WO2012065306A1

WO2012065306A1 - Lamp box device capable of converting point light source into uniformly distributed surface light source

Info

Publication number: WO2012065306A1
Application number: PCT/CN2010/078867
Authority: WO
Inventors: 赖晋康
Original assignee: 达能科技股份有限公司
Priority date: 2010-11-18
Filing date: 2010-11-18
Publication date: 2012-05-24

Abstract

A lamp box device capable of converting a point light source into a uniformly distributed surface light source comprises a box body (1), at least a light converting reflective structure (2) and at least a point light source (3). The box body (1) comprises a containing room (11) and at least a side wall (12) surrounding the containing room (11). The light converting reflective structure (2) is provided at one side wall (12), the inner side of which is provided with multiple reflective plates (21) each facing the containing room (11) and forming an angle with the side wall (12). The point light source (3) is provided in the box body (1) corresponding to the reflective plates (21). When lightened, the point light source (3) casts light to the light converting reflective structure (2), and the reflective plates (21) reflects the light to the containing room (11), thus forming a soft, bright, uniformly distributed surface light source. The device applies a few point light sources to achieve a uniformly distributed surface light source, and is suitable for exhibition or advertising lamp box.

Description

Light box illumination device converted from point source to uniform surface source

The invention relates to a light box illumination device which is converted from a point light source into a uniform surface light source, in particular to a light box which can be used for displaying or advertising, which reduces components and saves cost, but can convert point light source into soft and bright Light box lighting device with uniform surface light source.

Background technique

The lighting or advertising light box uses the light source to project light from the inside of the box, illuminate the display or the advertising panel, and highlights the contents of the panel when the night is dark.

Conventional light box light sources mostly use fluorescent tubes as light source (shown in Figure 1). The structure is mainly to arrange several fluorescent tubes 10 inside the box 1 of the light box, and the light source L generated by the fluorescent tubes 10 is directly projected to the light box 1. The side, so that the viewer can see the image advertising effect of the light box 1.

With the structure of the traditional fluorescent tube type light box, it is necessary to install a large number of fluorescent tubes inside the light box, which is not ideal in terms of cost or circuit connection complexity, which does not meet the current practical requirements.

With the advancement of technology, single-point strong and bright point light source products (such as HID/High-intensity discharge/high-intensity discharge lamps) appear, but such point source light is concentrated at a single point, the center is very bright, but there are There is no diffusion effect. In order to achieve the function of the surface light source, a point light source matrix must be densely packed in the box body, or a whole row of point light sources should be arranged on the side, and then the matte light plate can be used to homogenize the spot light. Still leading to high costs.

In the above practice, in addition to the way of setting the light source on the side, another major disadvantage is that after the light source is placed on the display panel, the thickness of the entire light box becomes thicker, and it is difficult to use everywhere in a narrow urban space. .

Recently, some people have used LCD light guide plates to switch to light boxes, but they are limited by the fixed size of the light guide plate, and the larger the size, the higher the unit cost. Only a few small-sized light boxes can be used, and users can Accept high costs.

From the above, the current lighting or advertising light box is limited to the light source used, and there are components Many problems with thick thickness, or high cost.

Summary of the invention

The invention provides a light box illumination device capable of converting a point light source into a uniform surface light source for the light source problem of the illumination or advertising light box, which is provided on the side of the light box case by using a light conversion reflection structure, and the light conversion The inner side of the reflective structure is provided with a plurality of reflective sheets, each of the reflective sheets facing the box body and at an angle with the side edges, and a light source is disposed on the box body corresponding to each of the reflecting sheets, and the light source is lit when the point light source is lit Projected to the light-converting reflective structure, each of the light-reflecting reflective structures reflects light into the housing to form a uniform, soft, and bright uniform surface light source.

The light box illumination device of the present invention for converting a point light source into a uniform surface light source mainly comprises a box body, at least one light conversion reflecting structure and at least one light source, wherein the box body comprises an accommodating space and at least one side Around the accommodating space, the light conversion reflection structure is disposed on one side of the box body, and the inner side of the light conversion reflection structure is provided with a plurality of reflection sheets, each of the reflection sheets facing the accommodating space, and The side edges are at an angle, and the point light source is also disposed on the box body and corresponds to each of the reflection sheets; thereby, when the light source is lit by a streamlined point light, the light is projected to the light conversion reflection structure, and the light is converted. Each of the reflective sheets of the reflective structure reflects the light into the accommodating space to form a uniform surface light source; therefore, as long as the point light source and the light conversion reflecting structure, the components can be simplified and the cost is low, and the softening is achieved. And a bright uniform surface light source.

