KR200453576Y1

KR200453576Y1 - Light box

Info

Publication number: KR200453576Y1
Application number: KR2020110002071U
Authority: KR
Inventors: 이상호
Original assignee: 이상호
Priority date: 2011-03-14
Filing date: 2011-03-14
Publication date: 2011-05-17
Also published as: WO2012124957A3; WO2012124957A2

Abstract

The present invention discloses a light box improved by using the LED module as a light source to improve the functionality while ensuring optimal lighting, the light box, the frame forming a square on each side of the inner side; LED modules installed in the channel of the four sides of the frame; And a backlight module supported by the frames assembled with four sides interposed in the channel of the frames and illuminating the light emitted from the LED module. The backlight module may emit light from the LED module. A light guide plate for guiding the progress of light; A reflective sheet contacting a lower portion of the light guide plate and reflecting the light upward; A finishing plate positioned on a bottom surface of the reflective sheet; At least one gelatin filter positioned on the light guide plate and configured to perform light filtering to control color temperature; And a transparent cover plate positioned on an upper portion of the gelatin filter.

Description

Light box {Light box}

The present invention relates to a light box, and more particularly, to a light box improved by using an LED module as a light source to secure optimal lighting and have functionality.

A light box is a device having a back light inside the rectangular frame and generating front emission.

The light box is used for various purposes such as placing a film on the top of the backlight module to check the state of the film, checking a picture for animation, illuminating the original picture to be drawn, or for advertisement or medical use.

Conventional light boxes are composed of a backlight with a fluorescent lamp, but recently, LED (LED) lighting has been attempted to be composed of a backlight.

In general, it is recommended that the light box be illuminated to have a color temperature of 6000 Kelvin (K). However, the conventional backlight has been difficult to provide a color temperature of 6000K due to the problem of the light source.

Therefore, it is desired to provide a light box that is illuminated to have a sufficient color temperature.

The present invention was devised to improve the above-mentioned conventional problems, and an object of the present invention is to provide a light box in which sufficient color temperature can be ensured by installing LED modules on four sides of the rectangular frame.

In addition, the present invention has another object to provide a light box having a functionality by applying a back printing sheet printed with a pattern such as grid or scale.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

Light box according to the present invention for achieving the above object, the frame forming the sides of the rectangle and the channel is formed on the inner side; LED modules installed in the channel of the four sides of the frame; And a backlight module which is supported by four sides interposed in the channel of the assembled frames and illuminates the light emitted from the LED module.

The backlight module may include a light guide plate configured to guide the progress of light emitted from the LED module; A reflection sheet positioned below the light guide plate and reflecting the light upward; A finishing plate positioned on a bottom surface of the reflective sheet; At least one gelatin filter positioned on the light guide plate and configured to perform light filtering to control color temperature; And a transparent cover plate positioned on an upper portion of the gelatin filter.

Here, the backlight module may further include a back printing sheet on which a grid or a scale is printed on the back of the transparent cover plate.

The gelatin filter may overlap with a plurality of sheets.

And, the frame, the upper frame is formed with a fastening ring for coupling while extending to the lower side to form a side of the cover and the frame forming the upper surface of the frame; And a base extending in a horizontal direction, a support extending downward to form a lower support structure, a fastening extension part coupled to the fastening ring while extending from an end of the base upward to form a side of the frame, and at the base. And a lower frame extending upward and including a support for supporting the cover of the upper frame, wherein the cover, the inner space formed by the support and the base form the channel.

The LED module may further include a support frame including a bottom surface supported by the base and a vertical surface extending in a vertical direction to an end of the bottom surface; And an LED substrate installed on the vertical surface of the support frame.

According to the present invention described above, the light box can be guaranteed the color temperature of 6000K can provide an optimal illumination state.

In addition, the light box may be added to the utilization using the same pattern as the scale of the back printing sheet, and there is an effect that the functionality such as scratch prevention is provided.

1 is a perspective view of a light box according to the present invention.
2 is a side view of the light box of FIG.
3 is an assembled cross-sectional view of a state in which the frame and the backlight module are disassembled.
4 is a perspective view corresponding to FIG. 3.
5 is an assembled cross-sectional view of a state in which the frame and the backlight module are coupled to each other.
6 is a perspective view corresponding to FIG. 5.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following embodiments are provided to those skilled in the art to fully understand the present invention, and may be modified in various forms, and the scope of the present invention is limited to the embodiments described below. It doesn't happen.

