KR101210283B1 - High luminescence side emitting display device - Google Patents

Abstract

An object of the present invention is to provide a side light emitting display device having an improved illuminance distribution by improving light efficiency of a display device installed outdoors. To this end, the frame forming the receiving groove; At least one display panel inserted into the receiving groove of the frame and fixed to the display panel to display and display advertising pattern information on a surface thereof; An LED package module installed in a receiving groove of the frame to irradiate light to a side of the display panel; And an elastic member installed in the receiving groove of the frame to press the LED package module to be in close contact with the side of the display panel. Therefore, there is an advantage that can improve the light efficiency by reducing the occurrence of light loss by close contact with the LED package module.

Description

Side illuminated display device {HIGH LUMINESCENCE SIDE EMITTING DISPLAY DEVICE}

The present invention relates to a side light emitting display device, and more particularly, to a side light emitting display device which improves light distribution by improving light efficiency of a display device installed outdoors.

In general, a display device installed outdoors to provide advertisement information is installed on an outer wall or a street of a building to provide advertisement information.

Such a display device uses natural light during the day and exposes the advertisement information by using a separate light source at night.

A display device using a light source is provided with a frame fixed to an outer wall or a pillar of a building, and a display panel designed with an advertisement or a guide pattern on a front plate coupled to the front of the frame.

In addition, the interior of the frame is provided with a lamp for providing a light source so that the light output from the lamp is irradiated to the display panel, thereby transmitting the advertising information.

However, the conventional display device has a problem in that power consumption is increased by using a fluorescent lamp or an incandescent lamp and a management cost is increased. Accordingly, a display device using a light emitting diode (hereinafter, referred to as an LED) has been proposed in place of a fluorescent lamp or an incandescent lamp.

These LEDs consume low power, which can reduce the maintenance cost of the display device, and also realize various colors of the displayed image, so that the place where the LED is installed is not only an outer wall and a pillar of the building but also a bus stop 1 as shown in FIG. 1. The display device 10 is installed in various places and its utilization is increasing.

As illustrated in FIG. 2, the outdoor display apparatus 10 using the LED according to the related art includes an upper frame 11a, a lower frame 11b, a left frame 11c and a right frame 11d having grooves formed therein, Comprising a plurality of display panels 12 composed of tempered glass and advertising information is displayed, and the LED package module 14 is installed on both sides of the display panel 12 to irradiate red, blue, green light, Advertising information such as letters, logos, plants, animals, and landscapes are engraved on the display panel 12 through a technique such as sand blast.

In the display apparatus 10 according to the related art, when light is emitted from the LED package module 14 installed on both sides of the display panel 12, the emitted light is incident on the display panel 12 to display the display panel 12. Ad information formed on the screen is exposed.

However, the general outdoor display apparatus 10 uses tempered glass as the display panel 12. The tempered glass has a low transmittance, and thus a decrease in the light energy passing through the glass increases, causing the display panel to be close to the LED package module 14. There is a problem that an unbalance of brightness as shown in FIG. 3 occurs in an edge portion of (12) and a central portion of the display panel 12 far from the LED package module 14.

In addition, the display device 10 according to the related art has a red LED package module 14, a blue LED package module 14 ′, and a green LED package module 14 ″ as shown in FIG. 4. ) Is installed, the display panels 12 are installed on one side of each of the LED package modules 14, 14 ', 14 ".

However, the conventional display apparatus 10 has a problem in that the side of the display panel 12 is damaged due to an inconsistent position tolerance when the display panel 12 is assembled with the frame 11c.

In addition, when the display panel 12 flows inside the frame due to the position tolerance, the LED package modules 14 and 14 '14 "are damaged due to the display panel 12 flowing when the component is installed or moved. .

In addition, when the display panel 12 and the LED package modules 14, 14 ′, 14 ″ do not come into close contact with each other due to a position tolerance, the LED package modules 14, 14 ′, 14 ″ are installed apart from each other by a predetermined distance d. There is a problem in that the light emitted from the light is not incident to the display panel 12 all serious loss of light occurs.

