KR20200109473A - Edge-type surface light source bi-directional marker plate - Google Patents

Abstract

The present invention relates to a bidirectional signboard with an edge-type surface light source, which maximizes visibility of characters, symbols, and the like marked on the bidirectional signboard by light emitted from a light source to enable a user, who views the bidirectional signboard, to clearly recognize the characters, the symbols, and the like at a distance. According to the present invention, the bidirectional signboard with the edge-type surface light source comprises: a concentrated emission unit concentratedly emitting light emitted from a light scattering pattern of a light guide plate on a character or direction display portion formed on first and second image layers of the bidirectional signboard, or first and second light scattering layers and first and second background screen layers, on which characters, numbers, pictures, and photographs are placed, to increase visibility of the character or direction display portion, or a character, number, picture, and photograph side; and a transparency reducing part disposed at a position, except for the width of the character or direction display portion, or the characters, numbers, pictures, and photographs formed on the first and second image layers, in the light guide plate to reduce penetration of the light emitted from the light source. Accordingly, the bidirectional signboard can be easily identified at a distance by a vehicle or a pedestrian, thereby providing an effect of enabling the vehicle or the pedestrian to easily move to a correct position.

Description

Edge-type surface light source bi-directional marker plate

The present invention relates to an edge type surface light source two-way sign, and more particularly, by maximizing the visibility of characters or symbols displayed on a two-way sign by a light source irradiated from a light source, the viewer of the two-way sign can be It relates to an edge-type surface light source two-way sign that can be clearly recognized.

In general, signs are facilities installed to allow vehicles or pedestrians in operation to easily identify a corresponding road, and are installed to be suspended above the road in a conventional manner or mounted on the roads on both sides.

Conventional signs have a function of self-irradiating light recently in a way that reflects by light irradiated from the headlamp of a vehicle.

In the above, the light source provided inside the sign uses an LED light having a long life, high energy efficiency and eco-friendly characteristics.

Surface light source devices used in LED lighting are classified into direct type and edge type according to the location of the light source.

Here, the direct type has an advantage in controlling brightness and color by arranging the light source on the rear surface of the light guide plate and irradiating light to the front. And the edge type is a method in which the light emitted from the light source is irradiated to the front using the refraction and reflection of the light guide plate by arranging the light source on the side of the light guide plate.The thickness is thinner and lighter using fewer LEDs than the direct type. Due to its low power consumption and low driving voltage, it is widely used in various devices.

Meanwhile, in recent years, a bidirectional surface light source device capable of displaying the same image or different images in both directions by breaking away from a device that emits a light source in only one direction has been developed, and use and research are being actively conducted.

As described above, the prior art to which the edge type is applied is applied to the two-sided surface light source, as published in Korean Patent Publication No. 10-0787552 (hereinafter referred to as'prior art document 1'), by a light emitting means that is lit in both directions. A technology such as a signboard for advertisements has been proposed that provides a more splendid and beautiful decoration by increasing the saturation and brightness of the color printing unit through the light-transmitting frame along with the backlight effect of the advertisement.

In addition, as published in Japanese Unexamined Patent Application Publication No. 2007-141735 (hereinafter referred to as'prior art document 2'), even if the size of the light guide plate is increased, the light diffusing material is uniformly applied to the light guide plate so that the light guide plate can be made thinner and excellent in appearance. A technique such as a double-sided light emitting panel including a plurality of plasma lamps has been proposed in which a light diffusion layer is mixed and uniformly disposed on both surfaces of a transparent substrate and includes a plurality of plasma lamps along the lengthwise direction of the side sectional surface of the light guide plate.

In addition, by attaching a reflective sheet to the pattern processing surface in Republic of Korea Utility Model No. 20-0444788 (hereinafter referred to as'prior technical document 3') to emit light from the light source only to the front surface, the reflective sheet is omitted from the light guide plate to the light guide plate. A technique such as a double-sided signboard using a light guide plate that radiates from both sides so as to radiate to the rear as well as the front of the incident light has been proposed.

In addition, as published in Korean Registered Patent Publication No. 10-1118096 (hereinafter referred to as'prior technical document 4'), as the display content is printed directly on the light guide plate or reflector, the manufacturing process is reduced and productivity is greatly improved. In addition, a technology such as a double-sided display panel that can provide a beautiful design while maximizing the display effect at night when used as a billboard, road sign, or other information sign has been proposed as a part of the light is provided to the rear.

In addition, as published in Korean Patent Publication No. 10-1466546 (hereinafter referred to as'prior technical document 5'), which is the registration right of the present applicant, the product is lightweight and thin while reducing the thickness of the product and high light luminance and light efficiency. Techniques such as an edge-type surface light source and a two-way sign that can illuminate a double-sided screen portion using a light guide plate having a strong diffusion pattern on the upper and lower surfaces and a light source disposed on the side have also been proposed.

