KR100777709B1 - Picture frame having led lighting - Google Patents

Abstract

A picture frame having LED lightings is provided to improve beauty sensation of exhibits and to minimize power consumption by combining an LED and the picture frame, and to prevent damage of the exhibits by heat by using the LED as a lighting device. A picture frame having LED lightings includes: a frame(10) forming an outline of the picture frame; plural LED lightings used as a light source by being attached to the inside of the frame; a light guide plate forming the center of the picture frame with a certain thickness so as to radiate a light radiated from the LED lightings to the front side uniformly; and a sheet(30) positioned on the front of the light guide plate, and expressing exhibits to the outside. The frame comprises a front plate part, an outside plate part, a rear plate part, and an inside plate part.

Description

LED Frame Photo Frames {Picture Frame Having LED Lighting}

1 is a schematic perspective view of an LED lighting picture frame according to the present invention.

2 is a front view of the LED lighting picture frame according to the present invention.

3 is a rear view of the LED lighting picture frame according to the present invention.

4 is a partial cross-sectional view of the LED lighting picture frame according to the present invention.

5 is a partial perspective view of a frame of the LED lighting picture frame according to the present invention.

Figure 6 is a perspective view showing the arrangement of the LED of the LED lighting picture frame according to the present invention.

7 is an explanatory diagram for explaining the relationship between the front plate portion and the LED of the frame according to the present invention.

8 and 9 are circuit configuration diagrams of the LED light driving device of the LED lighting picture frame according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1: LED lighting picture frame according to the present invention

10: frame 11: front panel

12: outer plate portion 13: thick plate portion

14: inner plate portion 20: light guide plate

30: sheet 40: LED, etc.

50: double sided tape 60: PCB (printed circuit board)

The present invention relates to an LED lighting picture frame, and more particularly, LED lighting that can increase the aesthetics of exhibits and minimize power consumption by using LEDs having low power and low heat dissipation as lighting device of the picture frame. It's about picture frames.

Generally, picture frames are used in many places for the purpose of protecting the damage of the exhibits and increasing the aesthetics of the exhibits, from small pictures on the desk to large works of art in museums or galleries.

However, to date, the picture frame mainly meets the purpose of protection of the exhibits, but it has been insufficient to improve the aesthetics of the exhibits. In other words, the aesthetics of the frame is the result of enhancing the aesthetics of the frame rather than the aesthetics of the exhibit itself.

In the case of the exhibits, it is possible to show various images artistically depending on the brightness of the exhibits. By adjusting the brightness, one work of art can be seen as dozens of works of art.

However, if an existing incandescent lamp or a fluorescent lamp is used to control the brightness of the exhibit, damage from the exhibit is inevitable due to the heat from the incandescent lamp or the fluorescent lamp. In addition, conventional incandescent and fluorescent lamps have a short lifespan and high power consumption, and thus have a disadvantage of high maintenance costs.

On the other hand, LED (LED) is a semiconductor device has the advantage of showing high efficiency with little power and very little heat dissipation. Because of these advantages, research is being actively conducted to use LED in the existing lighting equipment that used fluorescent lamps or incandescent lamps.

The present invention is to overcome the above-mentioned conventional problems, an object of the present invention is to provide an LED lighting picture frame that can increase the aesthetics of the exhibit by minimizing the power consumption while combining the LED and the picture frame as a lighting device. will be.

Another object of the present invention is to provide an LED lighting picture frame which can prevent damage to the exhibits by heat by using the LED as the lighting device.

Still another object of the present invention is to provide an LED lighting picture frame which can display an exhibit more beautifully according to the surrounding situation by having an illumination sensor that automatically adjusts the illumination and color change according to the ambient brightness of the picture frame.

Still another object of the present invention is to provide an LED lighting frame that can not only prevent the LED from being damaged by supplying a constant current to the LED or the like, but also allow the LED to operate normally even when the user reverses the polarity of the supply voltage.

In order to achieve the above object, the LED lighting picture frame according to the present invention is a frame for displaying an exhibition, the frame forming the outline of the picture frame, the LED attached to the inner surface of the frame and used as a light source, And a light guide plate having a predetermined thickness to form a center of the frame so that the light emitted from the LED passes and uniformly emits light toward the front side, and a sheet on which the display is exposed to the outside.

