Cover for glass light guide plate

A light cover for mounting to a downlight trim installed on a ceiling. A light guide plate is mounted to the downlight trim. The downlight trim has an opening therethrough through which the light guide plate extends. The downlight trim projects outward from the light guide plate so that a diffusion plate of the light guide plate extends outward from the downlight trim. The light cover has a circular opening therethrough through which the diffusion plate of the light guide plate extends so as to light up the light cover. The light cover has a collar which extends from an outer front facing surface of the light cover towards the rear facing surface of the light cover.

TECHNICAL FIELD

The present invention relates to the field of display technologies, and in particular, to a cover for a glass light guide plate.

BACKGROUND OF THE INVENTION

In the display field, the role of the glass light guide plate disposed in a display panel is to guide the scattering direction of a light being shone on the glass light guide plate, to improve the brightness of the display panel, and to ensure the brightness uniformity of the display panel. It is desirable to prevent the light being shone on the glass light guide plate from being continuously reflected inside the glass light guide plate.

SUMMARY OF THE INVENTION

According to the present invention, there is disclosed a light cover for mounting to a downlight trim installed on a ceiling. A light guide plate is mounted to the downlight trim. The downlight trim has an opening therethrough through which the light guide plate extends. The downlight trim projects outward from the light guide plate so that a diffusion plate of the light guide plate extends outward from the downlight trim. The light cover has a circular opening therethrough through which the diffusion plate of the light guide plate extends so as to light up the light cover. The light cover has a collar which extends from an outer front facing surface of the light cover towards the rear facing surface of the light cover.

Further according to the present invention, there is disclosed a light cover for mounting to a downlight trim installed on a ceiling. A light guide plate is mounted to the downlight trim. The downlight trim has an opening therethrough through which the light guide plate extends. The downlight trim projects outward from the light guide plate so that a diffusion plate of the light guide plate extends outward from the downlight trim. The light cover has a circular opening therethrough through which the diffusion plate of the light guide plate extends so as to light up the light cover. The light cover has a collar forms a circular rear facing opening which extends from an outer front facing surface of the light cover towards the back of the light cover and which has a slightly larger diameter than the downlight trim.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the description that follows, numerous details are set forth in order to provide a thorough understanding of the present invention. It will be appreciated by those skilled in the art that variations of these specific details are possible while still achieving the results of the present invention. Well-known processing steps are generally not described in detail in order to avoid unnecessarily obfuscating the description of the present invention.

In the description that follows, exemplary dimensions may be presented for an illustrative embodiment of the invention. The dimensions should not be interpreted as limiting. They are included to provide a sense of proportion. Generally speaking, it is the relationship between various elements, where they are located, their contrasting compositions, and sometimes their relative sizes that is of significance.

In the drawings accompanying the description that follows, often both reference numerals and legends (labels, text descriptions) will be used to identify elements. If legends are provided, they are intended merely as an aid to the reader and should not in any way be interpreted as limiting.

Referring toFIG. 1, there is shown a top view of a light cover100mounted to a downlight trim102which in turn is mounted to a light guide plate104. The downlight trim102has an opening106through which the diffusion plate108of the light guide plate104extends. The downlight trim102is disposed on or against a ceiling and projects outward from the light guide plate104so that the diffusion plate108of the light guide plate304extends outward from the downlight trim.

Referring toFIG. 1, a light cover100is mounted to the downlight trim102. The light cover100has a circular opening110through which the light guide plate108extends so as to be able to light up the light cover100. The light cover100has a collar112and extends from the outer front facing surface114towards the rear facing surface116of the light cover. The collar112forms a circular, rear facing opening118which has a slightly smaller diameter than the outer diameter of the downlight trim102. For example, the circular rear facing opening118has an outer diameter Y while the circular rear facing opening of the downlight trim102has an outer diameter X. This difference causes an interference fit between the circular rear facing opening118of the light cover100and the outer diameter of the downlight trim102. Between the collar112and the circular rear facing opening118is a curved inner surface122which extends around the interior of the light cover100. The downlight trim102is constructed of a somewhat flexible material that holds its shape such as a polycarbonate or plastic material. The light cover100is mounted to the downlight trim102by pressing the circular rear facing opening118of the light cover against the outer circumferential surface124of the downlight trim so that the downlight trim flexes inward towards the light guide plate108until the outer circumferential surface124is able to pass through the narrower opening of the circular rear facing opening118of the light cover100. Then, the downlight trim102will snap back into its unstressed shape and be trapped in the curved inner surface122which extends around the interior of the light cover100.

To remove the light cover100from the downlight trim102, the light cover is pulled away from the downlight trim so that the downlight trim flexes outward away from the light guide plate108until the outer surface124is able to pass through the narrower opening of the circular rear facing opening118and the light cover can be pulled away from the downlight trim.

The light cover is constructed of a somewhat flexible material selected from the group comprising polycarbonate and plastic.

The present invention has been described in detail above with reference to the embodiments of the drawings, and various modifications of the present invention can be made by those skilled in the art in light of the above description. Any modification within the spirit and principle of the present invention, made, equivalent substitutions, improvements, etc., should be included within the scope of the present invention. Thus, certain details of the embodiments should not be construed as limiting the present invention, the present invention will define the scope of the claims appended as the scope of the present invention.