Korean Patent Publication No. 10-0787552 Japanese Unexamined Patent Application Publication No. 2007-141735 Republic of Korea Utility Model Registration No. 20-0444788 Korean Patent Publication No. 10-1118096 Republic of Korea Patent Publication No. 10-1466546

However, prior art documents 1 to 5 have the advantage that the light source irradiated from the light source is uniformly irradiated on both sides, but due to the uniform irradiation, it is spread to the entire sign board, panel, signboard, sign, etc. Characters or symbols are not conspicuous, and it has the disadvantage of lowering visibility at a distance.

In order to solve the problems of the prior art as described above, the present invention is an improvement of the prior art document 5, which is the pre-registration right of the present application, and the specific technical solution is a letter or a letter marked on a two-way sign by a light source irradiated from the light source. It is to provide an edge-type surface light source two-way sign that maximizes the visibility of the sign, etc. so that the viewer can clearly recognize it from a long distance.

Another specific problem of the present invention is to allow the irradiated light to be irradiated as far as possible without an additional light source according to the height, width or length of the two-way sign.

A specific technical solution of the present invention for solving the above technical problem is that the light diffusion pattern is integrally molded through an injection mold on the entire upper and lower surfaces, and a light guide plate made of a light-transmitting material formed in a pattern or style that repeats regularly or irregularly. And, a light source arranged as an LED on the side of the light guide plate, each of first and second light diffusion layers disposed on the upper and lower surfaces of the light guide plate to diffuse and emit light, and each of the first and second light diffusion layers Each of the first and second desktop layers and the first and second desktop layers composed of a reflective sheet made of an adhesive or an adhesive sheet or arranged as a film so as to transmit and retroreflect light on the surface A character or direction indication part is opened to transmit and reflect light on the surface of the screen, or at least one shape among letters, numbers, pictures, and photos is cut and pasted, or a special ink is used for the background excluding the character part. Thus, each of the first and second image layers printed by a silk printing method or formed of a film, an inner cover fixing the substrate on which the light source is installed from the side of the light guide plate, and a first disposed on the upper and lower surfaces of the light guide plate ,A two-way sign with an edge-type surface light source including a fixed frame for simultaneously fixing the ,2 light diffusion layer, the first and second desktop layers, and the first and second image layers from the side, wherein a character formed on the first and second image layers or The direction indication part, or the first and second light diffusion layers and the first and second desktop layers on which letters, numbers, pictures, and photos are located, receive the light irradiated from the light diffusion pattern of the light guide plate, or , Each intensive investigation unit that is intensively irradiated to increase visibility to the side of numbers, pictures, and photos; And a light transmission inhibiting unit provided on the light guide plate to inhibit the transmission of light irradiated from the light source at a position other than the width at which letters, numbers, pictures, and photos are located, or at a position other than the width at which letters, numbers, pictures, and photos are located. Includes;

The concentrated irradiation unit is gradually emitted from a wide width at which light is incident toward the first and second image layers at positions corresponding to the respective surfaces of the first and second light diffusion layers and the first and second desktop layers on the side where the light guide plate is located. It consists of a plurality of concentrated irradiation grooves formed in a narrow width.

The light transmission inhibiting portion may be any one of a plurality of through-holes penetrating from the upper surface to the lower surface of the light guide plate formed at equal intervals or irregular intervals.

The light guide plate further includes a light extension part for further increasing a distance to which light irradiated from the light source can reach, wherein the light extension part divides the light guide plate and interposed therebetween to further increase the distance to which light reaches the light guide plate. A condensing lens unit is provided.

The condensing lens unit is either a condensing lens having a width through which light of at least two or more LEDs passes simultaneously or a condensing lens corresponding to each of the arrayed LEDs of the light source is formed.

The present invention maximizes the visibility of characters or symbols displayed on a two-way sign by a light source irradiated from a light source so that a person who sees the two-way sign can clearly recognize even from a long distance, so that a vehicle or a pedestrian can identify it from a long distance. It is easy and has the effect of smoothly moving to an accurate position.

In addition, according to the height, width or length of the two-way sign, the irradiated light can be irradiated to a distance as far as possible without an additional light source, so that a simple structure can be constructed and the light source efficiency can be maximized.

1 is a partial exploded view and a combined cross-sectional view for explaining a first embodiment of the present invention,
2 is a partial exploded view for explaining a second embodiment of the present invention;
3 is a partial exploded view for explaining a third embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, and the present invention is not limited or limited by the embodiments.

1 is a partial exploded view and a combined cross-sectional view for explaining a first embodiment of the present invention.

