, carbon nanotubes, carbon nanofibers, cellulosic nanofibers, fly ash, polyhedral oligomeric silsesquioxanes, or mixtures thereof, and wherein said nanofiller particles are dispersed throughout said polymeric nanocomposite spherical bead, wherein said spherical bead has a diameter ranging from 0.1 mm to 4 mm; and
placing the mixture in a selected location.
2. The method of claim 1, wherein said thermoset polymer matrix comprises at least one of a thermoset epoxy, a thermoset epoxy vinyl ester, a thermoset polyester, a thermoset phenolic, a thermoset polyurethane, a thermoset polyurea, a thermoset polyimide, or mixtures thereof.
3. The method of claim 1, wherein said thermoset polymer matrix comprises a terpolymer.
4. The method of claim 1, wherein said thermoset polymer matrix comprises a styrene-ethylvinylbenzene-divinylbenzene terpolymer.
5. The method of claim 1, wherein said nanofiller particle has a shape; selected from the group of shapes consisting of a powder, a pellet, a grain, a seed, a short fiber, a rod, a cylinder, a platelet, a bead, a spheroid, or mixtures thereof.
6. The method of claim 1, wherein said nanofiller particle comprises carbon black, possessing a length that is less than 0.5 microns in at least one principal axis direction and an amount from 0.1% to 15% of said particle by volume.
7. The method of claim 1, wherein said polymeric nanocomposite spherical bead is blended with other solid particles including at least one of sand, resin-coated sand, ceramic and resin-coated ceramic.