The point light source is disposed on the light conversion reflection structure; thus, the point light source can be assembled firstly in the light conversion reflection structure, and then the light conversion reflection structure is easily mounted on the box body, and the assembly and disassembly operations are convenient. It is also ensured that the relative position of the point source and each of the reflection sheets is positioned, and the light of the point source is reflected to form a uniform surface source.

The light-converting reflective structure is protruded from the side edge toward the accommodating space, and the reflective sheet is continuously arranged in a zigzag manner with the side edges; thus, the light-converting reflective structure may be a single component . The industry can stamp a metal plate into a light conversion reflective structure and simultaneously form a reflective sheet. Wherein the light-converting reflection structure is such that the side edge protrudes from the accommodating space to a fixed seat for the point light source, and the point light source is directed toward the accommodating space Side projection; this is also to ensure that the relative position of the point source and each of the reflection sheets is positioned, and the light of the point source is reflected to form a uniform surface source. The mount can also be stamped together when stamping the light conversion reflective structure with a metal plate.

The sawtooth tooth peak of the reflective sheet is at a tooth height with the side edge, and at least one of the reflective sheets is disposed adjacent to the point light source, and is reflected by the reflective sheet adjacent to the point light source. The tooth height of the piece is sequentially increased; thereby, the light of the point source ensures that the light is projected onto each of the reflection sheets, so that the light of the point source can be reflected into a uniform surface light source.

Wherein the foregoing box body comprises two corresponding side edges, and wherein the housing space of the box body may also be provided with a reflecting surface, wherein the reflecting surface corresponds to each of the reflective sheets; More uniform and softer.

It can be seen from the above that the light box illumination device converted from the point source to the uniform surface light source provided by the present invention only needs to provide a point light source and a light conversion reflection structure on the side of the light box body to provide a surface light source, and provide two sides. By setting a point source, a light-converting reflection structure on the side, or by further providing a reflection surface, a more uniform and soft surface light source can be obtained, and the device components provided are simpler and less expensive.

DRAWINGS

1 is a schematic view showing the internal components of a conventional light box;

2 is a schematic view showing the internal components of a light box constituting an embodiment of the present invention;

Figure 3 is a schematic view showing the projection of light in Figure 2;

Figure 4 is a perspective view of an embodiment of the present invention;

Figure 5 is a cross-sectional view showing a portion of the structure of the panel shown in Figure 4.

Reference number

1 cabinet 10 fluorescent tube

11 accommodating space

12 sides

13 reflective surface

2 light conversion reflection junction

21 reflector

211 sawtooth peak

212 teeth [3⁄4

22 mount

3-point light source

4 display panel

41 beam splitter

42 image layer

43 outer transparent layer

L fluorescent light source

L1 projected light

L2 reflected light

L3 re-reflecting light

I extension direction

Referring to FIG. 2 and FIG. 3, a schematic diagram of the internal components of the light box and a light projection diagram of the light box of the embodiment of the present invention are respectively shown.

The invention mainly comprises a box body 1, at least one light conversion reflecting structure 2 and at least one point light source 3, but the embodiment of the invention in the drawings comprises two light conversion reflecting structures 2 and two point light sources 3, detailed structure as follows: The case 1 has an accommodating space 11 , and the case 1 includes at least one side 12 surrounding the accommodating space 11 . The case 1 of the embodiment in the figure includes two corresponding side edges 12 , and wherein the case 1 A reflecting surface 13 may also be disposed in the accommodating space 11 of the casing 1.

The two light-converting reflective structures 2 are respectively disposed on one of the opposite side edges 12 of the casing 1. Each of the light-converting reflective structures 2 is provided with a plurality of reflective sheets 21 on the inner side thereof, and the respective reflective sheets 21 are opposite to each other. Adjacent and arranged along the extending direction I of the side of the box. That is, the respective reflection sheets 21 are adjacent to each other and extend in the direction in which the light source 3 projects the light.

Each of the reflective sheets 21 faces the accommodating space 11 and the reflecting surface 13 of the inside of the casing 1, and each of the reflecting sheets 21 is at an angle with the side 12, and the light-converting reflection structure 2 in the drawing is The side edges 12 are protruded from the accommodating space 11 and are arranged in a zigzag manner, and a fixing seat 22 is protruded from the side edges 12 toward the accommodating space 11 . The sawtooth peaks 211 and the side edges 12 of the reflection sheet 21 are defined as a tooth height 212, and are formed by the reflection sheets 21 adjacent to the holders 22, and the tooth heights 212 of the respective reflection sheets 21 are sequentially increased.