In addition, when the display panel 12 and the LED package modules 14, 14 ′, 14 ″ are not in close contact with each other, the light emitted from the LED package modules 14, 14 ′, 14 ″ is incident on the display panel 12. Since the incident angle of is reduced, this causes a problem in that the total reflection area of the light incident on the display panel 12 is reduced.

In addition, when the display panel 12 and the LED package modules 14, 14 ′ and 14 ″ are not in close contact with each other, the optical path, which is a movement distance of light emitted from the LED package modules 14, 14 ′, 14 ″, becomes long. The decrease in light energy occurs due to the light absorption in the display panel, and there is a problem in that an unbalance in brightness is caused by a decrease in the amount of light caused by the decrease in the light energy.

In addition, the optical axis 12a of the display panel 12 and the LED package modules 14, 14 ′, 14 when the display panel 12 and the LED package modules 14, 14 ′, 14 ″ do not come into close contact due to positional tolerances. Due to the deviation of the optical axis 14a of ""

In order to solve this problem, an object of the present invention is to provide a side light emitting display device that improves the light distribution by improving the light efficiency of the display device installed outdoors.

In order to achieve the above object, the present invention provides a side-emitting display device,

A frame forming a receiving groove; At least one display panel inserted into the receiving groove of the frame and fixed to the display panel to display and display advertising pattern information on a surface thereof; An LED package module installed in a receiving groove of the frame to irradiate light to a side of the display panel; An elastic member installed in the receiving groove of the frame to press the LED package module to be in close contact with the side of the display panel; And a lens unit installed between the display panel and the LED package module to refract light incident from the LED package module to totally reflect to the display panel, wherein the lens unit is preferably a Fresnel lens.

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In addition, the side-emitting display device according to the present invention is formed so that the advertising pattern information formed on the surface of the display panel is etched, the density distribution of the etched point is densely formed toward the center of the panel from the edge of the panel It is characterized by.

In addition, the side-emitting display device according to the invention is characterized in that it further comprises a reflective sheet installed on the inner surface of the receiving groove of the frame to reflect the light emitted from the LED package module to be incident to the display panel.

In addition, the display panel according to the present invention is characterized by consisting of any one of glass, acrylic, polycarbonate, polyethylene, polypropylene, preferably tempered glass.

The side-emitting display device according to the present invention has an advantage of improving light efficiency by reducing the occurrence of light loss by bringing the display panel and the LED package module into close contact.

In addition, the side-emitting display device according to the present invention has an advantage of improving the light efficiency to improve the brightness imbalance of the edge portion and the center portion of the display panel.

In addition, the side-emitting display device according to the present invention has the advantage of preventing the display panel from flowing inside the frame to prevent side damage of the display panel and damage to the LED package module.

In addition, the side-emitting display device according to the present invention has the advantage that the light scattering rate is differentiated at the edge portion and the center portion of the display panel to provide a uniform brightness as a whole.

1 is an exemplary view showing a state of use of a general outdoor display device.
Figure 2 is an exploded perspective view showing the configuration of an outdoor display device using the LED according to the prior art.
Figure 3 is an exemplary view showing the illuminance distribution of the outdoor display device using the LED according to the prior art.
4 is a cross-sectional view showing a partial cross section of a configuration in which the outdoor display apparatus shown in FIG. 2 is combined.
5 is an exploded perspective view showing the configuration of an embodiment of a side-emitting display device according to the present invention.
FIG. 6 is a cross-sectional view showing a partial cross section of a configuration in which the side light emitting display device of FIG. 5 is combined; FIG.
7 is a cross-sectional view showing the configuration of another embodiment of a side-emitting display device according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the side-emitting display device according to the present invention.

5 is an exploded perspective view showing a configuration of an embodiment of a side-emitting display device according to the present invention, Figure 6 is a cross-sectional view showing a partial cross-section of the configuration of the side-emitting display device according to FIG.