As shown, a conventional edge-type surface light source two-way sign means that light sources arranged in LEDs are arranged on the side of the light guide plate, and the light emitted from the light source is the same or different images in both directions using the refraction and reflection of the light guide plate. It is a method of irradiating to be able to display, and has a condition that the thickness is thinner and lighter, and has low power consumption and low driving voltage by using fewer LEDs.

Accordingly, it is widely applied and used not only in signs but also in various devices.

In the above, the specific technical configuration of the edge-type surface light source double-sided sign 100 is published in Prior Art Document 5 previously registered by the present applicant, as described in the background technology of the invention, and light diffusion to the upper and lower surfaces. The light guide plate 110, the light source 120, the first and second light diffusion layers 130 and 130A, the first and second desktop layers 140 and 140A, the first and second images on which the pattern ()() is formed It has a technical configuration including a layer 150 (150A), an inner cover 160 and a fixed frame 170.

Since each of the above-described technical configurations are described in detail in Prior Art Document 5, specific technical configurations are omitted.

However, the biggest drawback of such a typical edge-type surface light source bidirectional sign is that it spreads to the entire sign board, panel, signboard, sign, etc. due to uniform irradiation in both directions, so that characters or symbols to be displayed do not stand out. Rather, it has the disadvantage of lowering visibility at a long distance.

The present invention is a complete improvement of Prior Art Document 5, which is the pre-registration right of the present application, and maximizes the visibility of characters or symbols marked on a two-way sign by a light source irradiated from a light source to enable viewers to see a two-way sign at a long distance. It is to make it clearly recognizable.

A technical configuration capable of maximizing visibility for characters or symbols displayed on a two-way sign according to the present invention is as follows.

In the above, the first and second light diffusion layers 130 and 130A and the first and second light diffusion layers 130 and 130A on which letters or direction indication portions formed on the first and second image layers 150 and 150A, or letters, numbers, pictures, and photos are located. 1,2 The light irradiated from the light diffusion patterns 110A and 110B of the light guide plate 110 on the desktop layer 140 and 140A provides visibility to the letter or direction indication portion, or to letters, numbers, pictures, and photos. It includes each concentrated irradiation unit 10 to be concentrated to increase the irradiation.

In other words, the first and second image layers 150 and 150A are attached to the front surface of the first and second desktop layers 140 and 140A to form images for displaying various guides or road information. , Since the light passing through the first and second light diffusion layers 130 and 130A and the first and second desktop layers 140 and 140A does not receive light directly from the light guide plate 110, the illuminance of light Can be weak.

Accordingly, various images formed on the first and second image layers may appear blurry, thereby reducing visibility, but such problems may be solved by the intensive irradiation unit of the present invention.

In the above, the concentrated irradiation unit 10 corresponds to the respective surfaces of the first and second light diffusion layers 130 and 130A and the first and second desktop layers 140 and 140A on the side where the light guide plate 110 is positioned. It is composed of a plurality of concentrated irradiation grooves 12 formed in a narrow width gradually emitted from a wide width in which light is incident on the first and second image layers 150 and 150A. The concentrated irradiation groove may have a conventional semicircle or a rectangular semicircle shape having a wide incident side and a narrow emission side.

That is, the light passing through the light guide plate enters the wide width of the intensive irradiation groove formed in the first and second light diffusion layers, and then exits with a narrow width, and enters the wide width of the intensive irradiation groove formed in the first and second desktop layers. It is then emitted in a narrow width, so that various image parts formed on the first and second image layers can be irradiated with even higher illumination.

As a result, visibility can be maximized by illuminating the various image parts of the first and second image layers formed on the outermost side more brightly, and this allows anyone to easily identify an edge-type surface light source two-way sign from a long distance without the support of an additional light source. I have the conditions to do it.

Accordingly, it is possible to smoothly move vehicles or pedestrians from a distance in the correct direction due to excellent discrimination power.

In addition, the second embodiment of the present invention for maximizing visibility has a technical configuration as shown in FIG. 2.

In other words, the light guide plate 110 irradiates from a light source at a location other than the width at which the letters or direction indication portions formed on the first and second image layers 150 and 150A, or letters, numbers, pictures, and photos are located. It includes; a light transmission inhibiting unit 20 provided to inhibit the transmission of light.

In the above, the light transmission inhibiting portion 20 is any one of a plurality of through holes 22 penetrating from the upper surface to the lower surface of the light guide plate 110 formed at equal intervals or irregular intervals.

In other words, the light irradiated from the light source is irradiated in both directions through the light guide plate, and at this time, the light irradiated from each through hole, which is a light transmission inhibiting portion formed in the light guide plate, is cut off, so that the light transmission inhibiting portion in which each through hole is formed is relatively dark. Is formed.

On the other hand, in the part where the through hole, which is the light transmission inhibiting part, is not formed, the light illuminance is maintained as it is, so that the part where various images are located can secure high visibility, thereby maximizing the visibility, which is an edge-type surface light source two-way sign. It has a condition that anyone can easily identify the device from a long distance without the support of an additional light source.

