Light guide plate locating construction

Abstract

A light guide plate locating construction includes a frame containing a mask and light tube with the light guide plate mounted at the open end of the mask; light permeating through one side of the light guide plate to project in the anticipated direction; locating holes being disposed at the top of the opening end of the mask; a retainer being inserted into the hole; the retainer including a locating portion and an interfering portion extending from the locating portion to the open end of the mask to hold against the edge of the light guide plate to protect the tube from being hit by the light guide plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing a construction of a backlight unit of the prior art.

FIG. 2 is an exploded view of a retainer in a first preferred embodiment of the present invention.

FIG. 3 is a schematic view of the retainer in the first preferred embodiment of the present invention.

FIG. 4 is a perspective view showing a construction of a locating hole of the present invention.

FIG. 5 is a schematic view of a retainer in a second preferred embodiment of the present invention.

FIG. 6 is a schematic view of a retainer in a third preferred embodiment of the present invention.

FIG. 7 is a schematic view of a retainer in a fourth preferred embodiment of the present invention.

Claims

1. A light guide plate locating construction includes a frame, a mask and a tube being disposed in the frame; a light guide plate being mounted at an opening end of the mask; streams of light emitted from the tube penetrating through the light guide plate and projected in the anticipated direction; a locating hole being disposed on the frame at where near to the opening end of the frame; a retainer being inserted and secured in the locating hole; the retainer including a locating portion and an interfering portion; the locating portion extending into the locating hole; the interfering portion extending from the locating portion facing the opening end of the mask; and the interfering portion holding against an edge of the light guide plate.

2. The light guide plate locating construction as claimed in claim 1, wherein the locating portion and the interfering portion of the retainer are connected to each other by means of a connection portion.

3. The light guide plate locating construction as claimed in claim 2, wherein the connecting portion is disposed in parallel with the frame.

4. The light guide plate locating construction as claimed in claim 2, wherein the connecting portion is disposed in parallel with the frame and a slotted hole is disposed on the frame to accommodate the connecting portion.

5. The light guide plate locating construction as claimed in claim 1, wherein a through hole is disposed to one side of the locating hole; the retainer having its locating portion to enter into the locating hole; an extension part being formed along the frame with its connecting portion up to where the through hole is disposed before being curved to penetrate into the through hole to connect to the interfering portion.

6. The light guide plate locating construction as claimed in claim 1, wherein an adhesion is further applied at where between the locating hole and the locating portion.

7. The light guide plate locating construction as claimed in claim 1, wherein the locating hole is disposed on the topside of the frame.

8. The light guide plate locating construction as claimed in claim 1, wherein the locating hole is disposed on one side of the frame.