As shown in FIGS. 5 and 6, the side-emitting display device 100 according to the present invention includes a first frame 110, a second frame 111, a third frame 112, and a fourth frame 113. , A display panel 120, an LED package module 130, a plurality of leaf springs 140, a lens unit 150, a reflective sheet 160, and an etching unit 170.

The first to fourth frames 110, 111, 112, and 113 support the accommodated display panel 120, the display panel 120 and the LED package module 130 having a cross section having a “c” shape therein. ), A leaf spring 140, a lens unit 150, and a receiving groove for accommodating the reflective sheet 160 are formed.

The receiving groove is formed along the length direction of the first to fourth frames 110, 111, 112, and 113, and the thickness of the display panel 120 is inserted so that a portion of the side front end portion of the display panel 120 is inserted and fixed. It is formed in a size corresponding to.

That is, when the display panel 120 is inserted into the receiving groove, the first to fourth frames 110, 111, 112, and 113 are fixed to the side leading end of the display panel by the frame so that the display panel 120 is fixed. To prevent flow.

The display panel 120 is formed of a plate member made of a transparent material that transmits light and is supported by being coupled to the receiving grooves of the first to fourth frames 110, 111, 112, and 113, and the front side of the display panel. Alternatively, various patterns, such as letters and images, may be displayed on the back as advertisement information.

In addition, the display panel 120 may be formed of various patterns through corrosion using a sand blast or a chemical solution to form an irregular surface.

In addition, the display panel 120 is made of a transparent material that can transmit light, made of any one material of glass, acrylic, polycarbonate, polyethylene, polypropylene, preferably tempered glass.

The LED package module 130 has a plurality of LEDs arranged at regular intervals on the printed circuit board, the LED package module 130 is at least one of the first to fourth frames (110, 111, 112 and 113). Is installed in the frame of the light emitted from the arranged LED is to be incident through the side of the display panel 120.

The LED may be made of a monochromatic LED that outputs any one color of red, blue, and green, or LEDs emitting at least two or more different colors may be arranged, and the LEDs emitting red, blue, and green may be integrally formed. It may be formed.

In addition, the size of the LED package module 130 is formed corresponding to the size of the receiving groove of the frame to prevent the LED package module 130 from flowing in the receiving groove of the frame.

Although not shown, the side-emitting display apparatus 100 includes a controller (not shown) that outputs a control signal for controlling an on / off operation of the side-emitting display apparatus 100, wherein the controller is an LED package. It may be configured to include in the module 130.

The leaf spring 140 is installed in the receiving groove of the frame as an elastic member, the cross-section is "S" shaped, one side is in close contact with the receiving groove of the frame, the other side and the bottom surface of the LED package module 130 It is in close contact with the LED package module 130 by providing an elastic force to be in close contact with the side of the display panel 120 is pressed.

That is, the leaf spring 140 is in close contact with the LED package module 130 and the display panel 120 to minimize the distance so that most of the light emitted from the LED package module 130 is incident on the display panel 120. do.

In addition, the leaf spring 140 is in close contact with the LED package module 130 to minimize the distance between the display panel 120, the movement distance (light path) of the light incident on the display panel 120 is short In this case, the reduction of the light energy is made small, so that the light efficiency is improved.

In addition, the leaf spring 140 to minimize the distance between the LED package module 130 and the display panel 120 and prevent the flow of the display panel 120 and the LED package module 130, the display device ( The optical axis of the display panel 120 and the optical axis of the LED package module 130 are prevented from being distorted when the 100 is moved or installed, thereby preventing light loss from occurring.

The lens unit 150 has a planar exit surface closely contacting the display panel 120, and the projecting entrance surface closely adheres to the LED package module 130 so that the display panel 120 and the LED package module ( 130) is installed between.

