Patent ID: 7686480

Claim:
A light valve device comprising: a circuit board having a first surface, a second surface opposite to said first surface in a vertical direction, and a through hole extending from said first surface to said second surface; a light valve disposed adjacent to said first surface of said circuit board; and a heat-dissipating structure including: a heat-dissipating main body that has a first side disposed adjacent to said second surface of said circuit board and formed with a groove which is defined by a first contacting surface and two engaging surfaces, said first contacting surface extending in a longitudinal direction perpendicular to the vertical direction and having two longitudinal edges opposite to each other in a transverse direction perpendicular to the vertical and longitudinal directions, said engaging surfaces respectively extending from said longitudinal edges of said first contacting surface and defining an open side of said groove opposite to said first contacting surface in the vertical direction, said groove extending in the longitudinal direction through two opposite lateral sides of said heat-dissipating main body transverse to said first side, said open side of said groove having a width in the transverse direction smaller than that of said first contacting surface in the transverse direction, and a heat-dissipating block that includes an engaging portion and a heat-dissipating portion connected to said engaging portion, said engaging portion having a second contacting surface, and being disposed in said groove so that said second contacting surface is in contact with said first contacting surface of said first side of said heat-dissipating main body, said heat-dissipating portion extending through said first through hole in said circuit board toward said light valve.