Combined frame and back light module
View Patent ↗A combined frame for housing at least a lamp with one end connected to a power cord is provided. The combined frame comprises a lower frame and an upper frame. The lamp is positioned between the upper frame and the lower frame. The lower frame has an angled cable groove that encloses the power cord from the lamp. One end of the power cord is exposed outside the lower frame. The upper frame is positioned over the lower frame. Through the angled cable groove, the power cord is prevented from sliding in the axial direction of the lamp by any unintended external force and hence pulling power cable away from the lamp. This invention also provides a back light module comprising a light-guiding plate and the aforementioned lamp and combined frame.
1. A back light module, comprising:
a light-guiding plate having at least a light-incidenting surface, at least a light-diffusing surface and a light-emitting surface;
at least a lamp with one end connected to a power cord, wherein the lamp is installed on one side of the light-incidenting surface so that light emitted from the lamp travels to the light-incidenting surface of the light-guiding plate, passes through the light-diffusing surface and emerges from the light-guiding plate via the light-emitting surface;
a combined frame for supporting the light-guiding plate and the lamp, the combined frame-comprising:
a lower frame having an angled cable groove, wherein the power cord is enclosed within the angled cable groove such that the end of the power cord is exposed outside the lower frame; and
an upper frame positioned over the lower frame, wherein the upper frame has a window for exposing the light-emitting surface of the light-guiding plate.
2. The back light module of claim 1 , wherein the lower frame furthermore comprises a stationing block such that the angled cable groove is formed inside the stationing block.
3. The back light module of claim 2 , wherein the upper frame furthermore comprises a cover plate such that the cover plate covers the top section of the stationing block.
4. The back light module of claim 1 , wherein the angled cable groove has at least an angled corner.
5. The back light module of claim 4 , wherein the corner of the angled cable groove is selected from a group consisting of a right corner, an acute corner and an obtuse corner.
6. The back light module of claim 1 , wherein the interior of the angled cable groove furthermore has a plurality of bumps for restraining any movement in the power cord.
7. The back light module of claim 1 , wherein the sidewalls of the lower frame furthermore have a plurality of protrusions and the upper frame furthermore has a plurality of corresponding fasteners each with an opening thereon so that each protrusion can fasten onto the opening of a corresponding fastener so that the upper frame and the lower frame are fastened together.
8. The back light module of claim 7 , wherein each protrusion furthermore has a slant surface for guiding the fastener so that the opening in the fastener can smoothly click onto the protrusion.
9. The back light module of claim 1 , wherein the module furthermore comprises an optical film positioned over the light-emitting surface.
10. The back light module of claim 1 , wherein the module furthermore comprises a reflector positioned on one side of the lamp but enclosing the lamp.
11. The back light module of claim 1 , wherein the module furthermore comprises a reflective plate positioned at the bottom of the light-guiding plate.