In addition, the incident surface of the lens unit 150 is totally reflected by allowing the light emitted from the LED package module 130 to be incident beyond a predetermined threshold angle, so that most of the light is emitted through the exit surface of the lens unit 150. It is emitted to the display panel 120 so that the light intensity of the center portion of the display panel 120 is increased by improving the straightness of the light.

In addition, although the distance between the display panel 120 and the LED package module 130 may be minimized and the lens unit 150 may use a Fresnel lens to improve the condensing degree, the lens unit 150 Lenses that can minimize the thickness and increase the light condensation of light emitted from the LED package module 130 are all available.

The reflective sheet 160 is installed on the inner surface of the receiving groove of the frame to reflect the light emitted from the LED package module 130 to be incident on the display panel 120, thereby increasing the light efficiency.

The etching unit 170 is a portion etched (etched) so that the light emitted from the LED package module 130 is scattered on the surface of the display panel 120 is printed after the various patterns are printed to form a three-dimensional impression The part is formed through sand blasting or corrosion with chemical solution.

The sand blasting process is to process the glass surface by mixing the abrasive in the compressed air by spraying through a sand blast gun, and processing with the chemical solution, for example, the surface of the glass through hydrogen fluoride To corrode and operate.

In addition, the etching unit 170 is different from the density of the points etched per unit area formed in the edge portion and the central portion of the display panel 120 so that the brightness is uniformly distributed in the entire portion of the display panel 120 Is formed.

That is, the density of the points etched at the edge of the display panel 120 is low, and the density of the points etched at the center of the display panel 120 is denser than the edge.

Therefore, since the light energy of the light incident on the side of the display panel 120 has a large value at the edge of the display panel 120 and includes a light energy at a central portion that is somewhat lower than that of the edge, the display panel ( The density of the scattering points near the edge of the 120 is lowered to prevent the scattering rate of the light energy-rich light from increasing, and the density of the dots formed by etching in the central portion of the display panel 120 is increased. By increasing the scattering rate of light, the brightness of the edge portion and the central portion of the display panel 120 is distributed relatively uniformly.

7 is a cross-sectional view showing another embodiment of a side-emitting display device according to the present invention.

As illustrated in FIG. 7, the side light emitting display device 200 includes a frame 210, an accommodation groove 220 formed inside the frame 210, and a plurality of dividers that divide the accommodation groove 220. 221, 221 ′, a plurality of display panels 230, a red LED package module 240, a blue LED package module 240 ′, a green LED package module 240 ″, a leaf spring 250 And the lens unit 260 and the reflective sheet 270.

In the frame 210, a receiving groove 220 having a size corresponding to the thickness of the display panel 230 is partitioned through the division parts 221 and 221 ′.

Display panels 230 are respectively installed in the accommodation grooves 220 partitioned through the divisions 221 and 221 ′.

That is, when the display panel 230 is inserted into the receiving groove 220, the frame 210, the receiving groove 220, and the dividing portions 221 and 221 ′ may be connected to the frame 210 and the dividing portions 221 and 221 ′. The side front end of the display panel 230 is fixed to prevent the display panel 230 from flowing.

The display panel 230 is a plate member made of a transparent material that transmits light to form various patterns such as letters and images as advertisement information on the front or rear of the display panel, and the display panel 230 is irregular. Various patterns can be formed through the sand blast to form the surface.

In addition, the display panel 230 is made of a transparent material that can transmit light, made of any one material of glass, acrylic, polycarbonate, polyethylene, polypropylene, preferably tempered glass.

The red LED package module 240, the blue LED package module 240 ′, and the green LED package module 240 ″ are formed of monochromatic LEDs that output one color in the present embodiment, but are not limited thereto. LEDs emitting other colors may be arranged.

The leaf spring 250 is installed in the receiving groove 220 of the frame 210 as an elastic member, the cross-section is "S" shaped one side is in close contact with the receiving groove 220 of the frame, the other side is red And blue and green LED package modules 240, 240 ′ and 240 ″, respectively, so as to be in close contact with the bottom surfaces of the display panels 230. Pressurized by an elastic force so as to be in close contact with each other to minimize the distance between the red, blue, and green LED package modules 240, 240 ′, and 240 ″ and the display panel 230.