Here, the frame may include a front plate portion covering a part of the edge of the sheet, an outer plate portion extending rearward from an outer end of the front plate portion, and a thick plate portion extending from a lower end of the outer plate portion to a light guide plate therein; Preferably, the inner plate portion extends from the inner end of the rear plate portion to the lower portion of the light guide plate.

In addition, it is preferable that a plurality of LEDs and the like are formed on the PCB at a predetermined distance from the inner upper portion of the outer plate portion through a double-sided tape along a circumferential length.

In addition, it is preferable to further include a color changing device or an illuminance sensor for automatically adjusting the illuminance and color change according to the ambient brightness.

In addition, it is preferable that a plurality of mounting holes are formed in the rear plate portion of the frame along the length of the square ring shape so that the mounting plate is easily mounted on the wall or the mounting panel. Since the light guide plate fixing hole is formed, the light guide plate having the rectangular plate shape is fixed to the rear side.

In addition, it is preferable to form a diamond pattern layer on the bottom surface of the light guide plate to promote scattering of light received from the LED or the like.

In addition, the sheet is preferably a transparent or translucent film, an acrylic plate or paper.

In addition, the inner length (F) toward the center of the frame of the front plate portion of the frame is preferably expressed by the following equation.

(Where t is the thickness of the side plate portion of the frame, h is the thickness of the entire LED light, d is the spacing of the plurality of LED lights, and θ is the viewing angle of each LED light)

In addition, a driving device such as an LED is electrically connected to the PCB board on which the plurality of LEDs are installed, and the driving device includes a constant current supply unit configured to supply a constant current so that an overcurrent is not supplied to the LED, or regulating integrated. It is preferable that an overcurrent control unit having a circuit is configured.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

1 is a schematic perspective view of an LED lighting picture frame according to the present invention, Figure 2 is a front view of the LED lighting picture frame according to the present invention, Figure 3 is a rear view of the LED lighting picture frame according to the present invention, Figure 4 is the present invention 5 is a partial cross-sectional view of the frame of the LED lighting frame according to the present invention, Figure 6 is a perspective view showing the arrangement of the LED lights of the LED lighting frame according to the present invention, for convenience Let's explain.

As shown, the LED lighting picture frame 1 according to the present invention, in a picture frame for displaying an exhibit, a frame 10 forming an outer housing of the picture frame, attached to the inner surface of the frame 10 and used as a light source At least one LED lamp 40 to be formed, the light guide plate 20 to form a central portion of the frame to pass the light emitted from the LED light 40 to the front side uniformly, and the front of the light guide plate 20 Exhibit photo is made of a sheet 20 is displayed to the outside.

Here, the material of the ring-shaped frame 10 is preferably formed of a metal, but may use a resin or a solid wood to give an aesthetic sense, it does not limit the material in the present invention.

In addition, the frame 10 not only prevents the light emitted from the LED 40 which is actually used as the light source, but also serves to inject the light well into the light guide plate 20.

In addition, as shown in FIG. 5, the frame 10 includes a front plate part 11 that covers a part of the edge circumference of the upper surface of the actual output sheet 20 of the exhibit, and a rear side at an outer end of the front plate part 11. The outer side plate part 12 extended to the (lower side), the rear plate part 13 extending by the distance from the lower end of the outer side plate part 12 to the light guide plate 10 inside thereof, and the inner end of the rear plate part 13. The inner plate portion 14 is formed to extend to the lower side of the light guide plate 20.

Here, a plurality of mounting holes 13-1 are formed in the rear plate portion 13 of the frame 10 along the length of the square ring shape, and the LED lighting picture frame 1 according to the present invention is placed on a wall or a mounting panel. It can be easily mounted through the fixing means, a plurality of light guide plate fixing holes (14-1) are formed in the inner plate portion 14 of the frame 10 along the ring-shaped length is inverse "" The light guide plate 20 having a substantially rectangular plate shape can be fixed to the frame 10 by using the “shaped fixing bracket 70”.

 In addition, a plurality of LED lamps (40) are provided on the inner upper portion of the outer plate portion 12 in the space formed by the front plate portion 11, the outer plate portion 12, the rear plate portion 13, and the inner plate portion 14 of the frame. ) Is attached via the double-sided tape 50. In the illustrated example, the state of attachment by the double-sided tape is shown, but the attachment means is not limited in the present invention.