Referring to FIG. 1, the light boxes are arranged in a rectangular shape to form four sides and channels are formed at inner sides, an LED module installed in a channel of the four sides of the frame 10, and assembly. It includes a backlight module 12 which is supported by four sides interposed in the channel of the frame 10 and illuminates the light emitted from the LED module to the top.

Here, the frames 10 have lengths corresponding to the long sides and the short sides, respectively, to form a rectangular shape. Each frame 10 has a configuration in which the upper frame 14 and the lower frame 16 are assembled, and end portions of which the long sides and the short sides face at right angles are coupled to each other by the end frame 18.

3 to 6, the finishing module 40, the reflective sheet 42, the light guide plate 44, the gelatin filter 46, the transparent cover plate 48, and the rear surface of the backlight module 12 will be described below. It includes a printing sheet (50).

3 and 6, the LED module includes a support frame 30 and an LED substrate 32 which will be described later.

The back printing sheet 50 may be printed on the back of a pattern such as a grid 19 or a scale, and may be used in a character letter by being disposed on the top layer of the backlight module 12. In particular, a grid 19 or a scale may be appropriately used for learning Arabic.

In addition, the lower frame 16 of the frame 10 may be formed with a step having a narrow width extending downward, the step 20 for supplying power to the LED substrate 32 of the LED module on the stepped side It may be configured and the bottom 22 may be attached to the tip 22 of the silicon material or rubber material for preventing slipping.

The structure of the frame 10, the LED module and the backlight module 12 of the light box configured as shown in FIGS. 1 and 2 will be described in more detail with reference to FIGS. 3 to 6.

The frame 10 is divided into the upper frame 14 and the lower frame 16 as described above, the upper frame 14 of the cover portion 14a and the frame 10 forming the upper surface of the frame 10 A fastening ring 14b for coupling is formed at an end thereof and has a coupling ring formed at an end thereof so as to form a side surface, and the lower frame 16 of the base 16a forms a lower support structure with the base 16a in the horizontal direction. In the fastening extension part 16d and the base 16a which are engaged with the fastening ring 14b while extending upward from the end of the base 16a to the upper side so that the support part 16b extended downward and the side of the frame 10 may be formed. It extends upward and includes a support portion 16c for supporting the bottom surface of the lid portion 14a of the upper frame 14.

Here, the inner space formed by the cover portion 14a of the upper frame 14, the support portion 16b of the lower frame 16, and the base 16a includes the support frame 30 and the LED substrate 32. This is the space where the LED module is mounted.

The supporting frame 30 constituting the LED module has a configuration including a bottom surface supported by the base 16a of the lower frame 16 and a vertical surface extending in a vertical direction to the end portion, the vertical surface of which supports the lower frame 16. The bottom surface is arranged to abut the base 16a. In this case, the LED substrate 32 is mounted inside the vertical surface of the support frame 30, and the LED substrate 32 operates to emit light as power is supplied while a plurality of LED chips (not shown) form an array. It is preferable that components including resistors have a conventional configuration in which they are mounted like LED chips and are coupled to the vertical surface of the support frame 30.

The LED module described above is preferably configured such that the output of the LED chip is sufficiently ensured so as to be configured at four sides of the frame 10 so as to be illuminated at a color temperature of 7000K or more.

In addition, the backlight module 12 is positioned to be in contact with the light guide plate 44 for guiding the progress of the light emitted from the LED substrate 32, the reflective sheet 42 reflecting the light upward, and is positioned to contact the bottom surface of the light guide plate 44. Closing plate 40 positioned to contact the bottom surface of the sheet 42, at least one gelatin filter 46, which is located on top of the light guide plate 44 to filter the color temperature, gelatin filter ( 46 includes a transparent cover plate 48 positioned on the upper portion, and a back printing sheet 50 on which a grid or the like is printed on the back of the transparent cover plate 48.

Here, the closing plate 40 is to finish the rear side while supporting the laminated structure of the upper may be made of a synthetic resin material. In the drawings, the closing plate 40 is exemplarily supported by the support frame 30, but it may be provided to be detachable while being supported by the lower frame 16.

In addition, the reflective sheet 42 preferably has a reflective surface that reflects upward when the light that goes straight impinges on it.

In addition, the light guide plate 44 preferably has a structure in which the back surface is refracted upward when it collides with its back while guiding the light to go straight by a fine groove, a lattice structure, or an embossing process.