Therefore, the leaf spring 250 is in close contact with the red, blue, and green LED package modules 240, 240 ′ and 240 ″ so that the distance between the display panel 230 and the display panel 230 is minimized. A large portion of the light emitted from the light sources 240, 240 ′ and 240 ″ may be incident on the display panel 230.

In addition, the leaf spring 250 is incident to the display panel 230 by bringing the distance between the red, blue, and green LED package modules 240, 240 ′, and 240 ″ into close contact with the display panel 230 to minimize the distance. The shorter the moving distance (light path) of the light is, the smaller the reduction of the light energy is, so that the light efficiency is improved.

In addition, the leaf spring 250 allows the distance between the red, blue and green LED package modules 240, 240 ′ and 240 ″ and the display panel 230 to be minimized, and the display panel 230 and the red, blue and By preventing the flow of the green LED package modules 240, 240 'and 240 ", the optical axis of the display panel 230 and the optical axes of the red, blue and green LED package modules 240, 240' and 240" are distorted. To prevent light loss from occurring.

The lens unit 260 has a planar exit surface closely contacting the display panel 230, and a projecting entrance surface closely adheres to the red, blue, and green LED package modules 240, 240 ′, and 240 ″, respectively. The display panel 230 is installed between the red, blue, and green LED package modules 240, 240 ′, and 240 ″.

In addition, the incident surface of the lens unit 260 is totally reflected by allowing the light emitted from the red, blue, and green LED package modules 240, 240 ', and 240 "to be incident beyond a predetermined threshold angle. Most of the light is emitted to the display panel 230 through the emission surface of 260 to improve the straightness of the light so that the central illuminance value of the display panel 230 is increased.

In addition, the lens unit 260 may minimize the distance between the display panel 230 and the red, blue, and green LED package modules 240, 240 ′, and 240 ″, and have a Fresnel to improve condensation. Although it is preferable that the lens be used, all the lenses capable of minimizing the distance between the display panel and the LED package module and improving the condensing degree can be used.

The reflective sheet 270 is installed in the inner surface of the receiving groove 220 of the frame and reflects the light emitted from the red, blue, and green LED package modules 240, 240 ′, and 240 ″ to the display panel 230. Allow light incident to be increased.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It can be understood that

100: display device 110: first frame
111: second frame 112: third frame
113: fourth frame 120: display panel
130: LED package module 140: leaf spring
150: lens unit 160: reflective sheet
170: etching part 200: display device
210: frame 220: receiving groove
221, 221 ': Division 230: Display panel
240: red LED package module 240 ': blue LED package module
240 ": Green LED Package Module 250: Leaf Spring
260: lens unit 270: reflective sheet

Claims (6)

A side light emitting display device,
A frame forming a receiving groove;
At least one display panel inserted into the receiving groove of the frame and fixed to the display panel to display and display advertising pattern information on a surface thereof;
An LED package module installed in a receiving groove of the frame to irradiate light to a side of the display panel;
An elastic member installed in the receiving groove of the frame to press the LED package module to be in close contact with the side of the display panel; And
It is installed between the display panel and the LED package module includes a lens unit for refracting the light incident from the LED package module to be totally reflected to the display panel,
And the lens unit is a Fresnel lens. delete delete The method of claim 1, wherein
Advertising pattern information formed on the surface of the display panel is formed by etching, so that the density distribution of the etched point is densely formed in the direction of the center of the panel from the edge of the panel. The method according to claim 1 or 4,
And a reflective sheet installed on an inner surface of the accommodating groove of the frame to reflect light emitted from the LED package module to be incident on the display panel. The method of claim 5, wherein
The display panel is a light emitting display device, characterized in that made of any one of glass, acrylic, polycarbonate, polyethylene, polypropylene.

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