As the LED light 40 used as the light source, as shown in Figure 6, a plurality of spaced apart a predetermined distance through the double-sided tape 50 along the inner length of the outer plate portion 12 of the rectangular ring shape is formed It is. Here, the plurality of LED lamps 40 are fixed on the printed circuit board (PCB) 60, and are connected to the power by a power supply line (not shown). LED power connection line 61 is composed of a wire for supplying power from the power supply line (not shown) to the plurality of LED lights (40).

In addition, a driving device (not shown) for driving the LED lamp 40 may be electrically connected to the power supply line to control the blinking and the sequential blinking as necessary. It is equipped with a color changing device or an illuminance sensor (not shown) that automatically adjusts illuminance and color change according to the surrounding brightness so that the exhibits can be displayed more beautifully according to the surrounding situation.

In addition, in the illustrated example, a plurality of LED lamps 40 are spaced apart by a predetermined distance along the inner length of the outer plate portion 12 of the frame 10, but a plurality of LED lamps 40 are formed at a predetermined position inside the outer plate portion 12. Only a dog may be formed, or a plurality of dogs may be formed in one side or two sides of the outer plate part 12 at a predetermined distance, and the number of LEDs and the formation region are not limited in the present invention.

The light guide plate 20 has a shape of a substantially rectangular plate and uniformly distributes the light over the entire area of the screen of the sheet 30 through a pattern having a predetermined area and shape in which light emitted from the plurality of LED lamps 40 is deposited. Role. In general, a diffuser sheet (not shown) is disposed on the upper surface of the light guide plate so as to scatter light exiting from the surface of the light guide plate 20 in a predetermined direction to spread the light evenly across the surface of the light guide plate 20. In addition, a reflector sheet (not shown) is formed on the lower surface of the light guide plate 20 to reflect the light exiting to the lower surface of the light guide plate 20 to return the light back into the light guide plate. Since the light guide plate 20 is a well known structure, a detailed description thereof will be omitted.

In addition, a diamond pattern layer (not shown) is formed on the bottom surface of the light guide plate 20 so that light received from the plurality of LED lamps 40 is actively scattered by the diamond pattern so that the light guide plate 20 may be The light can be emitted uniformly to the front side.

On the other hand, the sheet 30 interposed between a portion of the inner surface 11 of the front plate portion 11 of the frame 10 and the front portion of the light guide plate 20 is an exhibition photograph or the like is displayed to the outside, the type is transparent or translucent It may be a printing film, an acrylic plate or paper, and the like, but the present invention is not limited thereto. Of course, although not shown, between the sheet 30 and the light guide plate 20, a photograph of an exhibit for a live-action output of the exhibit is sandwiched. The transparent or semi-transparent film sheet 30 for the actual output of the exhibit is an adhesive tape such as a double-sided tape (not shown) on a part of the inner surface of the front plate portion 11 of the frame 10 and the front surface of the light guide plate 20. It can also be attached to, but does not limit the attachment and fixing means.

7 is an explanatory diagram for explaining the relationship between the front plate portion and the LED of the frame according to the present invention.

As illustrated in FIG. 7, each of the plurality of LED lamps 40 is spaced apart from each other at a predetermined distance d, and each has the same viewing angle θ. Alternatively, the thickness h of each LED lamp 40 includes all of the thickness of the LED lamp itself, the thickness of the PCB 60 and the thickness of the double-sided tape 50.

In addition, when considering the diffusion angle (θ) of each LED and the predetermined distance (d) between the LEDs, the diffusion angle intersection distance (g) of each LED lamp 40 is expressed by the following equation by the trigonometric formula: Is expressed.

Here, the front plate portion 11 of the frame 10 should cover the diffused light of each LED lamp 40 to be diffused directly to the front surface of the sheet 30 without passing through the light guide plate 20, the inner length (F) is expressed by the following expression (2).

Here, reference numeral t, which is not described, is the thickness of the side plate portion 12 of the frame 10.

8 is a circuit diagram of the LED lamp driving device of the LED lighting frame according to the present invention.