In addition, the gelatin filter 46 is a filter in which water is poured into a conventional gelatin film and serves as a diffuser for softening illumination light. The gelatin filter 46 has an effect of reducing the color temperature of about 500K per sheet. Embodiment according to the present invention is illuminated at a color temperature of 7000K or more by the LED module installed in the four sides of the frame (10). Therefore, when the embodiment is illuminated with a color temperature of 7000K, the embodiment according to the present invention can suitably adjust the actual dimmed color temperature to 6000K by stacking two gelatin filters 46.

In addition, the transparent cover plate 48 may be made of a polycarbonate material.

In addition, the back printing sheet 50 disposed on the upper portion of the transparent cover plate 48 may be composed of a transparent film having a grid or scale printed on the back surface, and surface treatment for scratch prevention is preferably performed.

The back printing sheet 50 serves to prevent damage due to scratching of the transparent cover plate 48. In addition, a pattern such as a grid or a scale formed on the rear surface of the back printing sheet 50 may be functionally used by the user as a character letter.

Therefore, as described above, when the embodiment according to the present invention is configured, when the switch 20 on the side is turned on, power is provided to the LED substrate 32. Each LED substrate 32 disposed in the inner channel of the four sides of the frame 10 emits light as power is applied to perform illumination.

The light provided by the light emission of the LED substrate 32 is guided to the light guide plate 44 and travels straight and collides with the rear surface or the reflective sheet 42 of the light guide plate 44 and is reflected upward.

The light reflected upward is diffused while passing through the gelatin filter 46, so that the color temperature is lowered.

As such, the back printing sheet 50 may be illuminated with light scattered by the gelatin filter 46, and the back surface of an object such as a film or an original film disposed on the back printing sheet 50 may be illuminated.

In addition, since the grid or the scale of the back printing sheet 50 may be clearly exposed by the above-described illumination, a pattern such as the grid or the graduation of the back printing sheet 50 may be used.

Embodiment according to the present invention configured and acted as described above can ensure a sufficient color temperature by the light emission of the LED module installed on the four sides, the illumination state can be adjusted to have an optimal color temperature by using a gelatin filter. .

In addition, the embodiment according to the present invention can be added a variety of functionality using the pattern of the back printing sheet (50).

It is to be understood that the foregoing is merely illustrative of one preferred embodiment of the present invention and that modifications and variations may be made thereto without departing from the spirit of the invention.

10 frame 12 backlight module
14: upper frame 16: lower frame
18: end frame 19: grid
20: switch 30: support frame
32: LED substrate 40: finish plate
42: reflective sheet 44: light guide plate
46: gelatin filter 48: transparent cover plate
50: back printing sheet

Claims

Frames forming the sides of the rectangle and the channel is formed on the inner side;
LED modules installed in the channel of the four sides of the frame; And
And a backlight module supported by the frames assembled with four sides interposed in the channel of the frames and illuminating the light emitted from the LED module.
The backlight module,
A light guide plate for guiding the progress of light emitted from the LED module;
A reflective sheet contacting a lower portion of the light guide plate and reflecting the light upward;
A finishing plate positioned on a bottom surface of the reflective sheet;
At least one gelatin filter positioned on the light guide plate and configured to perform light filtering to control color temperature; And
And a transparent cover plate positioned on an upper portion of the gelatin filter.

The method according to claim 1,
The backlight module,
Light box, characterized in that further comprising a back printing sheet printed on the back of the grid or grid on the upper portion of the transparent cover plate.

The method according to claim 1,
The gelatin filter,
A light box, characterized by overlapping with a plurality of sheets.

The method according to claim 1,
The frame includes:
An upper frame having a fastening ring for coupling while extending downward to form a side of the frame and a cover part forming an upper surface of the frame;
Base in the horizontal direction, the support portion extending to the lower side of the base to form a lower support structure, the fastening extension portion coupled to the fastening ring while extending from the end of the base to the upper side to form the side of the frame, and the upper side in the base And a lower frame extending to and including a support for supporting the cover of the upper frame.
The light box, characterized in that the inner space formed by the cover portion and the support and the base constitutes the channel.

The method of claim 4, wherein
The LED module,
A support frame including a bottom surface supported by the base and a vertical surface extending in a direction perpendicular to an end of the bottom surface; And an LED substrate installed on the vertical surface of the support frame.