3 is a partial exploded view for explaining a third embodiment of the present invention.

As shown, in the above configuration, when the light irradiated from the light source is further away, that is, when the height of the two-way sign is high, or when the length is long, or when the width is wide, a technical configuration diagram in which light can reach without an additional light source to provide.

The light guide plate 110 further includes a light extension part 30 for further increasing the distance to which light irradiated from the light source can reach, wherein the light extension part 30 divides the light guide plate 110 and divides the A conventional condensing lens unit 32 interposed therebetween is provided to further increase the distance through which light reaches.

In the above, the condensing lens unit 32 is formed in a conventional strip shape having a width corresponding to the thickness of the light guide plate 110 and is interposed between the divided light guide plates, and the condensing lens unit 32 is arranged in a light source Each condensing lens 32A corresponding to each of the LEDs is formed or a condensing lens 32A having a width through which at least two or more LED lights pass simultaneously is formed.

In other words, since signs are manufactured in various sizes according to use or function, conditions for installing light sources according to variations in size are difficult.

Accordingly, the light extension unit of the present invention allows the light to reach as far as possible even by a light source provided on the side, regardless of the size of the sign, so that light can be evenly transmitted to the entire sign without an additional light source.

Therefore, by transmitting light to a sign of the same size to a relatively long distance compared to the same light source, the efficiency of the light source can be further increased without an additional light source.

10: intensive investigation unit 12: intensive investigation home
20: light transmission inhibiting portion 22: through hole
30: light extension part 32: condensing lens part
32A: condensing lens
100: edge type surface light source two-way sign
110: light guide plate 110A, 110B: light diffusion pattern
120: light source 130: first light diffusion layer
130A: second light diffusion layer 140: first desktop layer
140A: second desktop layer 150: first image layer
150A: second image layer 160: inner cover
170: fixed frame

Claims (5)

The light diffusion pattern is integrally molded on the entire upper and lower surfaces through an injection mold, and a light guide plate made of a light-transmitting material formed in a pattern or style that repeats regularly or irregularly, and a light source arranged and arranged with LEDs on the side of the light guide plate, and the Each of the first and second light diffusion layers disposed on the upper and lower surfaces of the light guide plate to diffuse and emit light, and an adhesive or adhesive sheet to transmit and retroreflect light on each surface of the first and second light diffusion layers. Each of the first and second desktop layers composed of a reflective sheet or arranged as a film, and a character or direction indicating part to transmit and retroreflect light on the surface of the first and second desktop layers Each of these openings, or at least one shape from among letters, numbers, pictures, and photos, is cut and pasted, or the background excluding the character part is printed by silk printing using special ink, or composed of a film and arranged. First and second image layers, inner covers for fixing the substrate on which the light source is installed from the side of the light guide plate, and first and second light diffusion layers disposed on the upper and lower surfaces of the light guide plate, first and second desktop layers, first and second As an edge-type surface light source two-way sign including a fixed frame that simultaneously fixes the image layer from the side,
The first and second light diffusion layers and the first and second desktop layers in which letters or direction indications formed on the first and second image layers, or letters, numbers, pictures, and photos are located are irradiated from the light diffusion pattern of the light guide plate. Each concentrated irradiation unit is irradiated intensively so that the light is irradiated to the character or direction indication portion, or the character, number, picture, photo side to increase visibility; And
A light transmission inhibiting unit provided on the light guide plate to inhibit the transmission of light irradiated from a light source at a location other than a width at which letters, numbers, pictures, and photos are located, or at a location other than a width at which letters or directions are formed on the first and second image layers; Edge-type surface light source two-way sign comprising a. In claim 1,
The concentrated irradiation unit is gradually emitted from a wide width at which light is incident toward the first and second image layers at positions corresponding to the respective surfaces of the first and second light diffusion layers and the first and second desktop layers on the side where the light guide plate is located. Edge-type surface light source two-way sign consisting of a plurality of concentrated irradiation grooves formed in a narrow width In claim 1,
The light-transmitting inhibiting portion is an edge-type surface light source two-way sign in which a plurality of through holes penetrating from an upper surface to a lower surface of the light guide plate are formed at equal intervals or irregular intervals. The method according to any one of claims 1 to 3,
The light guide plate further includes a light extension part for further increasing a distance to which light irradiated from the light source can reach, wherein the light extension part divides the light guide plate and interposed therebetween to further increase the distance to which light reaches the light guide plate. An edge-type surface light source two-way sign on which a condensing lens unit is provided. In claim 4,
The condensing lens unit is either an edge type surface light source two-way sign in which each condensing lens corresponding to each of the arranged LEDs of the light source is formed or a condensing lens having a width through which at least two or more LED lights pass simultaneously.

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