As shown in FIG. 8, the driving device of the LED light 40 of the LED lighting frame according to the present invention includes a plurality of LED lights 40 connected in series and a direct current for supplying power to the LED lights 40. A power supply unit 41 to which an AC voltage is applied, a rectifier unit 42 which receives a supply voltage Vin supplied to the power supply unit 41, converts the received supply voltage Vin into a DC voltage, and outputs the DC voltage; It consists of a constant current supply part 43 which receives the direct current or alternating voltage which is the output of 42, and supplies the constant current which has a constant electric current to the LED lamp 40 as a light emitting part.

Here, in order to solve the problem of the reference voltage (Vref) deviation of Q2 and the base current flowing in Q1 in the constant current supply unit 43, a conventional dialing tone transistor or a field effect transistor (FET) is used. As such, by supplying a constant current to the LED lamp 40, not only to prevent the LED lamp 40 from being damaged, the LED lamp 40 can operate normally even if the user reverses the polarity of the supply voltage. .

9 is a circuit diagram of the LED lamp driving device of the LED lighting frame according to another embodiment of the present invention.

As shown in FIG. 9, the driving device of the LED light 40 of the LED lighting frame according to another embodiment of the present invention supplies power to the LED lights 40 and the LED lights 40 connected in series. A power supply unit 41 to which a direct current or alternating voltage is applied, a rectifying unit 42 comprising a bridge diode for converting a voltage supplied from the power supply unit 41 into a direct current voltage, and applied from the rectifying unit 42. The overcurrent control unit 44 includes a regulating integrated circuit 44-1 for controlling a DC voltage so that the overcurrent is not supplied to the LED lamp 40. Here, the current limiting resistor Rs is connected to the output of the overcurrent controller to supply a stable current to the LED lamp 40.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims below You will understand.

According to the LED lighting picture frame according to the present invention as described above, by combining the LED as a lighting device and the picture frame by an appropriate arrangement structure there is an effect that can increase the aesthetics of the exhibits and at the same time minimize the power consumption.

In addition, by using at least one LED lamp in place of an existing incandescent lamp or a fluorescent lamp, there is an effect that can prevent damage to the exhibits due to heat.

In addition, it is equipped with a color variable device or an illumination sensor that automatically adjusts the illuminance and color change according to the ambient brightness of the frame, and both of them have an effect of expressing the exhibit more beautifully according to the surrounding situation.

In addition, by supplying a constant current to the LED, such as to prevent the LED from being damaged, there is an effect that the LED can operate normally even if the user reverses the polarity of the supply voltage.

Claims (8)

delete In the frame for displaying the exhibits, A frame forming an outline of the frame; An LED and the like attached to the inner surface of the frame and used as a light source; A light guide plate having a predetermined thickness to form a center of the frame such that light emitted from the LED passes and uniformly emits light toward the front side; The light guide plate is made of a sheet to which the exhibit is exposed to the outside, The frame is: A front plate part covering a part of an edge of the sheet; An outer plate portion extending rearward from an outer end of the front plate portion, A thick plate portion extending from the lower end of the outer plate portion to a light guide plate therein; LED lighting frame, characterized in that consisting of the inner plate portion extending from the inner end of the rear plate portion to the lower portion of the light guide plate. The method of claim 2, The LED lighting frame is characterized in that a plurality of spaced apart a predetermined distance on the PCB via a double-sided tape along the circumference in the inner upper portion of the outer plate portion. The method of claim 2, LED lighting frame further comprises a color changing device or an illuminance sensor that automatically adjusts illuminance and color change according to ambient brightness. The method of claim 2, LED light frame, characterized in that to form a diamond pattern layer on the bottom surface of the light guide plate to promote the scattering of light received from the LED. The method of claim 2, LED sheet, characterized in that the sheet is a transparent or translucent film, acrylic plate or paper. The method of claim 3, wherein LED lighting frame, characterized in that the inner length (F) toward the center of the frame of the front plate portion of the frame is expressed by the following equation.

(Where t is the thickness of the side plate portion of the frame, h is the overall thickness of the LEDs, d is the spacing of the plurality of LEDs, and θ is the viewing angle of each LED, etc.) The method according to claim 3 or 7, A driving device such as an LED is electrically connected to the PCB board on which the plurality of LEDs are installed, and the driving device includes a constant current supply unit configured to supply a constant current so that overcurrent is not supplied to the LED, or a regulating integrated circuit is provided. LED lighting picture frame, characterized in that the overcurrent controller provided.

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