The point light source 3 is disposed on the fixing base 22 of the light conversion reflection structure 2 of the casing 1, and corresponds to each of the reflection sheets 21. The light generated by the point light source 3 is projected toward the side 12 of the accommodating space 11. Thereby, the light of the point light source 3 is ensured to be projected to the respective reflection sheets 21, and then reflected to the reflection surface 13, so that the light of the point light source 3 can constitute a uniform surface light source.

As shown in FIG. 3, when the projection light L1 generated by the point light source 3 is projected to the light conversion reflection structure 2, each reflection sheet 21 of the light conversion reflection structure 2 reflects the projection light L1 as a reflected light L2, and reflects the light L2. Then, the accommodating space 11 and the reflecting surface 13 are reflected, and the reflecting surface 13 reflects the partially reflected light L2 as the re-reflecting light L3, thereby forming a uniform surface light source in the accommodating space 11 of the casing 1.

Moreover, the aforementioned light-converting reflection structure 2 may be a single component, and the industry may stamp a metal plate into a light-converting reflection structure 2 while forming a plurality of reflection sheets 21 and a fixing seat 22. In this way, the point light source 3 can be assembled firstly in the light conversion reflection structure 2, and then the light conversion reflection structure 2 can be easily mounted on the box body 1, which is convenient for assembly and disassembly operations; The relative position of each of the reflection sheets 21 is a surface light source which is positioned to cause the light of the point light source 3 to be reflected to be uniform.

The apparatus provided by the above embodiment includes the light-converting reflection structure 2 and the point light source 3, and even the reflecting surface of the casing 1. The components are simple in structure, low in cost, and easy to assemble, and it is convenient to change the point light source 3 in the future.

Referring to FIG. 4, the light source box 3 is reflected by the light source conversion reflection structure 2 (or a reflection surface 13) into a light box case 1 of a uniform surface light source, and is installed in front of the box body 1 by using the structural design of the present invention. The display panel 4 is a display or advertising light box that is uniform, power-saving, resource-saving, and low-cost. The structure of the display panel 4 may also include a structure including a beam splitter 41, an image layer 42, and an outer transparent layer 43 from the inside (see a cross-sectional view shown in FIG. 5).

The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Therefore, the light box illumination device capable of converting from a point source to a uniform surface light source should still be equivalent to the above embodiment. It is included in the spirit of the invention.

Claims

Claim

A light box illumination device converted from a point source to a uniform surface source, wherein the light box illumination device converted from a point source to a uniform surface source comprises:

a casing comprising an accommodating space, at least one side of which is formed around the accommodating space in an extending direction;

At least one light-converting reflection structure is disposed on one side of the casing, and the light-converting reflection structure is provided with a plurality of reflective sheets disposed along an extending direction of a side of the casing, each of the The reflective sheet faces the accommodating space and is at an angle to a side of the box;

At least one light source is disposed on the casing and corresponding to each of the reflective sheets; wherein the light generated by the point light source is projected to each of the reflective sheets of the light conversion reflective structure, and then the reflection The sheet reflects the light to the accommodating space to form a uniform surface light source.

The light box illumination device for converting a point light source into a uniform surface light source according to claim 1, wherein the point light source is disposed on the light conversion reflection structure.

3. The light box illumination device of claim 2, wherein the box body comprises two corresponding side edges.

The light box illumination device for converting a point light source into a uniform surface light source according to claim 3, wherein a reflecting surface is disposed in the accommodating space of the box body, and the reflecting surface corresponds to each piece Reflective sheet.

The light box illumination device for converting a point light source into a uniform surface light source according to claim 2, wherein the light conversion reflection structure is protruded from the side edge toward the accommodating space, and the reflection The sheet is serrated with the side edges and continuously laid.

6 . The light box illumination device of claim 5 , wherein the light conversion reflective structure is such that the side edge protrudes toward the accommodating space. The point light source is disposed, and the point light source is projected from the accommodating space toward the side.

The light box illumination device for converting a point light source into a uniform surface light source according to claim 6, wherein the sawtooth tooth peak of the reflection sheet is at a tooth height with the side edge, and at least one of the reflections The sheet is disposed adjacent to the point light source, and the tooth height of each of the reflection sheets is sequentially increased from the reflection sheet adjacent to the point light source.

8. The light box illumination device of claim 7, wherein the housing comprises two corresponding sides.

The light box illumination device for converting a point light source into a uniform surface light source according to claim 8, wherein a reflecting surface is disposed in the accommodating space of the box body, and the reflecting surface corresponds to each piece Reflective sheet.

10 . The light box illumination device of claim 1 , wherein the box body comprises a display panel, and the structure of the display panel comprises a beam splitter from the inside to the outside. , an image layer, an outer transparent layer.