Patent Application
20090180296
1. Technical Field
The present invention relates to logo displays, and particularly, to a logo display with a light guide plate.
2. Description of Related Art
Logo displays are widely used indoors and outdoors for displaying logo patterns.
In a typical logo display, a logo pattern is adhered or painted on a light guide plate, and a light source is configured for illuminating the logo pattern and as well as the light guide plate. However, the logo pattern is two-dimensional designed, the logo display can not show a stereoscopic of the logo pattern.
In another typical logo display, a logo pattern is formed on a surface of a light guide plate, and a light source is configured for illuminating the light guide plate. However, a part of the logo pattern, which is far away from the light source, may be not clear enough in vision.
What is needed, therefore, is a logo display which can show a stereoscopic of the logo pattern thereof, and the logo pattern thereof can be seen more clearly.
A logo display includes a light guide plate and a light source. The light guide plate includes a light incident surface and a light output surface. The light output surface has a logo pattern and a number of microstructures thereon. The microstructures are arranged along a contour of the logo pattern. The light source is arranged adjacent to the light incident surface and configured for emitting light beams. The microstructures are structured and arranged in a manner such that the light beams exiting from the output surface illuminate the logo pattern and the microstructures, and the light intensity at the microstructures is greater than that at the logo pattern, thus producing a stereoscopic logo pattern.
Other advantages and novel features of the present logo display will become more apparent from the following detailed description of embodiment when taken in conjunction with the accompanying drawings.
Many aspects of the logo display can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present logo display. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Embodiments of the present logo display will now be described in detail below and with reference to the drawings.
Referring to
The light guide plate 11 is rectangular shaped, and includes two light incident surfaces 110, a light output surface 111, a bottom surface 112 and two opposite side surfaces 113. The light output surface 111 is opposite to the bottom surface 112. The two light incident surfaces 110 are opposite to each other, and are connected to the light output surface 111 and the bottom surface 112. The reflecting plate 13 is arranged adjacent to the bottom surface 112.
A logo pattern 14 and a number of microstructures 114 are defined on the light output surface 111 of the light guide plate 11. The microstructures 114 are arranged along a contour of the logo pattern 14. The logo pattern 14, the microstructures 114 and the light guide plate 11 can be integrally formed into a unitary piece. Alternatively, the microstructures 114 can be formed on the light guide plate 11 by etching or laser engraving, while the logo pattern 14 is preformed and then adhered directly on the light guide plate 11.
The microstructures 114 can be recesses, protrusions or any combination thereof. A profile of each of the microstructures 114 can be in a triangular shape, more simply, in a V-cut shape (see
The two light sources 12 are arranged adjacent to the respective two light incident surfaces 110 of the light guide plate 11. Each of the light sources 12 includes a base 121 and a number of light emitting diodes (LEDs) 122 arranged on the base 121. The LEDs 122 of each of the light source 12 are arranged in a straight line facing the light incident surface 110.
Each of the two light sources 12 is configured for emitting light beams. The light beams are guided in the light guide plate 11 and outputted from the light output surface 111. Due to the microstructures 114, internal total reflection of the light beams in the light guide plate 11 can be reduced. More light beams would be scattered by the microstructures 114, and be outputted via the microstructures 114. Referring to
Simultaneously, due to the stereoscopic and the two light sources 12, the logo pattern 14 can be seen more clearly.
A plurality of dots (not shown) can be formed on the bottom surface 112 of the light guide plate 11 to make the light transmission in the light guide plate 11 uniform. The reflecting plate 13 is configured for reflecting the light transmitting through the bottom surface 112 of the light guide plate 11 to the inner of light guide plate 11, in this way, light loss can be reduced.
A reflecting film (not shown) can also be adhered on each of the two side surfaces 113 to reduce light loss.
It is understood that the above-described embodiments are intended to illustrate rather than limit the invention. Variations may be made to the embodiments and methods without departing from the spirit of the invention. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 200810300108.7 | Jan 2008 | CN | national |
