KR200279595Y1 - Signs illuminated by refraction and reflected light - Google Patents

Abstract

The present invention relates to an illumination signboard using a property of refracting and reflecting light in a light guide plate of a transparent acrylic material using a light emitting element, and a light beam reflected on a smooth reflection surface on the upper side of a conventional light guide plate is regularly reflected, In order to solve the problem that the light rays reflected by the indentation lines of different sizes are illuminated brightly or blurred according to the size of the indentation display line, irregular scratches are formed on the upper side of the light guide plate so that the light rays emitted from the light emitting elements cause irregular reflection So that the light guide plate can be more effectively used by reflecting the light rays evenly on the entire surface of the back surface of the light guide plate where various indented lines of various pieces are formed.

Description

Signs illuminated by refraction and reflected light {omitted}

The present invention relates to a signboard for advertisement which is illuminated with an illuminating light by utilizing the property of refracting and reflecting light in a light guide plate of a transparent acrylic material by using a light emitting element.

That is, it is a signboard for advertisement that illuminates the light guide plate surface made of transparent acryl or glass made of various types of characters and various shapes (monochromatic or various colors) carved thereon with an electric light (light emitting element).

Conventional lighting signboards are so-called frame illumination systems, in which advertising signatures and drawings are engraved on the backside of a transparent acrylic light guide plate in accordance with the pattern or size of the pattern, and are then focused on an indented display line on which light rays emitted from the light emitting device are carved, However, since the size of the indented carved lines that are carved according to the sizes of various pictures and characters are different on the back of the light guide plate, the light rays reflected from the reflection surface are reflected by the regular reflection In the place where the indented lines are thickly and largely sculpted, the amount of irradiated light is large, so that the light is reflected from the entire surface of the light guide plate. On the contrary, in the portion where the engraved indications are narrow and shallow, So that the beam is at the desired dose The light reflected by the front surface of the light guide plate was reflected in a blurred contrast, and thus there was a problem that the overall sign of the signboard and the letters were not sufficiently illuminated.

Therefore, in order to solve the above-described problems, the present invention has been made to solve the above-mentioned problems by making the light rays irradiated from the reflection surface on the upper side of the light guide plate to be irregularly reflected so that the light rays are uniformly scattered on the back side of the light guide plate where fine engraved minute- So that the signboard for advertisement is entirely large from the front side of the light guide plate, and the light rays are evenly reflected regardless of the depressed marking lines of the small pieces so as to be able to emit more detailed patterns or characters.

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FIG. 1 is a longitudinal sectional view

Fig. 2 is an enlarged cross-sectional view for explaining the refraction and reflection of light by the reflected light of the present invention

FIG. 3 is an enlarged cross-sectional view of a principal part for explaining that light is refracted and reflected by a conventional reflected light

Description of the Related Art [0002]

A: Lighting signboard 1: Light emitting element

2: housing 3: concave /

4: light guide plate 5: indented line

6, 6 ': Fixed rim 7, 7': Fixed groove

8: Reflective surface

The present invention is characterized in that both side fixed protrusions 6 and 6 'are formed so that the light guide plate 4 can be fixed to the lower part of the housing 2 in which several light emitting devices 1 are connected and assembled in series, The light guide plate A is illuminated by the light refracted and reflected by the fixing protrusions 6 and 6 'sandwiched between the fixing grooves 7 and 7' A pattern or letter or the like required on the rear surface 4 'of the light guide plate 4 is cut to form a depressed display line 5 of a different size so that the upper reflective surface 8 of the light guide plate 4 is scratched The light reflected by the smooth reflection surface 8 on the upper side of the light guide plate 4 is caused to undergo regular reflection as shown in FIG. 3, so that the intaglio display lines 5 having different sizes As shown in FIG. 2, the phenomenon that the light rays are blurred as indicated by the dotted line due to the interference of light is irregular The light reflected by the light emitting element 1 is caused to be irregularly reflected by the concave and convex portions 3 formed with scratches on the back surface 4 'of the light guide plate 4, The light is condensed and reflected to the front face of the light guide plate 4 so that various patterns or characters engraved on the back face 4 'of the light guide plate 4 of the illumination signboard A can be brighter and brighter.

The present invention has the irregular scratch-like irregularities 3 formed on the reflecting surface 8 which is reflected on the upper side of the light guide plate 4 so that various patterns engraved on the illuminated signboard A effectively as a fine power source of the light emitting element 1 The power of the light emitting element 1 can be increased effectively to illuminate the intaglio lines 3 of different sizes engraved on the back surface 4 'of the conventional light guide plate 4 in a brighter manner, It is a very effective design that can easily solve the overheating and power loss of the housing 2,

Claims (1)

Even when the irregular scratch-like irregularities 3 are formed on the upper side of the light guide plate 4 made of a transparent acrylic material and the light emitting element 1 which emits light at a low voltage is used, Is formed so as to be able to uniformly reflect the entirety of the depressed display lines (3) of different sizes,